Prefer remote DMS markers over stale local state

[shreyas-goenka]

Changes

Prefer a valid pulled remote DMS marker over stale local state, regardless of the local serial or deployment-history configuration. Add focused coverage for enabled, disabled, and removed configuration.

Stacked above #6989. Upload suppression and corruption recovery follow separately.

Why

DMS owns recorded resources. The marker's serial will become a checkpoint when routine resources.json uploads are removed, so local file counters must not switch the bundle back to direct state.

Tests

State-management unit tests, scoped Go lint, and the existing state/DMS acceptance suite pass.

Implementation and PR description written with Codex.

[eng-dev-ecosystem-bot]

Integration test report

Commit: 09d8036

Run: 38583247773

	Env	❌​FAIL	🔄​flaky	✅​pass	🙈​skip	Time
❌​	aws linux-2core-8gb	5	3	293	26	22:11
❌​	aws-windows-latest-4core-16gb	5	2	296	24	20:04
❌​	azure linux-2core-8gb	5		295	26	22:27
❌​	azure-windows-latest-4core-16gb	5	2	295	24	20:51
❌​	gcp linux-2core-8gb	5	4	292	26	27:52
❌​	gcp-windows-latest-4core-16gb	5	1	297	24	20:24

17 interesting tests: 12 flaky, 5 FAIL

	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/declined-deploy	✅​p	✅​p	✅​p	🔄​f	✅​p	✅​p
🔄​	TestAccept/bundle/dms/declined-deploy/DMS=true	✅​p	✅​p	✅​p	🔄​f	✅​p	✅​p
🔄​	TestAccept/bundle/dms/depends-on	✅​p	🔄​f	✅​p	✅​p	✅​p	✅​p
🔄​	TestAccept/bundle/dms/depends-on/DMS=true	✅​p	🔄​f	✅​p	✅​p	✅​p	✅​p
❌​	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/no-drift	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
🔄​	TestAccept/bundle/dms/no-drift/DMS=true	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​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-plan	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
🔄​	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=1	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
🔄​	TestAccept/bundle/dms/successful-recreate	🔄​f	✅​p	✅​p	✅​p	✅​p	✅​p
🔄​	TestAccept/bundle/dms/successful-recreate/DMS=true	🔄​f	✅​p	✅​p	✅​p	✅​p	✅​p
🔄​	TestSyncIncrementalFileOverwritesFolder	🔄​f	✅​p	✅​p	✅​p	✅​p	✅​p
🔄​	TestSyncIncrementalFileSync	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f

Top 18 slowest tests (at least 2 minutes):

duration	env	testname
3:00	aws-windows-latest-4core-16gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=1
2:59	azure linux-2core-8gb	TestAccept/bundle/dms/no-drift/DMS=true
2:56	gcp-windows-latest-4core-16gb	TestAccept/bundle/dms/stale-local-state/DMS=
2:52	aws linux-2core-8gb	TestAccept/bundle/dms/successful-recreate/DMS=true
2:30	aws linux-2core-8gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=1
2:30	aws linux-2core-8gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=
2:27	azure-windows-latest-4core-16gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=
2:24	gcp-windows-latest-4core-16gb	TestImportDir
2:21	gcp-windows-latest-4core-16gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=1
2:19	azure-windows-latest-4core-16gb	TestAccept/bundle/dms/multiple-resources/DMS=true
2:18	gcp linux-2core-8gb	TestAccept/bundle/dms/declined-deploy/DMS=true
2:17	gcp-windows-latest-4core-16gb	TestAccept/bundle/dms/declined-deploy/DMS=true
2:13	gcp linux-2core-8gb	TestAccept/bundle/dms/successful-recreate/DMS=true
2:12	aws-windows-latest-4core-16gb	TestFilerReadDir/workspace_files_extensions
2:09	aws linux-2core-8gb	TestAccept/bundle/dms/no-drift/DMS=true
2:04	aws-windows-latest-4core-16gb	TestAccept/bundle/dms/no-drift/DMS=true
2:03	azure linux-2core-8gb	TestAccept/bundle/dms/stale-local-state/DMS=
2:00	azure-windows-latest-4core-16gb	TestAccept/bundle/dms/stale-plan/DMS=true/READPLAN=1