feat(grokbuild): add first-class Grok Build support (#5453)

* feat(grokbuild): add backend integration

* feat(grokbuild): add provider and management UI

* test(grokbuild): cover configuration and integrations

* fix(grokbuild): address backend review feedback

* fix(grokbuild): complete UI review feedback

* feat(grokbuild): add CLI lifecycle management

* fix(grokbuild): align provider icon fallback

* test(grokbuild): cover provider icon persistence

src/types/proxy.ts

@@ -46,6 +46,7 @@ export interface ProxyTakeoverStatus {
   "claude-desktop"?: boolean;
   codex: boolean;
   gemini: boolean;
+  grokbuild: boolean;
   opencode: boolean;
   openclaw: boolean;
   hermes: boolean;

src/types/usage.ts

@@ -172,7 +172,7 @@ export interface UsageRangeSelection {
  * `opencode` / `openclaw` / `hermes` have no proxy handler at all — they
  * appear only as managed apps elsewhere.
  */
-export type AppType = "claude" | "codex" | "gemini" | "opencode";
+export type AppType = "claude" | "codex" | "gemini" | "grokbuild" | "opencode";
 
 export type AppTypeFilter = "all" | AppType;
 
@@ -180,6 +180,7 @@ export const KNOWN_APP_TYPES: ReadonlyArray<AppType> = [
   "claude",
   "codex",
   "gemini",
+  "grokbuild",
   "opencode",
 ];
 
@@ -198,6 +199,7 @@ export const KNOWN_APP_TYPES: ReadonlyArray<AppType> = [
 export const CACHE_INCLUSIVE_APP_TYPES: ReadonlySet<string> = new Set([
   "codex",
   "gemini",
+  "grokbuild",
 ]);
 
 /** Subset of request-log fields needed to derive cache-normalized input. */