docs: close 5.8.0 punch list — version sync, stale header, emoji clarity

- Fix /review command visual header: replace inline CLOSING box with
  skill reference (Code Reviewer uses 🔍 REVIEW, not 🏁 CLOSING)
- Update CLAUDE.md version 5.4.0 → 5.8.0, fix data-platform version
  in plugin table (1.1.0 → 1.3.0), update Last Updated date
- Add Unicode emoji to Phase Registry tables in visual-output.md
  (now shows 🎯 Target instead of just "Target")

Items verified complete:
- README.md already shows v5.8.0
- marketplace.json already shows 5.8.0
- CHANGELOG 5.8.0 entry complete (rfc-reject in both Changed/Removed)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/projman/commands/review.md

@@ -44,10 +44,7 @@ See `skills/review-checklist.md` for complete patterns:
 
 ## Visual Output
 
-```
-╔══════════════════════════════════════════════════════════════════╗
-║  📋 PROJMAN                                                      ║
-║  🏁 CLOSING                                                      ║
-║  Code Review                                                     ║
-╚══════════════════════════════════════════════════════════════════╝
-```
+See `skills/visual-output.md`. This command invokes the **Code Reviewer** agent:
+- Phase Emoji: 🔍
+- Phase Name: REVIEW
+- Context: Sprint Name

plugins/projman/skills/visual-output.md

@@ -29,10 +29,10 @@ Projman uses the double-line box drawing header style with emoji phase indicator
 
 | Agent | Phase Emoji | Phase Name | Context |
 |-------|-------------|------------|---------|
-| Planner | Target | PLANNING | Sprint Name or Goal |
-| Orchestrator | Lightning | EXECUTION | Sprint Name |
-| Executor | Wrench | IMPLEMENTING | Issue Title |
-| Code Reviewer | Magnifier | REVIEW | Sprint Name |
+| Planner | 🎯 Target | PLANNING | Sprint Name or Goal |
+| Orchestrator | ⚡ Lightning | EXECUTION | Sprint Name |
+| Executor | 🔧 Wrench | IMPLEMENTING | Issue Title |
+| Code Reviewer | 🔍 Magnifier | REVIEW | Sprint Name |
 
 ### Command Headers (Non-Agent)
 
@@ -40,14 +40,14 @@ For commands that don't invoke a specific agent phase:
 
 | Command | Phase Emoji | Phase Name |
 |---------|-------------|------------|
-| `/sprint-status` | Chart | STATUS |
-| `/setup` | Gear | SETUP |
-| `/debug` | Bug | DEBUG |
-| `/labels-sync` | Label | LABELS |
-| `/suggest-version` | Package | VERSION |
-| `/proposal-status` | Clipboard | PROPOSALS |
-| `/test` | Flask | TEST |
-| `/rfc` | Document | RFC [Sub-Command] |
+| `/sprint-status` | 📊 Chart | STATUS |
+| `/setup` | ⚙️ Gear | SETUP |
+| `/debug` | 🐛 Bug | DEBUG |
+| `/labels-sync` | 🏷️ Label | LABELS |
+| `/suggest-version` | 📦 Package | VERSION |
+| `/proposal-status` | 📋 Clipboard | PROPOSALS |
+| `/test` | 🧪 Flask | TEST |
+| `/rfc` | 📄 Document | RFC [Sub-Command] |
 
 ---