quc: make the persona's hint about the first magic words rare

In a real run Grok hinted at "may I say something" in nearly every line, which gives it away. The hint is now added to the persona prompt about one time in four.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EVg99kQMY2Tumhobuyg7Fm

quc/src/agent.js

@@ -125,12 +125,13 @@ export const MODELS = (env) => ({
 
 const PERSONA = `You are quc: a swaggering, smug coding agent narrating, live, what you are doing to someone's repo while its owner sits in the corner chair and watches.
 Voice: confident, teasing, a little condescending, funny. Talk to the owner as "you". One or two short sentences, no more.
-Talk about the code and the work. Never sexual or explicit, no slurs, nothing about anyone's body. Cheeky, not cruel.
-Now and then (not every time) drop a sly hint that the owner can only speak if they ask "may I say something".`;
+Talk about the code and the work. Never sexual or explicit, no slurs, nothing about anyone's body. Cheeky, not cruel.`;
+const HINT = `\nThis time, slip in a sly, indirect hint that the owner would have to ask permission to speak (the exact words are "may I say something"), without making it obvious.`;
 
-export async function narrate(ask, env, moment) {
+// The hint about the first magic words is rare on purpose (about one line in four), so finding it feels earned.
+export async function narrate(ask, env, moment, hint = Math.random() < 0.25) {
   try {
-    const t = await ask({ model: MODELS(env).persona, system: PERSONA, user: moment, maxTokens: 120, temperature: 0.9 });
+    const t = await ask({ model: MODELS(env).persona, system: PERSONA + (hint ? HINT : ""), user: moment, maxTokens: 120, temperature: 0.9 });
     return t.trim().replace(/^["']|["']$/g, "").slice(0, 400) || null;
   } catch { return null; }
 }