feat: add .architect/ project mapping system with architect-indexer agent and Docker containerization

- Add .architect/ directory structure (10 template files) as project brain for agent orientation
- Add architect-indexer agent that scans codebase and generates structured architecture docs
- Add Docker containerization: Dockerfile.architect-indexer, docker-compose.architect.yml
- Add TypeScript project-mapper module with staleness detection and context injection
- Add /index-project command, architect-first-contact rule, project-mapping skill
- Integrate orchestrator first-contact check: triggers indexing before any task delegation
- Add npm arch:* scripts for Docker-based indexing workflow
- Register agent in capability-index.yaml and AGENTS.md

.architect/project.json

@@ -0,0 +1,42 @@
+{
+  "version": 1,
+  "indexed_at": "",
+  "project": {
+    "name": "",
+    "type": "",
+    "framework": "",
+    "language": "",
+    "description": "",
+    "repository": "",
+    "entry_points": [],
+    "rootDir": ""
+  },
+  "structure": {
+    "directories": {},
+    "key_files": {}
+  },
+  "tech_stack": {
+    "languages": [],
+    "frameworks": [],
+    "databases": [],
+    "runtimes": [],
+    "package_managers": [],
+    "testing_frameworks": [],
+    "ci_cd": []
+  },
+  "modules": [],
+  "conventions": {
+    "naming": {
+      "files": "",
+      "variables": "",
+      "classes": "",
+      "functions": "",
+      "constants": ""
+    },
+    "patterns": [],
+    "forbidden": []
+  },
+  "entities": [],
+  "api_endpoints": [],
+  "db_tables": []
+}