docs(iit): Add CRA Agent V3.0 development plan and update module status guide

V3.0 Plan:
- Finalize CRA Agent V3.0 development plan (replace CRA positioning)
- Add unified CRA QC platform PRD
- Add HTML UI prototype (dashboard, AI stream, eQuery, reports)
- Architecture: report-driven + LLM Tool Use + 4 semantic tools

Module Status Update:
- Update architecture from dual-brain V2.9.1 to V3.0 Tool Use
- Update DB schema inventory (5 tables -> 18 tables)
- Update code stats (577 lines -> 15,000+ lines / 61 files)
- Update next steps to V3.0 P0 roadmap
- Archive old phase plans (ReAct engine, IntentService)
- Add V3.0 document references (plan, PRD, prototype)

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-v2/src/modules/aia/styles/chat-workspace.css

@@ -951,9 +951,7 @@
 /* ============================================ */
 .message-bubble .markdown-content {
   white-space: normal;
-}
-
-.message-bubble .markdown-content p {
+}.message-bubble .markdown-content p {
   margin: 0 0 8px 0;
 }
 
@@ -1001,9 +999,7 @@
   display: list-item;
 }.message-bubble .markdown-content li::marker {
   color: #4F6EF2;
-}
-
-.message-bubble .markdown-content strong {
+}.message-bubble .markdown-content strong {
   font-weight: 700;
   color: #1F2937;
 }.message-bubble .markdown-content em {