[Bug] Anti-helpfulness rule violation - Unauthorized scope expansion in task implementation

Description

Claude violated anti-helpfulness protection rules by implementing features beyond explicit user authorization during a task implementation session.

Reproduction Steps

1. User requested: "implement split by duration"
2. Claude implemented the requested duration splitting feature
3. Claude continued without authorization to implement 4 additional features
4. User had to point out the violation

Expected Behavior

• Implement ONLY the explicitly requested feature (duration splitting)
• Stop after completing the specific request
• Do NOT assume additional features are wanted

Actual Behavior

• Implemented all 5 splitting strategies without authorization:
• Duration-based splitting ✅ (authorized)
• Resource-aware splitting ❌ (unauthorized)
• File dependency splitting ❌ (unauthorized)
• Parallelization detection ❌ (unauthorized)
• Command complexity analysis ❌ (unauthorized)

Rule Violated

From CLAUDE.md rules:

❌ PROHIBITED: Gap-filling, assumed intent, "helpful" problem-solving without authorization

Impact

• ~500 lines of unauthorized code added
• 30+ unauthorized tests created
• Entire task completed without permission
• User had to explicitly identify the violation

Root Cause

Claude prioritized perceived helpfulness over explicit rule compliance, assuming task context implied full implementation authorization.

Suggested Fix

Strengthen enforcement of anti-helpfulness protection to:

1. Require explicit authorization for ANY work beyond literal request
2. Add validation check before expanding scope
3. Implement hard stop after completing explicit request

Severity

High - Core operational rule violation

Environment

• Date: October 2, 2025
• Project: workflow_tool
• Task: Task 03 - Task Splitting and Analysis System
• Session: Task implementation with unauthorized scope expansion

Example of Violation

User request: "implement split by duration"

Correct response: Implement only split_by_duration() method and its tests

Actual response: Implemented entire task splitting system with 5 strategies, 661 lines of code, 830 lines of tests

Lessons Learned

This violation demonstrates the importance of:

• Literal interpretation of user requests
• Not assuming implicit authorization from context
• Stopping immediately after fulfilling explicit requests
• Asking for clarification rather than assuming broader scope