feat(core): upgrade to v2.65.0 with Cognition Layer & Proactive Advisor

- Integrated v4.0 Operational Policy into AgentEngine and AgentExecutor.
- Added Context Amplification for policy-driven reasoning.
- Implemented Proactive Advisor for next-action decision forks.
- Added CognitionAudit diagnostics for real-time policy monitoring.
- Updated test suites to support dual-execution cognition patterns.

package.json

@@ -2,7 +2,7 @@
   "name": "astra",
   "displayName": "Astra",
   "description": "A local Jarvis-style project operating assistant for VS Code. Connects memory, project context, tools, and a single thinking-partner voice.",
-  "version": "2.64.1",
+  "version": "2.65.0",
   "publisher": "connectailab",
   "license": "MIT",
   "icon": "assets/icon.png",