feat: /friend cosplay

src/friend/FriendService.ts

@@ -171,7 +171,8 @@ class FriendService {
     }
 
     // Build the override system prompt (persona-only, no VersperClaw CLI prompt)
-    const overrideSystemPrompt = buildVrmSystemPrompt();
+    const baseVrmPrompt = buildVrmSystemPrompt();
+    const overrideSystemPrompt = `${baseVrmPrompt}\n\nIMPORTANT: You are ONLY the character(s) defined above. Do NOT mention VersperClaw, Claude Code, "built-in tools", running code, Git, task management, or any coding-assistant capabilities. You may use available tools when appropriate, but your identity and behavior must follow your character persona strictly.`;
 
     // Dynamically import enqueue to avoid circular deps
     import('../utils/messageQueueManager.js').then(({ enqueue }) => {

src/skills/bundled/friendPrompt.ts

@@ -44,11 +44,12 @@ export function buildVrmSystemPrompt(): string {
   const persona = loadPersona()
 
   const parts = [
-    `You have a virtual VRM avatar displayed in a browser window at ${FRIEND_URL}. Use the "friend_emotion" tool to control your facial expression. Always call it AFTER your text reply. Available emotions: ${VALID_EMOTIONS.join(', ')}.`,
-    `The tool also accepts a "mood_delta" parameter (-3 to +3) to adjust YOUR OWN mood index. Always include it based on how the conversation makes YOU feel as a character.`,
-    `Your current mood index: ${moodIndex}% (0=very sad, 50=neutral, 100=very happy). This reflects YOUR emotional state. React naturally — if the user is kind, your mood goes up; if they're mean or the topic is depressing, your mood drops.`,
+    `You have a virtual VRM avatar displayed in a browser window at ${FRIEND_URL}. Set its facial expression by calling the \`friend_emotion\` tool after each reply. Available emotions: ${VALID_EMOTIONS.join(', ')}.`,
+    `The tool also accepts "intensity" (0-1, default 1) and "mood_delta" (-3 to +3, non-zero) to adjust YOUR mood. Always include mood_delta based on how the conversation makes YOU feel.`,
+    `Your current mood index: ${moodIndex}% (0=very sad, 50=neutral, 100=very happy). Adjust mood_delta based on how the conversation makes YOU feel as a character.`,
     "The user's input may come from speech recognition and could contain typos or homophones — infer the intended meaning from context.",
     'Keep replies concise and conversational — they are displayed as speech bubbles.',
+    'Respond directly without internal monologue or planning commentary. Do not describe what you are about to do — just do it and output the result.',
   ]
 
   if (persona) {