release: v3.18.2 - Steinberger Practitioner Insight

Add Peter Steinberger (PSPDFKit Founder, Moltbot Creator) to Practitioner
Insights with model-agnostic workflow patterns.

Changes:
- Add Steinberger entry in guide/ai-ecosystem.md (stream monitoring,
  multi-project juggling, fresh context validation, iterative exploration)
- Complete evaluation in docs/resource-evaluations/steinberger-inference-speed.md
  (score 3/5, fact-checked GPT-5.2, validated credentials)
- Update docs/resource-evaluations/README.md (15→16 evaluations)
- Add practitioner_steinberger references in machine-readable/reference.yaml
- Version bump 3.18.1 → 3.18.2 (VERSION + sync all docs)
- Update CHANGELOG.md with detailed v3.18.2 entry
- Update README.md evaluations count (22→25)

Scope: Model-agnostic patterns only, zero model comparisons.
Source: https://steipete.me/posts/2025/shipping-at-inference-speed

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

README.md

@@ -71,7 +71,7 @@ graph LR
     root --> quiz[🧠 quiz/<br/>227 questions]
     root --> tools[🔧 tools/<br/>utils]
     root --> machine[🤖 machine-readable/<br/>AI index]
-    root --> docs[📚 docs/<br/>22 evaluations]
+    root --> docs[📚 docs/<br/>25 evaluations]
 
     style root fill:#d35400,stroke:#e67e22,stroke-width:3px,color:#fff
     style guide fill:#2980b9,stroke:#3498db,stroke-width:2px,color:#fff
@@ -482,7 +482,7 @@ See [CONTRIBUTING.md](./CONTRIBUTING.md) for guidelines.
 
 ---
 
-*Version 3.18.0 | January 2026 | Crafted with Claude*
+*Version 3.18.2 | January 2026 | Crafted with Claude*
 
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