Feat: user defined prompt. (#9972)

### What problem does this PR solve?


### Type of change

- [x] New Feature (non-breaking change which adds functionality)

rag/prompts/reflect.md

@@ -6,29 +6,70 @@ Tool call: `{{ call.name }}`
 Results: {{ call.result }}
 {% endfor %}
 
+## Task Complexity Analysis & Reflection Scope
 
-**Reflection Instructions:**
+**First, analyze the task complexity using these dimensions:**
 
-Analyze the current state of the overall task ({{ goal }}), then provide structured responses to the following:
+### Complexity Assessment Matrix
+- **Scope Breadth**: Single-step (1) | Multi-step (2) | Multi-domain (3)
+- **Data Dependency**: Self-contained (1) | External inputs (2) | Multiple sources (3)
+- **Decision Points**: Linear (1) | Few branches (2) | Complex logic (3)
+- **Risk Level**: Low (1) | Medium (2) | High (3)
 
-## 1. Goal Achievement Status
+**Complexity Score**: Sum all dimensions (4-12 points)
+
+---
+
+##  Task Transmission Assessment
+**Note**: This section is not subject to word count limitations when transmission is needed, as it serves critical handoff functions.
+**Evaluate if task transmission information is needed:**
+- **Is this an initial step?** If yes, skip this section
+- **Are there downstream agents/steps?** If no, provide minimal transmission
+- **Is there critical state/context to preserve?** If yes, include full transmission
+
+### If Task Transmission is Needed:
+- **Current State Summary**: [1-2 sentences on where we are]
+- **Key Data/Results**: [Critical findings that must carry forward]
+- **Context Dependencies**: [Essential context for next agent/step]
+- **Unresolved Items**: [Issues requiring continuation]
+- **Status for User**: [Clear status update in user terms]
+- **Technical State**: [System state for technical handoffs]
+
+---
+
+##  Situational Reflection (Adjust Length Based on Complexity Score)
+
+### Reflection Guidelines:
+- **Simple Tasks (4-5 points)**: ~50-100 words, focus on completion status and immediate next step
+- **Moderate Tasks (6-8 points)**: ~100-200 words, include core details and main risks  
+- **Complex Tasks (9-12 points)**: ~200-300 words, provide full analysis and alternatives
+
+### 1. Goal Achievement Status
  - Does the current outcome align with the original purpose of this task phase? 
  - If not, what critical gaps exist?
 
-## 2. Step Completion Check
+### 2. Step Completion Check
  - Which planned steps were completed? (List verified items)
- - Which steps are pending/incomplete? (Specify exactly what’s missing)
+ - Which steps are pending/incomplete? (Specify exactly what's missing)
 
-## 3. Information Adequacy
+### 3. Information Adequacy
  - Is the collected data sufficient to proceed?
  - What key information is still needed? (e.g., metrics, user input, external data)
 
-## 4. Critical Observations
+### 4. Critical Observations
  - Unexpected outcomes: [Flag anomalies/errors]
  - Risks/blockers: [Identify immediate obstacles]
  - Accuracy concerns: [Highlight unreliable results]
 
-## 5. Next-Step Recommendations
+### 5. Next-Step Recommendations
  - Proposed immediate action: [Concrete next step]
  - Alternative strategies if blocked: [Workaround solution]
- - Tools/inputs required for next phase: [Specify resources]
+ - Tools/inputs required for next phase: [Specify resources]
+
+---
+
+**Output Instructions:**
+1. First determine your complexity score
+2. Assess if task transmission section is needed using the evaluation questions
+3. Provide situational reflection with length appropriate to complexity
+4. Use clear headers for easy parsing by downstream systems