* fix: avoid native hangs in gsd auto paths
* fix: use .js extension in edit-diff.test.ts import for tsc compatibility
* fix: prevent OOM on large file diffs and implement context-line windowing
- Add size guard (MAX_DP_CELLS=4M) to buildLineDiff that falls back to a
linear-time prefix/suffix matching algorithm for large files, preventing
the O(n*m) DP table from causing OOM crashes
- Implement contextLines parameter in generateDiffString so only lines
within N lines of a change are rendered (with "..." separators), matching
unified diff behavior — the parameter was previously accepted but ignored
- Add tests for both context windowing and large-file fallback
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Co-authored-by: TÂCHES <afromanguy@me.com>
d35ae683f1