- viewerState.ts: pure reducer for the clean/dirty, same/changed/gone,
container-down and overwrite-on-save states (spec §5), plus the
pollEffect/canSave helpers EditorPane will drive off.
- editability.ts: classifies a fetched file as text/image/binary and
decides whether it is editable, deferring to Rust's readonly_reason
when it refuses.
Per preflight P1, languages.ts/.test.ts move to Task 10 (needs the
CodeMirror packages Task 6 installs; out of scope for this task's
worktree). Per P3, the "reloaded" action now carries `truncated` and
`polledHash` so a poll-driven reload of a truncated (prefix-hash-only)
file adopts the polled full-file hash instead of re-triggering a
reload on every subsequent poll -- with a reducer test covering it.
Per P13, tightened the poll_failed/canSave test to start from a dirty
doc so it actually exercises containerDown rather than passing only
because the doc was clean.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
