quality: enable repeatable Radeon Windows Vulkan qualification

[proggeramlug]

Windows qualification could not reach reliable captures: the runner resolved scene executables from the wrong directory, Vulkan surfaces lacked their owning HINSTANCE, screenshot export unconditionally swapped red/blue, and DPI/window borders changed manifest resolutions. This change fixes those paths and adds an explicit Radeon 760M Vulkan measurement profile with native Windows CPU preflight/postflight sampling and adapter validation.

The profile retains strict visual/telemetry checks and labels performance as measurement-only until Radeon budgets are reviewed. Hash-governed textual glTF fixtures retain LF endings on Windows.

Validation:

• All nine assets and approved baselines validate.
• Python runner tests: 23 passed. PNG round-trip regression test passes for RGBA/BGRA, sRGB/linear formats and padded rows.
• Two complete nine-case runs: 7 pass / 2 strict visual failures; repeatability PASS with 257 byte-identical artifacts. Hardware ray-query GI is confirmed on Radeon Vulkan.
• All five negative controls detect seeded regressions.
• The two failing images are also byte-identical at the original approved-baseline source revision on this host, ruling out the intervening renderer changes in this configuration.
• The file-line gate still reports nine pre-existing failures in unchanged files; edited files add no new violation.

Evidence and measurements | Complete ZIP

ZIP SHA-256: aa099676ecd801ebb7ed586ddb9f9732b8f913f13a6d926604ad193b078d82a4

Related: #153, #128. This PR targets the rendering integration branch underlying #147. It does not close the original RTX 4080 hardware gate or change approved baselines/thresholds.

[coderabbitai]

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