feat(FN-3396): bundle Cursor CLI as a plugin provider with dashboard auth w

Merges FN-3396's full Cursor CLI provider integration (Steps 1–4): defines a CLI-backed provider contract, adds the `fusion-plugin-cursor-runtime` plugin package with process management and runtime probes, wires dashboard auth flows and UI (ProviderCard, onboarding modal, settings), and bundles the

Fusion-Task-Id: FN-3396

packages/cli/tsup.config.ts

@@ -12,6 +12,7 @@ const RUNTIME_PLUGIN_IDS = [
   "fusion-plugin-hermes-runtime",
   "fusion-plugin-openclaw-runtime",
   "fusion-plugin-paperclip-runtime",
+  "fusion-plugin-cursor-runtime",
 ] as const;
 
 const __dirname = dirname(fileURLToPath(import.meta.url));