feat: add main features

Agents for developpement added + frontend add + backend added. Git viewer created + agent and template creator + layout and project creator

frontend/src/features/first-run/index.ts

@@ -0,0 +1,19 @@
+/**
+ * First-run & AI-profiles feature (L5). Public surface: the wizard, the settings
+ * panel, the view-model hook, and the pure profile helpers.
+ */
+
+export { FirstRunWizard } from "./FirstRunWizard";
+export { ProfilesSettings } from "./ProfilesSettings";
+export { useFirstRun, type FirstRunViewModel, type WizardEntry } from "./useFirstRun";
+export {
+  validateProfile,
+  isProfileValid,
+  isRelativeSafe,
+  isValidEnvVar,
+  defaultInjection,
+  emptyCustomProfile,
+  newProfileId,
+  parseArgs,
+  type ProfileErrors,
+} from "./profile";