# Review by Linus Torvalds (Round 1)

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VERDICT: approve

FINDINGS:
- [src/colonyos/tui/widgets/transcript.py]: The `_pending_programmatic_clear` + `_programmatic_scroll` two-flag dance is correct but creates a three-state machine that's one refactor away from a subtle bug. A single counter that `on_scroll_y` decrements would be simpler. Not blocking — code is correct and well-commented.
- [src/colonyos/tui/styles.py]: CSS fix is textbook correct. Dead descendant selector merged into direct selector, `overflow: hidden` on Screen. Four lines, root cause addressed.
- [tests/tui/test_app.py]: `test_unread_lines_resets_when_auto_scroll_reengages` manually sets fields instead of exercising `on_scroll_y()` — tests the concept, not the code path. Minor; the `re_enable_auto_scroll` test covers the real path.
- [tests/tui/test_app.py]: `asyncio.sleep(0.2)` waits in integration tests are pragmatic but brittle. Acceptable for Textual async rendering, but worth noting.

SYNTHESIS:
This is a clean, well-scoped bugfix. The diff is 53 lines of production code and 166+144 lines of tests — that's the right ratio. Every change traces directly to a PRD requirement; there's no scope creep, no clever abstractions, no unnecessary refactoring. The CSS fix is the obviously correct thing (inheritance ≠ containment — CSS 101). Disabling RichLog's built-in `auto_scroll` and making the custom `_auto_scroll` the sole controller eliminates the two-controllers-fighting-each-other bug. The unread-lines indicator uses `notify()` with a `was_zero` gate to avoid toast spam — simple data structure, simple control flow. The threshold re-engagement at 3 lines is hardcoded (good — don't make it configurable until someone asks). All 3,074 tests pass with zero regressions. Ship it.
