feat: add home_node support to Citizens API and UI

- Add HomeNodeView model to city-service
- Update get_public_citizens and get_public_citizen_by_slug to JOIN node_cache
- Add HomeNode interface to frontend types
- Display node badge on citizen cards
- Show full home_node info on citizen profile page

services/city-service/models_city.py

@@ -191,6 +191,15 @@ class CityPresenceView(BaseModel):
     rooms: List[CityPresenceRoomView] = []
 
 
+class HomeNodeView(BaseModel):
+    """Home node information for agent/citizen"""
+    id: Optional[str] = None
+    name: Optional[str] = None
+    hostname: Optional[str] = None
+    roles: List[str] = []
+    environment: Optional[str] = None
+
+
 class PublicCitizenSummary(BaseModel):
     slug: str
     display_name: str
@@ -203,6 +212,8 @@ class PublicCitizenSummary(BaseModel):
     public_skills: List[str] = []
     online_status: Optional[str] = "unknown"
     status: Optional[str] = None  # backward compatibility
+    # Home node info
+    home_node: Optional[HomeNodeView] = None
 
 
 class PublicCitizenProfile(BaseModel):
@@ -222,6 +233,8 @@ class PublicCitizenProfile(BaseModel):
     metrics_public: Dict[str, Any]
     admin_panel_url: Optional[str] = None
     microdao: Optional[Dict[str, Any]] = None
+    # Home node info
+    home_node: Optional[HomeNodeView] = None
 
 
 class CitizenInteractionInfo(BaseModel):

services/city-service/repo_city.py

@@ -606,8 +606,14 @@ async def get_public_citizens(
             a.public_primary_room_slug,
             COALESCE(a.public_skills, ARRAY[]::text[]) AS public_skills,
             COALESCE(a.status, 'unknown') AS status,
+            a.node_id,
+            nc.node_name AS home_node_name,
+            nc.hostname AS home_node_hostname,
+            nc.roles AS home_node_roles,
+            nc.environment AS home_node_environment,
             COUNT(*) OVER() AS total_count
         FROM agents a
+        LEFT JOIN node_cache nc ON a.node_id = nc.node_id
         WHERE {where_sql}
         ORDER BY a.display_name
         LIMIT ${len(params) + 1} OFFSET ${len(params) + 2}
@@ -627,6 +633,20 @@ async def get_public_citizens(
         data.pop("total_count", None)
         data["public_skills"] = list(data.get("public_skills") or [])
         data["online_status"] = data.get("status") or "unknown"
+        # Build home_node object
+        if data.get("node_id"):
+            data["home_node"] = {
+                "id": data.get("node_id"),
+                "name": data.get("home_node_name"),
+                "hostname": data.get("home_node_hostname"),
+                "roles": list(data.get("home_node_roles") or []),
+                "environment": data.get("home_node_environment")
+            }
+        else:
+            data["home_node"] = None
+        # Clean up intermediate fields
+        for key in ["home_node_name", "home_node_hostname", "home_node_roles", "home_node_environment"]:
+            data.pop(key, None)
         items.append(data)
     
     return items, total
@@ -700,8 +720,13 @@ async def get_public_citizen_by_slug(slug: str) -> Optional[dict]:
             COALESCE(a.public_skills, ARRAY[]::text[]) AS public_skills,
             a.public_district,
             a.public_primary_room_slug,
-            a.primary_room_slug
+            a.primary_room_slug,
+            nc.node_name AS home_node_name,
+            nc.hostname AS home_node_hostname,
+            nc.roles AS home_node_roles,
+            nc.environment AS home_node_environment
         FROM agents a
+        LEFT JOIN node_cache nc ON a.node_id = nc.node_id
         WHERE a.public_slug = $1
           AND a.is_public = true
         LIMIT 1
@@ -714,6 +739,17 @@ async def get_public_citizen_by_slug(slug: str) -> Optional[dict]:
     agent = dict(agent_row)
     agent["public_skills"] = list(agent.get("public_skills") or [])
     
+    # Build home_node object
+    home_node = None
+    if agent.get("node_id"):
+        home_node = {
+            "id": agent.get("node_id"),
+            "name": agent.get("home_node_name"),
+            "hostname": agent.get("home_node_hostname"),
+            "roles": list(agent.get("home_node_roles") or []),
+            "environment": agent.get("home_node_environment")
+        }
+    
     rooms = await get_agent_rooms(agent["id"])
     primary_room = agent.get("public_primary_room_slug") or agent.get("primary_room_slug")
     city_presence = {
@@ -765,7 +801,8 @@ async def get_public_citizen_by_slug(slug: str) -> Optional[dict]:
         "interaction": interaction,
         "metrics_public": metrics_public,
         "microdao": microdao,
-        "admin_panel_url": f"/agents/{agent['id']}"
+        "admin_panel_url": f"/agents/{agent['id']}",
+        "home_node": home_node
     }