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/inflight-upgrade-path/IMPLEMENTATION.md

@@ -1,48 +0,0 @@
-# Implementation: Inflight Upgrade Path
-
-## Changes Made
-
-### 1. `.state` file bootstrap for existing tasks
-- `scripts/upgrade.sh` scans all task folders, infers phase from artifacts, writes `.state` with the inferred phase
-- `scripts/status.py` naturally bootstraps `.state` when it encounters tasks without one (fallback heuristic)
-
-### 2. Upgrade script: `scripts/upgrade.sh`
-- Scans `{project}/.automaton/tasks/` for all task folders
-- For each task without `.state`, infers phase from artifact heuristic and writes `.state`
-- Also scans sub-task folders in `subtasks/*/`
-- Creates `.state.approvals` for each task
-- Runs `status.py --audit` for violation summary
-- Produces human-readable summary with counts of bootstrapped vs. already-had-state tasks
-- Adds framework version marker to `config.md`
-
-### 3. Task creation via `status.py --create-task`
-- Orchestrator prompt updated to use `status.py --create-task` instead of manual `mkdir`
-- Creates `.state` = `new` and empty `.state.approvals` atomically
-- Validates kebab-case task names
-
-### 4. Backward-compatible phase prompts
-- Phase prompts include `.state` precondition check but warn (not refuse) if `.state` is missing
-- This ensures graceful transition from v1 to v2
-
-### 5. Documentation updates
-- `README.md` — Added State Enforcement (v2.0) section, Multi-Agent section, Quick Reference commands
-- `CHANGELOG.md` — Added comprehensive v2.0 changes under [unreleased]
-- `config.md` — Added Framework Version section with version 2.0 and state enforcement indicator
-
-### 6. Version marker in config.md
-```
-## Framework Version
-- **Version**: 2.0
-- **State enforcement**: enabled (.state file + status.py)
-```
-
-## Files Modified/Created
-- `scripts/upgrade.sh` (new)
-- `scripts/status.py` (includes bootstrap logic)
-- `README.md` (updated)
-- `CHANGELOG.md` (updated)
-- `config.md` (updated)
-
-## Test Results
-- Shell syntax check: `bash -n upgrade.sh` passes
-- All 183 pytest tests passing