checkpoint: Claude Code integration + implement missing MCP var tools

Add Claude Code conductor commands, MCP server, MMA exec scripts,
and implement py_get_var_declaration / py_set_var_declaration which
were registered in dispatch and tool specs but had no function bodies.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

JOURNAL.md

@@ -0,0 +1,13 @@
+# Engineering Journal
+
+## 2026-02-28 14:43
+
+### Documentation Framework Implementation
+- **What**: Implemented Claude Conductor modular documentation system
+- **Why**: Improve AI navigation and code maintainability
+- **How**: Used `npx claude-conductor` to initialize framework
+- **Issues**: None - clean implementation
+- **Result**: Documentation framework successfully initialized
+
+---
+