chore(compress): archive v1.30 phase files — active root 17 → 8 files

Archived (snapshotted to .ciagent/archive/, removed from active root):
- CLARIFY.md → CLARIFY-v1.30.md (D-241..D-246)
- RESEARCH.md → RESEARCH-v1.30.md (render pipeline, mermaid, vision)
- GRILL.md → GRILL-v1.30.md (PROCEED 0.88, G-1..G-4)
- PLAN.md → PLAN-v1.30.md (P1 4 waves + P3 polish)
- PERSONAS.md → PERSONAS-v1.30.md (lead+backend+ci-doc+ci-cli)
- IDEATE.md → IDEATE-v1.27.md (stale)
- IAM_POLICY.md → IAM_POLICY-v1.28.md (stale)
- REGRESSION_REPORT.{md,json} → REGRESSION_REPORT-v1.26.{md,json} (stale)

Active root (8 persistent files):
PROJECT.md, REQUIREMENTS.md, ROADMAP.md, STATE.md, ARCHITECTURE.md,
NORTH_STAR.md, config.json, CHECKPOINT.json

---ci---
project: acdl
phase: 4
milestone: v1.30
status: complete
action: compress
---/ci---

.ciagent/archive/README.md

@@ -8,8 +8,8 @@ state for offline agent loading.
 
 ## Why archive
 
-The active milestone is v1.27 (PO State Catalog & Ciagent Compression).
-The `.ciagent/` root was compressed twice:
+The active milestone is v1.30 (Single-shot Leadership Deck, complete).
+The `.ciagent/` root was compressed three times:
 
 1. **v1.26 P2 compression** (~11,164 lines → ~5,232): the
    completed-milestone narratives (v1.0–v1.24) were relocated. Per the
@@ -22,6 +22,14 @@ The `.ciagent/` root was compressed twice:
    + COST (predates v1.26 pilot) were relocated. The 4 pre-execution
    files (CLARIFY/GRILL/IDEATE/RESEARCH) were rewritten by v1.27 P0
    and stay active through v1.27.
+3. **v1.30 post-milestone compression** (17 → 8 files): the v1.30
+   phase-specific pre-execution files (CLARIFY/RESEARCH/GRILL/PLAN/
+   PERSONAS) were snapshotted to the archive and removed from the
+   active root — they are regenerated fresh each milestone. The stale
+   IDEATE (v1.27), IAM_POLICY (v1.28), and REGRESSION_REPORT (v1.26)
+   were also archived. The persistent files (PROJECT, REQUIREMENTS,
+   ROADMAP, STATE, ARCHITECTURE, NORTH_STAR, config, CHECKPOINT)
+   remain in the active root.
 
 ## Contents