test(drizzle): restore typed mysql2 dispatch

[proggeramlug]

Summary

• remove the any escape hatches from the existing Drizzle/MySQL2 transaction fixture
• exercise both db.execute and the transaction callback through Drizzle's inferred MySql2Database<TSchema> & { $client: ... } type
• retain regression coverage for the typed dispatch failure now fixed on main by the dispatch/rooting changes

Closes #9516.

Testing

• bash tests/release/packages/drizzle-mysql2-tx/fixture.sh with the configured MySQL test credentials (PASS drizzle-mysql2-tx, 400 transactions, 1 MB nursery)
• cargo fmt --all --check
• ./scripts/test_affected_crates.sh --base origin/main --dry-run

./scripts/pre-tag-check.sh --quick passes its other checks but currently reports the existing local-binding allowlist mismatch in untouched code (dispatch_receiver_class.rs versus dynamic_dispatch.rs).

No version bump.

Summary by CodeRabbit

• Tests
  • Improved test fixture type safety by preserving inferred database and transaction types.
  • Added documentation for garbage-collection configuration and database type inference.

[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: d6903efd-c26a-45e1-bc48-acac29218808

📥 Commits

Reviewing files that changed from the base of the PR and between 7bb834e and 64664f4.

📒 Files selected for processing (1)

• tests/release/packages/drizzle-mysql2-tx/entry.ts

Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review.

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📝 Walkthrough

Walkthrough

The Drizzle MySQL2 release fixture documents GC-scavenge and typed dispatch coverage. It removes explicit any annotations from the database instance and transaction callback so Drizzle supplies the inferred types.

Changes

Drizzle MySQL2 typed fixture

Layer / File(s)	Summary
Preserve inferred database and transaction types tests/release/packages/drizzle-mysql2-tx/entry.ts	The fixture documents typed MySql2Database dispatch coverage and uses inferred types for the database and transaction callback.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 64664

This change restores typed MySQL2 dispatch coverage in an existing test fixture without changing production behavior, interfaces, or deployment configuration. No actionable merge-blocking risk remains beyond normal checks and review.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: restoring typed MySQL2 dispatch coverage in the Drizzle test fixture.
Description check	✅ Passed	The description provides the change summary, issue reference, test commands, known pre-tag-check limitation, and version-bump status. It omits some template headings, but the required information is s…
Linked Issues check	✅ Passed	The changes satisfy issue #9516 by removing any annotations and adding regression coverage for typed db.execute and db.transaction calls using Drizzle's inferred intersection type.
Out of Scope Changes check	✅ Passed	The changes are limited to the Drizzle MySQL2 transaction fixture and directly support the linked issue's typed-dispatch regression coverage.
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…

Full details: Description check

Explanation

The description provides the change summary, issue reference, test commands, known pre-tag-check limitation, and version-bump status. It omits some template headings, but the required information is substantially present.

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.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/9516-drizzle-typed-dispatch

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