feat: added capability for clawdbot to react

src/agents/system-prompt.ts

@@ -43,6 +43,11 @@ export function buildAgentSystemPrompt(params: {
       defaultLevel: "on" | "off";
     };
   };
+  /** Reaction guidance for the agent (for Telegram minimal/extensive modes). */
+  reactionGuidance?: {
+    level: "minimal" | "extensive";
+    channel: string;
+  };
 }) {
   const coreToolSummaries: Record<string, string> = {
     read: "Read file contents",
@@ -351,6 +356,29 @@ export function buildAgentSystemPrompt(params: {
   if (extraSystemPrompt) {
     lines.push("## Group Chat Context", extraSystemPrompt, "");
   }
+  if (params.reactionGuidance) {
+    const { level, channel } = params.reactionGuidance;
+    const guidanceText =
+      level === "minimal"
+        ? [
+            `Reactions are enabled for ${channel} in MINIMAL mode.`,
+            "React ONLY when truly relevant:",
+            "- Acknowledge important user requests or confirmations",
+            "- Express genuine sentiment (humor, appreciation) sparingly",
+            "- Avoid reacting to routine messages or your own replies",
+            "Guideline: at most 1 reaction per 5-10 exchanges.",
+          ].join("\n")
+        : [
+            `Reactions are enabled for ${channel} in EXTENSIVE mode.`,
+            "Feel free to react liberally:",
+            "- Acknowledge messages with appropriate emojis",
+            "- Express sentiment and personality through reactions",
+            "- React to interesting content, humor, or notable events",
+            "- Use reactions to confirm understanding or agreement",
+            "Guideline: react whenever it feels natural.",
+          ].join("\n");
+    lines.push("## Reactions", guidanceText, "");
+  }
   if (reasoningHint) {
     lines.push("## Reasoning Format", reasoningHint, "");
   }