#209

[nettrash]

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[Copilot]

Pull request overview

This pull request introduces a new “production-friendly” output mode for the compare command, aimed at generating migration SQL that minimizes locking and long-running work inside transaction blocks when applying changes to live PostgreSQL databases.

Changes:

• Added --output-for-production CLI flag and OUTPUT_FOR_PRODUCTION config key to enable production-friendly SQL emission.
• Implemented production-mode SQL rewriting to split out post-commit statements (e.g., CREATE/DROP INDEX CONCURRENTLY, VALIDATE CONSTRAINT, partition index ATTACH).
• Extended table scripting and comparer logic to defer index DDL and split FK creation/validation when production mode is enabled, with accompanying tests and documentation updates.

Reviewed changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
README.md	Documents the new flag/config key and describes production-friendly script behavior.
data/pgc.conf	Adds OUTPUT_FOR_PRODUCTION to the sample config with explanatory comments.
CHANGELOG	Adds v1.0.23 entry describing the production-friendly output feature.
app/src/main.rs	Adds the CLI flag and threads it through to the comparer.
app/src/dump/table.rs	Adds helpers to defer indexes and to plan index/FK changes for production output.
app/src/config/core.rs	Adds OUTPUT_FOR_PRODUCTION parsing and plumbing into Config.
app/src/config/core_tests.rs	Extends config parsing tests for the new key/default/error case.
app/src/comparer/production.rs	New module implementing production-mode SQL splitting/rewrites.
app/src/comparer/production_tests.rs	Unit tests for production-mode index/FK rewriting behavior.
app/src/comparer/mod.rs	Exposes the new production comparer module.
app/src/comparer/core.rs	Integrates production mode into compare emission, including post-commit section handling.
app/src/comparer/core_tests.rs	Adds integration-style tests validating production-mode script structure and defaults.
app/Cargo.toml	Bumps crate version to 1.0.23.
app/Cargo.lock	Updates lockfile to reflect the new version.

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