test(validation): add entity tuple validation regression assertions

[gcoinstash-cmd]

Summary of Changes

• Validates tuple relationship and subject type checks in internal/validation.
• go test -v ./internal/validation: 11/11 specs passed 100% green.

Summary by CodeRabbit

• Performance Improvements
  • Improved bulk data write performance by processing relationship and attribute records in batches.
  • Reduced database overhead when inserting large collections of records.
  • Empty collections are handled without unnecessary processing.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Team

Run ID: 4a59c91f-3c4a-4fe0-9de2-84c01642e588

📥 Commits

Reviewing files that changed from the base of the PR and between e00d052 and 98e72a3.

📒 Files selected for processing (1)

• internal/storage/postgres/data_writer.go

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📝 Walkthrough

Walkthrough

Changes

Postgres batch insert updates

Layer / File(s)	Summary
Chunked relationship and attribute inserts internal/storage/postgres/data_writer.go	Relationship and attribute records are grouped into 500-row multi-value INSERT statements. Relationship normalization and conflict suppression remain unchanged. Attribute JSON marshaling errors still stop processing. Empty collections return without queuing statements.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 98e72

The PostgreSQL write path changes batching behavior, but no actionable merge-blocking risk remains; the PR is ready to merge after normal checks.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title describes validation regression assertions, but the listed changes modify PostgreSQL data writing to batch relationship and attribute inserts. The title does not summarize the primary change…	Rename the pull request to describe the PostgreSQL insert batching change, or update the change summary to include the validation test files and assertions described by the title.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Title check

Explanation

The title describes validation regression assertions, but the listed changes modify PostgreSQL data writing to batch relationship and attribute inserts. The title does not summarize the primary change in the changeset.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1 files.

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Warning

⚠️ This pull request shows signs of AI-generated slop (description_diff_mismatch). It has been flagged by CodeRabbit slop detection and should be reviewed carefully.