feat(web,core,server,docs,skills): avatar update tooltip, DeepSeek-first model catalog, temporary-workspace wording (#224)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/server/src/api/types.ts

@@ -391,7 +391,7 @@ export interface DefaultModelResponse {
 export interface ChatDefaultsDto {
   /** Preselected Agent; must reference an existing Agent of the Project (400 unknown_agent). */
   agentId?: string;
-  /** Prefilled Workspace directory; absent/empty = auto temp directory. */
+  /** Prefilled Workspace directory; absent/empty = a temporary workspace. */
   workspace?: string;
   /** Prefilled approval mode; absent = the built-in "allow-all". */
   approvalMode?: ApprovalMode;