feat: use workspace identity for telemetry (#2371)

Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>

src/langbot/pkg/workspace/identity.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+import uuid
+
+
+_INSTANCE_PREFIX = "instance_"
+_WORKSPACE_IDENTITY_NAMESPACE = uuid.UUID("8ea04f29-8528-4cc3-bb28-30a838c89d76")
+
+
+def workspace_uuid_from_instance_id(instance_id: str) -> str:
+    """Return the stable OSS Workspace UUID for a persisted instance identity."""
+    value = instance_id.strip()
+    if not value:
+        raise ValueError("LangBot instance identity is empty")
+
+    candidate = value[len(_INSTANCE_PREFIX) :] if value.startswith(_INSTANCE_PREFIX) else value
+    try:
+        return str(uuid.UUID(candidate))
+    except ValueError:
+        return str(uuid.uuid5(_WORKSPACE_IDENTITY_NAMESPACE, value))

src/langbot/pkg/workspace/service.py

@@ -30,6 +30,7 @@ from .errors import (
     WorkspaceOwnerAlreadyExistsError,
 )
 from .entities import WorkspaceExecutionBinding
+from .identity import workspace_uuid_from_instance_id
 from .policy import CloudWorkspacePolicy, SingleWorkspacePolicy
 from .repository import WorkspaceRepository
 
@@ -497,7 +498,7 @@ class WorkspaceService:
         created_by_account_uuid: str | None = None,
     ) -> Workspace:
         return Workspace(
-            uuid=str(uuid.uuid4()),
+            uuid=workspace_uuid_from_instance_id(self.instance_uuid),
             instance_uuid=self.instance_uuid,
             name=name,
             slug=slug,