👤 feat: Agent Avatar Removal and Decouple upload/reset from Agent Updates (#10527)

* ✨ feat: Enhance agent avatar management with upload and reset functionality

* ✨ feat: Refactor AvatarMenu to use DropdownPopup for improved UI and functionality

* ✨ feat: Improve avatar upload handling in AgentPanel to suppress misleading "no changes" toast

* ✨ feat: Refactor toast message handling and payload composition in AgentPanel for improved clarity and functionality

* ✨ feat: Enhance agent avatar functionality with upload, reset, and validation improvements

* ✨ feat: Refactor agent avatar upload handling and enhance related components for improved functionality and user experience

* feat(agents): tighten ACL, harden GETs/search, and sanitize action metadata
stop persisting refreshed S3 URLs on GET; compute per-response only
enforce ACL EDIT on revert route; remove legacy admin/author/collab checks
sanitize action metadata before persisting during duplication (api_key, oauth_client_id, oauth_client_secret)
escape user search input, cap length (100), and use Set for public flag mapping
add explicit req.file guard in avatar upload; fix empty catch lint; remove unused imports

* feat: Remove outdated avatar-related translation keys

* feat: Improve error logging for avatar updates and streamline file input handling

* feat(agents): implement caching for S3 avatar refresh in agent list responses

* fix: replace unconventional 'void e' with explicit comment to clarify intentionally ignored error

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* feat(agents): enhance avatar handling and improve search functionality

* fix: clarify intentionally ignored error in agent list handler

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

client/src/utils/forms.tsx

@@ -52,6 +52,9 @@ export const getDefaultAgentFormValues = () => ({
   ...defaultAgentFormValues,
   model: localStorage.getItem(LocalStorageKeys.LAST_AGENT_MODEL) ?? '',
   provider: createProviderOption(localStorage.getItem(LocalStorageKeys.LAST_AGENT_PROVIDER) ?? ''),
+  avatar_file: null,
+  avatar_preview: '',
+  avatar_action: null,
 });
 
 export const processAgentOption = ({