docs: initial Mission Control planning documents

- PLAN.md: Complete implementation plan with architecture, ACs, phases
- CLAUDE.md: Project context for AI agents

Architecture: Tauri + React, beads as universal work graph,
manual-first priority with rich decision logging.

.beads/metadata.json

@@ -0,0 +1,4 @@
+{
+  "database": "beads.db",
+  "jsonl_export": "issues.jsonl"
+}