fix: refine system prompts to enforce physical actions and single-sentence output while adding repetition detection for model responses

app.py

@@ -83,7 +83,7 @@ async def generate_atomic_task(goal: str, previous_failures: int, history: list
         if previous_failures > 0 and rejected_task:
             print(f"TASK WAS REJECTED ('{rejected_task}'). ROUTING TO MINICPM FOR SUB-STEP BREAKDOWN...", flush=True)
             messages = [
-                {"role": "system", "content": "You are a cognitive pacemaker. When a task is too hard, break it down into a single, even simpler, tiny physical starting action under 8 words. Return ONLY the starting action."},
+                {"role": "system", "content": "You are a cognitive pacemaker. When a task is too hard, break it down into a single, even simpler, tiny physical starting action under 8 words. Return ONLY the starting action. CRITICAL: Focus strictly on the physical movement. Do NOT suggest thinking, planning, or remembering."},
                 {"role": "user", "content": f"The task '{rejected_task}' was too hard. Break it down into a single, even simpler physical starting action."}
             ]
             fallback_res = await run_blocking(
@@ -131,11 +131,13 @@ async def generate_atomic_task(goal: str, previous_failures: int, history: list
                     content = line
                     break
         
-        # Check if output is empty
+        # Check if output is empty or a repetition
         is_invalid = not content
+        if content and history and content.strip().lower() == history[-1].strip().lower():
+            is_invalid = True
         
         if is_invalid:
-            print(f"NEMOTRON OUTPUT INVALID ('{raw_content}'). FALLING BACK TO MINICPM...", flush=True)
+            print(f"NEMOTRON OUTPUT INVALID OR REPETITION ('{raw_content}'). FALLING BACK TO MINICPM...", flush=True)
             messages = [
                 {"role": "system", "content": "You are a cognitive pacemaker. Focus strictly on the physical goal and break it down into an extremely tiny, atomic physical action under 8 words. Ignore mental blocks or feelings of being stuck and output ONLY the single physical action step."},
                 {"role": "user", "content": f"Goal: {goal}\nCompleted Tasks: {history_str}\nFailures: {previous_failures}\nOutput the NEXT step."}
@@ -174,7 +176,7 @@ async def apply_activation_style(task: str, style="direct") -> str:
                 "RULES:\n"
                 "1. Keep it as an action/command the user MUST do now. Start or end with an encouraging phrase like 'You got this!', 'Let's do it!', or 'Go ahead and...'.\n"
                 "2. Do NOT write in the past tense, do NOT congratulate the user, and do NOT treat the task as already completed.\n"
-                "3. Keep it brief (under 12 words) and output ONLY the final rewritten task."
+                "3. Limit your response to EXACTLY ONE short sentence (under 12 words) and output ONLY the final rewritten task."
             )
         elif style == "calm":
             system_prompt = (
@@ -182,7 +184,7 @@ async def apply_activation_style(task: str, style="direct") -> str:
                 "RULES:\n"
                 "1. Keep it as an action/command. Use gentle prefixes like 'When you are ready, ...' or 'Take your time and ...'.\n"
                 "2. Do NOT write in the past tense and do NOT congratulate the user.\n"
-                "3. Keep it brief (under 12 words) and output ONLY the final rewritten task."
+                "3. Limit your response to EXACTLY ONE short sentence (under 12 words) and output ONLY the final rewritten task."
             )
         else:
             system_prompt = (
@@ -190,7 +192,7 @@ async def apply_activation_style(task: str, style="direct") -> str:
                 "RULES:\n"
                 "1. Keep it as an action/command the user MUST do now.\n"
                 "2. Do NOT write in the past tense, do NOT congratulate the user, and do NOT treat the task as already completed.\n"
-                "3. Keep it brief (under 12 words) and output ONLY the final rewritten task."
+                "3. Limit your response to EXACTLY ONE short sentence (under 12 words) and output ONLY the final rewritten task."
             )
 
         messages = [