fix: auto-select database connector based on deploy preset

[rsbh]

Summary

Auto-select the Nitro database connector based on the deploy preset instead of hardcoding sqlite.

See Nitro Database Connectors for full list.

Preset	Connector
bun	bun-sqlite
cloudflare / cloudflare-pages / cloudflare-module	cloudflare-d1
Default (node, vercel, etc.)	sqlite

Test plan

• Default dev server uses sqlite connector
• --preset bun uses bun-sqlite
• Build passes for all presets

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Project	Deployment	Actions	Updated (UTC)
chronicle	Ready	Preview, Comment	May 14, 2026 10:31am

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Run ID: 8262f5ff-7122-4ecf-991a-baa022602d4c

📥 Commits

Reviewing files that changed from the base of the PR and between 44d6e27 and 1a96796.

📒 Files selected for processing (1)

• packages/chronicle/src/server/vite-config.ts

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Improved server database configuration to automatically select the appropriate connector based on the deployment environment, reducing manual setup requirements across different platforms.

Walkthrough

The PR refactors database connector configuration to support multiple runtime environments. A new getDatabaseConnector helper centralizes preset-based connector selection, replacing a hardcoded sqlite config in the Nitrogen settings. The helper supports bun-sqlite for Bun, cloudflare-d1 for Cloudflare, and sqlite as a fallback.

Changes

Database connector selection helper

Layer / File(s)	Summary
Database connector selection helper packages/chronicle/src/server/vite-config.ts	A new getDatabaseConnector(preset?) helper function switches on preset to return the appropriate database connector (bun-sqlite for Bun, cloudflare-d1 for Cloudflare presets, sqlite as default) with connector-specific options. The Nitrogen config is updated to call this helper instead of using a fixed sqlite configuration.

🎯 2 (Simple) | ⏱️ ~8 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: auto-selecting the database connector based on deploy preset instead of hardcoding sqlite.
Description check	✅ Passed	The description clearly explains the purpose of the changes with a detailed mapping table and test plan directly related to the changeset.
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.

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✨ 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/db-connector-preset

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