PLAN MODE WRITABLE DIRECTORY FEATURE REQUEST

Context: Enhancement request for Claude Code's plan mode functionality
Type: Feature Request

REQUEST SUMMARY
---------------
Add configuration option to allow file writes to specified directories during plan mode, enabling artifact-based planning workflows while maintaining code protection.

CURRENT BEHAVIOR
----------------
When plan mode is active:

• All file write operations are blocked
• User must approve actions before any files can be created
• Planning workflows that rely on document creation are disrupted

PROPOSED ENHANCEMENT
--------------------
Add configuration option such as:

plan_mode:
  allowed_write_directory: "plan/"

This would allow:

• File creation in specified directory during plan mode
• Planning documents to be created without approval gates
• Artifact-based consensus building to continue working
• Code directories to remain protected

USE CASE DESCRIPTION
--------------------
Many users have established workflow systems that depend on creating planning artifacts:

• Requirements documents (requirements.txt, requirements.md)
• Design specifications (design.txt, design.md)
• Implementation plans (plan.txt, plan.md)
• Research reports (plan/research/*.txt)

These workflows rely on document creation for:

• Shared understanding between user and AI
• Iterative refinement of plans
• Version control of planning decisions
• Reference material for implementation

PROBLEM WITH CURRENT APPROACH
------------------------------
Plan mode currently forces "phantom planning" where:

• Plans exist only in conversation until approved
• No tangible artifacts to review and refine
• Breaks established document-based workflows
• Prevents collaborative iteration on planning documents

BENEFIT OF PROPOSED SOLUTION
-----------------------------

1. Maintains Security: Code directories remain protected
2. Enables Workflows: Planning documents can be created immediately
3. Improves Review Process: Concrete artifacts to review instead of conversation abstracts
4. Preserves User Investment: Existing workflow systems continue to function
5. Flexible Configuration: Users can specify which directories are safe for planning

IMPLEMENTATION APPROACH
-----------------------

• Configuration option in user settings
• Directory path validation to ensure safety
• Clear documentation of which directories are write-enabled
• Maintains approval gates for all other file operations

ALTERNATIVE CONFIGURATIONS
---------------------------
Different users might prefer different approaches:

# Planning directory only
plan_mode.allowed_write_directory: "plan/"

# Multiple safe directories
plan_mode.allowed_write_directories: ["plan/", "docs/", ".claude/"]

# Pattern-based matching
plan_mode.allowed_write_patterns: ["plan/**", "*.md"]

COMPATIBILITY
-------------
This enhancement would:

• Not affect existing plan mode behavior for users who don't configure it
• Allow gradual adoption of artifact-based planning
• Maintain all current security protections for code directories
• Work with existing planning workflow systems

PRIORITY
--------
This feature would significantly improve plan mode usability for users with established workflow systems while maintaining the security benefits plan mode is designed to provide.