Upgrade Plain Packages

1. Run the upgrade

uv run plain upgrade [package-names...]

This will show which packages were upgraded (e.g., plain-postgres: 0.1.0 -> 0.2.0).

2. Review the changelog for each upgraded package

For each package that was upgraded:

1. Run uv run plain changelog <package> --from <old-version> --to <new-version>
2. Read both sections:

- "What's changed" — new features, behavior changes, bug fixes worth knowing about - "Upgrade instructions" — required code changes (or "No changes required")

1. If there are required code changes, apply them
2. Capture a short summary of "What's changed" for the final report — surface new APIs, new settings, new CLI commands, performance improvements, and notable bug fixes even when no code changes are required. Skip pure internal cleanup.

3. Update agent rules and skills

Run uv run plain agent install to sync any updated rules and skills from the upgraded packages.

4. Validate

1. Run uv run plain fix to fix formatting
2. Run uv run plain check to validate (linting, preflight, migrations, tests)

5. Report

For each upgraded package, report:

• Version bump (e.g., plain-postgres: 0.103.0 -> 0.105.0)
• A 1-3 bullet summary of notable changes from "What's changed" (new features, behavior changes, perf wins, notable fixes)
• What code changes were applied (or "no code changes required")

Guidelines

• Process ALL packages before testing
• DO NOT commit any changes
• Keep code changes minimal and focused
• Report any issues or conflicts encountered