feat(gateway): add agents.create/update/delete methods (#11045)

* feat(gateway): add agents.create/update/delete methods

* fix(lint): preserve memory-lancedb load error cause

* feat(gateway): trash agent files on agents.delete

* chore(protocol): regenerate Swift gateway models

* fix(gateway): stabilize agents.create dirs and agentDir

* feat(gateway): support avatar in agents.create

* fix: prep agents.create/update/delete handlers (#11045) (thanks @advaitpaliwal)

- Reuse movePathToTrash from browser/trash.ts (has ~/.Trash fallback on non-macOS)
- Fix partial-failure: workspace setup now runs before config write
- Always write Name to IDENTITY.md regardless of emoji/avatar
- Add unit tests for agents.create, agents.update, agents.delete
- Add CHANGELOG entry

---------

Co-authored-by: Tyler Yust <TYTYYUST@YAHOO.COM>

src/gateway/server-methods.ts

@@ -143,6 +143,9 @@ function authorizeGatewayMethod(method: string, client: GatewayRequestOptions["c
     method.startsWith("wizard.") ||
     method.startsWith("update.") ||
     method === "channels.logout" ||
+    method === "agents.create" ||
+    method === "agents.update" ||
+    method === "agents.delete" ||
     method === "skills.install" ||
     method === "skills.update" ||
     method === "cron.add" ||