Changed #

• Empty -- up migration warning (#15): a migration whose -- up section parses empty (usually a marker typo such as -- UP) now emits a loud warning at parse time, since it previously applied nothing yet recorded as applied.
• _ensureChecksumColumn no longer swallows all errors (#15): after a failed ALTER TABLE it verifies the column is actually present and readable; any other failure (read-only database, missing permissions) now raises a StateError instead of hiding behind "column exists".

Changed #

• Replaced the hand-rolled SHA-256 checksum implementation with package:crypto (sha256.convert(utf8.encode(...))). Digests are byte-identical to the previous implementation, so checksums stored in existing bloom_migrations tables remain valid. Fixes #13.

• Added checksum validation to reject modified applied migrations.
• Added deployment locking and PostgreSQL dollar-quoted SQL parsing.

• Fixed CREATE INDEX statement generation for column lists.

All notable changes to this project will be documented in this file.

• Initial release of bloom_migrate.
• Dialect-aware SQL DDL generation for SQLite and PostgreSQL from bloom_db ModelMeta and FieldMeta.
• Migration file parser for migrations/<app>/NNNN_name.sql supporting -- up and -- down (as well as -- no-down) sections mirroring cloud-backend convention.
• Transactional migration runner with bloom_migrations history tracking table.
• CLI tool bloom_migrate providing makemigrations, migrate, rollback, and status commands.