feat: Phase 8 OpenClaw integration verified end-to-end

Verified t420-openclaw/atocore.py against live Dalidou from both
the development machine and the T420 (clawdbot @ 192.168.86.39):

- health: returns 0.2.0 + build_sha + vector count
- auto-context: project detection + context/build produces full
  packs with Trusted Project State, Project Memories band, and
  retrieved chunks (tested p05 vendor query and p06 firmware query)
- fail-open: unreachable host returns {status: unavailable,
  fail_open: true} without crashing or blocking the session

API surface coverage: atocore.py hits 15/33 endpoints (core
retrieval + project state + context build). Memory management,
interactions, and backup endpoints are correctly excluded — those
belong to the operator client (scripts/atocore_client.py) per the
read-only additive integration model.

No code changes needed — the April 6 atocore.py already matches
the current API surface. Wave 2 state entries and project-memory
band changes are transparent to the client (they enrich
formatted_context without requiring client-side updates).

Cloned repo to T420 at /home/papa/ATOCore for future OpenClaw use.
Updated master-plan-status.md: Phase 8 moved from Partial to
Baseline Complete.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/master-plan-status.md

@@ -27,7 +27,18 @@ read-only additive mode.
 ### Partial
 
 - Phase 4 - Identity / Preferences
-- Phase 8 - OpenClaw Integration
+
+### Baseline Complete
+
+- Phase 8 - OpenClaw Integration. As of 2026-04-12 the T420 OpenClaw
+  helper (`t420-openclaw/atocore.py`) is verified end-to-end against
+  live Dalidou: health check, auto-context with project detection,
+  Trusted Project State surfacing, project-memory band, fail-open on
+  unreachable host. Tested from both the development machine and the
+  T420 via SSH. The helper covers 15 of the 33 API endpoints — the
+  excluded endpoints (memory management, interactions, backup) are
+  correctly scoped to the operator client (`scripts/atocore_client.py`)
+  per the read-only additive integration model.
 
 ### Baseline Complete