feat(agents): implement Code Commander module (Phases 1-5)

- Phase 1: Infrastructure (state, prompts, registry)
- Phase 2: Execution engine (AI adapters, security classifier, executors)
- Phase 3: Agent integration (graph nodes, routing)
- Phase 4: Streaming interaction (PTY terminal, WebSocket)
- Phase 5: Frontend integration (Vue components)

backend/app/agents/registry/builtins.py

@@ -29,6 +29,7 @@ TOP_LEVEL_AGENT_DEFAULT_SUB_COMMANDERS: dict[str, tuple[str, ...]] = {
         "analyst_progress",
         "analyst_insights",
     ),
+    AgentRole.CODE_COMMANDER.value: (),
 }
 
 TOP_LEVEL_AGENT_DISPLAY_NAMES: dict[str, str] = {
@@ -37,6 +38,7 @@ TOP_LEVEL_AGENT_DISPLAY_NAMES: dict[str, str] = {
     AgentRole.EXECUTOR.value: "Executor",
     AgentRole.LIBRARIAN.value: "Librarian",
     AgentRole.ANALYST.value: "Analyst",
+    AgentRole.CODE_COMMANDER.value: "Code Commander",
 }
 
 TOP_LEVEL_AGENT_ROUTING_HINTS: dict[str, tuple[str, ...]] = {
@@ -55,6 +57,9 @@ TOP_LEVEL_AGENT_ROUTING_HINTS: dict[str, tuple[str, ...]] = {
     AgentRole.ANALYST.value: (
         "Handle reporting and insight requests using analyst sub-commanders.",
     ),
+    AgentRole.CODE_COMMANDER.value: (
+        "Handle code writing and execution tasks using AI CLI adapters.",
+    ),
 }
 
 TOP_LEVEL_AGENT_ALLOWED_SPAWN_ROLES: dict[str, tuple[str, ...]] = {
@@ -63,11 +68,13 @@ TOP_LEVEL_AGENT_ALLOWED_SPAWN_ROLES: dict[str, tuple[str, ...]] = {
         AgentRole.EXECUTOR.value,
         AgentRole.LIBRARIAN.value,
         AgentRole.ANALYST.value,
+        AgentRole.CODE_COMMANDER.value,
     ),
     AgentRole.SCHEDULE_PLANNER.value: (AgentRole.SCHEDULE_PLANNER.value,),
     AgentRole.EXECUTOR.value: (AgentRole.EXECUTOR.value,),
     AgentRole.LIBRARIAN.value: (AgentRole.LIBRARIAN.value,),
     AgentRole.ANALYST.value: (AgentRole.ANALYST.value,),
+    AgentRole.CODE_COMMANDER.value: (),
 }
 
 SUB_COMMANDER_PARENT_AGENT_IDS: dict[str, str] = {
@@ -99,11 +106,7 @@ BUILTIN_AGENT_MANIFESTS: tuple[AgentManifest, ...] = tuple(
 
 
 _capability_tool_names = tuple(
-    dict.fromkeys(
-        tool.name
-        for tools in SUB_COMMANDER_TOOLSETS.values()
-        for tool in tools
-    )
+    dict.fromkeys(tool.name for tools in SUB_COMMANDER_TOOLSETS.values() for tool in tools)
 )
 
 _CAPABILITY_METADATA_BY_TOOL_NAME: dict[str, dict[str, object]] = {
@@ -260,9 +263,7 @@ BUILTIN_SUB_COMMANDER_MANIFESTS: tuple[SubCommanderManifest, ...] = tuple(
         sub_commander_id=sub_commander_id,
         parent_agent_id=SUB_COMMANDER_PARENT_AGENT_IDS[sub_commander_id],
         prompt_text=SUB_COMMANDER_PROMPTS_BY_KEY[sub_commander_id],
-        capability_ids=list(
-            dict.fromkeys(tool.name for tool in tools)
-        ),
+        capability_ids=list(dict.fromkeys(tool.name for tool in tools)),
     )
     for sub_commander_id, tools in SUB_COMMANDER_TOOLSETS.items()
 )