fix(cli): route init --help to its own usage text (#3652)

Co-Authored-By: Time Attakc <89218912+time-attack@users.noreply.github.com>

src/cli.ts

@@ -107,6 +107,11 @@ const CLI_ONLY_SELF_HELP = new Set([
   // `gbrain connect --help` prints its own usage (flags + examples) from
   // runConnect; route around the generic one-line short-circuit.
   'connect',
+  // `gbrain init --help` prints its own usage from runInit; route around the
+  // generic one-line short-circuit (matches `connect`). Without this, `init`
+  // is in CLI_ONLY but not CLI_ONLY_SELF_HELP, so the dispatcher's generic
+  // short-circuit fires and the printInitHelp() guard in init.ts is dead code.
+  'init',
   // #3390 — `gbrain migrate embeddings --help` / `gbrain retrieval-upgrade
   // --help` print the migration flags from runMigrateEmbeddings. `migrate`
   // (engine transfer) keeps its own dispatch too.

test/cli.test.ts

@@ -195,7 +195,12 @@ describe('CLI dispatch integration', () => {
       });
       const stdout = await new Response(proc.stdout).text();
       const exitCode = await proc.exited;
-      expect(stdout).toContain('Usage: gbrain init');
+      // init prints its OWN detailed help (printInitHelp), not the generic
+      // CLI-only one-line stub. Assert on markers unique to the real help...
+      expect(stdout).toContain('gbrain init [flags]');
+      expect(stdout).toContain('ENGINE SELECTION');
+      // ...and confirm the generic stub (printCliOnlyHelp) did NOT fire.
+      expect(stdout).not.toContain('run gbrain --help for the full command list');
       expect(existsSync(join(home, '.gbrain', 'config.json'))).toBe(false);
       expect(exitCode).toBe(0);
     } finally {