Archive completed tasks, add cleanup commands, self-documenting dashboard UI

- Archive 79 completed framework-dev tasks from tasks/ -> tasks/complete/
- status.py: add --cleanup-done and --install-cleanup-schedule commands
- Add scripts/automaton-cleanup.sh for periodic task archiving
- Dashboard: rename 'Background' tab -> 'Agent', 'Cleanup' agent -> 'Completed Task Archiver', remove redundant group headers and pill badges, dim inactive agent placeholders
- .rules.md: add Self-Documenting UI Names rule
- New tests: test_cleanup_done.py, expanded test_app.py and test_task.py

tasks/complete/hook-install-process/IMPLEMENTATION.md

@@ -0,0 +1,27 @@
+# Implementation: Hook Installation in Onboarding and Upgrade
+
+## Changes
+
+### 1. prompts/onboarding.md — Step 2c: Pre-Commit Hook Installation
+- Added Step 2c between VRAM config and Output sections
+- Checks for `.git/hooks/` directory
+- Creates symlink from `.git/hooks/pre-commit` to `~/.automaton/scripts/git-hooks/pre-commit`
+- Warns if existing hook is not our symlink
+- Verifies hook works with `status.py --can-edit`
+
+### 2. scripts/upgrade.sh — Hook installation during upgrade
+- Added after the "Upgrade Complete" message
+- Detects `.git/hooks/` directory
+- If hook doesn't exist: creates symlink
+- If hook is already our symlink: reports "already linked"
+- If hook exists but is not our symlink: warns user, prints manual install command
+- If no `.git/hooks/`: prints note with manual install command
+
+### 3. scripts/install.sh — Post-install next steps
+- Replaced single "Next step" with numbered list
+- Added hook installation as step 2
+- Added explanation of what the hook does
+
+## Tests
+- All 200 tests pass
+- Shell syntax checks pass for install.sh and upgrade.sh