Ship portable CPU dispatch and verified shared runtime dependencies

docs/evidence/windows-package-cpu-dispatch.json

@@ -0,0 +1,15 @@
+{
+  "architecture": "x86_64",
+  "verified_files": 39,
+  "cpu_backend_module": "ggml-cpu-cascadelake.dll",
+  "vulkan_module_loaded": false,
+  "baseline_only": false,
+  "archive_sha256": "0e35c10ec48d4f3380915528a16529eb694418fb72717acd5cb81e2d9da46332",
+  "worker_requested_device": "auto",
+  "worker_actual_device": "cpu",
+  "no_gpu_condition": "GGML_DISABLE_VULKAN=1 only in child; SEARCHI_FORCE_CPU absent",
+  "worker_startup_query_and_exit_ms": 19626.68719998328,
+  "query_dimensions": 768,
+  "decoder": "ffprobe version n9.0.2-27-g7e93014c5b-20261012 Copyright (c) 2007-2026 the FFmpeg developers",
+  "scope": "Real packaged worker default-mode CPU fallback with disabled provider; no GPU, native UI or clean-machine certification"
+}