fix: correct v2.1.39/v2.1.41 feature attributions + add claude auth CLI docs

3 features were incorrectly attributed to v2.1.39 instead of v2.1.41
(guard nested sessions, OTel speed attribute, Agent Teams model fix).
Verified against official CHANGELOG. Also adds claude auth login/status/logout
to the ultimate guide maintenance commands table.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/resource-evaluations/veille-hebdo-cc-2026-02-16.md

@@ -0,0 +1,79 @@
+---
+title: "Veille hebdomadaire Claude Code CLI (9-16 fev 2026)"
+type: "weekly-watch"
+date: "2026-02-16"
+score: 4
+action: "integrated"
+versions_covered: ["2.1.39", "2.1.41", "2.1.42"]
+sources:
+  - "GitHub CHANGELOG (anthropics/claude-code)"
+  - "Releasebot (releasebot.io)"
+  - "GitHub Releases"
+  - "Official docs (code.claude.com)"
+---
+
+# Veille hebdomadaire Claude Code CLI (9-16 fev 2026)
+
+## Resume
+
+Veille couvrant 3 releases Claude Code (v2.1.39, v2.1.41, v2.1.42) avec analyse d'impact, avant/apres pour chaque feature, et recommandations operationnelles.
+
+## Points cles
+
+- v2.1.42: Perf startup (Zod schema deferred), prompt cache hit rate, fix /resume, fix image dimensions
+- v2.1.41: `claude auth login/status/logout`, Windows ARM64, guard sessions imbriquees, OTel `speed`, nombreux fixes stabilite
+- v2.1.39: Terminal rendering perf, fatal errors displayed, process hang fix
+
+## Score: 4/5
+
+**Justification**: La veille a permis de detecter 3 features mal attribuees dans notre propre tracking (guard sessions, OTel speed, Agent Teams fix etaient dans v2.1.39 au lieu de v2.1.41). Cette correction factuelle justifie le score eleve.
+
+## Gaps identifies
+
+| Gap | Localisation | Priorite |
+|-----|-------------|----------|
+| `claude auth` CLI non documente | guide/ultimate-guide.md (section 1.1) | Haute |
+| Features mal attribuees v2.1.39/v2.1.41 | YAML + MD releases | Critique |
+| Release channels (latest/stable) | Non documente | Basse |
+
+## Challenge (technical-writer agent)
+
+**Score propose par challenger**: 3/5
+
+Arguments:
+- Tracking deja a jour, apport limite aux gaps
+- Gaps identifies = usage avance, pas core workflows
+- Sources citees mais pas linkees directement
+
+**Contre-argument retenu**: La correction des attributions erronees justifie le 4/5. Sans cette veille, 3 features resteraient attribuees a la mauvaise version.
+
+## Fact-Check
+
+| Affirmation | Verifiee | Source |
+|-------------|----------|--------|
+| v2.1.42: Zod schema deferred | Verified | CHANGELOG officiel (gh api) |
+| v2.1.42: Prompt cache hit rate | Verified | CHANGELOG officiel |
+| v2.1.41: `claude auth` CLI | Verified | CHANGELOG officiel |
+| v2.1.41: Windows ARM64 | Verified | CHANGELOG officiel |
+| v2.1.41: Guard sessions (pas v2.1.39) | Verified | CHANGELOG officiel |
+| v2.1.41: OTel speed (pas v2.1.39) | Verified | CHANGELOG officiel |
+| v2.1.39: Terminal rendering + stability | Verified | CHANGELOG officiel |
+| Releasebot "first seen" v2.1.41 = 11 fev | Discrepancy | GitHub Release = 13 fev UTC |
+
+## Actions realisees
+
+1. **YAML corrige**: `claude-code-releases.yaml` — 3 features deplacees de v2.1.39 vers v2.1.41, date v2.1.39 corrigee (2026-02-11 -> 2026-02-10)
+2. **MD corrige**: `claude-code-releases.md` — Meme correction, contenu v2.1.39/v2.1.41 realigne sur le CHANGELOG officiel
+3. **Guide mis a jour**: `ultimate-guide.md` — Ajout `claude auth login/status/logout` dans la table des commandes maintenance (section 1.1)
+
+## Decision finale
+
+- **Score**: 4/5
+- **Action**: Integre
+- **Confiance**: Haute (fact-check complet contre CHANGELOG officiel via gh api)
+
+---
+
+**Evaluated by**: Claude Code (Opus 4.6)
+**Challenge by**: Sonnet 4.5 (technical-writer agent)
+**Method**: Multi-phase (Summary > Gap Analysis > Challenge > Fact-Check > Integration)