Artifact and media metadata were previously reconstructed from job result
refs and JSON sidecar files. This change regularizes metadata into SQLite,
keeps filesystem blobs in place, and preserves backward compatibility via
lazy fallback and backfill from existing job refs and JSON metadata.
Constraint: Blob storage remains on the local filesystem in this phase
Rejected: Migrate blobs into SQLite | larger scope and worse operational profile for current media sizes
Rejected: Hard cutover without fallback | unsafe for historical data already on the test server
Confidence: medium
Scope-risk: moderate
Directive: Treat SQLite as the metadata source of truth; JSON sidecars are compatibility fallback only
Tested: go test ./...; deployed to test server 101.42.99.35; verified /v1/artifacts, /v1/artifacts/:id, signed media URL 200, unsigned content 401
Not-tested: Full historical backfill sweep over all existing artifact rows under production-sized data volume
The server now keeps Vidu URL-based image2video requests on a valid default duration when callers omit duration, and it forwards MiniMax S2V reference images in the images[] shape expected by the deployed Hailuo adapter.
Constraint: The test environment currently validates provider behavior through popiartServer binary deploys rather than waiting for broader upstream adapter rollouts
Rejected: Keep the old shared 4-second default for all providers | breaks viduq3-turbo when duration is omitted
Rejected: Translate S2V references into subject_reference in popiartServer | the deployed Hailuo adapter already expects top-level images and performs its own mapping
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep provider-specific video defaults and reference-shape compatibility isolated in popiartServer unless upstream adapters are upgraded in lockstep
Tested: go test ./internal/server -run TestInferRouteKeyForModelRecognizesViduAsVideo|TestGenerate|TestResolve|TestSubmitMiniMaxVideoTask|TestSubmitImageToVideoTask|TestExecuteImageToImageJobUsesGenerationsPathForMiniMax|TestExecuteImageToVideoJob|TestResolveVideoReferencesSupportsImagesArray
Not-tested: Full PopiNewAPI unit suite from the local checkout
The server now keeps portable image ratio normalization, enforces documented Seedream size presets, routes MiniMax img2img through generations-style payloads, and submits Hailuo video variants through the video generations API with proper reference-image handling.
Constraint: The deployed test chain relies on popiartServer as the lowest-risk place to adapt provider-specific routing without broad newapi changes
Rejected: Expand newapi relay modes for every MiniMax image/video branch | larger blast radius than needed for the verified server-managed flows
Confidence: high
Scope-risk: moderate
Reversibility: clean
Directive: Keep MiniMax-specific media routing in popiartServer unless upstream newapi adapters are upgraded to the same contract
Tested: go test ./internal/server -run TestInferRouteKeyForModelRecognizesViduAsVideo|TestGenerate|TestResolve|TestSubmitMiniMaxVideoTask|TestExecuteImageToImageJobUsesGenerationsPathForMiniMax|TestExecuteImageToVideoJob|TestResolveVideoReferencesSupportsImagesArray
Not-tested: Full PopiNewAPI unit suite (blocked earlier by external module checksum drift in local checkout)
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