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>

CHANGELOG.md

@@ -20,6 +20,7 @@ Docs: https://docs.openclaw.ai
 
 ### Added
 
+- Gateway: add `agents.create`, `agents.update`, `agents.delete` RPC methods for web UI agent management. (#11045) Thanks @advaitpaliwal.
 - Cron: run history deep-links to session chat from the dashboard. (#10776) Thanks @tyler6204.
 - Cron: per-run session keys in run log entries and default labels for cron sessions. (#10776) Thanks @tyler6204.
 - Cron: legacy payload field compatibility (`deliver`, `channel`, `to`, `bestEffortDeliver`) in schema. (#10776) Thanks @tyler6204.