fix(storage): verify conflict-free local datasource filters

[HandSonic]

Related issue

N/A - this is a fork CI verification for the test-isolation amendment to fork PR #75 and upstream PR OtterMind#2820.

Summary

• Preserve the local datasource alias and kind filtering implementation from PR fix(storage): honor local datasource filters #75.
• Move the three filter regression cases into LocalWorkspaceStorageDataSourceFilterTest.
• Restore LocalWorkspaceStoragePaginationTest to the main version so the amended branch merges cleanly with the parallel console-pagination fix.

This validation PR does not update the existing fix/local-datasource-filters branch or upstream PR OtterMind#2820. It exists to run fork CI against the amended, conflict-free commit before either branch is changed.

Affected surfaces

• Frontend / Web
• Backend / API / Storage
• Database plugin / Driver
• JCEF / Desktop packaging
• CI / Build / Release
• Documentation only

Verification

• Commands and results:
  • LocalWorkspaceStorageDataSourceFilterTest and LocalWorkspaceStoragePaginationTest: 9 passed (3 + 6).
  • Full storage reactor: 155 passed (tools 68, domain API 27, storage 60).
  • Community backend clean package: all 48 reactor modules passed.
  • git diff --check: passed.
  • git merge-tree --write-tree fix/local-datasource-filters fix/console-page-overflow: passed with no conflict; the merged tree contains both console-pagination cases and all three datasource-filter cases.
• Manual verification: Independent adversarial review approved the test isolation with no blocker.
• UI evidence: N/A

Risk and compatibility

• Public API or stored data: No additional production behavior or format change beyond the already reviewed datasource filters.
• Database or driver compatibility: N/A - local storage filtering only.
• Network, privacy, or security: N/A - no network or credential path changes.
• Community / Local / Pro boundary: Confined to Community local storage.
• Backward compatibility: The amendment only isolates regression tests in a dedicated class; filter behavior and test assertions are unchanged.

Reviewer map

• Start here: LocalWorkspaceStorageDataSourceFilterTest; compare LocalWorkspaceStoragePaginationTest with main to confirm that the shared file is untouched by the final commit.
• Failure condition: Any of the 9 focused tests fails, the full storage count differs from 155, or merge-tree reports a conflict with fix/console-page-overflow.
• Rollback or disable path: Delete the temporary verification branch after the validated commit is propagated; no runtime rollback applies to the test-only isolation amendment.

Contributor declaration

• I linked the Issue that defines this change. (N/A - verification amendment.)
• I tested the affected behavior and reported the actual results above.
• I did not include credentials, private data, or generated build output.
• I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.

AI assistance: Substantial AI assistance was used for implementation, test isolation, verification, and adversarial review; the final diff and evidence were manually inspected.

[HandSonic]

Validation complete: exact commit 264c19b passed all code checks and has been promoted to fork PR #75 and upstream OtterMind#2820. Closing this temporary verification PR; the verification branch is retained.