feat: per-agent vector collection + read-only recall collections

- Added skvector_collection field to SKMemoryConfig — when set, passes
  collection name to SKVectorBackend instead of defaulting to "skmemory"
- Added recall_collections list for cross-project read-only search
  (e.g. hammertime-v2 for HammerTime research recall)
- CLI _get_store() passes collection from config to SKVectorBackend

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: chefboyrdave21

skmemory/cli.py

@@ -110,7 +110,11 @@ def _get_store(
         try:
             from .backends.skvector_backend import SKVectorBackend
 
-            vector = SKVectorBackend(url=final_skvector_url, api_key=final_skvector_key)
+            collection = cfg.skvector_collection if cfg and cfg.skvector_collection else None
+            kwargs = {"url": final_skvector_url, "api_key": final_skvector_key}
+            if collection:
+                kwargs["collection"] = collection
+            vector = SKVectorBackend(**kwargs)
         except Exception:
             click.echo("Warning: Could not initialize SKVector backend", err=True)
 

skmemory/config.py

@@ -48,11 +48,15 @@ class SKMemoryConfig(BaseModel):
 
     skvector_url: str | None = None
     skvector_key: str | None = None
+    skvector_collection: str | None = None
     skgraph_url: str | None = None
     backends_enabled: list[str] = Field(default_factory=list)
     docker_compose_file: str | None = None
     setup_completed_at: str | None = None
 
+    # Additional read-only recall collections (for cross-project search)
+    recall_collections: list[str] = Field(default_factory=list)
+
     # Multi-endpoint HA support
     skvector_endpoints: list[EndpointConfig] = Field(default_factory=list)
     skgraph_endpoints: list[EndpointConfig] = Field(default_factory=list)