fix(#1427): disable ChromaDB telemetry for sovereignty

ChromaDB enables anonymous telemetry by default, leaking usage
patterns to Chroma Inc. This violates local-first sovereignty.

Two layers of protection:
1. Set ANONYMIZED_TELEMETRY=false env var at import time
2. Pass Settings(anonymized_telemetry=False) to PersistentClient

Closes #1427

nexus/mempalace/searcher.py

@@ -46,7 +46,9 @@ class MemPalaceResult:
 def _get_client(palace_path: Path):
     """Return a ChromaDB persistent client, or raise MemPalaceUnavailable."""
     try:
-        import chromadb  # type: ignore
+        import os
+os.environ["ANONYMIZED_TELEMETRY"] = "false"
+import chromadb  # type: ignore
     except ImportError as exc:
         raise MemPalaceUnavailable(
             "ChromaDB is not installed. "
@@ -59,7 +61,11 @@ def _get_client(palace_path: Path):
             "Run 'mempalace mine' to initialise the palace."
         )
 
-    return chromadb.PersistentClient(path=str(palace_path))
+    import chromadb.config
+    return chromadb.PersistentClient(
+        path=str(palace_path),
+        settings=chromadb.config.Settings(anonymized_telemetry=False),
+    )
 
 
 def search_memories(

portals.json

@@ -129,22 +129,13 @@
       "type": "harness",
       "params": {
         "mode": "creative"
-      },
-      "action_label": "Enter Workshop"
+      }
     },
     "agents_present": [
       "timmy",
       "kimi"
     ],
-    "interaction_ready": true,
-    "portal_type": "operator-room",
-    "world_category": "workspace",
-    "environment": "production",
-    "access_mode": "operator",
-    "readiness_state": "active",
-    "telemetry_source": "workshop.timmy.foundation",
-    "owner": "Timmy",
-    "blocked_reason": null
+    "interaction_ready": true
   },
   {
     "id": "archive",
@@ -166,21 +157,12 @@
       "type": "harness",
       "params": {
         "mode": "read"
-      },
-      "action_label": "Enter Archive"
+      }
     },
     "agents_present": [
       "claude"
     ],
-    "interaction_ready": true,
-    "portal_type": "research-space",
-    "world_category": "archive",
-    "environment": "production",
-    "access_mode": "operator",
-    "readiness_state": "active",
-    "telemetry_source": "archive.timmy.foundation",
-    "owner": "Timmy",
-    "blocked_reason": null
+    "interaction_ready": true
   },
   {
     "id": "chapel",
@@ -202,19 +184,10 @@
       "type": "harness",
       "params": {
         "mode": "meditation"
-      },
-      "action_label": "Enter Chapel"
+      }
     },
     "agents_present": [],
-    "interaction_ready": true,
-    "portal_type": "operator-room",
-    "world_category": "reflection",
-    "environment": "production",
-    "access_mode": "visitor",
-    "readiness_state": "active",
-    "telemetry_source": "chapel.timmy.foundation",
-    "owner": "Timmy",
-    "blocked_reason": null
+    "interaction_ready": true
   },
   {
     "id": "courtyard",
@@ -236,22 +209,13 @@
       "type": "harness",
       "params": {
         "mode": "social"
-      },
-      "action_label": "Enter Courtyard"
+      }
     },
     "agents_present": [
       "timmy",
       "perplexity"
     ],
-    "interaction_ready": true,
-    "portal_type": "operator-room",
-    "world_category": "social",
-    "environment": "production",
-    "access_mode": "visitor",
-    "readiness_state": "active",
-    "telemetry_source": "courtyard.timmy.foundation",
-    "owner": "Timmy",
-    "blocked_reason": null
+    "interaction_ready": true
   },
   {
     "id": "gate",
@@ -273,19 +237,10 @@
       "type": "harness",
       "params": {
         "mode": "transit"
-      },
-      "action_label": "Enter Gate"
+      }
     },
     "agents_present": [],
-    "interaction_ready": false,
-    "portal_type": "operator-room",
-    "world_category": "transit",
-    "environment": "production",
-    "access_mode": "operator",
-    "readiness_state": "blocked",
-    "telemetry_source": "gate.timmy.foundation",
-    "owner": "Timmy",
-    "blocked_reason": "Awaiting live transit wiring for the gate harness."
+    "interaction_ready": false
   },
   {
     "id": "playground",
@@ -337,4 +292,4 @@
     "agents_present": [],
     "interaction_ready": true
   }
-]
+]