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/push-to-gitea/.state

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+complete

tasks/complete/push-to-gitea/.state.approvals

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+research:approved|2026-06-15T18:56:27.582219+00:00|user

tasks/complete/push-to-gitea/ADVERSARIAL_BUG_REPORT.md

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+# Adversarial Bug Report: Push to Gitea
+No issues.

tasks/complete/push-to-gitea/BUG_REPORT.md

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+# BUG_REPORT.md\nNo issues.

tasks/complete/push-to-gitea/DOC_REVIEW.md

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+# Doc Review: Push to Gitea
+No issues.

tasks/complete/push-to-gitea/IMPLEMENTATION.md

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+# Implementation: Push to Gitea
+
+Pushed commit af66f50 to origin/main. 26 files changed, 511 insertions, 27 deletions.

tasks/complete/push-to-gitea/SPEC.md

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+# Push to Gitea
+
+## Goal
+Push latest changes to the gitea remote.
+
+## Changes
+- README.md: v2.0 documentation (project flag, can-edit modes, upgrade, enforcement)
+- scripts/status.py: fix _infer_state_from_artifacts heuristic, fix cmd_validate_folder corrupted state
+- scripts/upgrade.sh: remove || true, add python3 check, use git rev-parse --git-dir
+- tests/test_status.py: 6 new tests
+- Task artifacts for hook-install-process, readme-upgrade-docs, pre-existing-fixes

tasks/complete/push-to-gitea/VERDICT.md

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+# Verdict: push-to-gitea
+## Status: PASS
+Pushed commit af66f50 to origin/main. 26 files changed.
+## Score
++5