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/.gitignore

@@ -0,0 +1,11 @@
+# Database
+*.db
+*.db-shm
+*.db-wal
+
+# Lock files
+*.lock
+
+# Temporary
+last-touched
+*.tmp