docs: add 2 resource evaluations (Osmani LinkedIn + Beyond Vibe Coding)

Added:
- Resource Evaluation: Addy Osmani LinkedIn Post (scored 2/5, Marginal)
  - Post about Anthropic study (17% comprehension gap)
  - 100% overlap with Shen & Tamkin 2026 already documented
  - Decision: Tracking mention only (mainstream diffusion timeline)
  - New criterion: "Influencer Amplification" pattern documented

- Resource Evaluation: "Beyond Vibe Coding" Book (scored 3/5, Pertinent)
  - Comprehensive O'Reilly book by Addy Osmani
  - 90% overlap analysis (10/14 topics covered 100%)
  - Decision: Minimal integration (tracking mention + cross-refs)
  - Cross-validation with 2 Osmani articles already integrated

Updated:
- CHANGELOG.md: [Unreleased] section with detailed entries
- README.md: Resource evaluations count (36 → 38 assessments)

Files created:
- docs/resource-evaluations/addy-osmani-linkedin-anthropic-study.md
- docs/resource-evaluations/beyond-vibe-coding.md
- docs/resource-evaluations/nick-tune-feedback-loops.md

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

guide/cheatsheet.md

@@ -6,7 +6,7 @@
 
 **Written with**: Claude (Anthropic)
 
-**Version**: 3.20.7 | **Last Updated**: January 2026
+**Version**: 3.20.8 | **Last Updated**: January 2026
 
 ---
 
@@ -484,4 +484,4 @@ 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 3.20.7*
+*Last updated: January 2026 | Version 3.20.8*

guide/ultimate-guide.md

@@ -10,7 +10,7 @@
 
 **Last updated**: January 2026
 
-**Version**: 3.20.7
+**Version**: 3.20.8
 
 ---
 
@@ -16438,4 +16438,4 @@ We'll evaluate and add it to this section if it meets quality criteria.
 
 **Contributions**: Issues and PRs welcome.
 
-**Last updated**: January 2026 | **Version**: 3.20.7
+**Last updated**: January 2026 | **Version**: 3.20.8