[codex] Add automation config and diagnostics controls

[ScriptedAlchemy]

Summary

• Adds conservative automation configuration defaults, project sidecar persistence, CLI commands, and dashboard controls for enabling/disabling standalone automation.
• Introduces automation backend contracts, managed skill draft primitives, and a JSONL automation run ledger for auditable self-improvement runs.
• Adds dashboard diagnostics for tool/hook/prompt rollups, surfaces automation capabilities to the dashboard wrapper, and records hook invocations for analytics.
• Keeps clippy-deny coverage clean by replacing fixable allows/ignores with typed defaults, explicit error handling, and focused tests.

Validation

• cargo test --test automation_run_ledger_test
• cargo test --test automation_backend_test --test managed_skills_test --test automation_config_test --test user_config_test
• cargo test --test dashboard_api_test automation_config_is_dashboard_controllable_and_persistent
• cargo test --test dashboard_analytics_api_test analytics_diagnostics_reports_tool_hook_and_prompt_rollups
• cargo test --features test-transport --test mcp_server_test test_server_stats
• cargo test --test cli_non_interactive_test automation_config_enable_writes_project_sidecar_noninteractively
• npm run test:dom -- test/curation-data.vitest.tsx test/curation-panel.vitest.tsx from dashboard/
• npm run build from dashboard/
• cargo clippy --all-targets --all-features -- -D warnings
• git diff --check
• scripts/check-conventional-commits.sh <merge-base>..HEAD

CI

GitHub Actions restarted for the conventional single-commit push; checks were queued/in progress when this description was updated.

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Latest commit: b1e933a

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[ScriptedAlchemy]

Closed in favor of the split replacement stack: #127 -> #128 -> #129 -> #130 -> #131. The final stack tip matches this branch's diff.

[ScriptedAlchemy]

Closing in favor of the smaller stacked replacement PRs: #127, #128, #129, #130, and #131.

[ScriptedAlchemy]

Replaced by the split review stack:\n\n- #127 feat: add self-improving automation foundation\n- #128 feat: expose automation through MCP tools\n- #129 feat(dashboard): add automation and curation APIs\n- #130 feat(dashboard): add curation automation controls\n- #131 docs: document self-improving automation loops\n\nThe top split branch matches this PR's final tree.