Update PRP Template to v2 with Pre-Write Validation and Enhanced Structure

[Krigsexe]

This pull request updates the PRPs/templates/prp_base.md file to version 2, introducing significant improvements to the Product Requirements Prompt (PRP) template for AI-driven development. The changes align with the strict reliability requirements (0% regression, 0% logical errors, mandatory documentation) and enhance the template's usability for context-rich AI coding tasks.

Changes

• Added a Pre-Write Validation section to enforce:
  • Verification of file existence before modification (e.g., halt with error if src/existing_module.py is missing).
  • Integrity checks for project conventions (e.g., file length < 500 lines, relative imports).
  • Linter execution (ruff check) to catch style/syntax errors before changes.
  • Validation of referenced examples (e.g., examples/web_scraper.py) for consistency.
• Enhanced the template structure with:
  • Detailed sections for data models, task lists, and integration points.
  • Clearer context specification (e.g., documentation references, codebase tree).
  • Improved validation loops (syntax, unit tests, integration tests).
• Ensured compliance with CLAUDE.md rules, including no unvalidated modifications and mandatory documentation synchronization.

Why

These changes improve the reliability and clarity of the PRP template, reducing errors in AI-generated code by providing richer context and enforcing strict validation before modifications. The pre-write validation step prevents unauthorized or erroneous file changes, aligning with file integrity validation rule.

Validation

• Manually verified the updated template structure for clarity and completeness.
• Ensured no existing functionality or patterns are altered unnecessarily (no deletion of functional code).
• Confirmed the template remains compatible with existing examples (e.g., PRPs/EXAMPLE_multi_agent_prp.md).

Next Steps

• Review the updated template for adherence to project conventions.
• Test the template in a sample PRP to confirm usability with AI agents.

Please provide feedback ("Good" or "False") to proceed or iterate on this change.