Close all 10 tasks through full lifecycle (Implementation → Bug Find → Adversarial → Doc Review → Referee)

- Drive all approved tasks to completion with VERDICT.md
- Fix state machine: IMPLEMENTATION.md was never checked in determine_task_state()
- Fix state machine: DOC_REVIEW.md priority wrong (checked after BUG_REPORT)
- Fix board display: approved planning tasks now advance to Design group
- Fix board display: rejected planning tasks move to Blocked group
- Fix path traversal: review API validated task names against ../ injection
- Fix URL encoding: unquote() task names in API path parsing
- Fix comment parsing: robust REVIEW.md read/write, handle falsy comments
- Fix dead code: KanbanBoard class missing COLUMNS and __init__
- Fix inotify: explicit error messages and polling fallback
- Fix review API: validate task names, prevent path traversal
- Update CHANGELOG.md with all changes

tasks/changelog/IMPLEMENTATION.md

@@ -0,0 +1,24 @@
+# Implementation: Changelog and Release Notes Process
+
+## Summary
+
+Created a root-level CHANGELOG.md and codified the changelog update process in `.rules.md`.
+
+## Changes Made
+
+### `CHANGELOG.md`
+Created at `~/.automaton/CHANGELOG.md` with:
+- `[unreleased]` header
+- `### Added` and `### Changed` sections
+- Entries for all completed tasks (additive-extension-model, framework-self-enforcement, changelog, framework-audit)
+
+### `.rules.md`
+Added "Changelog" section:
+- When a task reaches Resolution (VERDICT.md written), append an entry to CHANGELOG.md
+- Format: `- description (#task-name)` under the appropriate section
+
+## Files Created
+- `CHANGELOG.md` — root-level changelog
+
+## Files Modified
+- `.rules.md` — added changelog rules