Skip redundant DMS resources.json uploads

[shreyas-goenka]

Changes

Upload the DMS resources.json marker once on first deployment or migration, then skip routine uploads. Keep direct-state uploads and local state writes unchanged.

Stacked above #7055. Confirmed-DMS corruption recovery follows separately.

Why

DMS already records resource changes and versions. Re-uploading the marker on every deploy is redundant; its persisted serial is a checkpoint, while DMS remains authoritative.

Tests

Focused package tests and scoped Go lint pass. State/DMS acceptance passes: 42 directories, 58 variants, zero skips. Targeted assertions cover first/update/no-op writes of 1/0/0, one migration write, stable IDs, and advancing service versions.

Implementation and PR description written with Codex.

[eng-dev-ecosystem-bot]

Integration test report

Commit: 0d4f9e8

Run: 38584727256

	Env	❌​FAIL	🔄​flaky	✅​pass	🙈​skip	Time
❌​	aws linux-2core-8gb	7		296	26	19:51
❌​	aws-windows-latest-4core-16gb	7	4	294	24	24:42
❌​	azure linux-2core-8gb	7	3	292	26	26:14
❌​	azure-windows-latest-4core-16gb	7	1	296	24	23:37
❌​	gcp linux-2core-8gb	7		296	26	24:15
❌​	gcp-windows-latest-4core-16gb	7		298	24	20:21

14 interesting tests: 7 FAIL, 7 flaky

	Test Name	aws linux-2core-8gb	aws-windows-latest-4core-16gb	azure linux-2core-8gb	azure-windows-latest-4core-16gb	gcp linux-2core-8gb	gcp-windows-latest-4core-16gb
❌​	TestAccept	❌​F	❌​F	❌​F	❌​F	❌​F	❌​F
❌​	TestAccept/bundle/dms/existing-state	❌​F	❌​F	❌​F	❌​F	❌​F	❌​F
❌​	TestAccept/bundle/dms/existing-state/DMS=	❌​F	❌​F	❌​F	❌​F	❌​F	❌​F
🔄​	TestAccept/bundle/dms/multiple-resources	✅​p	🔄​f	✅​p	✅​p	✅​p	✅​p
🔄​	TestAccept/bundle/dms/multiple-resources/DMS=true	✅​p	🔄​f	✅​p	✅​p	✅​p	✅​p
🔄​	TestAccept/bundle/dms/record-failure	✅​p	✅​p	🔄​f	✅​p	✅​p	✅​p
🔄​	TestAccept/bundle/dms/record-failure/DMS=true	✅​p	✅​p	🔄​f	✅​p	✅​p	✅​p
❌​	TestAccept/bundle/dms/repeated-migration	❌​F	❌​F	❌​F	❌​F	❌​F	❌​F
❌​	TestAccept/bundle/dms/repeated-migration/DMS=true	❌​F	❌​F	❌​F	❌​F	❌​F	❌​F
❌​	TestAccept/bundle/dms/stale-local-state	❌​F	❌​F	❌​F	❌​F	❌​F	❌​F
❌​	TestAccept/bundle/dms/stale-local-state/DMS=	❌​F	❌​F	❌​F	❌​F	❌​F	❌​F
🔄​	TestAccept/bundle/dms/stale-plan	✅​p	🔄​f	✅​p	✅​p	✅​p	✅​p
🔄​	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=1	✅​p	🔄​f	✅​p	✅​p	✅​p	✅​p
🔄​	TestSyncNestedFolderDoesntFailOnNonEmptyDirectory	✅​p	✅​p	🔄​f	🔄​f	✅​p	✅​p

Top 14 slowest tests (at least 2 minutes):

duration	env	testname
3:12	azure-windows-latest-4core-16gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=1
2:52	gcp-windows-latest-4core-16gb	TestAccept/bundle/dms/no-drift/DMS=true
2:40	gcp linux-2core-8gb	TestAccept/bundle/dms/declined-deploy/DMS=true
2:34	aws-windows-latest-4core-16gb	TestAccept/bundle/dms/successful-recreate/DMS=true
2:30	gcp-windows-latest-4core-16gb	TestAccept/bundle/dms/marker-writes/DMS=true
2:22	aws linux-2core-8gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=
2:16	azure linux-2core-8gb	TestFilerRecursiveDelete/workspace_files_extensions
2:15	aws linux-2core-8gb	TestAccept/bundle/dms/marker-writes/DMS=true
2:14	azure-windows-latest-4core-16gb	TestImportDirDoesNotOverwrite
2:13	azure-windows-latest-4core-16gb	TestAccept/bundle/dms/successful-recreate/DMS=true
2:13	gcp linux-2core-8gb	TestAccept/bundle/dms/no-drift/DMS=true
2:10	aws-windows-latest-4core-16gb	TestAccept/bundle/dms/multiple-resources/DMS=true
2:09	azure-windows-latest-4core-16gb	TestAccept/bundle/dms/declined-deploy/DMS=true
2:06	gcp-windows-latest-4core-16gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=