feat(identifiers): prepare verified cutover batches

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a023c0-a0a3-7c03-b395-5a0d2757214d

decisions/RMGR-DEC-2026-001-whynot-identifier-batch.md

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+# RMGR-DEC-2026-001 — Whynot Design identifier cutover batch
+
+```yaml
+id: RMGR-DEC-2026-001
+kind: decision
+title: Approve deterministic identifier batch 0002 for whynot-design
+status: open
+decision_type: pending
+owner: Bernd Worsch
+repo: repo-manager
+workplan: RMGR-WP-0005
+workplan_task: RMGR-WP-0005-T04
+requested_dispositions:
+  - approved
+  - revised
+  - rejected
+source_plan: docs/evidence/RMGR-WP-0005-helixforge-uuid-migration-plan-2026-08-22-v2.json
+source_plan_sha256: ac97f6e4f0b35db63a0dc1b4a439f0a39738d13c1407f18419f706d780d4eea0
+batch_manifest: docs/evidence/RMGR-WP-0005-batch-0002-whynot-design.json
+batch_sha256: 4039224352c6590fdc6b41e739539f1f9c92d098b43ed6e30b3cd9a87b53da65
+scope:
+  repositories: [whynot-design]
+  replacements: 1
+  assignments: 0
+apply_authorized: false
+approval_effect: >-
+  Approved authorizes one repository-atomic forward cutover of exactly the
+  pinned batch in both current projections and the authoritative repository
+  file, subject to repeated no-drift and restore-point checks. Revised or
+  rejected authorizes no mutation.
+rollback: >-
+  Reverse the file transaction if written, then reverse workstation and
+  production projection transactions using their durable aliases.
+evidence: docs/evidence/RMGR-WP-0005-batch-0002-readiness-2026-08-22.md
+created: "2026-08-22"
+updated: "2026-08-22"
+```
+
+## Decision requested
+
+Approve, revise, or reject the exact batch manifest named above. Approval is
+limited to `whynot-design` and the single `WHYNOT-WP-0003` UUID replacement; it
+does not authorize any later fleet batch.
+
+The manifest remains fail-closed: any Git, source-fingerprint, projection, or
+plan-seal drift before execution voids the approval and requires a new batch
+hash.