> Historical record: references to the legacy hosted PR check describe the
> original narrower gate. Use `nix flake check` for current validation; recorded
> results below do not establish a pass of today's broader check.

Card 15-18 Verification Evidence: Orchestrator Closure Gates
Executed on: Linux x86_64 Strix Halo gfx1151
Workspace: /home/mixer/gufo
Parent commit: yuvlvuwx 0125a678 model-extensions-4* | fix(extensions): version metadata discovery contract

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Gate 1: Infrastructure Sync Check
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Command: python3 tools/ci/generate-infrastructure.py --check
Result: PASS (0 drift across 6 files)

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Gate 2: Extension API Surface & Ratchet Invariants
================================================================================
Command: python3 tools/ci/check-extension-api.py
Result: PASS (108 public paths match SURFACE and declarations)

Command: python3 tools/ci/check-extension-isolation.py --fail-on-extension-boundary --fail-on-serving-boundary --fail-on-model-core-includes
Result: PASS (0 boundary violations across serving, model-core, and extension boundaries)

================================================================================
Gate 3: Documentation and Code Formatting
================================================================================
Command: python3 tools/ci/check-docs.py
Result: PASS (322 markdown files, 1609 links verified, 0 broken)

Command: nix shell --inputs-from . nixpkgs#clang-tools -c python3 tools/ci/check-format.py
Result: PASS (816 C++ files verified)

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Gate 4: Hosted PR Test Suite (check-pr)
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Command: nix develop -c cmake --build --preset cpu-test --target check-pr
Result: PASS (96/96 test suites passed, 100%)

================================================================================
Gate 5: Nix Production Build & Extension Diagnostics
================================================================================
Command: nix build && ./result/bin/gufo diagnose
Result: PASS
Extension API: 0.1.5
Extension selection: discovery
Built extensions:
  embedding_gemma2 0.1.0 (src/models/embedding_gemma2)
  minimax_h3 0.1.0 (src/models/minimax_h3)
  qwen3_asr 0.1.0 (src/models/qwen3_asr)
  qwen3_tts 0.1.0 (src/models/qwen3_tts)
  qwen_image_21 0.1.0 (src/models/qwen_image_21)
  provider embeddinggemma-2: available
  provider minimax-h3: available
  provider qwen3-asr: available
  provider qwen3-tts: available
  provider qwen-image-21: available

================================================================================
Gate 6: Sandboxed Nix PR Derivations
================================================================================
Command: legacy hosted PR check
Result: PASS (All check derivations built and passed)
