docs: add detailed implementation status and action plan for 6 issues

Comprehensive breakdown:
- Issue #8 (CODE_OF_CONDUCT): Complete, ready for PR
- Issue #7 (CONTRIBUTING): Complete, ready for PR
- Issue #5 (Training Dataset): Not started, 20-30h effort, high priority
- Issue #4 (Socket.IO Chat): Not started, 15-20h effort, high priority
- Issue #3 (AI Config): 90% done, 4-6h to fix, needs debugging
- Issue #2 (Homepage): Not started, 25-30h effort, medium priority

Includes PR creation strategy, blocker identification, effort estimation, and quality standards.

Author: LocalMind Dev