fix: improve stuck detection to detect same tool repeated

- Previous fix required EXACT same tool call signature (including arguments)
- Bot was stuck reading file in sections with different line numbers
- New logic: detect stuck if SAME TOOL is called repeatedly (arguments may vary)
- Extract tool name from signature and check if all recent calls use same tool
- Still requires 3+ repetitions before triggering intervention

This fixes the infinite loop bug when bot tries to read large files in sections.

Example:
  - Before: bash:read:1-100, bash:read:101-200, bash:read:201-300 (different signatures) → not stuck
  - After: bash:read:1-100, bash:read:101-200, bash:read:201-300 (same tool, different args) → stuck!

src/bot/index.js

@@ -514,11 +514,24 @@ export async function initBot(config, api, tools, skills, agents) {
       // Hash: tool name + first 80 chars of args (enough to detect repeated patterns)
       return `${fn.name}:${args.slice(0, 80)}`;
     };
-    const isStuck = () => {
+  const isStuck = () => {
-      if (callHistory.length < STUCK_THRESHOLD) return false;
+    if (callHistory.length < STUCK_THRESHOLD) return false;
-      const recent = callHistory.slice(-STUCK_THRESHOLD);
+    const recent = callHistory.slice(-STUCK_THRESHOLD);
-      return recent.every(s => s === recent[0]);
+    
-    };
+    // Flexible: detect stuck even if arguments vary slightly
+    // Extract tool name from signature (everything before first colon)
+    const toolNames = recent.map(s => s.split(':')[0]);
+    const uniqueToolNames = [...new Set(toolNames)];
+    
+    // If all calls use the same tool, check if they differ by arguments
+    if (uniqueToolNames.length === 1) {
+      // Same tool, different arguments → still stuck
+      return true;
+    }
+    
+    // Different tools → not stuck
+    return false;
+  };
 
     // Context compaction: trim old tool results to keep context manageable
     const compactContext = () => {