refactor(main): _resolve_model_id_from_config nimmt PrinterYAMLConfig statt Any (#67)

[strausmann]

Summary

Letzter verbleibender Any-typed Parameter aus dem Audit-#67-Finding zu _build_backend/factory: _resolve_model_id_from_config(printer_cfg: Any) → PrinterYAMLConfig. Der _build_backend-Helper existiert nicht mehr nach Phase 1k.1a — _resolve_model_id_from_config war das einzige verbliebene Any in dem Bereich.

Test plan

• mypy ✓ ruff ✓
• tests/unit/test_lifespan.py — 7 passed

Refs #67 Audit-Punkt: PR #59 — main.py:112,119 _build_backend Any typed

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Diese Änderung refaktoriert die Funktion _resolve_model_id_from_config, um eine explizite Typisierung anstelle von Any zu verwenden. Dies erhöht die Robustheit des Codes und stellt sicher, dass die übergebene Konfiguration korrekt validiert wird, was einen weiteren Punkt aus dem Sicherheits-Audit adressiert.

Highlights

• Verbesserte Typsicherheit: Der Parameter printer_cfg in der Funktion _resolve_model_id_from_config wurde von Any auf den spezifischen Typ PrinterYAMLConfig umgestellt.
• Abschluss des Audit-Findings: Mit dieser Änderung wurde der letzte verbleibende Any-Typ in diesem Bereich entfernt, wie im Audit-Finding Audit: 41 unaddressed review findings across PRs #50-#65 #67 gefordert.

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[gemini-code-assist]

Code Review

This pull request improves type safety in backend/app/main.py by replacing the Any type annotation for the printer_cfg parameter in _resolve_model_id_from_config with the specific PrinterYAMLConfig schema. There are no review comments, and I have no feedback to provide.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.30%. Comparing base (e88601b) to head (4e06429).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #123      +/-   ##
==========================================
+ Coverage   89.27%   89.30%   +0.02%     
==========================================
  Files          91       91              
  Lines        4262     4263       +1     
  Branches      368      368              
==========================================
+ Hits         3805     3807       +2     
  Misses        359      359              
+ Partials       98       97       -1     

Components	Coverage Δ
Printer Backends (transport)	86.87% <ø> (ø)
Printer Models (drivers)	88.20% <ø> (ø)
Services	91.20% <ø> (ø)
REST API	84.97% <ø> (ø)
Pydantic Schemas	100.00% <ø> (ø)
Integration Plugins	100.00% <ø> (ø)

Files with missing lines	Coverage Δ
backend/app/main.py	86.55% <100.00%> (+0.39%)	⬆️

Flag	Coverage Δ
backend	89.30% <100.00%> (+0.02%)	⬆️

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