feat(NET-WP-0018-T03): initial retrospective + gap matrix (substantial draft)

- Created docs/security-bootstrap-retrospective.md:
  - Exec summary (wins: S6, console/0019 automation, evidence discipline, T02 arch doc; gaps: UE adapters, consolidated guide, tests, proper audit)
  - 9 bumps with diagnosis/now-automated?/remaining (realm, OIDC callbacks, LLDAP claims, OpenBao mapping, tokens, operator-state, secret taint pre-0019, audit correlation, etc.)
  - Full gap matrix table (areas, current status incl. 0019/T02, remaining, priorities)
  - Recommendations (T05 consolidate guide, T07/T08 use 0019+T02 as fixtures, T09 classify UE risk, continue pragmatic)
  - Refs to T02 doc, 0017/0019 evidence, console, assessment gap 7, pragmatic records
- Updated workplan T03 with progress note (still in_progress for expansion)
- Pragmatic tracking: progress events (with task), file notes, commit
- Builds directly on T02 + prior 0017/0019 + Coordination pragmatic guidance

Feeds T05/T06/T08/T09. Next tasks can reference this + T02.

workplans/NET-WP-0018-bootstrap-automation-and-rebuild-readiness.md

@@ -148,7 +148,7 @@ canon/standards/user-engine-boundary-contract_v0.1.md and the assessment.
 
 ```task
 id: NET-WP-0018-T03
-status: todo
+status: in_progress
 priority: high
 state_hub_task_id: "1a3c4261-4133-4021-bd53-ea3dc77021a0"
 ```
@@ -174,6 +174,10 @@ repeatable automation. Gaps remaining: UE adapter integration (see assessment).
 The first bootstrap's interactive repairs (realm drift, callbacks, claim shape,
 token expiry, operator-state) are now partially automated via console/evidence.
 
+**2026-06-03:** Started T03 (after T02 arch doc complete). Using pragmatic (progress + file notes). Compiling bumps from 0015-0017/0019 history + T02 doc + console/metadata/evidence examples. Will produce docs/security-bootstrap-retrospective.md + gap matrix (state persistence, privacyIDEA repair, KeyCape delivery, OIDC callbacks, OpenBao claims, token revocation, **audit**, escrow, rebuild verification + new: 0019 dry-run hygiene/automation, console evidence, UE gaps). What is now automated vs. remaining manual/fragile.
+
+**2026-06-03:** T03 initial substantial progress. Created docs/security-bootstrap-retrospective.md (exec summary, 9 detailed bumps with "now automated?" status, full gap matrix table covering audit + UE + 0019 items, recommendations for T05/T07/T08/T09, references to T02 doc + pragmatic records + evidence). Uses 0019 dry-run/evidence as model. Still in_progress (expand with any new from later T0x). 
+
 ### T04 - Review Repository Intent And Scope Boundaries
 
 ```task