feat: add deterministic visual-change detection for PRs. #31317

Job	Run time
Test and Build / PostgreSQL integration (push)	2m 23s
Test and Build / Build App	2m 48s
Test and Build / PostgreSQL integration (migrate)	2m 8s
Test and Build / Lint and Test	2m 53s
Test and Build / Test (shard 3)	1m 54s
Test and Build / Test (shard 2)	1m 46s
Check Docs Changes	-1s
Migrate Dev DB	-1s
Build AMD64	-1s
Detect Desktop Changes	-1s
Build ARM64 (GHCR Only)	-1s
Check Desktop Signing Secrets	0s
Deploy Trigger.dev (Dev)	0s
Build Dev ECR	0s
Create Desktop Prerelease	0s
Publish Desktop Prerelease	0s
Desktop Prerelease Build	0s
Prune Desktop Prereleases	0s
Detect Version	-7s
Migrate DB	-1s
Promote Images	-1s
Process Docs	-1s
Create GHCR Manifests	-1s
Resolve Attestation Subjects	0s
Attest Images	0s
Create GitHub Release	0s
Desktop Release	0s
	13m 36s

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