docs(audit): fix stale milestone labels + checkpoint + config — v1.29 complete, v1.30 scoped

Audit fixes:
- PROJECT.md: v1.28 + v1.29 subheaders 'Feature milestone — active' → 'complete'
- REQUIREMENTS.md: same fix (v1.28 + v1.29)
- PROJECT.md: v1.29 header '(active, milestone branch...)' → '(complete, tag v1.28.6, merged to main 2026-08-20)'
- REQUIREMENTS.md: same header fix
- config.json: active_milestone v1.29 → v1.30 (v1.29 complete, next milestone scoped)
- CHECKPOINT.json: cleared v1.29 complete state, set v1.30 phase 0 specify (per run.md clear-checkpoint)

---ci---
project: acdl
phase: 0
milestone: v1.30
status: specify
audit: fixes-applied
---/ci---

.ciagent/CHECKPOINT.json

@@ -1,13 +1,27 @@
 {
-  "phase": 6,
-  "stage": "complete",
-  "milestone": "v1.29",
-  "phase_role": "final",
-  "milestone_complete": true,
-  "milestone_release": {"tag": "v1.28.6", "type": "feature", "release": "local-only (push credentials unavailable — blocked_env_vars policy)"},
-  "merged_to_main": true,
-  "branches_deleted": ["phase/00-pre-execution", "phase/01-publish-pipeline", "phase/02-gitea-scrub-decisions", "phase/03-cfn-archive-tf-delegation", "phase/04-operator-guide-reference-tracking", "nova-blockchain-exchange/phase/05-consumer-deploy-bump", "phase/06-final-review-ship", "milestone/v1.29-reposplit-identity"],
-  "tags": ["v1.28.0", "v1.28.1", "v1.28.2", "v1.28.3", "v1.28.4", "v1.28.5", "v1.28.6", "v1.29.0"],
-  "updated_at": "2026-08-20T01:55:00Z",
-  "notes": "v1.29 COMPLETE. Milestone merged to main. Tag v1.28.6 = milestone release. All milestone branches deleted. Next run starts a new milestone."
+  "phase": 0,
+  "stage": "specify",
+  "milestone": "v1.30",
+  "phase_role": "pre_execution",
+  "attempts": 0,
+  "updated_at": "2026-08-20T11:00:00Z",
+  "project": "acdl",
+  "projects": ["acdl", "nova-blockchain-exchange"],
+  "active_milestone": "v1.30",
+  "milestone_branch": null,
+  "phase_branch": null,
+  "tag_line": "v1.29.x",
+  "phase_name": "pre-execution",
+  "milestone_type": "feature",
+  "reqs_covered": [],
+  "reqs_partial": [],
+  "previous_milestone": {
+    "milestone": "v1.29",
+    "tag": "v1.28.6",
+    "complete": true,
+    "merged_to_main": "9dc5669",
+    "branches_deleted": true,
+    "releases_created": true
+  },
+  "notes": "v1.29 COMPLETE (v1.28.6, merged to main 9dc5669, 8 Gitea releases ids 803-810). Checkpoint cleared per run.md. v1.30 PDLC Phase 0 intake authored (STATE.md updated 2026-08-20, commit 713ad2e). Initiative: Leadership Presentation Deck (≤7 slides, S&P theme, 18-month CDLC→SDLC→PDLC roadmap). Next: /ci-run to execute v1.30 Phase 0 (SPECIFY→CLARIFY→RESEARCH→PLAN→GRILL)."
 }