irisandClaude Sonnet
26163b25b2
Ports app/.../TranscriptCache.kt (chunked JSONL directory, suffix/gap tracking, backwards line reader, damage recovery, eviction) with the full TranscriptCacheTest suite (18 cases). One correction the port found in translation: SessionCache::guard's Err branch would have disabled the whole cache on a single damaged chunk, since a damaged suffix and a real I/O failure both arrived as Err from the same closure -- separated so damage discards only the one session, matching the Kotlin original's separate `catch (e: Damaged)` from `catch (e: IOException)`. cargo test (67 passed), clippy --all-targets and fmt clean. Co-Authored-By: Claude Sonnet <noreply@anthropic.com>