refactor: move packages to internal/

33 files changed, 0 insertions, 7642 deletions

diff --git a/pkg/git/git.go b/pkg/git/git.go
deleted file mode 100644
index 1e05d60..0000000
--- a/pkg/git/git.go
+++ /dev/null
@@ -1,365 +0,0 @@
-package git
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"os/exec"
-	"path/filepath"
-	"regexp"
-	"strconv"
-	"strings"
-	"time"
-)
-
-func Branches(repoDir string, filter *regexp.Regexp, defaultBranch string) ([]Ref, error) {
-	cmd := exec.Command("git", "for-each-ref", "--format=%(refname:short)", "refs/heads/")
-	if repoDir != "" {
-		cmd.Dir = repoDir
-	}
-	out, err := cmd.Output()
-	if err != nil {
-		return nil, fmt.Errorf("failed to list branches: %w", err)
-	}
-	lines := strings.Split(string(out), "\n")
-	branches := make([]Ref, 0, len(lines))
-	for _, line := range lines {
-		if line == "" {
-			continue
-		}
-
-		if filter != nil && !filter.MatchString(line) && line != defaultBranch {
-			continue
-		}
-		branches = append(branches, NewRef(line))
-	}
-	return branches, nil
-}
-
-func Tags(repoDir string) ([]Tag, error) {
-	format := []string{
-		"%(refname:short)",    // tag name
-		"%(creatordate:unix)", // creation date
-		"%(objectname)",       // commit hash for lightweight tags
-		"%(*objectname)",      // peeled object => commit hash
-	}
-	args := []string{
-		"for-each-ref",
-		"--sort=-creatordate",
-		"--format=" + strings.Join(format, "%00"),
-		"refs/tags",
-	}
-	cmd := exec.Command("git", args...)
-	if repoDir != "" {
-		cmd.Dir = repoDir
-	}
-	out, err := cmd.Output()
-	if err != nil {
-		return nil, fmt.Errorf("failed to list tags: %w", err)
-	}
-
-	lines := strings.Split(strings.TrimSpace(string(out)), "\n")
-	tags := make([]Tag, 0, len(lines))
-
-	for _, line := range lines {
-		if line == "" {
-			continue
-		}
-		parts := strings.Split(line, "\x00")
-		if len(parts) != len(format) {
-			continue
-		}
-		name, timestamp, objectName, commitHash := parts[0], parts[1], parts[2], parts[3]
-		timestampInt, err := strconv.Atoi(timestamp)
-		if err != nil {
-			return nil, fmt.Errorf("failed to parse tag creation date: %w", err)
-		}
-		if commitHash == "" {
-			commitHash = objectName // tag is lightweight
-		}
-		tags = append(tags, Tag{
-			Name:       name,
-			Date:       time.Unix(int64(timestampInt), 0),
-			CommitHash: commitHash,
-		})
-	}
-
-	return tags, nil
-}
-
-func Files(ref Ref, repoDir string) ([]Blob, error) {
-	if ref.IsEmpty() {
-		ref = NewRef("HEAD")
-	}
-
-	// -r: recurse into subtrees
-	// -l: include blob size
-	cmd := exec.Command("git", "ls-tree", "--full-tree", "-r", "-l", ref.String())
-	if repoDir != "" {
-		cmd.Dir = repoDir
-	}
-	stdout, err := cmd.StdoutPipe()
-	if err != nil {
-		return nil, fmt.Errorf("failed to get stdout pipe: %w", err)
-	}
-
-	stderr, err := cmd.StderrPipe()
-	if err != nil {
-		return nil, fmt.Errorf("failed to get stderr pipe: %w", err)
-	}
-
-	if err := cmd.Start(); err != nil {
-		return nil, fmt.Errorf("failed to start git ls-tree: %w", err)
-	}
-
-	files := make([]Blob, 0, 256)
-
-	// Read stdout line by line; each line is like:
-	// <mode> <type> <object> <size>\t<path>
-	// Example: "100644 blob e69de29... 12\tREADME.md"
-	scanner := bufio.NewScanner(stdout)
-
-	// Allow long paths by increasing the scanner buffer limit
-	scanner.Buffer(make([]byte, 0, 64*1024), 2*1024*1024)
-
-	for scanner.Scan() {
-		line := scanner.Text()
-		if line == "" {
-			continue
-		}
-
-		// Split header and path using the tab delimiter
-		// to preserve spaces in file names
-		tab := strings.IndexByte(line, '\t')
-		if tab == -1 {
-			return nil, fmt.Errorf("expected tab delimiter in ls-tree output: %s", line)
-		}
-		header := line[:tab]
-		path := line[tab+1:]
-
-		// header fields: mode, type, object, size
-		parts := strings.Fields(header)
-		if len(parts) < 4 {
-			return nil, fmt.Errorf("unexpected ls-tree output format: %s", line)
-		}
-		modeNumber := parts[0]
-		typ := parts[1]
-		// object := parts[2]
-		sizeStr := parts[3]
-
-		if typ != "blob" {
-			// We only care about files (blobs)
-			continue
-		}
-
-		// Size could be "-" for non-blobs in some forms;
-		// for blobs it should be a number.
-		size, err := strconv.ParseInt(sizeStr, 10, 64)
-		if err != nil {
-			return nil, err
-		}
-
-		mode, err := ParseFileMode(modeNumber)
-		if err != nil {
-			return nil, err
-		}
-
-		files = append(files, Blob{
-			Ref:      ref,
-			Mode:     mode,
-			Path:     path,
-			FileName: filepath.Base(path),
-			Size:     size,
-		})
-	}
-
-	if err := scanner.Err(); err != nil {
-		// Drain stderr to include any git error message
-		_ = cmd.Wait()
-		b, _ := io.ReadAll(stderr)
-		if len(b) > 0 {
-			return nil, fmt.Errorf("failed to read ls-tree output: %v: %s", err, string(b))
-		}
-		return nil, fmt.Errorf("failed to read ls-tree output: %w", err)
-	}
-
-	// Ensure the command completed successfully
-	if err := cmd.Wait(); err != nil {
-		b, _ := io.ReadAll(stderr)
-		if len(b) > 0 {
-			return nil, fmt.Errorf("git ls-tree %q failed: %v: %s", ref, err, string(b))
-		}
-		return nil, fmt.Errorf("git ls-tree %q failed: %w", ref, err)
-	}
-
-	return files, nil
-}
-
-func BlobContent(ref Ref, path string, repoDir string) ([]byte, bool, error) {
-	if ref.IsEmpty() {
-		ref = NewRef("HEAD")
-	}
-	// Use `git show ref:path` to get the blob content at that ref
-	cmd := exec.Command("git", "show", ref.String()+":"+path)
-	if repoDir != "" {
-		cmd.Dir = repoDir
-	}
-	out, err := cmd.Output()
-	if err != nil {
-		// include stderr if available
-		if ee, ok := err.(*exec.ExitError); ok {
-			return nil, false, fmt.Errorf("git show failed: %v: %s", err, string(ee.Stderr))
-		}
-		return nil, false, fmt.Errorf("git show failed: %w", err)
-	}
-	return out, IsBinary(out), nil
-}
-
-func Commits(ref Ref, repoDir string) ([]Commit, error) {
-	format := []string{
-		"%H",  // commit hash
-		"%h",  // abbreviated commit hash
-		"%s",  // subject
-		"%b",  // body
-		"%an", // author name
-		"%ae", // author email
-		"%ad", // author date
-		"%cn", // committer name
-		"%ce", // committer email
-		"%cd", // committer date
-		"%P",  // parent hashes
-		"%D",  // ref names without the "(", ")" wrapping.
-	}
-
-	args := []string{
-		"log",
-		"--date=unix",
-		"--pretty=format:" + strings.Join(format, "\x1F"),
-		"-z", // Separate the commits with NULs instead of newlines
-		ref.String(),
-	}
-
-	cmd := exec.Command("git", args...)
-	if repoDir != "" {
-		cmd.Dir = repoDir
-	}
-
-	out, err := cmd.Output()
-	if err != nil {
-		return nil, err
-	}
-
-	lines := strings.Split(string(out), "\x00")
-	commits := make([]Commit, 0, len(lines))
-	for _, line := range lines {
-		if line == "" {
-			continue
-		}
-		parts := strings.Split(line, "\x1F")
-		if len(parts) != len(format) {
-			return nil, fmt.Errorf("unexpected commit format: %s", line)
-		}
-		full, short, subject, body, author, email, date :=
-			parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6]
-		committerName, committerEmail, committerDate, parents, refs :=
-			parts[7], parts[8], parts[9], parts[10], parts[11]
-		timestamp, err := strconv.Atoi(date)
-		if err != nil {
-			return nil, fmt.Errorf("failed to parse commit date: %w", err)
-		}
-		committerTimestamp, err := strconv.Atoi(committerDate)
-		if err != nil {
-			return nil, fmt.Errorf("failed to parse committer date: %w", err)
-		}
-		commits = append(commits, Commit{
-			Hash:           full,
-			ShortHash:      short,
-			Subject:        subject,
-			Body:           body,
-			Author:         author,
-			Email:          email,
-			Date:           time.Unix(int64(timestamp), 0),
-			CommitterName:  committerName,
-			CommitterEmail: committerEmail,
-			CommitterDate:  time.Unix(int64(committerTimestamp), 0),
-			Parents:        strings.Fields(parents),
-			RefNames:       parseRefNames(refs),
-		})
-	}
-	return commits, nil
-}
-
-func parseRefNames(refNames string) []RefName {
-	refNames = strings.TrimSpace(refNames)
-	if refNames == "" {
-		return nil
-	}
-
-	parts := strings.Split(refNames, ", ")
-	out := make([]RefName, 0, len(parts))
-	for _, p := range parts {
-		p = strings.TrimSpace(p)
-		if p == "" {
-			continue
-		}
-
-		// tag: v1.2.3
-		if strings.HasPrefix(p, "tag: ") {
-			out = append(out, RefName{
-				Kind: RefKindTag,
-				Name: strings.TrimSpace(strings.TrimPrefix(p, "tag: ")),
-			})
-			continue
-		}
-
-		// HEAD -> main
-		if strings.HasPrefix(p, "HEAD -> ") {
-			out = append(out, RefName{
-				Kind:   RefKindHEAD,
-				Name:   "HEAD",
-				Target: strings.TrimSpace(strings.TrimPrefix(p, "HEAD -> ")),
-			})
-			continue
-		}
-
-		// origin/HEAD -> origin/main
-		if strings.Contains(p, " -> ") && strings.HasSuffix(strings.SplitN(p, " -> ", 2)[0], "/HEAD") {
-			leftRight := strings.SplitN(p, " -> ", 2)
-			out = append(out, RefName{
-				Kind:   RefKindRemoteHEAD,
-				Name:   strings.TrimSpace(leftRight[0]),
-				Target: strings.TrimSpace(leftRight[1]),
-			})
-			continue
-		}
-
-		// Remote branch like origin/main
-		if strings.Contains(p, "/") {
-			out = append(out, RefName{
-				Kind: RefKindRemote,
-				Name: p,
-			})
-			continue
-		}
-
-		// Local branch
-		out = append(out, RefName{
-			Kind: RefKindBranch,
-			Name: p,
-		})
-	}
-	return out
-}
-
-func CommitDiff(hash, repoDir string) (string, error) {
-	// unified diff without a commit header
-	cmd := exec.Command("git", "show", "--pretty=format:", "--patch", hash)
-	if repoDir != "" {
-		cmd.Dir = repoDir
-	}
-	out, err := cmd.Output()
-	if err != nil {
-		return "", err
-	}
-	return string(out), nil
-}
diff --git a/pkg/git/types.go b/pkg/git/types.go
deleted file mode 100644
index beecfa4..0000000
--- a/pkg/git/types.go
+++ /dev/null
@@ -1,76 +0,0 @@
-package git
-
-import (
-	"time"
-)
-
-type Ref struct {
-	ref     string
-	dirName string
-}
-
-func NewRef(ref string) Ref {
-	return Ref{
-		ref:     ref,
-		dirName: RefToFileName(ref),
-	}
-}
-
-func (r Ref) IsEmpty() bool {
-	return r.ref == ""
-}
-
-func (r Ref) String() string {
-	return r.ref
-}
-
-func (r Ref) DirName() string {
-	return r.dirName
-}
-
-type Blob struct {
-	Ref      Ref
-	Mode     string
-	Path     string
-	FileName string
-	Size     int64
-}
-
-type Commit struct {
-	Hash           string
-	ShortHash      string
-	Subject        string
-	Body           string
-	Author         string
-	Email          string
-	Date           time.Time
-	CommitterName  string
-	CommitterEmail string
-	CommitterDate  time.Time
-	Parents        []string
-	Branch         Ref
-	RefNames       []RefName
-	Href           string
-}
-
-type RefKind string
-
-const (
-	RefKindHEAD       RefKind = "HEAD"
-	RefKindRemoteHEAD RefKind = "RemoteHEAD"
-	RefKindBranch     RefKind = "Branch"
-	RefKindRemote     RefKind = "Remote"
-	RefKindTag        RefKind = "Tag"
-)
-
-type RefName struct {
-	Kind   RefKind
-	Name   string // Name is the primary name of the ref as shown by `git log %D` token (left side for pointers)
-	Target string // Target is set for symbolic refs like "HEAD -> main" or "origin/HEAD -> origin/main"
-}
-
-type Tag struct {
-	Name       string
-	Date       time.Time
-	CommitHash string
-}
diff --git a/pkg/git/utils.go b/pkg/git/utils.go
deleted file mode 100644
index 68e4497..0000000
--- a/pkg/git/utils.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package git
-
-import (
-	"fmt"
-	"strconv"
-	"strings"
-)
-
-// ParseFileMode converts a git-style file mode (e.g. "100644")
-// into a human-readable string like "rw-r--r--".
-func ParseFileMode(modeStr string) (string, error) {
-	// Git modes are typically 6 digits. The last 3 represent permissions.
-	// e.g. 100644 → 644
-	if len(modeStr) < 3 {
-		return "", fmt.Errorf("invalid mode: %s", modeStr)
-	}
-
-	permStr := modeStr[len(modeStr)-3:]
-	permVal, err := strconv.Atoi(permStr)
-	if err != nil {
-		return "", err
-	}
-
-	return numericPermToLetters(permVal), nil
-}
-
-func numericPermToLetters(perm int) string {
-	// Map each octal digit to rwx letters
-	lookup := map[int]string{
-		0: "---",
-		1: "--x",
-		2: "-w-",
-		3: "-wx",
-		4: "r--",
-		5: "r-x",
-		6: "rw-",
-		7: "rwx",
-	}
-
-	u := perm / 100       // user
-	g := (perm / 10) % 10 // group
-	o := perm % 10        // others
-
-	return lookup[u] + lookup[g] + lookup[o]
-}
-
-// IsBinary performs a heuristic check to determine if data is binary.
-// Rules:
-//   - Any NUL byte => binary
-//   - Consider only a sample (up to 8 KiB). If >30% of bytes are control characters
-//     outside the common whitespace/newline range, treat as binary.
-func IsBinary(b []byte) bool {
-	n := len(b)
-	if n == 0 {
-		return false
-	}
-	if n > 8192 {
-		n = 8192
-	}
-	sample := b[:n]
-	bad := 0
-	for _, c := range sample {
-		if c == 0x00 {
-			return true
-		}
-		// Allow common whitespace and control: tab(9), LF(10), CR(13)
-		if c == 9 || c == 10 || c == 13 {
-			continue
-		}
-		// Count other control chars and DEL as non-text
-		if c < 32 || c == 127 {
-			bad++
-		}
-	}
-	// If more than 30% of sampled bytes are non-text, consider binary
-	return bad*100 > n*30
-}
-
-func RefToFileName(ref string) string {
-	var result strings.Builder
-	for _, c := range ref {
-		if (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '-' || c == '.' {
-			result.WriteByte(byte(c))
-		} else if c >= 'A' && c <= 'Z' {
-			result.WriteByte(byte(c - 'A' + 'a'))
-		} else {
-			result.WriteByte('-')
-		}
-	}
-	return result.String()
-}
diff --git a/pkg/gitdiff/apply.go b/pkg/gitdiff/apply.go
deleted file mode 100644
index 44bbcca..0000000
--- a/pkg/gitdiff/apply.go
+++ /dev/null
@@ -1,147 +0,0 @@
-package gitdiff
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"sort"
-)
-
-// Conflict indicates an apply failed due to a conflict between the patch and
-// the source content.
-//
-// Users can test if an error was caused by a conflict by using errors.Is with
-// an empty Conflict:
-//
-//	    if errors.Is(err, &Conflict{}) {
-//		       // handle conflict
-//	    }
-type Conflict struct {
-	msg string
-}
-
-func (c *Conflict) Error() string {
-	return "conflict: " + c.msg
-}
-
-// Is implements error matching for Conflict. Passing an empty instance of
-// Conflict always returns true.
-func (c *Conflict) Is(other error) bool {
-	if other, ok := other.(*Conflict); ok {
-		return other.msg == "" || other.msg == c.msg
-	}
-	return false
-}
-
-// ApplyError wraps an error that occurs during patch application with
-// additional location information, if it is available.
-type ApplyError struct {
-	// Line is the one-indexed line number in the source data
-	Line int64
-	// Fragment is the one-indexed fragment number in the file
-	Fragment int
-	// FragmentLine is the one-indexed line number in the fragment
-	FragmentLine int
-
-	err error
-}
-
-// Unwrap returns the wrapped error.
-func (e *ApplyError) Unwrap() error {
-	return e.err
-}
-
-func (e *ApplyError) Error() string {
-	return fmt.Sprintf("%v", e.err)
-}
-
-type lineNum int
-type fragNum int
-type fragLineNum int
-
-// applyError creates a new *ApplyError wrapping err or augments the information
-// in err with args if it is already an *ApplyError. Returns nil if err is nil.
-func applyError(err error, args ...interface{}) error {
-	if err == nil {
-		return nil
-	}
-
-	e, ok := err.(*ApplyError)
-	if !ok {
-		if err == io.EOF {
-			err = io.ErrUnexpectedEOF
-		}
-		e = &ApplyError{err: err}
-	}
-	for _, arg := range args {
-		switch v := arg.(type) {
-		case lineNum:
-			e.Line = int64(v) + 1
-		case fragNum:
-			e.Fragment = int(v) + 1
-		case fragLineNum:
-			e.FragmentLine = int(v) + 1
-		}
-	}
-	return e
-}
-
-var (
-	errApplyInProgress = errors.New("gitdiff: incompatible apply in progress")
-	errApplierClosed   = errors.New("gitdiff: applier is closed")
-)
-
-// Apply applies the changes in f to src, writing the result to dst. It can
-// apply both text and binary changes.
-//
-// If an error occurs while applying, Apply returns an *ApplyError that
-// annotates the error with additional information. If the error is because of
-// a conflict with the source, the wrapped error will be a *Conflict.
-func Apply(dst io.Writer, src io.ReaderAt, f *File) error {
-	if f.IsBinary {
-		if len(f.TextFragments) > 0 {
-			return applyError(errors.New("binary file contains text fragments"))
-		}
-		if f.BinaryFragment == nil {
-			return applyError(errors.New("binary file does not contain a binary fragment"))
-		}
-	} else {
-		if f.BinaryFragment != nil {
-			return applyError(errors.New("text file contains a binary fragment"))
-		}
-	}
-
-	switch {
-	case f.BinaryFragment != nil:
-		applier := NewBinaryApplier(dst, src)
-		if err := applier.ApplyFragment(f.BinaryFragment); err != nil {
-			return err
-		}
-		return applier.Close()
-
-	case len(f.TextFragments) > 0:
-		frags := make([]*TextFragment, len(f.TextFragments))
-		copy(frags, f.TextFragments)
-
-		sort.Slice(frags, func(i, j int) bool {
-			return frags[i].OldPosition < frags[j].OldPosition
-		})
-
-		// TODO(bkeyes): consider merging overlapping fragments
-		// right now, the application fails if fragments overlap, but it should be
-		// possible to precompute the result of applying them in order
-
-		applier := NewTextApplier(dst, src)
-		for i, frag := range frags {
-			if err := applier.ApplyFragment(frag); err != nil {
-				return applyError(err, fragNum(i))
-			}
-		}
-		return applier.Close()
-
-	default:
-		// nothing to apply, just copy all the data
-		_, err := copyFrom(dst, src, 0)
-		return err
-	}
-}
diff --git a/pkg/gitdiff/apply_binary.go b/pkg/gitdiff/apply_binary.go
deleted file mode 100644
index b34772d..0000000
--- a/pkg/gitdiff/apply_binary.go
+++ /dev/null
@@ -1,206 +0,0 @@
-package gitdiff
-
-import (
-	"errors"
-	"fmt"
-	"io"
-)
-
-// BinaryApplier applies binary changes described in a fragment to source data.
-// The applier must be closed after use.
-type BinaryApplier struct {
-	dst io.Writer
-	src io.ReaderAt
-
-	closed bool
-	dirty  bool
-}
-
-// NewBinaryApplier creates an BinaryApplier that reads data from src and
-// writes modified data to dst.
-func NewBinaryApplier(dst io.Writer, src io.ReaderAt) *BinaryApplier {
-	a := BinaryApplier{
-		dst: dst,
-		src: src,
-	}
-	return &a
-}
-
-// ApplyFragment applies the changes in the fragment f and writes the result to
-// dst. ApplyFragment can be called at most once.
-//
-// If an error occurs while applying, ApplyFragment returns an *ApplyError that
-// annotates the error with additional information. If the error is because of
-// a conflict between a fragment and the source, the wrapped error will be a
-// *Conflict.
-func (a *BinaryApplier) ApplyFragment(f *BinaryFragment) error {
-	if f == nil {
-		return applyError(errors.New("nil fragment"))
-	}
-	if a.closed {
-		return applyError(errApplierClosed)
-	}
-	if a.dirty {
-		return applyError(errApplyInProgress)
-	}
-
-	// mark an apply as in progress, even if it fails before making changes
-	a.dirty = true
-
-	switch f.Method {
-	case BinaryPatchLiteral:
-		if _, err := a.dst.Write(f.Data); err != nil {
-			return applyError(err)
-		}
-	case BinaryPatchDelta:
-		if err := applyBinaryDeltaFragment(a.dst, a.src, f.Data); err != nil {
-			return applyError(err)
-		}
-	default:
-		return applyError(fmt.Errorf("unsupported binary patch method: %v", f.Method))
-	}
-	return nil
-}
-
-// Close writes any data following the last applied fragment and prevents
-// future calls to ApplyFragment.
-func (a *BinaryApplier) Close() (err error) {
-	if a.closed {
-		return nil
-	}
-
-	a.closed = true
-	if !a.dirty {
-		_, err = copyFrom(a.dst, a.src, 0)
-	} else {
-		// do nothing, applying a binary fragment copies all data
-	}
-	return err
-}
-
-func applyBinaryDeltaFragment(dst io.Writer, src io.ReaderAt, frag []byte) error {
-	srcSize, delta := readBinaryDeltaSize(frag)
-	if err := checkBinarySrcSize(src, srcSize); err != nil {
-		return err
-	}
-
-	dstSize, delta := readBinaryDeltaSize(delta)
-
-	for len(delta) > 0 {
-		op := delta[0]
-		if op == 0 {
-			return errors.New("invalid delta opcode 0")
-		}
-
-		var n int64
-		var err error
-		switch op & 0x80 {
-		case 0x80:
-			n, delta, err = applyBinaryDeltaCopy(dst, op, delta[1:], src)
-		case 0x00:
-			n, delta, err = applyBinaryDeltaAdd(dst, op, delta[1:])
-		}
-		if err != nil {
-			return err
-		}
-		dstSize -= n
-	}
-
-	if dstSize != 0 {
-		return errors.New("corrupt binary delta: insufficient or extra data")
-	}
-	return nil
-}
-
-// readBinaryDeltaSize reads a variable length size from a delta-encoded binary
-// fragment, returing the size and the unused data. Data is encoded as:
-//
-//	[[1xxxxxxx]...] [0xxxxxxx]
-//
-// in little-endian order, with 7 bits of the value per byte.
-func readBinaryDeltaSize(d []byte) (size int64, rest []byte) {
-	shift := uint(0)
-	for i, b := range d {
-		size |= int64(b&0x7F) << shift
-		shift += 7
-		if b <= 0x7F {
-			return size, d[i+1:]
-		}
-	}
-	return size, nil
-}
-
-// applyBinaryDeltaAdd applies an add opcode in a delta-encoded binary
-// fragment, returning the amount of data written and the usused part of the
-// fragment. An add operation takes the form:
-//
-//	[0xxxxxx][[data1]...]
-//
-// where the lower seven bits of the opcode is the number of data bytes
-// following the opcode. See also pack-format.txt in the Git source.
-func applyBinaryDeltaAdd(w io.Writer, op byte, delta []byte) (n int64, rest []byte, err error) {
-	size := int(op)
-	if len(delta) < size {
-		return 0, delta, errors.New("corrupt binary delta: incomplete add")
-	}
-	_, err = w.Write(delta[:size])
-	return int64(size), delta[size:], err
-}
-
-// applyBinaryDeltaCopy applies a copy opcode in a delta-encoded binary
-// fragment, returing the amount of data written and the unused part of the
-// fragment. A copy operation takes the form:
-//
-//	[1xxxxxxx][offset1][offset2][offset3][offset4][size1][size2][size3]
-//
-// where the lower seven bits of the opcode determine which non-zero offset and
-// size bytes are present in little-endian order: if bit 0 is set, offset1 is
-// present, etc. If no offset or size bytes are present, offset is 0 and size
-// is 0x10000. See also pack-format.txt in the Git source.
-func applyBinaryDeltaCopy(w io.Writer, op byte, delta []byte, src io.ReaderAt) (n int64, rest []byte, err error) {
-	const defaultSize = 0x10000
-
-	unpack := func(start, bits uint) (v int64) {
-		for i := uint(0); i < bits; i++ {
-			mask := byte(1 << (i + start))
-			if op&mask > 0 {
-				if len(delta) == 0 {
-					err = errors.New("corrupt binary delta: incomplete copy")
-					return
-				}
-				v |= int64(delta[0]) << (8 * i)
-				delta = delta[1:]
-			}
-		}
-		return
-	}
-
-	offset := unpack(0, 4)
-	size := unpack(4, 3)
-	if err != nil {
-		return 0, delta, err
-	}
-	if size == 0 {
-		size = defaultSize
-	}
-
-	// TODO(bkeyes): consider pooling these buffers
-	b := make([]byte, size)
-	if _, err := src.ReadAt(b, offset); err != nil {
-		return 0, delta, err
-	}
-
-	_, err = w.Write(b)
-	return size, delta, err
-}
-
-func checkBinarySrcSize(r io.ReaderAt, size int64) error {
-	ok, err := isLen(r, size)
-	if err != nil {
-		return err
-	}
-	if !ok {
-		return &Conflict{"fragment src size does not match actual src size"}
-	}
-	return nil
-}
diff --git a/pkg/gitdiff/apply_text.go b/pkg/gitdiff/apply_text.go
deleted file mode 100644
index 8d0accb..0000000
--- a/pkg/gitdiff/apply_text.go
+++ /dev/null
@@ -1,158 +0,0 @@
-package gitdiff
-
-import (
-	"errors"
-	"io"
-)
-
-// TextApplier applies changes described in text fragments to source data. If
-// changes are described in multiple fragments, those fragments must be applied
-// in order. The applier must be closed after use.
-//
-// By default, TextApplier operates in "strict" mode, where fragment content
-// and positions must exactly match those of the source.
-type TextApplier struct {
-	dst      io.Writer
-	src      io.ReaderAt
-	lineSrc  LineReaderAt
-	nextLine int64
-
-	closed bool
-	dirty  bool
-}
-
-// NewTextApplier creates a TextApplier that reads data from src and writes
-// modified data to dst. If src implements LineReaderAt, it is used directly.
-func NewTextApplier(dst io.Writer, src io.ReaderAt) *TextApplier {
-	a := TextApplier{
-		dst: dst,
-		src: src,
-	}
-
-	if lineSrc, ok := src.(LineReaderAt); ok {
-		a.lineSrc = lineSrc
-	} else {
-		a.lineSrc = &lineReaderAt{r: src}
-	}
-
-	return &a
-}
-
-// ApplyFragment applies the changes in the fragment f, writing unwritten data
-// before the start of the fragment and any changes from the fragment. If
-// multiple text fragments apply to the same content, ApplyFragment must be
-// called in order of increasing start position. As a result, each fragment can
-// be applied at most once.
-//
-// If an error occurs while applying, ApplyFragment returns an *ApplyError that
-// annotates the error with additional information. If the error is because of
-// a conflict between the fragment and the source, the wrapped error will be a
-// *Conflict.
-func (a *TextApplier) ApplyFragment(f *TextFragment) error {
-	if a.closed {
-		return applyError(errApplierClosed)
-	}
-
-	// mark an apply as in progress, even if it fails before making changes
-	a.dirty = true
-
-	// application code assumes fragment fields are consistent
-	if err := f.Validate(); err != nil {
-		return applyError(err)
-	}
-
-	// lines are 0-indexed, positions are 1-indexed (but new files have position = 0)
-	fragStart := f.OldPosition - 1
-	if fragStart < 0 {
-		fragStart = 0
-	}
-	fragEnd := fragStart + f.OldLines
-
-	start := a.nextLine
-	if fragStart < start {
-		return applyError(&Conflict{"fragment overlaps with an applied fragment"})
-	}
-
-	if f.OldPosition == 0 {
-		ok, err := isLen(a.src, 0)
-		if err != nil {
-			return applyError(err)
-		}
-		if !ok {
-			return applyError(&Conflict{"cannot create new file from non-empty src"})
-		}
-	}
-
-	preimage := make([][]byte, fragEnd-start)
-	n, err := a.lineSrc.ReadLinesAt(preimage, start)
-	if err != nil {
-		// an EOF indicates that source file is shorter than the patch expects,
-		// which should be reported as a conflict rather than a generic error
-		if errors.Is(err, io.EOF) {
-			err = &Conflict{"src has fewer lines than required by fragment"}
-		}
-		return applyError(err, lineNum(start+int64(n)))
-	}
-
-	// copy leading data before the fragment starts
-	for i, line := range preimage[:fragStart-start] {
-		if _, err := a.dst.Write(line); err != nil {
-			a.nextLine = start + int64(i)
-			return applyError(err, lineNum(a.nextLine))
-		}
-	}
-	preimage = preimage[fragStart-start:]
-
-	// apply the changes in the fragment
-	used := int64(0)
-	for i, line := range f.Lines {
-		if err := applyTextLine(a.dst, line, preimage, used); err != nil {
-			a.nextLine = fragStart + used
-			return applyError(err, lineNum(a.nextLine), fragLineNum(i))
-		}
-		if line.Old() {
-			used++
-		}
-	}
-	a.nextLine = fragStart + used
-
-	// new position of +0,0 mean a full delete, so check for leftovers
-	if f.NewPosition == 0 && f.NewLines == 0 {
-		var b [1][]byte
-		n, err := a.lineSrc.ReadLinesAt(b[:], a.nextLine)
-		if err != nil && err != io.EOF {
-			return applyError(err, lineNum(a.nextLine))
-		}
-		if n > 0 {
-			return applyError(&Conflict{"src still has content after full delete"}, lineNum(a.nextLine))
-		}
-	}
-
-	return nil
-}
-
-func applyTextLine(dst io.Writer, line Line, preimage [][]byte, i int64) (err error) {
-	if line.Old() && string(preimage[i]) != line.Line {
-		return &Conflict{"fragment line does not match src line"}
-	}
-	if line.New() {
-		_, err = io.WriteString(dst, line.Line)
-	}
-	return err
-}
-
-// Close writes any data following the last applied fragment and prevents
-// future calls to ApplyFragment.
-func (a *TextApplier) Close() (err error) {
-	if a.closed {
-		return nil
-	}
-
-	a.closed = true
-	if !a.dirty {
-		_, err = copyFrom(a.dst, a.src, 0)
-	} else {
-		_, err = copyLinesFrom(a.dst, a.lineSrc, a.nextLine)
-	}
-	return err
-}
diff --git a/pkg/gitdiff/base85.go b/pkg/gitdiff/base85.go
deleted file mode 100644
index 86db117..0000000
--- a/pkg/gitdiff/base85.go
+++ /dev/null
@@ -1,91 +0,0 @@
-package gitdiff
-
-import (
-	"fmt"
-)
-
-var (
-	b85Table map[byte]byte
-	b85Alpha = []byte(
-		"0123456789" + "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "!#$%&()*+-;<=>?@^_`{|}~",
-	)
-)
-
-func init() {
-	b85Table = make(map[byte]byte)
-	for i, c := range b85Alpha {
-		b85Table[c] = byte(i)
-	}
-}
-
-// base85Decode decodes Base85-encoded data from src into dst. It uses the
-// alphabet defined by base85.c in the Git source tree. src must contain at
-// least len(dst) bytes of encoded data.
-func base85Decode(dst, src []byte) error {
-	var v uint32
-	var n, ndst int
-	for i, b := range src {
-		if b, ok := b85Table[b]; ok {
-			v = 85*v + uint32(b)
-			n++
-		} else {
-			return fmt.Errorf("invalid base85 byte at index %d: 0x%X", i, src[i])
-		}
-		if n == 5 {
-			rem := len(dst) - ndst
-			for j := 0; j < 4 && j < rem; j++ {
-				dst[ndst] = byte(v >> 24)
-				ndst++
-				v <<= 8
-			}
-			v = 0
-			n = 0
-		}
-	}
-	if n > 0 {
-		return fmt.Errorf("base85 data terminated by underpadded sequence")
-	}
-	if ndst < len(dst) {
-		return fmt.Errorf("base85 data underrun: %d < %d", ndst, len(dst))
-	}
-	return nil
-}
-
-// base85Encode encodes src in Base85, writing the result to dst. It uses the
-// alphabet defined by base85.c in the Git source tree.
-func base85Encode(dst, src []byte) {
-	var di, si int
-
-	encode := func(v uint32) {
-		dst[di+0] = b85Alpha[(v/(85*85*85*85))%85]
-		dst[di+1] = b85Alpha[(v/(85*85*85))%85]
-		dst[di+2] = b85Alpha[(v/(85*85))%85]
-		dst[di+3] = b85Alpha[(v/85)%85]
-		dst[di+4] = b85Alpha[v%85]
-	}
-
-	n := (len(src) / 4) * 4
-	for si < n {
-		encode(uint32(src[si+0])<<24 | uint32(src[si+1])<<16 | uint32(src[si+2])<<8 | uint32(src[si+3]))
-		si += 4
-		di += 5
-	}
-
-	var v uint32
-	switch len(src) - si {
-	case 3:
-		v |= uint32(src[si+2]) << 8
-		fallthrough
-	case 2:
-		v |= uint32(src[si+1]) << 16
-		fallthrough
-	case 1:
-		v |= uint32(src[si+0]) << 24
-		encode(v)
-	}
-}
-
-// base85Len returns the length of n bytes of Base85 encoded data.
-func base85Len(n int) int {
-	return (n + 3) / 4 * 5
-}
diff --git a/pkg/gitdiff/binary.go b/pkg/gitdiff/binary.go
deleted file mode 100644
index 282e323..0000000
--- a/pkg/gitdiff/binary.go
+++ /dev/null
@@ -1,186 +0,0 @@
-package gitdiff
-
-import (
-	"bytes"
-	"compress/zlib"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"strconv"
-	"strings"
-)
-
-func (p *parser) ParseBinaryFragments(f *File) (n int, err error) {
-	isBinary, hasData, err := p.ParseBinaryMarker()
-	if err != nil || !isBinary {
-		return 0, err
-	}
-
-	f.IsBinary = true
-	if !hasData {
-		return 0, nil
-	}
-
-	forward, err := p.ParseBinaryFragmentHeader()
-	if err != nil {
-		return 0, err
-	}
-	if forward == nil {
-		return 0, p.Errorf(0, "missing data for binary patch")
-	}
-	if err := p.ParseBinaryChunk(forward); err != nil {
-		return 0, err
-	}
-	f.BinaryFragment = forward
-
-	// valid for reverse to not exist, but it must be valid if present
-	reverse, err := p.ParseBinaryFragmentHeader()
-	if err != nil {
-		return 1, err
-	}
-	if reverse == nil {
-		return 1, nil
-	}
-	if err := p.ParseBinaryChunk(reverse); err != nil {
-		return 1, err
-	}
-	f.ReverseBinaryFragment = reverse
-
-	return 1, nil
-}
-
-func (p *parser) ParseBinaryMarker() (isBinary bool, hasData bool, err error) {
-	line := p.Line(0)
-	switch {
-	case line == "GIT binary patch\n":
-		hasData = true
-	case isBinaryNoDataMarker(line):
-	default:
-		return false, false, nil
-	}
-
-	if err = p.Next(); err != nil && err != io.EOF {
-		return false, false, err
-	}
-	return true, hasData, nil
-}
-
-func isBinaryNoDataMarker(line string) bool {
-	if strings.HasSuffix(line, " differ\n") {
-		return strings.HasPrefix(line, "Binary files ") || strings.HasPrefix(line, "Files ")
-	}
-	return false
-}
-
-func (p *parser) ParseBinaryFragmentHeader() (*BinaryFragment, error) {
-	parts := strings.SplitN(strings.TrimSuffix(p.Line(0), "\n"), " ", 2)
-	if len(parts) < 2 {
-		return nil, nil
-	}
-
-	frag := &BinaryFragment{}
-	switch parts[0] {
-	case "delta":
-		frag.Method = BinaryPatchDelta
-	case "literal":
-		frag.Method = BinaryPatchLiteral
-	default:
-		return nil, nil
-	}
-
-	var err error
-	if frag.Size, err = strconv.ParseInt(parts[1], 10, 64); err != nil {
-		nerr := err.(*strconv.NumError)
-		return nil, p.Errorf(0, "binary patch: invalid size: %v", nerr.Err)
-	}
-
-	if err := p.Next(); err != nil && err != io.EOF {
-		return nil, err
-	}
-	return frag, nil
-}
-
-func (p *parser) ParseBinaryChunk(frag *BinaryFragment) error {
-	// Binary fragments are encoded as a series of base85 encoded lines. Each
-	// line starts with a character in [A-Za-z] giving the number of bytes on
-	// the line, where A = 1 and z = 52, and ends with a newline character.
-	//
-	// The base85 encoding means each line is a multiple of 5 characters + 2
-	// additional characters for the length byte and the newline. The fragment
-	// ends with a blank line.
-	const (
-		shortestValidLine = "A00000\n"
-		maxBytesPerLine   = 52
-	)
-
-	var data bytes.Buffer
-	buf := make([]byte, maxBytesPerLine)
-	for {
-		line := p.Line(0)
-		if line == "\n" {
-			break
-		}
-		if len(line) < len(shortestValidLine) || (len(line)-2)%5 != 0 {
-			return p.Errorf(0, "binary patch: corrupt data line")
-		}
-
-		byteCount, seq := int(line[0]), line[1:len(line)-1]
-		switch {
-		case 'A' <= byteCount && byteCount <= 'Z':
-			byteCount = byteCount - 'A' + 1
-		case 'a' <= byteCount && byteCount <= 'z':
-			byteCount = byteCount - 'a' + 27
-		default:
-			return p.Errorf(0, "binary patch: invalid length byte")
-		}
-
-		// base85 encodes every 4 bytes into 5 characters, with up to 3 bytes of end padding
-		maxByteCount := len(seq) / 5 * 4
-		if byteCount > maxByteCount || byteCount < maxByteCount-3 {
-			return p.Errorf(0, "binary patch: incorrect byte count")
-		}
-
-		if err := base85Decode(buf[:byteCount], []byte(seq)); err != nil {
-			return p.Errorf(0, "binary patch: %v", err)
-		}
-		data.Write(buf[:byteCount])
-
-		if err := p.Next(); err != nil {
-			if err == io.EOF {
-				return p.Errorf(0, "binary patch: unexpected EOF")
-			}
-			return err
-		}
-	}
-
-	if err := inflateBinaryChunk(frag, &data); err != nil {
-		return p.Errorf(0, "binary patch: %v", err)
-	}
-
-	// consume the empty line that ended the fragment
-	if err := p.Next(); err != nil && err != io.EOF {
-		return err
-	}
-	return nil
-}
-
-func inflateBinaryChunk(frag *BinaryFragment, r io.Reader) error {
-	zr, err := zlib.NewReader(r)
-	if err != nil {
-		return err
-	}
-
-	data, err := ioutil.ReadAll(zr)
-	if err != nil {
-		return err
-	}
-	if err := zr.Close(); err != nil {
-		return err
-	}
-
-	if int64(len(data)) != frag.Size {
-		return fmt.Errorf("%d byte fragment inflated to %d", frag.Size, len(data))
-	}
-	frag.Data = data
-	return nil
-}
diff --git a/pkg/gitdiff/file_header.go b/pkg/gitdiff/file_header.go
deleted file mode 100644
index 7ae4bc9..0000000
--- a/pkg/gitdiff/file_header.go
+++ /dev/null
@@ -1,546 +0,0 @@
-package gitdiff
-
-import (
-	"fmt"
-	"io"
-	"os"
-	"strconv"
-	"strings"
-	"time"
-)
-
-const (
-	devNull = "/dev/null"
-)
-
-// ParseNextFileHeader finds and parses the next file header in the stream. If
-// a header is found, it returns a file and all input before the header. It
-// returns nil if no headers are found before the end of the input.
-func (p *parser) ParseNextFileHeader() (*File, string, error) {
-	var preamble strings.Builder
-	var file *File
-	for {
-		// check for disconnected fragment headers (corrupt patch)
-		frag, err := p.ParseTextFragmentHeader()
-		if err != nil {
-			// not a valid header, nothing to worry about
-			goto NextLine
-		}
-		if frag != nil {
-			return nil, "", p.Errorf(-1, "patch fragment without file header: %s", frag.Header())
-		}
-
-		// check for a git-generated patch
-		file, err = p.ParseGitFileHeader()
-		if err != nil {
-			return nil, "", err
-		}
-		if file != nil {
-			return file, preamble.String(), nil
-		}
-
-		// check for a "traditional" patch
-		file, err = p.ParseTraditionalFileHeader()
-		if err != nil {
-			return nil, "", err
-		}
-		if file != nil {
-			return file, preamble.String(), nil
-		}
-
-	NextLine:
-		preamble.WriteString(p.Line(0))
-		if err := p.Next(); err != nil {
-			if err == io.EOF {
-				break
-			}
-			return nil, "", err
-		}
-	}
-	return nil, preamble.String(), nil
-}
-
-func (p *parser) ParseGitFileHeader() (*File, error) {
-	const prefix = "diff --git "
-
-	if !strings.HasPrefix(p.Line(0), prefix) {
-		return nil, nil
-	}
-	header := p.Line(0)[len(prefix):]
-
-	defaultName, err := parseGitHeaderName(header)
-	if err != nil {
-		return nil, p.Errorf(0, "git file header: %v", err)
-	}
-
-	f := &File{}
-	for {
-		end, err := parseGitHeaderData(f, p.Line(1), defaultName)
-		if err != nil {
-			return nil, p.Errorf(1, "git file header: %v", err)
-		}
-
-		if err := p.Next(); err != nil {
-			if err == io.EOF {
-				break
-			}
-			return nil, err
-		}
-
-		if end {
-			break
-		}
-	}
-
-	if f.OldName == "" && f.NewName == "" {
-		if defaultName == "" {
-			return nil, p.Errorf(0, "git file header: missing filename information")
-		}
-		f.OldName = defaultName
-		f.NewName = defaultName
-	}
-
-	if (f.NewName == "" && !f.IsDelete) || (f.OldName == "" && !f.IsNew) {
-		return nil, p.Errorf(0, "git file header: missing filename information")
-	}
-
-	return f, nil
-}
-
-func (p *parser) ParseTraditionalFileHeader() (*File, error) {
-	const shortestValidFragHeader = "@@ -1 +1 @@\n"
-	const (
-		oldPrefix = "--- "
-		newPrefix = "+++ "
-	)
-
-	oldLine, newLine := p.Line(0), p.Line(1)
-
-	if !strings.HasPrefix(oldLine, oldPrefix) || !strings.HasPrefix(newLine, newPrefix) {
-		return nil, nil
-	}
-	// heuristic: only a file header if followed by a (probable) fragment header
-	if len(p.Line(2)) < len(shortestValidFragHeader) || !strings.HasPrefix(p.Line(2), "@@ -") {
-		return nil, nil
-	}
-
-	// advance past the first two lines so parser is after the header
-	// no EOF check needed because we know there are >=3 valid lines
-	if err := p.Next(); err != nil {
-		return nil, err
-	}
-	if err := p.Next(); err != nil {
-		return nil, err
-	}
-
-	oldName, _, err := parseName(oldLine[len(oldPrefix):], '\t', 0)
-	if err != nil {
-		return nil, p.Errorf(0, "file header: %v", err)
-	}
-
-	newName, _, err := parseName(newLine[len(newPrefix):], '\t', 0)
-	if err != nil {
-		return nil, p.Errorf(1, "file header: %v", err)
-	}
-
-	f := &File{}
-	switch {
-	case oldName == devNull || hasEpochTimestamp(oldLine):
-		f.IsNew = true
-		f.NewName = newName
-	case newName == devNull || hasEpochTimestamp(newLine):
-		f.IsDelete = true
-		f.OldName = oldName
-	default:
-		// if old name is a prefix of new name, use that instead
-		// this avoids picking variants like "file.bak" or "file~"
-		if strings.HasPrefix(newName, oldName) {
-			f.OldName = oldName
-			f.NewName = oldName
-		} else {
-			f.OldName = newName
-			f.NewName = newName
-		}
-	}
-
-	return f, nil
-}
-
-// parseGitHeaderName extracts a default file name from the Git file header
-// line. This is required for mode-only changes and creation/deletion of empty
-// files. Other types of patch include the file name(s) in the header data.
-// If the names in the header do not match because the patch is a rename,
-// return an empty default name.
-func parseGitHeaderName(header string) (string, error) {
-	header = strings.TrimSuffix(header, "\n")
-	if len(header) == 0 {
-		return "", nil
-	}
-
-	var err error
-	var first, second string
-
-	// there are 4 cases to account for:
-	//
-	//   1) unquoted unquoted
-	//   2) unquoted "quoted"
-	//   3) "quoted" unquoted
-	//   4) "quoted" "quoted"
-	//
-	quote := strings.IndexByte(header, '"')
-	switch {
-	case quote < 0:
-		// case 1
-		first = header
-
-	case quote > 0:
-		// case 2
-		first = header[:quote-1]
-		if !isSpace(header[quote-1]) {
-			return "", fmt.Errorf("missing separator")
-		}
-
-		second, _, err = parseQuotedName(header[quote:])
-		if err != nil {
-			return "", err
-		}
-
-	case quote == 0:
-		// case 3 or case 4
-		var n int
-		first, n, err = parseQuotedName(header)
-		if err != nil {
-			return "", err
-		}
-
-		// git accepts multiple spaces after a quoted name, but not after an
-		// unquoted name, since the name might end with one or more spaces
-		for n < len(header) && isSpace(header[n]) {
-			n++
-		}
-		if n == len(header) {
-			return "", nil
-		}
-
-		if header[n] == '"' {
-			second, _, err = parseQuotedName(header[n:])
-			if err != nil {
-				return "", err
-			}
-		} else {
-			second = header[n:]
-		}
-	}
-
-	first = trimTreePrefix(first, 1)
-	if second != "" {
-		if first == trimTreePrefix(second, 1) {
-			return first, nil
-		}
-		return "", nil
-	}
-
-	// at this point, both names are unquoted (case 1)
-	// since names may contain spaces, we can't use a known separator
-	// instead, look for a split that produces two equal names
-
-	for i := 0; i < len(first)-1; i++ {
-		if !isSpace(first[i]) {
-			continue
-		}
-		second = trimTreePrefix(first[i+1:], 1)
-		if name := first[:i]; name == second {
-			return name, nil
-		}
-	}
-	return "", nil
-}
-
-// parseGitHeaderData parses a single line of metadata from a Git file header.
-// It returns true when header parsing is complete; in that case, line was the
-// first line of non-header content.
-func parseGitHeaderData(f *File, line, defaultName string) (end bool, err error) {
-	if len(line) > 0 && line[len(line)-1] == '\n' {
-		line = line[:len(line)-1]
-	}
-
-	for _, hdr := range []struct {
-		prefix string
-		end    bool
-		parse  func(*File, string, string) error
-	}{
-		{"@@ -", true, nil},
-		{"--- ", false, parseGitHeaderOldName},
-		{"+++ ", false, parseGitHeaderNewName},
-		{"old mode ", false, parseGitHeaderOldMode},
-		{"new mode ", false, parseGitHeaderNewMode},
-		{"deleted file mode ", false, parseGitHeaderDeletedMode},
-		{"new file mode ", false, parseGitHeaderCreatedMode},
-		{"copy from ", false, parseGitHeaderCopyFrom},
-		{"copy to ", false, parseGitHeaderCopyTo},
-		{"rename old ", false, parseGitHeaderRenameFrom},
-		{"rename new ", false, parseGitHeaderRenameTo},
-		{"rename from ", false, parseGitHeaderRenameFrom},
-		{"rename to ", false, parseGitHeaderRenameTo},
-		{"similarity index ", false, parseGitHeaderScore},
-		{"dissimilarity index ", false, parseGitHeaderScore},
-		{"index ", false, parseGitHeaderIndex},
-	} {
-		if strings.HasPrefix(line, hdr.prefix) {
-			if hdr.parse != nil {
-				err = hdr.parse(f, line[len(hdr.prefix):], defaultName)
-			}
-			return hdr.end, err
-		}
-	}
-
-	// unknown line indicates the end of the header
-	// this usually happens if the diff is empty
-	return true, nil
-}
-
-func parseGitHeaderOldName(f *File, line, defaultName string) error {
-	name, _, err := parseName(line, '\t', 1)
-	if err != nil {
-		return err
-	}
-	if f.OldName == "" && !f.IsNew {
-		f.OldName = name
-		return nil
-	}
-	return verifyGitHeaderName(name, f.OldName, f.IsNew, "old")
-}
-
-func parseGitHeaderNewName(f *File, line, defaultName string) error {
-	name, _, err := parseName(line, '\t', 1)
-	if err != nil {
-		return err
-	}
-	if f.NewName == "" && !f.IsDelete {
-		f.NewName = name
-		return nil
-	}
-	return verifyGitHeaderName(name, f.NewName, f.IsDelete, "new")
-}
-
-func parseGitHeaderOldMode(f *File, line, defaultName string) (err error) {
-	f.OldMode, err = parseMode(strings.TrimSpace(line))
-	return
-}
-
-func parseGitHeaderNewMode(f *File, line, defaultName string) (err error) {
-	f.NewMode, err = parseMode(strings.TrimSpace(line))
-	return
-}
-
-func parseGitHeaderDeletedMode(f *File, line, defaultName string) error {
-	f.IsDelete = true
-	f.OldName = defaultName
-	return parseGitHeaderOldMode(f, line, defaultName)
-}
-
-func parseGitHeaderCreatedMode(f *File, line, defaultName string) error {
-	f.IsNew = true
-	f.NewName = defaultName
-	return parseGitHeaderNewMode(f, line, defaultName)
-}
-
-func parseGitHeaderCopyFrom(f *File, line, defaultName string) (err error) {
-	f.IsCopy = true
-	f.OldName, _, err = parseName(line, 0, 0)
-	return
-}
-
-func parseGitHeaderCopyTo(f *File, line, defaultName string) (err error) {
-	f.IsCopy = true
-	f.NewName, _, err = parseName(line, 0, 0)
-	return
-}
-
-func parseGitHeaderRenameFrom(f *File, line, defaultName string) (err error) {
-	f.IsRename = true
-	f.OldName, _, err = parseName(line, 0, 0)
-	return
-}
-
-func parseGitHeaderRenameTo(f *File, line, defaultName string) (err error) {
-	f.IsRename = true
-	f.NewName, _, err = parseName(line, 0, 0)
-	return
-}
-
-func parseGitHeaderScore(f *File, line, defaultName string) error {
-	score, err := strconv.ParseInt(strings.TrimSuffix(line, "%"), 10, 32)
-	if err != nil {
-		nerr := err.(*strconv.NumError)
-		return fmt.Errorf("invalid score line: %v", nerr.Err)
-	}
-	if score <= 100 {
-		f.Score = int(score)
-	}
-	return nil
-}
-
-func parseGitHeaderIndex(f *File, line, defaultName string) error {
-	const sep = ".."
-
-	// note that git stops parsing if the OIDs are too long to be valid
-	// checking this requires knowing if the repository uses SHA1 or SHA256
-	// hashes, which we don't know, so we just skip that check
-
-	parts := strings.SplitN(line, " ", 2)
-	oids := strings.SplitN(parts[0], sep, 2)
-
-	if len(oids) < 2 {
-		return fmt.Errorf("invalid index line: missing %q", sep)
-	}
-	f.OldOIDPrefix, f.NewOIDPrefix = oids[0], oids[1]
-
-	if len(parts) > 1 {
-		return parseGitHeaderOldMode(f, parts[1], defaultName)
-	}
-	return nil
-}
-
-func parseMode(s string) (os.FileMode, error) {
-	mode, err := strconv.ParseInt(s, 8, 32)
-	if err != nil {
-		nerr := err.(*strconv.NumError)
-		return os.FileMode(0), fmt.Errorf("invalid mode line: %v", nerr.Err)
-	}
-	return os.FileMode(mode), nil
-}
-
-// parseName extracts a file name from the start of a string and returns the
-// name and the index of the first character after the name. If the name is
-// unquoted and term is non-zero, parsing stops at the first occurrence of
-// term.
-//
-// If the name is exactly "/dev/null", no further processing occurs. Otherwise,
-// if dropPrefix is greater than zero, that number of prefix components
-// separated by forward slashes are dropped from the name and any duplicate
-// slashes are collapsed.
-func parseName(s string, term byte, dropPrefix int) (name string, n int, err error) {
-	if len(s) > 0 && s[0] == '"' {
-		name, n, err = parseQuotedName(s)
-	} else {
-		name, n, err = parseUnquotedName(s, term)
-	}
-	if err != nil {
-		return "", 0, err
-	}
-	if name == devNull {
-		return name, n, nil
-	}
-	return cleanName(name, dropPrefix), n, nil
-}
-
-func parseQuotedName(s string) (name string, n int, err error) {
-	for n = 1; n < len(s); n++ {
-		if s[n] == '"' && s[n-1] != '\\' {
-			n++
-			break
-		}
-	}
-	if n == 2 {
-		return "", 0, fmt.Errorf("missing name")
-	}
-	if name, err = strconv.Unquote(s[:n]); err != nil {
-		return "", 0, err
-	}
-	return name, n, err
-}
-
-func parseUnquotedName(s string, term byte) (name string, n int, err error) {
-	for n = 0; n < len(s); n++ {
-		if s[n] == '\n' {
-			break
-		}
-		if term > 0 && s[n] == term {
-			break
-		}
-	}
-	if n == 0 {
-		return "", 0, fmt.Errorf("missing name")
-	}
-	return s[:n], n, nil
-}
-
-// verifyGitHeaderName checks a parsed name against state set by previous lines
-func verifyGitHeaderName(parsed, existing string, isNull bool, side string) error {
-	if existing != "" {
-		if isNull {
-			return fmt.Errorf("expected %s, but filename is set to %s", devNull, existing)
-		}
-		if existing != parsed {
-			return fmt.Errorf("inconsistent %s filename", side)
-		}
-	}
-	if isNull && parsed != devNull {
-		return fmt.Errorf("expected %s", devNull)
-	}
-	return nil
-}
-
-// cleanName removes double slashes and drops prefix segments.
-func cleanName(name string, drop int) string {
-	var b strings.Builder
-	for i := 0; i < len(name); i++ {
-		if name[i] == '/' {
-			if i < len(name)-1 && name[i+1] == '/' {
-				continue
-			}
-			if drop > 0 {
-				drop--
-				b.Reset()
-				continue
-			}
-		}
-		b.WriteByte(name[i])
-	}
-	return b.String()
-}
-
-// trimTreePrefix removes up to n leading directory components from name.
-func trimTreePrefix(name string, n int) string {
-	i := 0
-	for ; i < len(name) && n > 0; i++ {
-		if name[i] == '/' {
-			n--
-		}
-	}
-	return name[i:]
-}
-
-// hasEpochTimestamp returns true if the string ends with a POSIX-formatted
-// timestamp for the UNIX epoch after a tab character. According to git, this
-// is used by GNU diff to mark creations and deletions.
-func hasEpochTimestamp(s string) bool {
-	const posixTimeLayout = "2006-01-02 15:04:05.9 -0700"
-
-	start := strings.IndexRune(s, '\t')
-	if start < 0 {
-		return false
-	}
-
-	ts := strings.TrimSuffix(s[start+1:], "\n")
-
-	// a valid timestamp can have optional ':' in zone specifier
-	// remove that if it exists so we have a single format
-	if len(ts) >= 3 && ts[len(ts)-3] == ':' {
-		ts = ts[:len(ts)-3] + ts[len(ts)-2:]
-	}
-
-	t, err := time.Parse(posixTimeLayout, ts)
-	if err != nil {
-		return false
-	}
-	if !t.Equal(time.Unix(0, 0)) {
-		return false
-	}
-	return true
-}
-
-func isSpace(c byte) bool {
-	return c == ' ' || c == '\t' || c == '\n'
-}
diff --git a/pkg/gitdiff/format.go b/pkg/gitdiff/format.go
deleted file mode 100644
index d97aba9..0000000
--- a/pkg/gitdiff/format.go
+++ /dev/null
@@ -1,281 +0,0 @@
-package gitdiff
-
-import (
-	"bytes"
-	"compress/zlib"
-	"fmt"
-	"io"
-	"strconv"
-)
-
-type formatter struct {
-	w   io.Writer
-	err error
-}
-
-func newFormatter(w io.Writer) *formatter {
-	return &formatter{w: w}
-}
-
-func (fm *formatter) Write(p []byte) (int, error) {
-	if fm.err != nil {
-		return len(p), nil
-	}
-	if _, err := fm.w.Write(p); err != nil {
-		fm.err = err
-	}
-	return len(p), nil
-}
-
-func (fm *formatter) WriteString(s string) (int, error) {
-	fm.Write([]byte(s))
-	return len(s), nil
-}
-
-func (fm *formatter) WriteByte(c byte) error {
-	fm.Write([]byte{c})
-	return nil
-}
-
-func (fm *formatter) WriteQuotedName(s string) {
-	qpos := 0
-	for i := 0; i < len(s); i++ {
-		ch := s[i]
-		if q, quoted := quoteByte(ch); quoted {
-			if qpos == 0 {
-				fm.WriteByte('"')
-			}
-			fm.WriteString(s[qpos:i])
-			fm.Write(q)
-			qpos = i + 1
-		}
-	}
-	fm.WriteString(s[qpos:])
-	if qpos > 0 {
-		fm.WriteByte('"')
-	}
-}
-
-var quoteEscapeTable = map[byte]byte{
-	'\a': 'a',
-	'\b': 'b',
-	'\t': 't',
-	'\n': 'n',
-	'\v': 'v',
-	'\f': 'f',
-	'\r': 'r',
-	'"':  '"',
-	'\\': '\\',
-}
-
-func quoteByte(b byte) ([]byte, bool) {
-	if q, ok := quoteEscapeTable[b]; ok {
-		return []byte{'\\', q}, true
-	}
-	if b < 0x20 || b >= 0x7F {
-		return []byte{
-			'\\',
-			'0' + (b>>6)&0o3,
-			'0' + (b>>3)&0o7,
-			'0' + (b>>0)&0o7,
-		}, true
-	}
-	return nil, false
-}
-
-func (fm *formatter) FormatFile(f *File) {
-	fm.WriteString("diff --git ")
-
-	var aName, bName string
-	switch {
-	case f.OldName == "":
-		aName = f.NewName
-		bName = f.NewName
-
-	case f.NewName == "":
-		aName = f.OldName
-		bName = f.OldName
-
-	default:
-		aName = f.OldName
-		bName = f.NewName
-	}
-
-	fm.WriteQuotedName("a/" + aName)
-	fm.WriteByte(' ')
-	fm.WriteQuotedName("b/" + bName)
-	fm.WriteByte('\n')
-
-	if f.OldMode != 0 {
-		if f.IsDelete {
-			fmt.Fprintf(fm, "deleted file mode %o\n", f.OldMode)
-		} else if f.NewMode != 0 {
-			fmt.Fprintf(fm, "old mode %o\n", f.OldMode)
-		}
-	}
-
-	if f.NewMode != 0 {
-		if f.IsNew {
-			fmt.Fprintf(fm, "new file mode %o\n", f.NewMode)
-		} else if f.OldMode != 0 {
-			fmt.Fprintf(fm, "new mode %o\n", f.NewMode)
-		}
-	}
-
-	if f.Score > 0 {
-		if f.IsCopy || f.IsRename {
-			fmt.Fprintf(fm, "similarity index %d%%\n", f.Score)
-		} else {
-			fmt.Fprintf(fm, "dissimilarity index %d%%\n", f.Score)
-		}
-	}
-
-	if f.IsCopy {
-		if f.OldName != "" {
-			fm.WriteString("copy from ")
-			fm.WriteQuotedName(f.OldName)
-			fm.WriteByte('\n')
-		}
-		if f.NewName != "" {
-			fm.WriteString("copy to ")
-			fm.WriteQuotedName(f.NewName)
-			fm.WriteByte('\n')
-		}
-	}
-
-	if f.IsRename {
-		if f.OldName != "" {
-			fm.WriteString("rename from ")
-			fm.WriteQuotedName(f.OldName)
-			fm.WriteByte('\n')
-		}
-		if f.NewName != "" {
-			fm.WriteString("rename to ")
-			fm.WriteQuotedName(f.NewName)
-			fm.WriteByte('\n')
-		}
-	}
-
-	if f.OldOIDPrefix != "" && f.NewOIDPrefix != "" {
-		fmt.Fprintf(fm, "index %s..%s", f.OldOIDPrefix, f.NewOIDPrefix)
-
-		// Mode is only included on the index line when it is not changing
-		if f.OldMode != 0 && ((f.NewMode == 0 && !f.IsDelete) || f.OldMode == f.NewMode) {
-			fmt.Fprintf(fm, " %o", f.OldMode)
-		}
-
-		fm.WriteByte('\n')
-	}
-
-	if f.IsBinary {
-		if f.BinaryFragment == nil {
-			fm.WriteString("Binary files ")
-			fm.WriteQuotedName("a/" + aName)
-			fm.WriteString(" and ")
-			fm.WriteQuotedName("b/" + bName)
-			fm.WriteString(" differ\n")
-		} else {
-			fm.WriteString("GIT binary patch\n")
-			fm.FormatBinaryFragment(f.BinaryFragment)
-			if f.ReverseBinaryFragment != nil {
-				fm.FormatBinaryFragment(f.ReverseBinaryFragment)
-			}
-		}
-	}
-
-	// The "---" and "+++" lines only appear for text patches with fragments
-	if len(f.TextFragments) > 0 {
-		fm.WriteString("--- ")
-		if f.OldName == "" {
-			fm.WriteString("/dev/null")
-		} else {
-			fm.WriteQuotedName("a/" + f.OldName)
-		}
-		fm.WriteByte('\n')
-
-		fm.WriteString("+++ ")
-		if f.NewName == "" {
-			fm.WriteString("/dev/null")
-		} else {
-			fm.WriteQuotedName("b/" + f.NewName)
-		}
-		fm.WriteByte('\n')
-
-		for _, frag := range f.TextFragments {
-			fm.FormatTextFragment(frag)
-		}
-	}
-}
-
-func (fm *formatter) FormatTextFragment(f *TextFragment) {
-	fm.FormatTextFragmentHeader(f)
-	fm.WriteByte('\n')
-
-	for _, line := range f.Lines {
-		fm.WriteString(line.Op.String())
-		fm.WriteString(line.Line)
-		if line.NoEOL() {
-			fm.WriteString("\n\\ No newline at end of file\n")
-		}
-	}
-}
-
-func (fm *formatter) FormatTextFragmentHeader(f *TextFragment) {
-	fmt.Fprintf(fm, "@@ -%d,%d +%d,%d @@", f.OldPosition, f.OldLines, f.NewPosition, f.NewLines)
-	if f.Comment != "" {
-		fm.WriteByte(' ')
-		fm.WriteString(f.Comment)
-	}
-}
-
-func (fm *formatter) FormatBinaryFragment(f *BinaryFragment) {
-	const (
-		maxBytesPerLine = 52
-	)
-
-	switch f.Method {
-	case BinaryPatchDelta:
-		fm.WriteString("delta ")
-	case BinaryPatchLiteral:
-		fm.WriteString("literal ")
-	}
-	fm.Write(strconv.AppendInt(nil, f.Size, 10))
-	fm.WriteByte('\n')
-
-	data := deflateBinaryChunk(f.Data)
-	n := (len(data) / maxBytesPerLine) * maxBytesPerLine
-
-	buf := make([]byte, base85Len(maxBytesPerLine))
-	for i := 0; i < n; i += maxBytesPerLine {
-		base85Encode(buf, data[i:i+maxBytesPerLine])
-		fm.WriteByte('z')
-		fm.Write(buf)
-		fm.WriteByte('\n')
-	}
-	if remainder := len(data) - n; remainder > 0 {
-		buf = buf[0:base85Len(remainder)]
-
-		sizeChar := byte(remainder)
-		if remainder <= 26 {
-			sizeChar = 'A' + sizeChar - 1
-		} else {
-			sizeChar = 'a' + sizeChar - 27
-		}
-
-		base85Encode(buf, data[n:])
-		fm.WriteByte(sizeChar)
-		fm.Write(buf)
-		fm.WriteByte('\n')
-	}
-	fm.WriteByte('\n')
-}
-
-func deflateBinaryChunk(data []byte) []byte {
-	var b bytes.Buffer
-
-	zw := zlib.NewWriter(&b)
-	_, _ = zw.Write(data)
-	_ = zw.Close()
-
-	return b.Bytes()
-}
diff --git a/pkg/gitdiff/gitdiff.go b/pkg/gitdiff/gitdiff.go
deleted file mode 100644
index 5365645..0000000
--- a/pkg/gitdiff/gitdiff.go
+++ /dev/null
@@ -1,230 +0,0 @@
-package gitdiff
-
-import (
-	"errors"
-	"fmt"
-	"os"
-	"strings"
-)
-
-// File describes changes to a single file. It can be either a text file or a
-// binary file.
-type File struct {
-	OldName string
-	NewName string
-
-	IsNew    bool
-	IsDelete bool
-	IsCopy   bool
-	IsRename bool
-
-	OldMode os.FileMode
-	NewMode os.FileMode
-
-	OldOIDPrefix string
-	NewOIDPrefix string
-	Score        int
-
-	// TextFragments contains the fragments describing changes to a text file. It
-	// may be empty if the file is empty or if only the mode changes.
-	TextFragments []*TextFragment
-
-	// IsBinary is true if the file is a binary file. If the patch includes
-	// binary data, BinaryFragment will be non-nil and describe the changes to
-	// the data. If the patch is reversible, ReverseBinaryFragment will also be
-	// non-nil and describe the changes needed to restore the original file
-	// after applying the changes in BinaryFragment.
-	IsBinary              bool
-	BinaryFragment        *BinaryFragment
-	ReverseBinaryFragment *BinaryFragment
-}
-
-// String returns a git diff representation of this file. The value can be
-// parsed by this library to obtain the same File, but may not be the same as
-// the original input.
-func (f *File) String() string {
-	var diff strings.Builder
-	newFormatter(&diff).FormatFile(f)
-	return diff.String()
-}
-
-// TextFragment describes changed lines starting at a specific line in a text file.
-type TextFragment struct {
-	Comment string
-
-	OldPosition int64
-	OldLines    int64
-
-	NewPosition int64
-	NewLines    int64
-
-	LinesAdded   int64
-	LinesDeleted int64
-
-	LeadingContext  int64
-	TrailingContext int64
-
-	Lines []Line
-}
-
-// String returns a git diff format of this fragment. See [File.String] for
-// more details on this format.
-func (f *TextFragment) String() string {
-	var diff strings.Builder
-	newFormatter(&diff).FormatTextFragment(f)
-	return diff.String()
-}
-
-// Header returns a git diff header of this fragment. See [File.String] for
-// more details on this format.
-func (f *TextFragment) Header() string {
-	var hdr strings.Builder
-	newFormatter(&hdr).FormatTextFragmentHeader(f)
-	return hdr.String()
-}
-
-// Validate checks that the fragment is self-consistent and appliable. Validate
-// returns an error if and only if the fragment is invalid.
-func (f *TextFragment) Validate() error {
-	if f == nil {
-		return errors.New("nil fragment")
-	}
-
-	var (
-		oldLines, newLines                     int64
-		leadingContext, trailingContext        int64
-		contextLines, addedLines, deletedLines int64
-	)
-
-	// count the types of lines in the fragment content
-	for i, line := range f.Lines {
-		switch line.Op {
-		case OpContext:
-			oldLines++
-			newLines++
-			contextLines++
-			if addedLines == 0 && deletedLines == 0 {
-				leadingContext++
-			} else {
-				trailingContext++
-			}
-		case OpAdd:
-			newLines++
-			addedLines++
-			trailingContext = 0
-		case OpDelete:
-			oldLines++
-			deletedLines++
-			trailingContext = 0
-		default:
-			return fmt.Errorf("unknown operator %q on line %d", line.Op, i+1)
-		}
-	}
-
-	// check the actual counts against the reported counts
-	if oldLines != f.OldLines {
-		return lineCountErr("old", oldLines, f.OldLines)
-	}
-	if newLines != f.NewLines {
-		return lineCountErr("new", newLines, f.NewLines)
-	}
-	if leadingContext != f.LeadingContext {
-		return lineCountErr("leading context", leadingContext, f.LeadingContext)
-	}
-	if trailingContext != f.TrailingContext {
-		return lineCountErr("trailing context", trailingContext, f.TrailingContext)
-	}
-	if addedLines != f.LinesAdded {
-		return lineCountErr("added", addedLines, f.LinesAdded)
-	}
-	if deletedLines != f.LinesDeleted {
-		return lineCountErr("deleted", deletedLines, f.LinesDeleted)
-	}
-
-	// if a file is being created, it can only contain additions
-	if f.OldPosition == 0 && f.OldLines != 0 {
-		return errors.New("file creation fragment contains context or deletion lines")
-	}
-
-	return nil
-}
-
-func lineCountErr(kind string, actual, reported int64) error {
-	return fmt.Errorf("fragment contains %d %s lines but reports %d", actual, kind, reported)
-}
-
-// Line is a line in a text fragment.
-type Line struct {
-	Op   LineOp
-	Line string
-}
-
-func (fl Line) String() string {
-	return fl.Op.String() + fl.Line
-}
-
-// Old returns true if the line appears in the old content of the fragment.
-func (fl Line) Old() bool {
-	return fl.Op == OpContext || fl.Op == OpDelete
-}
-
-// New returns true if the line appears in the new content of the fragment.
-func (fl Line) New() bool {
-	return fl.Op == OpContext || fl.Op == OpAdd
-}
-
-// NoEOL returns true if the line is missing a trailing newline character.
-func (fl Line) NoEOL() bool {
-	return len(fl.Line) == 0 || fl.Line[len(fl.Line)-1] != '\n'
-}
-
-// LineOp describes the type of a text fragment line: context, added, or removed.
-type LineOp int
-
-const (
-	// OpContext indicates a context line
-	OpContext LineOp = iota
-	// OpDelete indicates a deleted line
-	OpDelete
-	// OpAdd indicates an added line
-	OpAdd
-)
-
-func (op LineOp) String() string {
-	switch op {
-	case OpContext:
-		return " "
-	case OpDelete:
-		return "-"
-	case OpAdd:
-		return "+"
-	}
-	return "?"
-}
-
-// BinaryFragment describes changes to a binary file.
-type BinaryFragment struct {
-	Method BinaryPatchMethod
-	Size   int64
-	Data   []byte
-}
-
-// BinaryPatchMethod is the method used to create and apply the binary patch.
-type BinaryPatchMethod int
-
-const (
-	// BinaryPatchDelta indicates the data uses Git's packfile encoding
-	BinaryPatchDelta BinaryPatchMethod = iota
-	// BinaryPatchLiteral indicates the data is the exact file content
-	BinaryPatchLiteral
-)
-
-// String returns a git diff format of this fragment. Due to differences in
-// zlib implementation between Go and Git, encoded binary data in the result
-// will likely differ from what Git produces for the same input. See
-// [File.String] for more details on this format.
-func (f *BinaryFragment) String() string {
-	var diff strings.Builder
-	newFormatter(&diff).FormatBinaryFragment(f)
-	return diff.String()
-}
diff --git a/pkg/gitdiff/io.go b/pkg/gitdiff/io.go
deleted file mode 100644
index 8143238..0000000
--- a/pkg/gitdiff/io.go
+++ /dev/null
@@ -1,220 +0,0 @@
-package gitdiff
-
-import (
-	"errors"
-	"io"
-)
-
-const (
-	byteBufferSize  = 32 * 1024 // from io.Copy
-	lineBufferSize  = 32
-	indexBufferSize = 1024
-)
-
-// LineReaderAt is the interface that wraps the ReadLinesAt method.
-//
-// ReadLinesAt reads len(lines) into lines starting at line offset. It returns
-// the number of lines read (0 <= n <= len(lines)) and any error encountered.
-// Line numbers are zero-indexed.
-//
-// If n < len(lines), ReadLinesAt returns a non-nil error explaining why more
-// lines were not returned.
-//
-// Lines read by ReadLinesAt include the newline character. The last line does
-// not have a final newline character if the input ends without one.
-type LineReaderAt interface {
-	ReadLinesAt(lines [][]byte, offset int64) (n int, err error)
-}
-
-type lineReaderAt struct {
-	r     io.ReaderAt
-	index []int64
-	eof   bool
-}
-
-func (r *lineReaderAt) ReadLinesAt(lines [][]byte, offset int64) (n int, err error) {
-	if offset < 0 {
-		return 0, errors.New("ReadLinesAt: negative offset")
-	}
-	if len(lines) == 0 {
-		return 0, nil
-	}
-
-	count := len(lines)
-	startLine := offset
-	endLine := startLine + int64(count)
-
-	if endLine > int64(len(r.index)) && !r.eof {
-		if err := r.indexTo(endLine); err != nil {
-			return 0, err
-		}
-	}
-	if startLine >= int64(len(r.index)) {
-		return 0, io.EOF
-	}
-
-	buf, byteOffset, err := r.readBytes(startLine, int64(count))
-	if err != nil {
-		return 0, err
-	}
-
-	for n = 0; n < count && startLine+int64(n) < int64(len(r.index)); n++ {
-		lineno := startLine + int64(n)
-		start, end := int64(0), r.index[lineno]-byteOffset
-		if lineno > 0 {
-			start = r.index[lineno-1] - byteOffset
-		}
-		lines[n] = buf[start:end]
-	}
-
-	if n < count {
-		return n, io.EOF
-	}
-	return n, nil
-}
-
-// indexTo reads data and computes the line index until there is information
-// for line or a read returns io.EOF. It returns an error if and only if there
-// is an error reading data.
-func (r *lineReaderAt) indexTo(line int64) error {
-	var buf [indexBufferSize]byte
-
-	offset := r.lastOffset()
-	for int64(len(r.index)) < line {
-		n, err := r.r.ReadAt(buf[:], offset)
-		if err != nil && err != io.EOF {
-			return err
-		}
-		for _, b := range buf[:n] {
-			offset++
-			if b == '\n' {
-				r.index = append(r.index, offset)
-			}
-		}
-		if err == io.EOF {
-			if offset > r.lastOffset() {
-				r.index = append(r.index, offset)
-			}
-			r.eof = true
-			break
-		}
-	}
-	return nil
-}
-
-func (r *lineReaderAt) lastOffset() int64 {
-	if n := len(r.index); n > 0 {
-		return r.index[n-1]
-	}
-	return 0
-}
-
-// readBytes reads the bytes of the n lines starting at line and returns the
-// bytes and the offset of the first byte in the underlying source.
-func (r *lineReaderAt) readBytes(line, n int64) (b []byte, offset int64, err error) {
-	indexLen := int64(len(r.index))
-
-	var size int64
-	if line > indexLen {
-		offset = r.index[indexLen-1]
-	} else if line > 0 {
-		offset = r.index[line-1]
-	}
-	if n > 0 {
-		if line+n > indexLen {
-			size = r.index[indexLen-1] - offset
-		} else {
-			size = r.index[line+n-1] - offset
-		}
-	}
-
-	b = make([]byte, size)
-	if _, err := r.r.ReadAt(b, offset); err != nil {
-		if err == io.EOF {
-			err = errors.New("ReadLinesAt: corrupt line index or changed source data")
-		}
-		return nil, 0, err
-	}
-	return b, offset, nil
-}
-
-func isLen(r io.ReaderAt, n int64) (bool, error) {
-	off := n - 1
-	if off < 0 {
-		off = 0
-	}
-
-	var b [2]byte
-	nr, err := r.ReadAt(b[:], off)
-	if err == io.EOF {
-		return (n == 0 && nr == 0) || (n > 0 && nr == 1), nil
-	}
-	return false, err
-}
-
-// copyFrom writes bytes starting from offset off in src to dst stopping at the
-// end of src or at the first error. copyFrom returns the number of bytes
-// written and any error.
-func copyFrom(dst io.Writer, src io.ReaderAt, off int64) (written int64, err error) {
-	buf := make([]byte, byteBufferSize)
-	for {
-		nr, rerr := src.ReadAt(buf, off)
-		if nr > 0 {
-			nw, werr := dst.Write(buf[0:nr])
-			if nw > 0 {
-				written += int64(nw)
-			}
-			if werr != nil {
-				err = werr
-				break
-			}
-			if nr != nw {
-				err = io.ErrShortWrite
-				break
-			}
-			off += int64(nr)
-		}
-		if rerr != nil {
-			if rerr != io.EOF {
-				err = rerr
-			}
-			break
-		}
-	}
-	return written, err
-}
-
-// copyLinesFrom writes lines starting from line off in src to dst stopping at
-// the end of src or at the first error. copyLinesFrom returns the number of
-// lines written and any error.
-func copyLinesFrom(dst io.Writer, src LineReaderAt, off int64) (written int64, err error) {
-	buf := make([][]byte, lineBufferSize)
-ReadLoop:
-	for {
-		nr, rerr := src.ReadLinesAt(buf, off)
-		if nr > 0 {
-			for _, line := range buf[0:nr] {
-				nw, werr := dst.Write(line)
-				if nw > 0 {
-					written++
-				}
-				if werr != nil {
-					err = werr
-					break ReadLoop
-				}
-				if len(line) != nw {
-					err = io.ErrShortWrite
-					break ReadLoop
-				}
-			}
-			off += int64(nr)
-		}
-		if rerr != nil {
-			if rerr != io.EOF {
-				err = rerr
-			}
-			break
-		}
-	}
-	return written, err
-}
diff --git a/pkg/gitdiff/parser.go b/pkg/gitdiff/parser.go
deleted file mode 100644
index e8f8430..0000000
--- a/pkg/gitdiff/parser.go
+++ /dev/null
@@ -1,142 +0,0 @@
-// Package gitdiff parses and applies patches generated by Git. It supports
-// line-oriented text patches, binary patches, and can also parse standard
-// unified diffs generated by other tools.
-package gitdiff
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-)
-
-// Parse parses a patch with changes to one or more files. Any content before
-// the first file is returned as the second value. If an error occurs while
-// parsing, it returns all files parsed before the error.
-//
-// Parse expects to receive a single patch. If the input may contain multiple
-// patches (for example, if it is an mbox file), callers should split it into
-// individual patches and call Parse on each one.
-func Parse(r io.Reader) ([]*File, string, error) {
-	p := newParser(r)
-
-	if err := p.Next(); err != nil {
-		if err == io.EOF {
-			return nil, "", nil
-		}
-		return nil, "", err
-	}
-
-	var preamble string
-	var files []*File
-	for {
-		file, pre, err := p.ParseNextFileHeader()
-		if err != nil {
-			return files, preamble, err
-		}
-		if len(files) == 0 {
-			preamble = pre
-		}
-		if file == nil {
-			break
-		}
-
-		for _, fn := range []func(*File) (int, error){
-			p.ParseTextFragments,
-			p.ParseBinaryFragments,
-		} {
-			n, err := fn(file)
-			if err != nil {
-				return files, preamble, err
-			}
-			if n > 0 {
-				break
-			}
-		}
-
-		files = append(files, file)
-	}
-
-	return files, preamble, nil
-}
-
-// TODO(bkeyes): consider exporting the parser type with configuration
-// this would enable OID validation, p-value guessing, and prefix stripping
-// by allowing users to set or override defaults
-
-// parser invariants:
-// - methods that parse objects:
-//     - start with the parser on the first line of the first object
-//     - if returning nil, do not advance
-//     - if returning an error, do not advance past the object
-//     - if returning an object, advance to the first line after the object
-// - any exported parsing methods must initialize the parser by calling Next()
-
-type stringReader interface {
-	ReadString(delim byte) (string, error)
-}
-
-type parser struct {
-	r stringReader
-
-	eof    bool
-	lineno int64
-	lines  [3]string
-}
-
-func newParser(r io.Reader) *parser {
-	if r, ok := r.(stringReader); ok {
-		return &parser{r: r}
-	}
-	return &parser{r: bufio.NewReader(r)}
-}
-
-// Next advances the parser by one line. It returns any error encountered while
-// reading the line, including io.EOF when the end of stream is reached.
-func (p *parser) Next() error {
-	if p.eof {
-		return io.EOF
-	}
-
-	if p.lineno == 0 {
-		// on first call to next, need to shift in all lines
-		for i := 0; i < len(p.lines)-1; i++ {
-			if err := p.shiftLines(); err != nil && err != io.EOF {
-				return err
-			}
-		}
-	}
-
-	err := p.shiftLines()
-	if err != nil && err != io.EOF {
-		return err
-	}
-
-	p.lineno++
-	if p.lines[0] == "" {
-		p.eof = true
-		return io.EOF
-	}
-	return nil
-}
-
-func (p *parser) shiftLines() (err error) {
-	for i := 0; i < len(p.lines)-1; i++ {
-		p.lines[i] = p.lines[i+1]
-	}
-	p.lines[len(p.lines)-1], err = p.r.ReadString('\n')
-	return
-}
-
-// Line returns a line from the parser without advancing it. A delta of 0
-// returns the current line, while higher deltas return read-ahead lines. It
-// returns an empty string if the delta is higher than the available lines,
-// either because of the buffer size or because the parser reached the end of
-// the input. Valid lines always contain at least a newline character.
-func (p *parser) Line(delta uint) string {
-	return p.lines[delta]
-}
-
-// Errorf generates an error and appends the current line information.
-func (p *parser) Errorf(delta int64, msg string, args ...interface{}) error {
-	return fmt.Errorf("gitdiff: line %d: %s", p.lineno+delta, fmt.Sprintf(msg, args...))
-}
diff --git a/pkg/gitdiff/patch_header.go b/pkg/gitdiff/patch_header.go
deleted file mode 100644
index f047059..0000000
--- a/pkg/gitdiff/patch_header.go
+++ /dev/null
@@ -1,470 +0,0 @@
-package gitdiff
-
-import (
-	"bufio"
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"mime/quotedprintable"
-	"net/mail"
-	"strconv"
-	"strings"
-	"time"
-	"unicode"
-)
-
-const (
-	mailHeaderPrefix        = "From "
-	prettyHeaderPrefix      = "commit "
-	mailMinimumHeaderPrefix = "From:"
-)
-
-// PatchHeader is a parsed version of the preamble content that appears before
-// the first diff in a patch. It includes metadata about the patch, such as the
-// author and a subject.
-type PatchHeader struct {
-	// The SHA of the commit the patch was generated from. Empty if the SHA is
-	// not included in the header.
-	SHA string
-
-	// The author details of the patch. If these details are not included in
-	// the header, Author is nil and AuthorDate is the zero time.
-	Author     *PatchIdentity
-	AuthorDate time.Time
-
-	// The committer details of the patch. If these details are not included in
-	// the header, Committer is nil and CommitterDate is the zero time.
-	Committer     *PatchIdentity
-	CommitterDate time.Time
-
-	// The title and body of the commit message describing the changes in the
-	// patch. Empty if no message is included in the header.
-	Title string
-	Body  string
-
-	// If the preamble looks like an email, ParsePatchHeader will
-	// remove prefixes such as `Re: ` and `[PATCH v3 5/17]` from the
-	// Title and place them here.
-	SubjectPrefix string
-
-	// If the preamble looks like an email, and it contains a `---`
-	// line, that line will be removed and everything after it will be
-	// placed in BodyAppendix.
-	BodyAppendix string
-}
-
-// Message returns the commit message for the header. The message consists of
-// the title and the body separated by an empty line.
-func (h *PatchHeader) Message() string {
-	var msg strings.Builder
-	if h != nil {
-		msg.WriteString(h.Title)
-		if h.Body != "" {
-			msg.WriteString("\n\n")
-			msg.WriteString(h.Body)
-		}
-	}
-	return msg.String()
-}
-
-// ParsePatchDate parses a patch date string. It returns the parsed time or an
-// error if s has an unknown format. ParsePatchDate supports the iso, rfc,
-// short, raw, unix, and default formats (with local variants) used by the
-// --date flag in Git.
-func ParsePatchDate(s string) (time.Time, error) {
-	const (
-		isoFormat          = "2006-01-02 15:04:05 -0700"
-		isoStrictFormat    = "2006-01-02T15:04:05-07:00"
-		rfc2822Format      = "Mon, 2 Jan 2006 15:04:05 -0700"
-		shortFormat        = "2006-01-02"
-		defaultFormat      = "Mon Jan 2 15:04:05 2006 -0700"
-		defaultLocalFormat = "Mon Jan 2 15:04:05 2006"
-	)
-
-	if s == "" {
-		return time.Time{}, nil
-	}
-
-	for _, fmt := range []string{
-		isoFormat,
-		isoStrictFormat,
-		rfc2822Format,
-		shortFormat,
-		defaultFormat,
-		defaultLocalFormat,
-	} {
-		if t, err := time.ParseInLocation(fmt, s, time.Local); err == nil {
-			return t, nil
-		}
-	}
-
-	// unix format
-	if unix, err := strconv.ParseInt(s, 10, 64); err == nil {
-		return time.Unix(unix, 0), nil
-	}
-
-	// raw format
-	if space := strings.IndexByte(s, ' '); space > 0 {
-		unix, uerr := strconv.ParseInt(s[:space], 10, 64)
-		zone, zerr := time.Parse("-0700", s[space+1:])
-		if uerr == nil && zerr == nil {
-			return time.Unix(unix, 0).In(zone.Location()), nil
-		}
-	}
-
-	return time.Time{}, fmt.Errorf("unknown date format: %s", s)
-}
-
-// A PatchHeaderOption modifies the behavior of ParsePatchHeader.
-type PatchHeaderOption func(*patchHeaderOptions)
-
-// SubjectCleanMode controls how ParsePatchHeader cleans subject lines when
-// parsing mail-formatted patches.
-type SubjectCleanMode int
-
-const (
-	// SubjectCleanWhitespace removes leading and trailing whitespace.
-	SubjectCleanWhitespace SubjectCleanMode = iota
-
-	// SubjectCleanAll removes leading and trailing whitespace, leading "Re:",
-	// "re:", and ":" strings, and leading strings enclosed by '[' and ']'.
-	// This is the default behavior of git (see `git mailinfo`) and this
-	// package.
-	SubjectCleanAll
-
-	// SubjectCleanPatchOnly is the same as SubjectCleanAll, but only removes
-	// leading strings enclosed by '[' and ']' if they start with "PATCH".
-	SubjectCleanPatchOnly
-)
-
-// WithSubjectCleanMode sets the SubjectCleanMode for header parsing. By
-// default, uses SubjectCleanAll.
-func WithSubjectCleanMode(m SubjectCleanMode) PatchHeaderOption {
-	return func(opts *patchHeaderOptions) {
-		opts.subjectCleanMode = m
-	}
-}
-
-type patchHeaderOptions struct {
-	subjectCleanMode SubjectCleanMode
-}
-
-// ParsePatchHeader parses the preamble string returned by [Parse] into a
-// PatchHeader. Due to the variety of header formats, some fields of the parsed
-// PatchHeader may be unset after parsing.
-//
-// Supported formats are the short, medium, full, fuller, and email pretty
-// formats used by `git diff`, `git log`, and `git show` and the UNIX mailbox
-// format used by `git format-patch`.
-//
-// When parsing mail-formatted headers, ParsePatchHeader tries to remove
-// email-specific content from the title and body:
-//
-//   - Based on the SubjectCleanMode, remove prefixes like reply markers and
-//     "[PATCH]" strings from the subject, saving any removed content in the
-//     SubjectPrefix field. Parsing always discards leading and trailing
-//     whitespace from the subject line. The default mode is SubjectCleanAll.
-//
-//   - If the body contains a "---" line (3 hyphens), remove that line and any
-//     content after it from the body and save it in the BodyAppendix field.
-//
-// ParsePatchHeader tries to process content it does not understand wthout
-// returning errors, but will return errors if well-identified content like
-// dates or identies uses unknown or invalid formats.
-func ParsePatchHeader(header string, options ...PatchHeaderOption) (*PatchHeader, error) {
-	opts := patchHeaderOptions{
-		subjectCleanMode: SubjectCleanAll, // match git defaults
-	}
-	for _, optFn := range options {
-		optFn(&opts)
-	}
-
-	header = strings.TrimSpace(header)
-	if header == "" {
-		return &PatchHeader{}, nil
-	}
-
-	var firstLine, rest string
-	if idx := strings.IndexByte(header, '\n'); idx >= 0 {
-		firstLine = header[:idx]
-		rest = header[idx+1:]
-	} else {
-		firstLine = header
-		rest = ""
-	}
-
-	switch {
-	case strings.HasPrefix(firstLine, mailHeaderPrefix):
-		return parseHeaderMail(firstLine, strings.NewReader(rest), opts)
-
-	case strings.HasPrefix(firstLine, mailMinimumHeaderPrefix):
-		// With a minimum header, the first line is part of the actual mail
-		// content and needs to be parsed as part of the "rest"
-		return parseHeaderMail("", strings.NewReader(header), opts)
-
-	case strings.HasPrefix(firstLine, prettyHeaderPrefix):
-		return parseHeaderPretty(firstLine, strings.NewReader(rest))
-	}
-
-	return nil, errors.New("unrecognized patch header format")
-}
-
-func parseHeaderPretty(prettyLine string, r io.Reader) (*PatchHeader, error) {
-	const (
-		authorPrefix     = "Author:"
-		commitPrefix     = "Commit:"
-		datePrefix       = "Date:"
-		authorDatePrefix = "AuthorDate:"
-		commitDatePrefix = "CommitDate:"
-	)
-
-	h := &PatchHeader{}
-
-	prettyLine = strings.TrimPrefix(prettyLine, prettyHeaderPrefix)
-	if i := strings.IndexByte(prettyLine, ' '); i > 0 {
-		h.SHA = prettyLine[:i]
-	} else {
-		h.SHA = prettyLine
-	}
-
-	s := bufio.NewScanner(r)
-	for s.Scan() {
-		line := s.Text()
-
-		// empty line marks end of fields, remaining lines are title/message
-		if strings.TrimSpace(line) == "" {
-			break
-		}
-
-		switch {
-		case strings.HasPrefix(line, authorPrefix):
-			u, err := ParsePatchIdentity(line[len(authorPrefix):])
-			if err != nil {
-				return nil, err
-			}
-			h.Author = &u
-
-		case strings.HasPrefix(line, commitPrefix):
-			u, err := ParsePatchIdentity(line[len(commitPrefix):])
-			if err != nil {
-				return nil, err
-			}
-			h.Committer = &u
-
-		case strings.HasPrefix(line, datePrefix):
-			d, err := ParsePatchDate(strings.TrimSpace(line[len(datePrefix):]))
-			if err != nil {
-				return nil, err
-			}
-			h.AuthorDate = d
-
-		case strings.HasPrefix(line, authorDatePrefix):
-			d, err := ParsePatchDate(strings.TrimSpace(line[len(authorDatePrefix):]))
-			if err != nil {
-				return nil, err
-			}
-			h.AuthorDate = d
-
-		case strings.HasPrefix(line, commitDatePrefix):
-			d, err := ParsePatchDate(strings.TrimSpace(line[len(commitDatePrefix):]))
-			if err != nil {
-				return nil, err
-			}
-			h.CommitterDate = d
-		}
-	}
-	if s.Err() != nil {
-		return nil, s.Err()
-	}
-
-	title, indent := scanMessageTitle(s)
-	if s.Err() != nil {
-		return nil, s.Err()
-	}
-	h.Title = title
-
-	if title != "" {
-		// Don't check for an appendix, pretty headers do not contain them
-		body, _ := scanMessageBody(s, indent, false)
-		if s.Err() != nil {
-			return nil, s.Err()
-		}
-		h.Body = body
-	}
-
-	return h, nil
-}
-
-func scanMessageTitle(s *bufio.Scanner) (title string, indent string) {
-	var b strings.Builder
-	for i := 0; s.Scan(); i++ {
-		line := s.Text()
-		trimLine := strings.TrimSpace(line)
-		if trimLine == "" {
-			break
-		}
-
-		if i == 0 {
-			if start := strings.IndexFunc(line, func(c rune) bool { return !unicode.IsSpace(c) }); start > 0 {
-				indent = line[:start]
-			}
-		}
-		if b.Len() > 0 {
-			b.WriteByte(' ')
-		}
-		b.WriteString(trimLine)
-	}
-	return b.String(), indent
-}
-
-func scanMessageBody(s *bufio.Scanner, indent string, separateAppendix bool) (string, string) {
-	// Body and appendix
-	var body, appendix strings.Builder
-	c := &body
-	var empty int
-	for i := 0; s.Scan(); i++ {
-		line := s.Text()
-
-		line = strings.TrimRightFunc(line, unicode.IsSpace)
-		line = strings.TrimPrefix(line, indent)
-
-		if line == "" {
-			empty++
-			continue
-		}
-
-		// If requested, parse out "appendix" information (often added
-		// by `git format-patch` and removed by `git am`).
-		if separateAppendix && c == &body && line == "---" {
-			c = &appendix
-			continue
-		}
-
-		if c.Len() > 0 {
-			c.WriteByte('\n')
-			if empty > 0 {
-				c.WriteByte('\n')
-			}
-		}
-		empty = 0
-
-		c.WriteString(line)
-	}
-	return body.String(), appendix.String()
-}
-
-func parseHeaderMail(mailLine string, r io.Reader, opts patchHeaderOptions) (*PatchHeader, error) {
-	msg, err := mail.ReadMessage(r)
-	if err != nil {
-		return nil, err
-	}
-
-	h := &PatchHeader{}
-
-	if strings.HasPrefix(mailLine, mailHeaderPrefix) {
-		mailLine = strings.TrimPrefix(mailLine, mailHeaderPrefix)
-		if i := strings.IndexByte(mailLine, ' '); i > 0 {
-			h.SHA = mailLine[:i]
-		}
-	}
-
-	from := msg.Header.Get("From")
-	if from != "" {
-		u, err := ParsePatchIdentity(from)
-		if err != nil {
-			return nil, err
-		}
-		h.Author = &u
-	}
-
-	date := msg.Header.Get("Date")
-	if date != "" {
-		d, err := ParsePatchDate(date)
-		if err != nil {
-			return nil, err
-		}
-		h.AuthorDate = d
-	}
-
-	subject := msg.Header.Get("Subject")
-	h.SubjectPrefix, h.Title = cleanSubject(subject, opts.subjectCleanMode)
-
-	s := bufio.NewScanner(msg.Body)
-	h.Body, h.BodyAppendix = scanMessageBody(s, "", true)
-	if s.Err() != nil {
-		return nil, s.Err()
-	}
-
-	return h, nil
-}
-
-func cleanSubject(s string, mode SubjectCleanMode) (prefix string, subject string) {
-	switch mode {
-	case SubjectCleanAll, SubjectCleanPatchOnly:
-	case SubjectCleanWhitespace:
-		return "", strings.TrimSpace(decodeSubject(s))
-	default:
-		panic(fmt.Sprintf("unknown clean mode: %d", mode))
-	}
-
-	// Based on the algorithm from Git in mailinfo.c:cleanup_subject()
-	// If compatibility with `git am` drifts, go there to see if there are any updates.
-
-	at := 0
-	for at < len(s) {
-		switch s[at] {
-		case 'r', 'R':
-			// Detect re:, Re:, rE: and RE:
-			if at+2 < len(s) && (s[at+1] == 'e' || s[at+1] == 'E') && s[at+2] == ':' {
-				at += 3
-				continue
-			}
-
-		case ' ', '\t', ':':
-			// Delete whitespace and duplicate ':' characters
-			at++
-			continue
-
-		case '[':
-			if i := strings.IndexByte(s[at:], ']'); i > 0 {
-				if mode == SubjectCleanAll || strings.Contains(s[at:at+i+1], "PATCH") {
-					at += i + 1
-					continue
-				}
-			}
-		}
-
-		// Nothing was removed, end processing
-		break
-	}
-
-	prefix = strings.TrimLeftFunc(s[:at], unicode.IsSpace)
-	subject = strings.TrimRightFunc(decodeSubject(s[at:]), unicode.IsSpace)
-	return
-}
-
-// Decodes a subject line. Currently only supports quoted-printable UTF-8. This format is the result
-// of a `git format-patch` when the commit title has a non-ASCII character (i.e. an emoji).
-// See for reference: https://stackoverflow.com/questions/27695749/gmail-api-not-respecting-utf-encoding-in-subject
-func decodeSubject(encoded string) string {
-	if !strings.HasPrefix(encoded, "=?UTF-8?q?") {
-		// not UTF-8 encoded
-		return encoded
-	}
-
-	// If the subject is too long, `git format-patch` may produce a subject line across
-	// multiple lines. When parsed, this can look like the following:
-	// <UTF8-prefix><first-line> <UTF8-prefix><second-line>
-	payload := " " + encoded
-	payload = strings.ReplaceAll(payload, " =?UTF-8?q?", "")
-	payload = strings.ReplaceAll(payload, "?=", "")
-
-	decoded, err := ioutil.ReadAll(quotedprintable.NewReader(strings.NewReader(payload)))
-	if err != nil {
-		// if err, abort decoding and return original subject
-		return encoded
-	}
-
-	return string(decoded)
-}
diff --git a/pkg/gitdiff/patch_identity.go b/pkg/gitdiff/patch_identity.go
deleted file mode 100644
index 018f80c..0000000
--- a/pkg/gitdiff/patch_identity.go
+++ /dev/null
@@ -1,166 +0,0 @@
-package gitdiff
-
-import (
-	"fmt"
-	"strings"
-)
-
-// PatchIdentity identifies a person who authored or committed a patch.
-type PatchIdentity struct {
-	Name  string
-	Email string
-}
-
-func (i PatchIdentity) String() string {
-	name := i.Name
-	if name == "" {
-		name = `""`
-	}
-	return fmt.Sprintf("%s <%s>", name, i.Email)
-}
-
-// ParsePatchIdentity parses a patch identity string. A patch identity contains
-// an email address and an optional name in [RFC 5322] format. This is either a
-// plain email adddress or a name followed by an address in angle brackets:
-//
-//	author@example.com
-//	Author Name <author@example.com>
-//
-// If the input is not one of these formats, ParsePatchIdentity applies a
-// heuristic to separate the name and email portions. If both the name and
-// email are missing or empty, ParsePatchIdentity returns an error. It
-// otherwise does not validate the result.
-//
-// [RFC 5322]: https://datatracker.ietf.org/doc/html/rfc5322
-func ParsePatchIdentity(s string) (PatchIdentity, error) {
-	s = normalizeSpace(s)
-	s = unquotePairs(s)
-
-	var name, email string
-	if at := strings.IndexByte(s, '@'); at >= 0 {
-		start, end := at, at
-		for start >= 0 && !isRFC5332Space(s[start]) && s[start] != '<' {
-			start--
-		}
-		for end < len(s) && !isRFC5332Space(s[end]) && s[end] != '>' {
-			end++
-		}
-		email = s[start+1 : end]
-
-		// Adjust the boundaries so that we drop angle brackets, but keep
-		// spaces when removing the email to form the name.
-		if start < 0 || s[start] != '<' {
-			start++
-		}
-		if end >= len(s) || s[end] != '>' {
-			end--
-		}
-		name = s[:start] + s[end+1:]
-	} else {
-		start, end := 0, 0
-		for i := 0; i < len(s); i++ {
-			if s[i] == '<' && start == 0 {
-				start = i + 1
-			}
-			if s[i] == '>' && start > 0 {
-				end = i
-				break
-			}
-		}
-		if start > 0 && end >= start {
-			email = strings.TrimSpace(s[start:end])
-			name = s[:start-1]
-		}
-	}
-
-	// After extracting the email, the name might contain extra whitespace
-	// again and may be surrounded by comment characters. The git source gives
-	// these examples of when this can happen:
-	//
-	//   "Name <email@domain>"
-	//   "email@domain (Name)"
-	//   "Name <email@domain> (Comment)"
-	//
-	name = normalizeSpace(name)
-	if strings.HasPrefix(name, "(") && strings.HasSuffix(name, ")") {
-		name = name[1 : len(name)-1]
-	}
-	name = strings.TrimSpace(name)
-
-	// If the name is empty or contains email-like characters, use the email
-	// instead (assuming one exists)
-	if name == "" || strings.ContainsAny(name, "@<>") {
-		name = email
-	}
-
-	if name == "" && email == "" {
-		return PatchIdentity{}, fmt.Errorf("invalid identity string %q", s)
-	}
-	return PatchIdentity{Name: name, Email: email}, nil
-}
-
-// unquotePairs process the RFC5322 tokens "quoted-string" and "comment" to
-// remove any "quoted-pairs" (backslash-espaced characters). It also removes
-// the quotes from any quoted strings, but leaves the comment delimiters.
-func unquotePairs(s string) string {
-	quote := false
-	comments := 0
-	escaped := false
-
-	var out strings.Builder
-	for i := 0; i < len(s); i++ {
-		if escaped {
-			escaped = false
-		} else {
-			switch s[i] {
-			case '\\':
-				// quoted-pair is only allowed in quoted-string/comment
-				if quote || comments > 0 {
-					escaped = true
-					continue // drop '\' character
-				}
-
-			case '"':
-				if comments == 0 {
-					quote = !quote
-					continue // drop '"' character
-				}
-
-			case '(':
-				if !quote {
-					comments++
-				}
-			case ')':
-				if comments > 0 {
-					comments--
-				}
-			}
-		}
-		out.WriteByte(s[i])
-	}
-	return out.String()
-}
-
-// normalizeSpace trims leading and trailing whitespace from s and converts
-// inner sequences of one or more whitespace characters to single spaces.
-func normalizeSpace(s string) string {
-	var sb strings.Builder
-	for i := 0; i < len(s); i++ {
-		c := s[i]
-		if !isRFC5332Space(c) {
-			if sb.Len() > 0 && isRFC5332Space(s[i-1]) {
-				sb.WriteByte(' ')
-			}
-			sb.WriteByte(c)
-		}
-	}
-	return sb.String()
-}
-
-func isRFC5332Space(c byte) bool {
-	switch c {
-	case '\t', '\n', '\r', ' ':
-		return true
-	}
-	return false
-}
diff --git a/pkg/gitdiff/text.go b/pkg/gitdiff/text.go
deleted file mode 100644
index ee30792..0000000
--- a/pkg/gitdiff/text.go
+++ /dev/null
@@ -1,192 +0,0 @@
-package gitdiff
-
-import (
-	"fmt"
-	"io"
-	"strconv"
-	"strings"
-)
-
-// ParseTextFragments parses text fragments until the next file header or the
-// end of the stream and attaches them to the given file. It returns the number
-// of fragments that were added.
-func (p *parser) ParseTextFragments(f *File) (n int, err error) {
-	for {
-		frag, err := p.ParseTextFragmentHeader()
-		if err != nil {
-			return n, err
-		}
-		if frag == nil {
-			return n, nil
-		}
-
-		if f.IsNew && frag.OldLines > 0 {
-			return n, p.Errorf(-1, "new file depends on old contents")
-		}
-		if f.IsDelete && frag.NewLines > 0 {
-			return n, p.Errorf(-1, "deleted file still has contents")
-		}
-
-		if err := p.ParseTextChunk(frag); err != nil {
-			return n, err
-		}
-
-		f.TextFragments = append(f.TextFragments, frag)
-		n++
-	}
-}
-
-func (p *parser) ParseTextFragmentHeader() (*TextFragment, error) {
-	const (
-		startMark = "@@ -"
-		endMark   = " @@"
-	)
-
-	if !strings.HasPrefix(p.Line(0), startMark) {
-		return nil, nil
-	}
-
-	parts := strings.SplitAfterN(p.Line(0), endMark, 2)
-	if len(parts) < 2 {
-		return nil, p.Errorf(0, "invalid fragment header")
-	}
-
-	f := &TextFragment{}
-	f.Comment = strings.TrimSpace(parts[1])
-
-	header := parts[0][len(startMark) : len(parts[0])-len(endMark)]
-	ranges := strings.Split(header, " +")
-	if len(ranges) != 2 {
-		return nil, p.Errorf(0, "invalid fragment header")
-	}
-
-	var err error
-	if f.OldPosition, f.OldLines, err = parseRange(ranges[0]); err != nil {
-		return nil, p.Errorf(0, "invalid fragment header: %v", err)
-	}
-	if f.NewPosition, f.NewLines, err = parseRange(ranges[1]); err != nil {
-		return nil, p.Errorf(0, "invalid fragment header: %v", err)
-	}
-
-	if err := p.Next(); err != nil && err != io.EOF {
-		return nil, err
-	}
-	return f, nil
-}
-
-func (p *parser) ParseTextChunk(frag *TextFragment) error {
-	if p.Line(0) == "" {
-		return p.Errorf(0, "no content following fragment header")
-	}
-
-	oldLines, newLines := frag.OldLines, frag.NewLines
-	for oldLines > 0 || newLines > 0 {
-		line := p.Line(0)
-		op, data := line[0], line[1:]
-
-		switch op {
-		case '\n':
-			data = "\n"
-			fallthrough // newer GNU diff versions create empty context lines
-		case ' ':
-			oldLines--
-			newLines--
-			if frag.LinesAdded == 0 && frag.LinesDeleted == 0 {
-				frag.LeadingContext++
-			} else {
-				frag.TrailingContext++
-			}
-			frag.Lines = append(frag.Lines, Line{OpContext, data})
-		case '-':
-			oldLines--
-			frag.LinesDeleted++
-			frag.TrailingContext = 0
-			frag.Lines = append(frag.Lines, Line{OpDelete, data})
-		case '+':
-			newLines--
-			frag.LinesAdded++
-			frag.TrailingContext = 0
-			frag.Lines = append(frag.Lines, Line{OpAdd, data})
-		case '\\':
-			// this may appear in middle of fragment if it's for a deleted line
-			if isNoNewlineMarker(line) {
-				removeLastNewline(frag)
-				break
-			}
-			fallthrough
-		default:
-			// TODO(bkeyes): if this is because we hit the next header, it
-			// would be helpful to return the miscounts line error. We could
-			// either test for the common headers ("@@ -", "diff --git") or
-			// assume any invalid op ends the fragment; git returns the same
-			// generic error in all cases so either is compatible
-			return p.Errorf(0, "invalid line operation: %q", op)
-		}
-
-		if err := p.Next(); err != nil {
-			if err == io.EOF {
-				break
-			}
-			return err
-		}
-	}
-
-	if oldLines != 0 || newLines != 0 {
-		hdr := max(frag.OldLines-oldLines, frag.NewLines-newLines) + 1
-		return p.Errorf(-hdr, "fragment header miscounts lines: %+d old, %+d new", -oldLines, -newLines)
-	}
-	if frag.LinesAdded == 0 && frag.LinesDeleted == 0 {
-		return p.Errorf(0, "fragment contains no changes")
-	}
-
-	// check for a final "no newline" marker since it is not included in the
-	// counters used to stop the loop above
-	if isNoNewlineMarker(p.Line(0)) {
-		removeLastNewline(frag)
-		if err := p.Next(); err != nil && err != io.EOF {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func isNoNewlineMarker(s string) bool {
-	// test for "\ No newline at end of file" by prefix because the text
-	// changes by locale (git claims all versions are at least 12 chars)
-	return len(s) >= 12 && s[:2] == "\\ "
-}
-
-func removeLastNewline(frag *TextFragment) {
-	if len(frag.Lines) > 0 {
-		last := &frag.Lines[len(frag.Lines)-1]
-		last.Line = strings.TrimSuffix(last.Line, "\n")
-	}
-}
-
-func parseRange(s string) (start int64, end int64, err error) {
-	parts := strings.SplitN(s, ",", 2)
-
-	if start, err = strconv.ParseInt(parts[0], 10, 64); err != nil {
-		nerr := err.(*strconv.NumError)
-		return 0, 0, fmt.Errorf("bad start of range: %s: %v", parts[0], nerr.Err)
-	}
-
-	if len(parts) > 1 {
-		if end, err = strconv.ParseInt(parts[1], 10, 64); err != nil {
-			nerr := err.(*strconv.NumError)
-			return 0, 0, fmt.Errorf("bad end of range: %s: %v", parts[1], nerr.Err)
-		}
-	} else {
-		end = 1
-	}
-
-	return
-}
-
-func max(a, b int64) int64 {
-	if a > b {
-		return a
-	}
-	return b
-}
diff --git a/pkg/links/links.go b/pkg/links/links.go
deleted file mode 100644
index 0795dfc..0000000
--- a/pkg/links/links.go
+++ /dev/null
@@ -1,179 +0,0 @@
-package links
-
-import (
-	"bytes"
-	"net/url"
-	"path"
-	"strings"
-
-	"golang.org/x/net/html"
-
-	"mokhan.ca/antonmedv/gitmal/pkg/git"
-)
-
-type Set map[string]struct{}
-
-func BuildDirSet(files []git.Blob) Set {
-	dirs := make(Set)
-	for _, f := range files {
-		dir := path.Dir(f.Path)
-		for dir != "." && dir != "/" {
-			if _, ok := dirs[dir]; ok {
-				break
-			}
-			dirs[dir] = struct{}{}
-			if i := strings.LastIndex(dir, "/"); i != -1 {
-				dir = dir[:i]
-			} else {
-				break
-			}
-		}
-	}
-	return dirs
-}
-
-func BuildFileSet(files []git.Blob) Set {
-	filesSet := make(Set)
-	for _, f := range files {
-		filesSet[f.Path] = struct{}{}
-	}
-	return filesSet
-}
-
-func Resolve(content, currentPath, rootHref, ref string, dirs, files Set) string {
-	doc, err := html.Parse(strings.NewReader(content))
-	if err != nil {
-		return content
-	}
-
-	baseDir := path.Dir(currentPath)
-
-	var walk func(*html.Node)
-	walk = func(n *html.Node) {
-		if n.Type == html.ElementNode {
-			switch n.Data {
-			case "a":
-				for i, attr := range n.Attr {
-					if attr.Key == "href" {
-						newHref := transformHref(attr.Val, baseDir, rootHref, ref, files, dirs)
-						n.Attr[i].Val = newHref
-						break
-					}
-				}
-			case "img":
-				for i, attr := range n.Attr {
-					if attr.Key == "src" {
-						newSrc := transformImgSrc(attr.Val, baseDir, rootHref, ref)
-						n.Attr[i].Val = newSrc
-						break
-					}
-				}
-			}
-		}
-
-		for c := n.FirstChild; c != nil; c = c.NextSibling {
-			walk(c)
-		}
-	}
-	walk(doc)
-
-	var buf bytes.Buffer
-	if err := html.Render(&buf, doc); err != nil {
-		return content
-	}
-
-	return buf.String()
-}
-
-func transformHref(href, baseDir, rootHref, ref string, files, dirs Set) string {
-	if href == "" {
-		return href
-	}
-	if strings.HasPrefix(href, "#") {
-		return href
-	}
-
-	u, err := url.Parse(href)
-	if err != nil {
-		return href
-	}
-
-	// Absolute URLs are left untouched
-	if u.IsAbs() {
-		return href
-	}
-
-	// Skip mailto:, javascript:, data: etc. (url.Parse sets Scheme)
-	if u.Scheme != "" {
-		return href
-	}
-
-	// Resolve against the directory of the current file
-	relPath := u.Path
-	if relPath == "" {
-		return href
-	}
-
-	var repoPath string
-
-	if strings.HasPrefix(relPath, "/") {
-		// Root-relative repo path
-		relPath = strings.TrimPrefix(relPath, "/")
-		repoPath = path.Clean(relPath)
-	} else {
-		// Relative to current file directory
-		repoPath = path.Clean(path.Join(baseDir, relPath))
-	}
-
-	// Decide if this is a file or a directory in the repo
-	var newPath string
-
-	// 1) Exact file match
-	if _, ok := files[repoPath]; ok {
-		newPath = repoPath + ".html"
-	} else if _, ok := files[repoPath+".md"]; ok {
-		// 2) Maybe the link omitted ".md" but the repo has it
-		newPath = repoPath + ".md.html"
-	} else if _, ok := dirs[repoPath]; ok {
-		// 3) Directory: add /index.html
-		newPath = path.Join(repoPath, "index.html")
-	} else {
-		// Unknown target, leave as-is
-		return href
-	}
-
-	// Link from the root href
-	newPath = path.Join(rootHref, "blob", ref, newPath)
-
-	// Preserve any query/fragment if they existed
-	u.Path = newPath
-	return u.String()
-}
-
-func transformImgSrc(src, baseDir, rootHref, ref string) string {
-	u, err := url.Parse(src)
-	if err != nil {
-		return src
-	}
-
-	if u.IsAbs() {
-		return src
-	}
-
-	relPath := u.Path
-
-	var repoPath string
-	if strings.HasPrefix(relPath, "/") {
-		// Root-relative: drop leading slash
-		repoPath = strings.TrimPrefix(relPath, "/")
-	} else {
-		// Resolve against current file directory
-		repoPath = path.Clean(path.Join(baseDir, relPath))
-	}
-
-	final := path.Join(rootHref, "raw", ref, repoPath)
-
-	// Preserve any query/fragment if they existed
-	u.Path = final
-	return u.String()
-}
diff --git a/pkg/progress_bar/progress_bar.go b/pkg/progress_bar/progress_bar.go
deleted file mode 100644
index 8f39ec5..0000000
--- a/pkg/progress_bar/progress_bar.go
+++ /dev/null
@@ -1,84 +0,0 @@
-package progress_bar
-
-import (
-	"fmt"
-	"os"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-)
-
-type ProgressBar struct {
-	label   string
-	total   int64
-	current int64
-	stop    chan struct{}
-	wg      sync.WaitGroup
-}
-
-func NewProgressBar(label string, total int) *ProgressBar {
-	p := &ProgressBar{label: label, total: int64(total), stop: make(chan struct{})}
-	p.wg.Add(1)
-	go func() {
-		defer p.wg.Done()
-		ticker := time.NewTicker(100 * time.Millisecond)
-		defer ticker.Stop()
-		// initial draw
-		p.draw(atomic.LoadInt64(&p.current))
-		for {
-			select {
-			case <-p.stop:
-				return
-			case <-ticker.C:
-				cur := atomic.LoadInt64(&p.current)
-				if cur > p.total {
-					cur = p.total
-				}
-				p.draw(cur)
-			}
-		}
-	}()
-	return p
-}
-
-func (p *ProgressBar) Inc() {
-	for {
-		cur := atomic.LoadInt64(&p.current)
-		if cur >= p.total {
-			return
-		}
-		if atomic.CompareAndSwapInt64(&p.current, cur, cur+1) {
-			return
-		}
-		// retry on race
-	}
-}
-
-func (p *ProgressBar) Done() {
-	atomic.StoreInt64(&p.current, p.total)
-	close(p.stop)
-	p.wg.Wait()
-	p.draw(p.total)
-	_, _ = fmt.Fprintln(os.Stderr)
-}
-
-func (p *ProgressBar) draw(current int64) {
-	if p.total <= 0 {
-		return
-	}
-	percent := 0
-	if p.total > 0 {
-		percent = int(current * 100 / p.total)
-	}
-	barLen := 24
-	filled := 0
-	if p.total > 0 {
-		filled = int(current * int64(barLen) / p.total)
-	}
-	if filled > barLen {
-		filled = barLen
-	}
-	bar := strings.Repeat("#", filled) + strings.Repeat(" ", barLen-filled)
-	_, _ = fmt.Fprintf(os.Stderr, "\r[%s] %4d/%-4d (%3d%%) %s", bar, current, p.total, percent, p.label)
-}
diff --git a/pkg/templates/blob.gohtml b/pkg/templates/blob.gohtml
deleted file mode 100644
index b98e2b3..0000000
--- a/pkg/templates/blob.gohtml
+++ /dev/null
@@ -1,72 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.BlobParams */ -}}
-{{ define "head" }}
-    <style>
-        {{ .CSS }}
-
-        [id] {
-          scroll-margin-top: var(--header-height);
-        }
-
-        pre {
-          border: 1px solid var(--c-border);
-          border-top: none;
-          border-bottom-left-radius: var(--border-radius);
-          border-bottom-right-radius: var(--border-radius);
-        }
-
-        pre {
-          margin: 0;
-          padding: 8px 16px;
-          overflow-x: auto;
-          white-space: pre;
-          word-spacing: normal;
-          word-break: normal;
-          word-wrap: normal;
-          tab-size: 4;
-          font-family: var(--font-family-mono), monospace;
-        }
-
-        pre > code {
-          display: block;
-          padding: 0 16px;
-          width: fit-content;
-          min-width: 100%;
-          line-height: var(--code-line-height);
-          font-size: var(--code-font-size);
-        }
-
-        .border {
-          border: 1px solid var(--c-border);
-          border-top: none;
-          border-bottom-left-radius: 6px;
-          border-bottom-right-radius: 6px;
-        }
-
-        .binary-file {
-          padding: 8px 16px;
-          font-style: italic;
-        }
-
-        .image {
-          padding: 8px 16px;
-          text-align: center;
-        }
-
-        .image img {
-          max-width: 100%;
-          height: auto;
-        }
-    </style>
-{{ end }}
-
-{{ define "body" }}
-    {{ template "header" . }}
-    {{ if .IsImage }}
-        <div class="image border">{{.Content}}</div>
-    {{ else if .IsBinary}}
-        <div class="binary-file border">Binary file</div>
-    {{ else }}
-        {{ .Content }}
-    {{ end }}
-{{ end }}
-
diff --git a/pkg/templates/branches.gohtml b/pkg/templates/branches.gohtml
deleted file mode 100644
index 743461d..0000000
--- a/pkg/templates/branches.gohtml
+++ /dev/null
@@ -1,58 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.BranchesParams*/ -}}
-{{ define "head" }}
-    <style>
-      .branches {
-        border: 1px solid var(--c-border);
-        border-radius: var(--border-radius);
-        overflow: hidden;
-      }
-
-      .branch-row {
-        display: flex;
-        align-items: center;
-        gap: 12px;
-        height: 44px;
-        padding-inline: 16px;
-        border-bottom: 1px solid var(--c-border);
-        background-color: var(--c-bg-elv);
-      }
-
-      .branch-row:last-child {
-        border-bottom: none;
-      }
-
-      .branch-row a {
-        color: var(--c-text-1);
-      }
-
-      .branch-row a:hover {
-        color: var(--c-brand-2);
-        text-decoration: none;
-      }
-
-      .badge {
-        font-size: 12px;
-        color: var(--c-text-2);
-        border: 1px solid var(--c-border);
-        padding: 2px 6px;
-        border-radius: 999px;
-      }
-    </style>
-{{ end }}
-
-{{ define "body" }}
-    <h1>Branches</h1>
-    <div class="branches">
-        {{ if .Branches }}
-            {{ range .Branches }}
-                <div class="branch-row">
-                    <a href="{{ .Href }}">{{ .Name }}</a>
-                    {{ if .IsDefault }}<span class="badge">default</span>{{ end }}
-                    <a href="{{ .CommitsHref }}" style="margin-left:auto; font-size:13px; color: var(--c-text-2)">commits →</a>
-                </div>
-            {{ end }}
-        {{ else }}
-            <div class="branch-row">(no branches)</div>
-        {{ end }}
-    </div>
-{{ end }}
diff --git a/pkg/templates/commit.gohtml b/pkg/templates/commit.gohtml
deleted file mode 100644
index 3176f97..0000000
--- a/pkg/templates/commit.gohtml
+++ /dev/null
@@ -1,314 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.CommitParams*/ -}}
-{{ define "head" }}
-    <style>
-      h1 code {
-        border-radius: var(--border-radius);
-        background: var(--c-bg-alt);
-        padding: 4px 8px;
-        font-family: var(--font-family-mono), monospace;
-        font-weight: 500;
-      }
-
-      .commit {
-        display: flex;
-        flex-direction: column;
-        gap: 16px;
-        margin-bottom: 16px;
-      }
-
-      .commit-info {
-        display: flex;
-        flex-direction: row;
-        gap: 8px;
-        align-items: flex-end;
-      }
-
-      .commit-author {
-        color: var(--c-text-1);
-        font-weight: 600;
-        min-width: 0;
-        overflow-wrap: break-word;
-      }
-
-      .commit-date {
-        color: var(--c-text-2);
-        font-size: 12px;
-        font-family: var(--font-family-mono), monospace;
-      }
-
-      .commit-message {
-        border: 1px solid var(--c-border);
-        border-radius: var(--border-radius);
-        padding: 16px;
-      }
-
-      .ref-badges {
-        display: inline-flex;
-        gap: 6px;
-        margin-left: 8px;
-      }
-
-      .badge {
-        font-size: 12px;
-        color: var(--c-text-2);
-        border: 1px solid var(--c-border);
-        padding: 2px 6px;
-        border-radius: 999px;
-        white-space: nowrap;
-      }
-
-      .commit-subject {
-        font-size: 16px;
-        font-weight: 600;
-        line-height: 1.3;
-        hyphens: auto;
-      }
-
-      .commit-body {
-        margin-top: 16px;
-        white-space: pre-wrap;
-        line-height: 1.5;
-        hyphens: auto;
-      }
-
-      .commit-subinfo {
-        display: flex;
-        flex-direction: row;
-        gap: 16px;
-        justify-content: space-between;
-      }
-
-      .commit-layout {
-        display: grid;
-        grid-template-columns: 1fr;
-        gap: 16px;
-      }
-
-      @media (min-width: 960px) {
-        .commit-layout {
-          grid-template-columns: 300px 1fr;
-          align-items: start;
-        }
-
-        .files-tree {
-          position: sticky;
-          top: 16px;
-        }
-
-        .files-tree-content {
-          max-height: calc(100vh - var(--header-height) - 40px);
-          overflow: auto;
-        }
-      }
-
-      .files-tree {
-        border: 1px solid var(--c-border);
-        border-radius: var(--border-radius);
-      }
-
-      .files-tree-header {
-        display: flex;
-        flex-direction: row;
-        align-items: center;
-        padding-inline: 16px;
-        height: var(--header-height);
-        border-bottom: 1px solid var(--c-border);
-        border-top-left-radius: var(--border-radius);
-        border-top-right-radius: var(--border-radius);
-        background: var(--c-bg-alt);
-        font-size: 14px;
-        font-weight: 600;
-      }
-
-      .files-tree-content {
-        display: block;
-        padding-block: 6px;
-      }
-
-      .tree .children {
-        margin-left: 16px;
-        border-left: 1px dashed var(--c-border);
-      }
-
-      .tree .node {
-        display: flex;
-        align-items: center;
-        gap: 8px;
-        padding: 10px 16px;
-      }
-
-      .tree .file-name {
-        flex: 1;
-        font-weight: 500;
-        color: var(--c-text-1);
-        cursor: pointer;
-      }
-
-      .tree .file-name:hover {
-        color: var(--c-brand-2);
-        text-decoration: underline;
-      }
-
-      .tree .dir {
-        color: var(--c-dir);
-      }
-
-      .tree .file-added {
-        color: var(--c-green);
-      }
-
-      .tree .file-deleted {
-        color: var(--c-red);
-      }
-
-      .tree .file-renamed {
-        color: var(--c-yellow);
-      }
-
-      /* Per-file sections */
-
-      .files {
-        min-width: 0;
-      }
-
-      .file-section + .file-section {
-        margin-top: 16px;
-      }
-
-      pre {
-        border: 1px solid var(--c-border);
-        border-top: none;
-        border-bottom-left-radius: var(--border-radius);
-        border-bottom-right-radius: var(--border-radius);
-      }
-
-      pre {
-        margin: 0;
-        padding: 8px 16px;
-        overflow-x: auto;
-        white-space: pre;
-        word-spacing: normal;
-        word-break: normal;
-        word-wrap: normal;
-        tab-size: 4;
-        font-family: var(--font-family-mono), monospace;
-      }
-
-      pre > code {
-        display: block;
-        padding: 0 16px;
-        width: fit-content;
-        min-width: 100%;
-        line-height: var(--code-line-height);
-        font-size: var(--code-font-size);
-      }
-
-      .binary-file {
-        padding: 8px 16px;
-        font-style: italic;
-      }
-
-      .border {
-        border: 1px solid var(--c-border);
-        border-top: none;
-        border-bottom-left-radius: 6px;
-        border-bottom-right-radius: 6px;
-      }
-
-      {{ .DiffCSS }}
-    </style>
-{{ end }}
-
-{{ define "body" }}
-    <h1>Commit <code>{{ .Commit.ShortHash }}</code></h1>
-
-    <div class="commit">
-        <div class="commit-info">
-            <div class="commit-author">{{ .Commit.Author }} &lt;{{ .Commit.Email }}&gt;</div>
-            <div class="commit-date">{{ .Commit.Date | FormatDate }}</div>
-        </div>
-        <div class="commit-message">
-            <div class="commit-subject">
-                {{ .Commit.Subject }}
-                {{ if .Commit.RefNames }}
-                    <span class="ref-badges">
-                        {{ range .Commit.RefNames }}
-                            {{ if or (eq .Kind "Branch") (eq .Kind "Tag") }}
-                                <span class="badge">{{ if eq .Kind "Tag" }}tag: {{ end }}{{ .Name }}</span>
-                            {{ end }}
-                        {{ end }}
-                    </span>
-                {{ end }}
-            </div>
-            {{ if .Commit.Body }}
-                <div class="commit-body">{{ .Commit.Body }}</div>
-            {{ end }}
-        </div>
-        <div class="commit-subinfo">
-            <div class="commit-branch">
-                {{ if .Commit.Branch }}
-                    <a href="../commits/{{ .Commit.Branch.DirName }}/index.html" class="badge">{{ .Commit.Branch }}</a>
-                {{ end }}
-            </div>
-            {{ if .Commit.Parents }}
-                <div class="commit-parents">
-                    {{ if eq (len .Commit.Parents)  1 }}
-                        1 parent
-                    {{ else }}
-                        {{ .Commit.Parents | len }} parents
-                    {{ end }}
-                    {{ range $i, $p := .Commit.Parents }}
-                        {{ if gt $i 0 }}, {{ end }}
-                        <a href="{{ $p }}.html"><code>{{ $p | ShortHash }}</code></a>
-                    {{ end }}
-                </div>
-            {{ end }}
-        </div>
-    </div>
-
-    <div class="commit-layout">
-        <div class="files-tree">
-            <div class="files-tree-header">Changed files ({{ len .FileViews }})</div>
-            <div class="files-tree-content">
-                {{ if .FileTree }}
-                    <div class="tree">
-                        {{ template "file_tree" (FileTreeParams .FileTree) }}
-                    </div>
-                {{ else }}
-                    <div style="color: var(--c-text-3)">(no files)</div>
-                {{ end }}
-            </div>
-        </div>
-
-        <div class="files">
-            {{ range .FileViews }}
-                <section id="{{ .Path }}" class="file-section">
-                    <div class="header-container">
-                        <header class="file-header">
-                            {{ if .IsRename }}
-                                <div class="path">{{ .OldName }} → {{ .NewName }}</div>
-                            {{ else }}
-                                <div class="path">{{ .Path }}</div>
-                            {{ end }}
-                            <button class="goto-top" onclick="window.scrollTo({top: 0, behavior: 'smooth'})">
-                                <svg aria-hidden="true" focusable="false" width="16" height="16">
-                                    <use xlink:href="#arrow-top"></use>
-                                </svg>
-                                Top
-                            </button>
-                        </header>
-                    </div>
-                    {{ if .IsBinary }}
-                        <div class="binary-file border">Binary file</div>
-                    {{ else if (and .IsRename (not .HasChanges)) }}
-                        <div class="binary-file border">File renamed without changes</div>
-                    {{ else }}
-                        <div class="file-diff">
-                            {{ .HTML }}
-                        </div>
-                    {{ end }}
-                </section>
-            {{ end }}
-        </div>
-    </div>
-{{ end }}
diff --git a/pkg/templates/commits_list.gohtml b/pkg/templates/commits_list.gohtml
deleted file mode 100644
index 76dd43c..0000000
--- a/pkg/templates/commits_list.gohtml
+++ /dev/null
@@ -1,203 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.CommitsListParams*/ -}}
-{{ define "head" }}
-    <style>
-      .commits {
-        border: 1px solid var(--c-border);
-        border-top: none;
-        border-bottom-left-radius: var(--border-radius);
-        border-bottom-right-radius: var(--border-radius);
-        overflow-x: auto;
-      }
-
-      .row {
-        display: flex;
-        height: 40px;
-        border-bottom: 1px solid var(--c-border);
-        padding-inline: 16px;
-        gap: 16px;
-      }
-
-      .row:last-child {
-        border-bottom: none;
-      }
-
-      .row:hover {
-        background-color: var(--c-bg-alt);
-      }
-
-      .cell {
-        display: flex;
-        gap: 8px;
-        align-items: center;
-      }
-
-      .hash a {
-        font-family: var(--font-family-mono), monospace;
-        color: var(--c-text-2);
-      }
-
-      .commit-title {
-        flex: 1;
-      }
-
-      .commit-title a {
-        color: var(--c-text-1);
-        line-height: 1.5;
-      }
-
-      .commit-title a:hover {
-        color: var(--c-brand-2);
-      }
-
-      .ref-badges {
-        display: inline-flex;
-        gap: 6px;
-        margin-left: 8px;
-      }
-
-      .badge {
-        font-size: 12px;
-        color: var(--c-text-2);
-        border: 1px solid var(--c-border);
-        padding: 2px 6px;
-        border-radius: 999px;
-        white-space: nowrap;
-      }
-
-      .date {
-        font-family: var(--font-family-mono), monospace;
-        font-size: 12px;
-        color: var(--c-text-2);
-      }
-
-      .pagination {
-        display: flex;
-        gap: 8px;
-        align-items: center;
-        justify-content: center;
-        margin-top: 12px;
-        padding: 8px 0;
-        color: var(--c-text-2);
-      }
-
-      .pagination a,
-      .pagination span.btn {
-        display: inline-flex;
-        align-items: center;
-        gap: 6px;
-        padding: 6px 10px;
-        border: 1px solid var(--c-border);
-        border-radius: 6px;
-        background: var(--c-bg-elv);
-        color: var(--c-text-1);
-        text-decoration: none;
-        font-size: 13px;
-      }
-
-      .pagination a:hover {
-        color: var(--c-brand-2);
-        border-color: var(--c-brand-2);
-      }
-
-      .pagination .disabled {
-        opacity: 0.5;
-        pointer-events: none;
-      }
-
-      .pagination .page-indicator {
-        margin: 0 4px;
-        font-size: 13px;
-        color: var(--c-text-2);
-      }
-
-      /* Mobile optimizations */
-      @media (max-width: 767px) {
-        .row {
-          height: auto;
-          padding: 10px 12px;
-          gap: 12px;
-          flex-wrap: wrap;
-          align-items: flex-start;
-        }
-
-        .commit-title {
-          flex-basis: 100%;
-          order: 1;
-        }
-
-        .author, .date, .hash {
-          font-size: 12px;
-        }
-
-        .author {
-          color: var(--c-text-2);
-          order: 2;
-        }
-
-        .date {
-          order: 2;
-        }
-
-        .hash {
-          margin-left: auto;
-          order: 3;
-        }
-      }
-    </style>
-{{ end }}
-
-{{ define "body" }}
-    {{ template "header" . }}
-    <div class="commits">
-        {{ range .Commits }}
-            <div class="row">
-                <div class="cell hash">
-                    <a href="{{ .Href }}">{{ .ShortHash }}</a>
-                </div>
-                <div class="cell commit-title">
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-                        <span class="badge">{{ if eq .Kind "Tag" }}tag: {{ end }}{{ .Name }}</span>
-                      {{ end }}
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-                  {{ end }}
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-                <div class="cell date">{{ .Date | FormatDate }}</div>
-            </div>
-        {{ else}}
-            <div class="row">(no commits)</div>
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-        {{ else }}
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-
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diff --git a/pkg/templates/css/markdown_dark.css b/pkg/templates/css/markdown_dark.css
deleted file mode 100644
index 0d5d47d..0000000
--- a/pkg/templates/css/markdown_dark.css
+++ /dev/null
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diff --git a/pkg/templates/css/markdown_light.css b/pkg/templates/css/markdown_light.css
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-  margin-top: 0 !important;
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-.markdown-body .highlight pre:has(+.zeroclipboard-container) {
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diff --git a/pkg/templates/file_tree.gohtml b/pkg/templates/file_tree.gohtml
deleted file mode 100644
index 21fc07c..0000000
--- a/pkg/templates/file_tree.gohtml
+++ /dev/null
@@ -1,43 +0,0 @@
-{{- /*gotype:mokhan.ca/antonmedv/gitmal/pkg/templates.FileTreeParams*/ -}}
-{{ define "file_tree" }}
-    {{ range .Nodes }}
-        {{ if .IsDir }}
-            <details open>
-                <summary class="node">
-                    <svg aria-hidden="true" focusable="false" width="16" height="16" class="dir">
-                        <use xlink:href="#dir"></use>
-                    </svg>
-                    <span class="file-name">{{ .Name }}</span>
-                </summary>
-                <div class="children">
-                    {{ template "file_tree" (FileTreeParams .Children) }}
-                </div>
-            </details>
-        {{ else }}
-            <div class="node">
-                <div class="icon" aria-hidden="true">
-                    {{ if .IsNew }}
-                        <svg aria-hidden="true" focusable="false" width="16" height="16" class="file-added">
-                            <use xlink:href="#file-added"></use>
-                        </svg>
-                    {{ else if .IsDelete }}
-                        <svg aria-hidden="true" focusable="false" width="16" height="16" class="file-deleted">
-                            <use xlink:href="#file-deleted"></use>
-                        </svg>
-                    {{ else if .IsRename }}
-                        <svg aria-hidden="true" focusable="false" width="16" height="16" class="file-renamed">
-                            <use xlink:href="#file-renamed"></use>
-                        </svg>
-                    {{ else }}
-                        <svg aria-hidden="true" focusable="false" width="16" height="16">
-                            <use xlink:href="#file-modified"></use>
-                        </svg>
-                    {{ end }}
-                </div>
-                <a href="#{{.Path}}" class="file-name">
-                    {{ .Path | BaseName }}
-                </a>
-            </div>
-        {{ end }}
-    {{ end }}
-{{ end }}
diff --git a/pkg/templates/header.gohtml b/pkg/templates/header.gohtml
deleted file mode 100644
index 4b5af05..0000000
--- a/pkg/templates/header.gohtml
+++ /dev/null
@@ -1,35 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.HeaderParams*/ -}}
-{{ define "header" }}
-    <div class="header-container">
-        <header>
-            {{ if .Ref }}
-                <div class="header-ref" aria-label="Ref">{{ .Ref }}</div>
-            {{ end }}
-            {{ if .Header }}
-                <h1 class="title">{{ .Header }}</h1>
-            {{ else if .Breadcrumbs }}
-                <nav class="breadcrumbs" aria-label="Breadcrumbs">
-                    {{ range $i, $b := .Breadcrumbs }}
-                        {{ if gt $i 0 }}
-                            <div>/</div>
-                        {{ end }}
-                        {{ if $b.Href }}
-                            <a href="{{$b.Href}}">{{$b.Name}}</a>
-                        {{ else }}
-                            <h1>{{$b.Name}}</h1>
-                            {{ if $b.IsDir}}
-                                <div>/</div>
-                            {{ end}}
-                        {{ end }}
-                    {{ end }}
-                </nav>
-            {{ end }}
-            <button class="goto-top" onclick="window.scrollTo({top: 0, behavior: 'smooth'})">
-                <svg aria-hidden="true" focusable="false" width="16" height="16">
-                    <use xlink:href="#arrow-top"></use>
-                </svg>
-                Top
-            </button>
-        </header>
-    </div>
-{{ end }}
diff --git a/pkg/templates/layout.gohtml b/pkg/templates/layout.gohtml
deleted file mode 100644
index 9438396..0000000
--- a/pkg/templates/layout.gohtml
+++ /dev/null
@@ -1,318 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.LayoutParams*/ -}}
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1">
-    <title>{{ .Title }}</title>
-    <style>
-        {{ if .Dark }}
-        :root {
-          --c-indigo-1: #a8b1ff;
-          --c-indigo-2: #5c73e7;
-          --c-indigo-3: #3e63dd;
-          --c-green: #57ab5a;
-          --c-red: #e5534b;
-          --c-yellow: #c69026;
-          --c-dir: #9198a1;
-          --c-gray-soft: rgba(101, 117, 133, .16);
-          --c-bg: #1b1b1f;
-          --c-bg-alt: #161618;
-          --c-bg-elv: #202127;
-          --c-text-1: rgba(255, 255, 245, .86);
-          --c-text-2: rgba(235, 235, 245, .6);
-          --c-text-3: rgba(235, 235, 245, .38);
-          --c-border: #3c3f44;
-          --c-divider: #2e2e32;
-        }
-
-        {{ else }}
-        :root {
-          --c-indigo-1: #3451b2;
-          --c-indigo-2: #3a5ccc;
-          --c-indigo-3: #5672cd;
-          --c-green: #1a7f37;
-          --c-red: #c53030;
-          --c-yellow: #9a6700;
-          --c-dir: #54aeff;
-          --c-gray-soft: rgba(142, 150, 170, .14);
-          --c-bg: #ffffff;
-          --c-bg-alt: #f6f6f7;
-          --c-bg-elv: #ffffff;
-          --c-text-1: rgba(60, 60, 67);
-          --c-text-2: rgba(60, 60, 67, .78);
-          --c-text-3: rgba(60, 60, 67, .56);
-          --c-border: #c2c2c4;
-          --c-divider: #e2e2e3;
-        }
-
-        {{ end }}
-
-        :root {
-          --c-brand-1: var(--c-indigo-1);
-          --c-brand-2: var(--c-indigo-2);
-          --c-brand-3: var(--c-indigo-3);
-          --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
-          --font-family-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
-          --code-line-height: 20px;
-          --code-font-size: 12px;
-          --code-color: var(--c-brand-1);
-          --code-bg: var(--c-gray-soft);
-          --code-block-bg: var(--c-bg-alt);
-          --code-block-color: var(--c-text-1);
-          --header-height: 46px;
-          --border-radius: 6px;
-          --max-content-width: 1470px;
-        }
-
-        * {
-          box-sizing: border-box;
-        }
-
-        body {
-          margin: 0;
-          padding: 0;
-          font-family: var(--font-family), sans-serif;
-          font-size: 14px;
-          line-height: 1;
-          color: var(--c-text-1);
-          background-color: var(--c-bg);
-          text-rendering: optimizeLegibility;
-          -webkit-font-smoothing: antialiased;
-          -moz-osx-font-smoothing: grayscale;
-          -moz-text-size-adjust: none;
-          -webkit-text-size-adjust: none;
-          text-size-adjust: none;
-          min-height: 100vh;
-          display: flex;
-          flex-direction: column;
-        }
-
-        .nowrap {
-          white-space: nowrap;
-        }
-
-        h1 {
-          margin-inline: 0;
-          margin-block: 16px;
-          font-size: 20px;
-          font-weight: 600;
-        }
-
-        a {
-          color: var(--c-brand-1);
-          font-weight: 500;
-          text-decoration: underline;
-          text-underline-offset: 2px;
-          text-decoration: inherit;
-          touch-action: manipulation;
-        }
-
-        a:hover {
-          color: var(--c-brand-2);
-          text-decoration: underline;
-        }
-
-        .menu {
-          background-color: var(--c-bg-alt);
-          border-bottom: 1px solid var(--c-divider);
-          overflow-x: auto;
-        }
-
-        .menu-content {
-          display: flex;
-          flex-direction: row;
-          align-items: center;
-          gap: 16px;
-          padding-inline: 16px;
-          max-width: var(--max-content-width);
-          margin-inline: auto;
-        }
-
-        .menu-item {
-          display: flex;
-          align-items: center;
-          border-bottom: 2px solid transparent;
-          height: 56px;
-          padding-inline: 8px;
-        }
-
-        .menu-item a {
-          display: flex;
-          flex-direction: row;
-          gap: 8px;
-          align-items: center;
-          color: var(--c-text-1);
-          padding: 8px 10px;
-          border-radius: 4px;
-        }
-
-        .menu-item a:hover {
-          background-color: var(--c-bg-elv);
-          text-decoration: none;
-        }
-
-        .menu-item.selected {
-          border-bottom-color: var(--c-brand-1);
-        }
-
-        .project-name {
-          font-weight: 600;
-          font-size: 16px;
-          margin-inline: 16px;
-          color: var(--c-text-1);
-          text-decoration: none;
-        }
-
-        main {
-          flex-grow: 1;
-          width: 100%;
-          max-width: var(--max-content-width);
-          margin: 16px auto;
-        }
-
-        .main-content {
-          padding-inline: 16px;
-        }
-
-        footer {
-          padding: 12px 16px;
-          background-color: var(--c-bg-alt);
-          border-top: 1px solid var(--c-divider);
-          color: var(--c-text-3);
-          font-size: 12px;
-          text-align: center;
-        }
-
-        .header-container {
-          container-type: scroll-state;
-          position: sticky;
-          top: 0;
-        }
-
-        .header-container {
-          @container scroll-state(stuck: top) {
-            header {
-              border-top: none;
-              border-top-left-radius: 0;
-              border-top-right-radius: 0;
-            }
-
-            .goto-top {
-              display: flex;
-            }
-          }
-        }
-
-        header {
-          display: flex;
-          flex-direction: row;
-          align-items: center;
-          min-height: var(--header-height);
-          padding-inline: 16px;
-          background: var(--c-bg-alt);
-          border: 1px solid var(--c-border);
-          border-top-left-radius: var(--border-radius);
-          border-top-right-radius: var(--border-radius);
-        }
-
-        header h1 {
-          word-break: break-all;
-          font-weight: 600;
-          font-size: 16px;
-          margin: 0;
-          padding: 0;
-        }
-
-        .header-ref {
-          color: var(--c-text-2);
-          border: 1px solid var(--c-border);
-          border-radius: 6px;
-          padding: 6px 10px;
-          margin-right: 10px;
-          margin-left: -6px;
-        }
-
-        header .path {
-          font-size: 16px;
-        }
-
-        .breadcrumbs {
-          display: flex;
-          flex-direction: row;
-          flex-wrap: wrap;
-          gap: 6px;
-          font-size: 16px;
-        }
-
-        .breadcrumbs a {
-          word-break: break-all;
-        }
-
-        .goto-top {
-          display: none;
-          margin-left: auto;
-          padding: 6px 10px;
-          background: none;
-          border: none;
-          border-radius: 6px;
-          gap: 4px;
-          align-items: center;
-          color: var(--c-text-1);
-          cursor: pointer;
-        }
-
-        .goto-top:hover {
-          background: var(--c-bg-elv);
-        }
-    </style>
-    {{ template "head" . }}
-</head>
-<body>
-{{ template "svg" . }}
-<div class="menu">
-    <div class="menu-content">
-        <a href="{{ .RootHref }}index.html" class="project-name">{{ .Name }}</a>
-        <div class="menu-item {{ if eq .Selected "code" }}selected{{ end }}">
-            <a href="{{ .RootHref }}blob/{{ .CurrentRefDir }}/index.html">
-                <svg aria-hidden="true" width="16" height="16">
-                    <use xlink:href="#code"></use>
-                </svg>
-                Code
-            </a>
-        </div>
-        <div class="menu-item {{ if eq .Selected "branches" }}selected{{ end }}">
-            <a href="{{ .RootHref }}branches.html">
-                <svg aria-hidden="true" focusable="false" width="16" height="16">
-                    <use xlink:href="#branch"></use>
-                </svg>
-                Branches
-            </a>
-        </div>
-        <div class="menu-item {{ if eq .Selected "tags" }}selected{{ end }}">
-            <a href="{{ .RootHref }}tags.html">
-                <svg aria-hidden="true" focusable="false" width="16" height="16">
-                    <use xlink:href="#tag"></use>
-                </svg>
-                Tags
-            </a>
-        </div>
-        <div class="menu-item {{ if eq .Selected "commits" }}selected{{ end }}">
-            <a href="{{ .RootHref }}commits/{{ .CurrentRefDir }}/index.html">
-                <svg aria-hidden="true" focusable="false" width="16" height="16">
-                    <use xlink:href="#commit"></use>
-                </svg>
-                Commits
-            </a>
-        </div>
-    </div>
-</div>
-<main>
-    <div class="main-content">
-        {{ template "body" . }}
-    </div>
-</main>
-<footer>
-</footer>
-</body>
-</html>
diff --git a/pkg/templates/list.gohtml b/pkg/templates/list.gohtml
deleted file mode 100644
index 9780504..0000000
--- a/pkg/templates/list.gohtml
+++ /dev/null
@@ -1,145 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.ListParams*/ -}}
-{{ define "head" }}
-    <style>
-      .files {
-        border: 1px solid var(--c-border);
-        border-top: none;
-        width: 100%;
-        border-bottom-left-radius: var(--border-radius);
-        border-bottom-right-radius: var(--border-radius);
-        overflow-x: auto;
-      }
-
-      .files .dir {
-        color: var(--c-dir);
-      }
-
-      .files a {
-        color: var(--c-text-1);
-      }
-
-      .files a:hover {
-        color: var(--c-brand-2);
-      }
-
-      .row {
-        display: flex;
-        height: 40px;
-        border-bottom: 1px solid var(--c-border);
-        padding-inline: 16px;
-        gap: 16px;
-      }
-
-      .row:last-child {
-        border-bottom: none;
-      }
-
-      .row:hover {
-        background-color: var(--c-bg-alt);
-      }
-
-      .cell {
-        flex: 1;
-        display: flex;
-        gap: 8px;
-        align-items: center;
-        white-space: nowrap;
-      }
-
-      .cell:not(:first-child) {
-        justify-content: flex-end;
-        max-width: 100px;
-      }
-
-      @media (max-width: 767px) {
-        .file-mode {
-          display: none;
-        }
-      }
-
-      {{ if .Readme }}
-      .markdown-container {
-        padding-inline: 16px;
-        border: 1px solid var(--c-divider);
-        border-radius: 8px;
-        overflow-x: auto;
-        margin-top: 16px;
-      }
-
-      .markdown-body {
-        width: 100%;
-        min-width: 200px;
-        max-width: 980px;
-        margin: 0 auto;
-        padding: 32px;
-        word-wrap: break-word;
-        font-size: 16px;
-        line-height: 1.5;
-      }
-
-      @media (max-width: 767px) {
-        .markdown-body {
-          padding: 16px;
-        }
-      }
-
-      {{.CSSMarkdown}}
-      {{ end }}
-    </style>
-{{ end }}
-
-{{ define "body" }}
-    {{ template "header" . }}
-
-    <div class="files">
-        {{ if .ParentHref }}
-            <div class="row">
-                <div class="cell">
-                    <svg aria-hidden="true" focusable="false" width="16" height="16" class="dir">
-                        <use xlink:href="#dir"></use>
-                    </svg>
-                    <a href="{{ .ParentHref }}">..</a>
-                </div>
-            </div>
-        {{ end }}
-
-        {{ if or .Dirs .Files }}
-            {{ range .Dirs }}
-                <div class="row">
-                    <div class="cell">
-                        <svg aria-hidden="true" focusable="false" width="16" height="16" class="dir">
-                            <use xlink:href="#dir"></use>
-                        </svg>
-                        <a href="{{ .Href }}">{{ .Name }}</a>
-                    </div>
-                </div>
-            {{ end }}
-
-            {{ range .Files }}
-                <div class="row">
-                    <div class="cell">
-                        <svg aria-hidden="true" focusable="false" width="16" height="16">
-                            <use xlink:href="#file"></use>
-                        </svg>
-                        <a href="{{ .Href }}">{{ .Name }}</a>
-                    </div>
-                    <div class="cell file-mode">{{ .Mode }}</div>
-                    <div class="cell file-size">{{ .Size }}</div>
-                </div>
-            {{ end }}
-        {{ else }}
-            <div class="row">
-                <div class="cell">(empty)</div>
-            </div>
-        {{ end }}
-    </div>
-
-    {{ if .Readme }}
-        <div class="markdown-container">
-            <div class="markdown-body">
-                {{ .Readme }}
-            </div>
-        </div>
-    {{ end }}
-{{ end }}
-
diff --git a/pkg/templates/markdown.gohtml b/pkg/templates/markdown.gohtml
deleted file mode 100644
index 7827950..0000000
--- a/pkg/templates/markdown.gohtml
+++ /dev/null
@@ -1,45 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.MarkdownParams*/ -}}
-{{ define "head" }}
-    <style>
-      [id] {
-        scroll-margin-top: var(--header-height);
-      }
-
-      .markdown-container {
-        border: 1px solid var(--c-divider);
-        border-top: none;
-        border-bottom-left-radius: 8px;
-        border-bottom-right-radius: 8px;
-        overflow-x: auto;
-      }
-
-      .markdown-body {
-        width: 100%;
-        min-width: 200px;
-        max-width: 980px;
-        margin: 0 auto;
-        padding: 32px;
-        word-wrap: break-word;
-        font-size: 16px;
-        line-height: 1.5;
-      }
-
-      @media (max-width: 767px) {
-        .markdown-body {
-          padding: 16px;
-        }
-      }
-
-      {{.CSSMarkdown}}
-    </style>
-{{ end }}
-
-{{ define "body" }}
-    {{ template "header" . }}
-    <article class="markdown-container">
-        <div class="markdown-body">
-            {{ .Content }}
-        </div>
-    </article>
-{{ end }}
-
diff --git a/pkg/templates/preview.gohtml b/pkg/templates/preview.gohtml
deleted file mode 100644
index bc6f898..0000000
--- a/pkg/templates/preview.gohtml
+++ /dev/null
@@ -1,144 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.PreviewParams*/ -}}
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1">
-    <title>Chroma Themes Preview</title>
-    <style>
-      * {
-        box-sizing: border-box;
-      }
-
-      body {
-        margin: 0;
-        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
-        background: #ffffff;
-        color: #3c3c43;
-        line-height: 1.4;
-      }
-
-      header {
-        position: sticky;
-        top: 0;
-        background: #f6f6f7;
-        border-bottom: 1px solid #c2c2c4;
-        padding: 12px 16px;
-        z-index: 10;
-      }
-
-      .meta {
-        color: rgba(60, 60, 67, .78);
-        font-size: 12px
-      }
-
-      main {
-        padding: 16px
-      }
-
-      .grid {
-        display: grid;
-        grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
-        gap: 16px;
-        justify-content: center;
-      }
-
-      .card {
-        border: 1px solid #c2c2c4;
-        border-radius: 10px;
-        overflow: hidden;
-        background: #fff;
-      }
-
-      /* Dark tone variant for theme cards */
-      .card.dark {
-        background: #1b1b1f; /* dark bg */
-        color: rgba(255, 255, 245, .86); /* light text */
-        border-color: #3c3f44; /* dark border */
-      }
-
-      .card h2 {
-        margin: 0;
-        padding: 10px 12px;
-        font-size: 14px;
-        border-bottom: 1px solid #c2c2c4;
-        display: flex;
-        justify-content: space-between;
-        align-items: center;
-      }
-
-      .card.dark h2 {
-        border-bottom-color: #3c3f44;
-      }
-
-      .badge {
-        font-size: 11px;
-        padding: 2px 6px;
-        border-radius: 6px;
-        border: 1px solid #c2c2c4;
-        color: rgba(60, 60, 67, .78);
-        background: #ffffff;
-      }
-
-      .card.dark .badge {
-        border-color: #3c3f44;
-        color: rgba(235, 235, 245, .6);
-        background: #1b1b1f;
-      }
-
-      .sample {
-        padding: 12px;
-      }
-
-      pre {
-        margin: 0;
-        padding: 8px 16px;
-        overflow-x: auto;
-        white-space: pre;
-        word-spacing: normal;
-        word-break: normal;
-        word-wrap: normal;
-        tab-size: 4;
-        font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace, monospace;
-        border-radius: 6px;
-        background-color: #f6f6f7;
-      }
-
-      .dark pre {
-        background-color: #161618;
-      }
-
-      pre > code {
-        display: block;
-        padding: 0 16px;
-        width: fit-content;
-        min-width: 100%;
-        line-height: 20px;
-        font-size: 12px;
-        color: rgba(60, 60, 67);
-      }
-
-      .dark pre > code {
-        color: rgba(255, 255, 245, .86);
-      }
-    </style>
-</head>
-<body>
-<header>
-    <div><strong>Chroma themes preview</strong></div>
-    <div class="meta">Showing {{ .Count }} themes. Use <code>--theme &lt;name&gt;</code> in the app.</div>
-</header>
-<main>
-    <div class="grid">
-        {{ range .Themes }}
-            <section class="card {{ .Tone  }}">
-                <h2><span>{{ .Name }}</span><span class="badge">{{ .Tone }}</span></h2>
-                <div class="sample">
-                    {{ .HTML }}
-                </div>
-            </section>
-        {{ end }}
-    </div>
-</main>
-</body>
-</html>
diff --git a/pkg/templates/svg.gohtml b/pkg/templates/svg.gohtml
deleted file mode 100644
index 833af42..0000000
--- a/pkg/templates/svg.gohtml
+++ /dev/null
@@ -1,50 +0,0 @@
-{{ define "svg" }}
-    <svg style="display: none" aria-hidden="true" focusable="false">
-        <symbol id="dir" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"/>
-        </symbol>
-        <symbol id="file" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V6h-2.75A1.75 1.75 0 0 1 9 4.25V1.5Zm6.75.062V4.25c0 .138.112.25.25.25h2.688l-.011-.013-2.914-2.914-.013-.011Z"/>
-        </symbol>
-        <symbol id="file-added" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V4.664a.25.25 0 0 0-.073-.177l-2.914-2.914a.25.25 0 0 0-.177-.073Zm4.48 3.758a.75.75 0 0 1 .755.745l.01 1.497h1.497a.75.75 0 0 1 0 1.5H9v1.507a.75.75 0 0 1-1.5 0V9.005l-1.502.01a.75.75 0 0 1-.01-1.5l1.507-.01-.01-1.492a.75.75 0 0 1 .745-.755Z"/>
-        </symbol>
-        <symbol id="file-modified" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M1 1.75C1 .784 1.784 0 2.75 0h7.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16H2.75A1.75 1.75 0 0 1 1 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h10.5a.25.25 0 0 0 .25-.25V4.664a.25.25 0 0 0-.073-.177l-2.914-2.914a.25.25 0 0 0-.177-.073ZM8 3.25a.75.75 0 0 1 .75.75v1.5h1.5a.75.75 0 0 1 0 1.5h-1.5v1.5a.75.75 0 0 1-1.5 0V7h-1.5a.75.75 0 0 1 0-1.5h1.5V4A.75.75 0 0 1 8 3.25Zm-3 8a.75.75 0 0 1 .75-.75h4.5a.75.75 0 0 1 0 1.5h-4.5a.75.75 0 0 1-.75-.75Z"/>
-        </symbol>
-        <symbol id="file-deleted" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V4.664a.25.25 0 0 0-.073-.177l-2.914-2.914a.25.25 0 0 0-.177-.073Zm4.5 6h2.242a.75.75 0 0 1 0 1.5h-2.24l-2.254.015a.75.75 0 0 1-.01-1.5Z"/>
-        </symbol>
-        <symbol id="file-renamed" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-3.5a.75.75 0 0 1 0-1.5h3.5a.25.25 0 0 0 .25-.25V4.664a.25.25 0 0 0-.073-.177l-2.914-2.914a.25.25 0 0 0-.177-.073H3.75a.25.25 0 0 0-.25.25v6.5a.75.75 0 0 1-1.5 0v-6.5Z"/>
-            <path fill="currentColor"
-                  d="m5.427 15.573 3.146-3.146a.25.25 0 0 0 0-.354L5.427 8.927A.25.25 0 0 0 5 9.104V11.5H.75a.75.75 0 0 0 0 1.5H5v2.396c0 .223.27.335.427.177Z"/>
-        </symbol>
-        <symbol id="arrow-top" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M3.47 7.78a.75.75 0 0 1 0-1.06l4.25-4.25a.75.75 0 0 1 1.06 0l4.25 4.25a.751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018L9 4.81v7.44a.75.75 0 0 1-1.5 0V4.81L4.53 7.78a.75.75 0 0 1-1.06 0Z"></path>
-        </symbol>
-        <symbol id="commit" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M11.93 8.5a4.002 4.002 0 0 1-7.86 0H.75a.75.75 0 0 1 0-1.5h3.32a4.002 4.002 0 0 1 7.86 0h3.32a.75.75 0 0 1 0 1.5Zm-1.43-.75a2.5 2.5 0 1 0-5 0 2.5 2.5 0 0 0 5 0Z"></path>
-        </symbol>
-        <symbol id="branch" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M9.5 3.25a2.25 2.25 0 1 1 3 2.122V6A2.5 2.5 0 0 1 10 8.5H6a1 1 0 0 0-1 1v1.128a2.251 2.251 0 1 1-1.5 0V5.372a2.25 2.25 0 1 1 1.5 0v1.836A2.493 2.493 0 0 1 6 7h4a1 1 0 0 0 1-1v-.628A2.25 2.25 0 0 1 9.5 3.25Zm-6 0a.75.75 0 1 0 1.5 0 .75.75 0 0 0-1.5 0Zm8.25-.75a.75.75 0 1 0 0 1.5.75.75 0 0 0 0-1.5ZM4.25 12a.75.75 0 1 0 0 1.5.75.75 0 0 0 0-1.5Z"></path>
-        </symbol>
-        <symbol id="tag" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="M1 7.775V2.75C1 1.784 1.784 1 2.75 1h5.025c.464 0 .91.184 1.238.513l6.25 6.25a1.75 1.75 0 0 1 0 2.474l-5.026 5.026a1.75 1.75 0 0 1-2.474 0l-6.25-6.25A1.752 1.752 0 0 1 1 7.775Zm1.5 0c0 .066.026.13.073.177l6.25 6.25a.25.25 0 0 0 .354 0l5.025-5.025a.25.25 0 0 0 0-.354l-6.25-6.25a.25.25 0 0 0-.177-.073H2.75a.25.25 0 0 0-.25.25ZM6 5a1 1 0 1 1 0 2 1 1 0 0 1 0-2Z"></path>
-        </symbol>
-        <symbol id="code" viewBox="0 0 16 16">
-            <path fill="currentColor"
-                  d="m11.28 3.22 4.25 4.25a.75.75 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.275-.326.749.749 0 0 1 .215-.734L13.94 8l-3.72-3.72a.749.749 0 0 1 .326-1.275.749.749 0 0 1 .734.215Zm-6.56 0a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042L2.06 8l3.72 3.72a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L.47 8.53a.75.75 0 0 1 0-1.06Z"></path>
-        </symbol>
-    </svg>
-{{ end }}
diff --git a/pkg/templates/tags.gohtml b/pkg/templates/tags.gohtml
deleted file mode 100644
index 97b77b0..0000000
--- a/pkg/templates/tags.gohtml
+++ /dev/null
@@ -1,71 +0,0 @@
-{{- /*gotype: mokhan.ca/antonmedv/gitmal/pkg/templates.TagsParams*/ -}}
-{{ define "head" }}
-    <style>
-      .tags {
-        border: 1px solid var(--c-border);
-        border-radius: var(--border-radius);
-        overflow: hidden;
-      }
-
-      .tag-row {
-        display: flex;
-        align-items: center;
-        gap: 12px;
-        height: 44px;
-        padding-inline: 16px;
-        border-bottom: 1px solid var(--c-border);
-        background-color: var(--c-bg-elv);
-      }
-
-      .tag-row:last-child {
-        border-bottom: none;
-      }
-
-      .cell {
-        display: flex;
-        gap: 8px;
-        align-items: center;
-      }
-
-      .tag-title {
-        flex: 1;
-      }
-
-      .tag-row a {
-        color: var(--c-text-1);
-      }
-
-      .tag-row a:hover {
-        color: var(--c-brand-2);
-        text-decoration: none;
-      }
-
-      .date {
-        font-family: var(--font-family-mono), monospace;
-        font-size: 12px;
-        color: var(--c-text-2);
-      }
-
-      .hash a {
-        font-family: var(--font-family-mono), monospace;
-        color: var(--c-text-2);
-      }
-    </style>
-{{ end }}
-
-{{ define "body" }}
-    <h1>Tags</h1>
-    <div class="tags">
-        {{ if .Tags }}
-            {{ range .Tags }}
-                <div class="tag-row">
-                    <div class="cell tag-title"><a href="commit/{{ .CommitHash }}.html">{{ .Name }}</a></div>
-                    <div class="cell date">{{ .Date | FormatDate }}</div>
-                    <div class="cell hash"><a href="commit/{{ .CommitHash }}.html">{{ ShortHash .CommitHash }}</a></div>
-                </div>
-            {{ end }}
-        {{ else }}
-            <div class="tag-row">(no tags)</div>
-        {{ end }}
-    </div>
-{{ end }}
diff --git a/pkg/templates/templates.go b/pkg/templates/templates.go
deleted file mode 100644
index 593f0a3..0000000
--- a/pkg/templates/templates.go
+++ /dev/null
@@ -1,213 +0,0 @@
-package templates
-
-import (
-	"embed"
-	_ "embed"
-	. "html/template"
-	"path/filepath"
-	"time"
-
-	"mokhan.ca/antonmedv/gitmal/pkg/git"
-)
-
-var funcs = FuncMap{
-	"BaseName": filepath.Base,
-	"FormatDate": func(date time.Time) HTML {
-		return HTML(date.Format(`<span class="nowrap">2006-01-02</span> <span class="nowrap">15:04:05</span>`))
-	},
-	"ShortHash": func(hash string) string {
-		return hash[:7]
-	},
-	"FileTreeParams": func(node []*FileTree) FileTreeParams {
-		return FileTreeParams{Nodes: node}
-	},
-}
-
-//go:embed css/markdown_light.css
-var CSSMarkdownLight string
-
-//go:embed css/markdown_dark.css
-var CSSMarkdownDark string
-
-//go:embed layout.gohtml header.gohtml file_tree.gohtml svg.gohtml
-var layoutContent embed.FS
-var layout = Must(New("layout").Funcs(funcs).ParseFS(layoutContent, "*.gohtml"))
-
-//go:embed blob.gohtml
-var blobContent string
-var BlobTemplate = Must(Must(layout.Clone()).Parse(blobContent))
-
-//go:embed markdown.gohtml
-var markdownContent string
-var MarkdownTemplate = Must(Must(layout.Clone()).Parse(markdownContent))
-
-//go:embed list.gohtml
-var listContent string
-var ListTemplate = Must(Must(layout.Clone()).Parse(listContent))
-
-//go:embed branches.gohtml
-var branchesContent string
-var BranchesTemplate = Must(Must(layout.Clone()).Parse(branchesContent))
-
-//go:embed tags.gohtml
-var tagsContent string
-var TagsTemplate = Must(Must(layout.Clone()).Parse(tagsContent))
-
-//go:embed commits_list.gohtml
-var commitsListContent string
-var CommitsListTemplate = Must(Must(layout.Clone()).Parse(commitsListContent))
-
-//go:embed commit.gohtml
-var commitContent string
-var CommitTemplate = Must(Must(layout.Clone()).Parse(commitContent))
-
-//go:embed preview.gohtml
-var previewContent string
-var PreviewTemplate = Must(New("preview").Parse(previewContent))
-
-type LayoutParams struct {
-	Title         string
-	Name          string
-	Dark          bool
-	CSSMarkdown   CSS
-	RootHref      string
-	CurrentRefDir string
-	Selected      string
-}
-
-type HeaderParams struct {
-	Ref         git.Ref
-	Header      string
-	Breadcrumbs []Breadcrumb
-}
-
-type Breadcrumb struct {
-	Name  string
-	Href  string
-	IsDir bool
-}
-
-type BlobParams struct {
-	LayoutParams
-	HeaderParams
-	CSS      CSS
-	Blob     git.Blob
-	IsImage  bool
-	IsBinary bool
-	Content  HTML
-}
-
-type MarkdownParams struct {
-	LayoutParams
-	HeaderParams
-	Blob    git.Blob
-	Content HTML
-}
-
-type ListParams struct {
-	LayoutParams
-	HeaderParams
-	Ref        git.Ref
-	ParentHref string
-	Dirs       []ListEntry
-	Files      []ListEntry
-	Readme     HTML
-}
-
-type ListEntry struct {
-	Name  string
-	Href  string
-	IsDir bool
-	Mode  string
-	Size  string
-}
-
-type BranchesParams struct {
-	LayoutParams
-	Branches []BranchEntry
-}
-
-type BranchEntry struct {
-	Name        string
-	Href        string
-	IsDefault   bool
-	CommitsHref string
-}
-
-type TagsParams struct {
-	LayoutParams
-	Tags []git.Tag
-}
-
-type Pagination struct {
-	Page       int
-	TotalPages int
-	PrevHref   string
-	NextHref   string
-	FirstHref  string
-	LastHref   string
-}
-
-type CommitsListParams struct {
-	LayoutParams
-	HeaderParams
-	Ref     git.Ref
-	Commits []git.Commit
-	Page    Pagination
-}
-
-type CommitParams struct {
-	LayoutParams
-	Commit    git.Commit
-	DiffCSS   CSS
-	FileTree  []*FileTree
-	FileViews []FileView
-}
-
-type FileTreeParams struct {
-	Nodes []*FileTree
-}
-
-// FileTree represents a directory or file in a commit's changed files tree.
-// For directories, IsDir is true and Children contains nested nodes.
-// For files, status flags indicate the type of change.
-type FileTree struct {
-	Name     string
-	Path     string
-	IsDir    bool
-	Children []*FileTree
-
-	// File status (applicable when IsDir == false)
-	IsNew    bool
-	IsDelete bool
-	IsRename bool
-	OldName  string
-	NewName  string
-	// Anchor id for this file (empty for directories)
-	Anchor string
-}
-
-// FileView represents a single file section on the commit page with its
-// pre-rendered HTML diff and metadata used by the template.
-type FileView struct {
-	Path       string
-	OldName    string
-	NewName    string
-	IsNew      bool
-	IsDelete   bool
-	IsRename   bool
-	IsBinary   bool
-	HasChanges bool
-	HTML       HTML // pre-rendered HTML for diff of this file
-}
-
-type PreviewCard struct {
-	Name string
-	Tone string
-	HTML HTML
-}
-
-type PreviewParams struct {
-	Count  int
-	Themes []PreviewCard
-}