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Digest agregateur couvrant Sonnet 4.6, Claude Code Security, CC v2.1.49-v2.1.50, Automatic Prompt Caching API, model deprecations, et activite Twitter.
Score: 3/5
Justification: Digest de sources primaires (blog Anthropic, CHANGELOG GitHub, Twitter). 50% deja documente dans le guide. La valeur reelle = signal de 2-3 gaps : prompt caching API (zero couverture), model deprecations (zero couverture), env vars manquantes. Score 3 (baisse de 4 → 3 apres challenge) : c'est un trigger de recherche, pas une source citable — pas d'URL, claims API non verifiables directement.
Gaps identifies
Gap
Localisation
Priorite
Prompt caching API (cache_control)
guide/ultimate-guide.md (Cost Optimization)
P1
CLAUDE_CODE_DISABLE_1M_CONTEXT env var
guide/ultimate-guide.md (env vars table)
P1
CLAUDE_CODE_SIMPLE env var clarification
guide/ultimate-guide.md (env vars table)
P1
Model deprecations (Haiku 3 → 20 avril 2026)
guide/ultimate-guide.md ou architecture.md
P2
background: true agent field
guide/ultimate-guide.md (agents section)
P2
claude agents CLI command
guide/ultimate-guide.md (agents section)
P2
Worktree hooks WorktreeCreate/WorktreeRemove
guide/ultimate-guide.md (worktree section)
P3
Fact-Check
Affirmation
Statut
Source
Sonnet 4.6 = default model
✅ Verifie
ultimate-guide.md:1765
CC v2.1.49/v2.1.50 dates 19-20 fev
✅ Verifie
claude-code-releases.md:27-51
Claude Code Security research preview
✅ Verifie
security-hardening.md:780-832
Haiku 3 deprecated 19 fev 2026, retirement 20 avril
Anthropic utilise des breakpoints explicites (cache_control), pas automatiques. Perplexity confirme : "developer-controlled through explicit cache breakpoints, not automatic"
Sonnet 3.7 / Haiku 3.5 retires
⚠️ Non verifie
Pas retrouve dans sources Perplexity. A verifier sur docs.anthropic.com/release-notes
Pricing prompt caching : 90% de reduction
✅ Verifie
Cache reads = 0.1x base price (Perplexity + docs Anthropic)