fix: non-primitive types qualified

[tianzhou]

Fix #144

[Copilot]

Pull Request Overview

This PR adds support for handling custom types (like composite types and enums) from non-pg_catalog schemas in column definitions. It enhances type resolution logic to properly qualify base types from non-standard schemas and introduces a test setup mechanism for tests that require pre-existing types.

Key changes:

• Enhanced SQL queries to handle base types (typtype = 'b') from schemas other than pg_catalog
• Added setup.sql support to test infrastructure for pre-creating types/schemas before running diff tests
• Created comprehensive test case for adding columns with custom types

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
ir/queries/queries.sql	Added logic to qualify base types from non-pg_catalog/non-table schemas
internal/diff/diff_test.go	Added parseSQLWithSetup function and setup.sql file handling for tests
cmd/migrate_integration_test.go	Extended integration test to support setup.sql execution and temporary file creation
testdata/diff/create_table/add_column_custom_type/*	New test case with setup, old, new, and expected output files
.claude/skills/pg_dump/SKILL.md	Added new test command to checklist

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[Copilot]

Pull Request Overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

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