v7.6.9 - Critical /learn:init Simplification

EMERGENCY FIX: Drastically simplified /learn:init command

Critical Change:
- Reduced command file from 227 lines to 24 lines (89% reduction)
- Removed ALL documentation that could trigger agent loading
- Explicit 'no agents, no skills' directive
- Direct Python script execution only
- Simple text output without formatting

This eliminates ANY opportunity for empty content blocks with cache_control.

User Impact:
- /learn:init now executes 3 simple bash commands
- No complex processing that could fail
- Immediate, reliable pattern initialization