feat(runtime): forward Flynn prompt to pi and harden backend mode commands

src/commands/builtin/index.test.ts

@@ -343,6 +343,11 @@ describe('builtin /skill command', () => {
 });
 
 describe('builtin /backend command', () => {
+  it('registers /runtime as an alias', () => {
+    const cmd = createBackendCommand();
+    expect(cmd.aliases).toContain('runtime');
+  });
+
   it('passes subcommand input to backendCommand service', async () => {
     const cmd = createBackendCommand();
     const backendCommand = vi.fn(() => 'Pi backend deactivated.');

src/commands/builtin/index.ts

@@ -359,7 +359,8 @@ export function createSkillCommand(): CommandDefinition {
 export function createBackendCommand(): CommandDefinition {
   return {
     name: 'backend',
-    description: 'Inspect or control runtime backend mode (status, activate pi, deactivate pi)',
+    aliases: ['runtime'],
+    description: 'Inspect or control runtime backend mode (status, activate pi, deactivate pi, use config)',
     execute: async (args, ctx) => {
       if (!ctx.services?.backendCommand) {
         return notAvailable('Backend command');