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/state-file-enforcement/IMPLEMENTATION.md

@@ -1,50 +0,0 @@
-# Implementation: State File Enforcement
-
-## Changes Made
-
-### 1. `.state` file format (implemented in `scripts/status.py`)
-- `.state` file contains a single phase name (e.g., `research`, `research:awaiting_approval`, `implement`)
-- Written atomically via `.state.tmp` → `.state` rename
-- `.state.approvals` append-only log records all approvals with timestamp and approver
-- `.state.lock` for multi-agent claiming (optional, only in multi-agent mode)
-- Non-artifact metadata files (`.state`, `.state.approvals`, `.state.lock`, `.state.tmp`, `VRAM_CONFIG.md`, `PARENT_SPEC.md`, `REVIEW.md`) are excluded from artifact checks
-
-### 2. State transitions with approval sub-states
-- Approval-gated phases: research, decomposition, design, test_design now have `:awaiting_approval` → `:approved` sub-states
-- Non-approval phases: implement, bug_find, adversarial_bug_find, doc_review, referee have no sub-states
-- `status.py --transition` refuses transitions past `:awaiting_approval` without `--approve`
-- `status.py --approve` transitions `:awaiting_approval` → `:approved` and records approval in `.state.approvals`
-
-### 3. Backward compatibility
-- If `.state` doesn't exist, `status.py` infers phase from artifacts and writes `.state`
-- `upgrade.sh` bootstraps `.state` for all existing tasks
-- Phase prompts work with or without `.state` (warns if missing)
-
-### 4. Forbidden artifacts per phase (implemented in `status.py --validate-folder`)
-- Each phase has a defined set of artifacts that must NOT exist (artifacts from future phases)
-- `--validate-folder` checks and reports violations
-- `--transition` refuses to proceed if forbidden artifacts exist
-
-### 5. Task creation gate (implemented in `status.py --create-task`)
-- `--create-task` creates task folder with `.state` = `new` and empty `.state.approvals`
-- Validates kebab-case task names
-- Refuses if task already exists
-- `--audit` Category 4 flags manually created task folders
-
-### 6. Orchestrator and workflow updates
-- `prompts/workflow.md` rewritten: `.state` is canonical, approval sub-states documented, `status.py` commands referenced
-- `prompts/orchestrate.md` reduced from 493 to 143 lines, references `workflow.md` and `subtask_management.md`
-- All phase prompts include `.state` precondition check
-
-## Files Modified
-- `scripts/status.py` (new, 980 lines)
-- `prompts/workflow.md` (rewritten)
-- `prompts/orchestrate.md` (rewritten, 143 lines)
-- `prompts/subtask_management.md` (new, extracted from orchestrate.md)
-- `tests/test_status.py` (new, 25 tests)
-- `scripts/upgrade.sh` (new)
-
-## Test Results
-- 183 tests passing (including 25 new status.py tests)
-- Python compilation clean
-- Shell script syntax clean