docs(tess): sync M4 milestone to in-progress + map TESS-MEM-001 to AC-TESS-05

- MISSION-MANIFEST: TESS-M4 not-started -> in-progress (5 M4 PRs merged:
  #734/#735/#736/#737/#738; #739 mergeable pending Mos merge; provider-registration
  linchpin still blocked; M4-V not yet re-fired -> not 'done')
- VERIFICATION-MATRIX: fold orphaned TESS-MEM-001 into AC-TESS-05 with
  operator-memory reachability evidence (M4-W-001 spine: #736 plugin + #739 consumer)

docs/tess/MISSION-MANIFEST.md

@@ -32,7 +32,7 @@ Ship Tess as Jason's durable Pi-native GPT-5.6 Sol high-reasoning interaction ag
 | TESS-M1 | #707  | Runtime contracts and security foundation                           | ready       | AgentRuntimeProvider, normalized events/capabilities/errors, RBAC/audit contracts and contract tests merged       |
 | TESS-M2 | #708  | Durable Pi Tess service and state                                   | not-started | GPT-5.6 Sol high service starts, resumes, checkpoints, and passes restart/compaction tests                        |
 | TESS-M3 | #709  | Discord and CLI interaction surfaces                                | not-started | One durable session works through dedicated Discord binding and `mosaic tess`, including attach and approvals     |
-| TESS-M4 | #710  | Fleet, Mos, Hermes, memory, state, and tool plugins                 | not-started | Fleet/Mos boundary and transitional capability matrix demonstrated end-to-end                                     |
+| TESS-M4 | #710  | Fleet, Mos, Hermes, memory, state, and tool plugins                 | in-progress | Fleet/Mos boundary and transitional capability matrix demonstrated end-to-end                                     |
 | TESS-M5 | #711  | Matrix/native migration, recovery, documentation, and qualification | not-started | Transport parity, migration/rollback matrix, security review, docs, greenfield and deployment validation complete |
 
 ## Success Criteria