SRT Proofreader

Execute the workflow in order. Keep edits minimal and deterministic.

1. Enter srts/

1. 1. Change directory to the task's srts/ folder.
2. Stop and report if srts/ does not exist.

2. Ensure Git Baseline

1. 1. Check whether srts/ is already inside a git repository.
2. If not inside a git repository:

1. 3. Do not rewrite existing history.

3. Require and Read source.md

1. 1. Check whether srts/source.md exists.
2. If missing, stop immediately and tell the user: 还没有创建 source.md.
3. Read source.md before editing subtitles.
4. Extract terminology and proper nouns from source.md, then use them as authoritative wording.

4. Select the Main .srt File

1. 1. List candidates in srts/ with:

1. 2. Require exactly one candidate.
2. If zero candidates, stop and report.
3. If multiple candidates, stop and ask the user which file is the main subtitle file.

5. Handle Large Files (>400 lines)

1. 1. Count lines in the main .srt.
2. If line count is <=400, edit directly.
3. If line count is >400:

1. 4. Use this script interface:

6. Subtitle Editing Rules

1. 1. Edit only typo-level text issues and term consistency.
2. Never modify subtitle sequence numbers.
3. Never modify timestamp lines (-->).
4. Preserve original line structure and blank-line boundaries.
5. Use source.md terminology as first priority.
6. Do not introduce new trailing punctuation on the final subtitle text line.

7. Final Verification

1. 1. Review git diff and confirm index/timestamp lines are unchanged.
2. Confirm only subtitle text lines were modified.
3. Report completion with a short summary of corrected term categories.