# WI-3 Scratchpad — Compaction revocation and runtime-generation rollover

- **Issue:** Gitea #830
- **Branch:** `feat/830-compaction-revoke`
- **Base HEAD:** `abd2791f59b3f06f46dd08e55298ced72f6aa7c2`
- **Role:** sol author/build lane only; terra CODE and Opus SECREV are coordinator-owned.

## Mission prompt

Implement BUILD-BRIEF Deliverable 3.3 and D4 on merged WI-1/WI-2 under `packages/mosaic/`. Claude `PreCompact` and `SessionStart(matcher=compact)` plus Pi `session_before_compact`/`context` equivalents must revoke the active lease through the existing broker state machine. Any `runtime_generation` bump—including same-PID reload/resume/fork—must auto-revoke the prior incarnation so the new generation inherits no prior lease. M1 is Claude + Pi only.

Honor amended D2-v5 exactly: hard fail-closure when at least one observer fires or after lease expiry; both observers missing within TTL is an explicitly named bounded residual stale window (maximum 300 seconds, soak-tighten only), with no claim that the mutator gate bounds actions inside that window; total gate-hook miss is T-C. T12b/T30 must report both the within-TTL ALLOWED outcome and after-TTL DENIED outcome.

## Session start verification

- Worktree is clean on `feat/830-compaction-revoke` at exact required base `abd2791f59b3f06f46dd08e55298ced72f6aa7c2`; `origin/main` is the same SHA and includes merged WI-2 atop WI-1.
- Authority SHA-256 verified:
  - BUILD-BRIEF: `89fdbc27ed0e5050dc7b52f3ef2ddaea691edf17fd89d51b15e26fb5ed47171b`
  - SPEC-v5: `a6d07ade835758e8488ca10d3b0631caf0beb93ea3a6733631f151b0c2f01433`
  - Ratification: `bac58319c9c4028b5b40e1129e0033cdb5a6b7b02033c25f06f4cb77d7779c67`
  - sol red-team: `3da326a4ea91767b731e128a93b13194e8002358101e30de3fcb8ca2f8f54faa`
- WI-0 evidence pack SHA-256 `5d418306fcc597fd514e500bee40d1509f0bf467e46ee13fc5c280ed8274759d` read directly. Probe P3 is **PASS**: real Pi retained the same PID/starttime through reload/fork/new/resume while generations advanced and a prior VERIFIED generation was revoked.
- P6 planner-return ruling SHA-256 `b7bbb6ea6e8d9a5c3366993642ab4e4f65b961af04936dcac20bfbcdcbaf1a09` read directly: feature WI admission is GO with the exact-delivery empirical compatibility fact and disclosed T-C middle-drop residual; no receipt redesign.

## Plan and budget

1. RED real-socket acceptance for T12b/T30, each Claude observer, same-PID generation rollover, Claude/Claudex hook wiring, and Pi lifecycle wiring.
2. Add one broker client executable for observer revocation plus a private monotonic generation-file helper shared by launcher, gate, and revoker.
3. Wire Claude `PreCompact`, `SessionStart(compact)`, and resume/clear generation rollover; merge equivalent mandatory hooks into isolated Claudex settings.
4. Wire Pi pre/post compaction observers and reload/new/resume/fork generation rollover with local fail-closed tool blocking if lifecycle revocation fails.
5. Document the D2-v5 bounded stale window without claiming the mutator gate bounds within-TTL actions; update protocol/security/operations/sitemap/checklist.
6. Run focused real tests, independently measured executable coverage ≥85%, full repository gates, commit/push, open an unmerged `closes #830` PR, and hand off for terra CODE + mandatory Opus SECREV.

Working estimate: **35K tokens**. No explicit hard cap was supplied; reduce refactor breadth before touching locked broker authority/state-machine semantics.

## RED evidence

- New T12b/T30 test already reports the inherited primitive honestly: within-TTL **ALLOWED**, after-TTL **DENIED**. The complete AC remains RED because the mandatory threat-contract document is absent.
- Focused real-socket suite is RED with 7 expected failures: missing revoker executable (both Claude observers + generation bump), missing Claude/Pi wiring, missing isolated Claudex observers, and missing D2-v5 disclosure.
- Branch-focused Python suite is RED on the wished generation initializer/resolver interfaces and missing `lease_generation.py` / `revoke-lease.py`.
- Pi lifecycle suite is RED because the wished standalone `lease-lifecycle.ts` observer/generation module does not exist.

## Locked discipline

- RED-first T12b/T30 and observer/generation tests; test commit precedes implementation.
- Reuse broker `revoke_lease`; do not fork identity, lease, or transition authority.
- Preserve revoke-first/promote-last and WI-1/WI-2 reviewed state machine.
- ≥85% attributable executable coverage with real tests.
- No author self-review, no merge, no `--no-verify`.