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 relationship and attribute data processing by grouping records into batches, reducing the number of database operations.
  • Added efficient handling for empty data collections.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e2f399ae-818e-4623-a371-8424e0e902b3

📥 Commits

Reviewing files that changed from the base of the PR and between e00d052 and ff18b70.

📒 Files selected for processing (1)

• internal/storage/postgres/data_writer.go

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📝 Walkthrough

Walkthrough

The Postgres data writer now inserts relationships and attributes in 500-row batches. It uses squirrel multi-row INSERT statements and skips empty collections.

Changes

Postgres batch inserts

Layer / File(s)	Summary
Chunked relationship and attribute inserts internal/storage/postgres/data_writer.go	batchInsertRelationships and batchInsertAttributes build and queue one squirrel multi-row INSERT per 500-row chunk. Both methods return early for empty input. Relationship inserts preserve the conflict constraint, and attribute values use protojson marshaling.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to ff18b

The batching change preserves correct result consumption and introduces no identified merge-blocking product or production risk; it is merge-ready 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 changeset updates PostgreSQL relationship and attribute inserts to use batches of 500 rows.	Rename the title to describe the implemented storage change, for example: "storage(postgres): batch relationship and attribute inserts".

✅ 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: 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.