feat: add bridge script for Claude Code → LM Studio execution (v3.12.1)

Bridge script enables local execution of Claude Code plans via LM Studio:
- Python CLI with 5 components (DoobidooReader, LMStudioClient, Validator, StepExecutor, PlanExecutor)
- JSON Schema for plan validation (bridge-plan-schema.json)
- Cost optimization: Plan with Opus (~$0.50-2), execute free locally (80-90% savings)
- 4 validation types: json, syntax_check, contains_keys, non_empty
- CLI: --health, --list, --plan ID, -v verbose mode

Documentation:
- New section "Local Execution Bridge" in ultimate-guide.md §11.2
- scripts/README.md with full usage documentation
- machine-readable/reference.yaml entries for discoverability

Co-Authored-By: Claude <noreply@anthropic.com>

guide/cheatsheet.md

@@ -6,7 +6,7 @@
 
 **Written with**: Claude (Anthropic)
 
-**Version**: 3.12.0 | **Last Updated**: January 2026
+**Version**: 3.12.1 | **Last Updated**: January 2026
 
 ---
 
@@ -424,4 +424,4 @@ where.exe claude; claude doctor; claude mcp list
 
 **Author**: Florian BRUNIAUX | [@Méthode Aristote](https://methode-aristote.fr) | Written with Claude
 
-*Last updated: January 2026 | Version 3.12.0*
+*Last updated: January 2026 | Version 3.12.1*