feat: Schema rename for @pgpmjs/core (rename/develop consolidation)

[pyramation]

Summary

Updates hardcoded PostgreSQL schema names in the pgpm export functionality to match the schema rename in constructive-db PR #216:

• collections_public → metaschema_public (database metadata tables)
• meta_public → services_public (service tables like apis, sites, domains)
• rls_module and user_auth_module → metaschema_modules_public (module configuration tables)

Also updates the default schemas array in get-graphql-schema.ts to use the new schema names.

This is a breaking change that must be coordinated with the constructive-db rename.

Files changed:

• pgpm/cli/src/commands/export.ts - SQL queries for database/schema selection
• pgpm/core/src/export/export-meta.ts - Table config and SQL queries for metadata export
• pgpm/core/src/export/export-migrations.ts - SQL queries and comments in migration export
• pgpm/core/__tests__/export/export-flow.test.ts - Test fixtures updated to use new schema names
• pgpm/core/__tests__/export/export-meta.test.ts - Test assertions updated for new schema names
• packages/cli/src/commands/get-graphql-schema.ts - Default schemas array updated
• __fixtures__/output/ - Schema fixture files renamed and modules_public.ts removed

Updates since last revision

• Updated rls_module and user_auth_module to use metaschema_modules_public schema (matching constructive-db PR [DONT MERGE] change listModules #216)
• Updated get-graphql-schema.ts default schemas: removed dashboard_public, added metaschema_modules_public
• Fixed export-flow.test.ts to create metaschema_modules_public schema and move module tables there
• Updated export-meta.test.ts to separate module tables into their own test section

Review & Testing Checklist for Human

• CRITICAL: Verify the pg-ast file changes (version 1.30.2 → 1.30.4 in asts.ts and wrapped.ts) are intentional - these are auto-generated files and the version bump appears unrelated to the schema rename. Consider reverting if accidental.
• Verify metaschema_modules_public schema exists in target database before deploying (created by constructive-db PR [DONT MERGE] change listModules #216)
• Grep for any remaining old schema references: grep -r "collections_public\|meta_public\|dashboard_public" pgpm/ packages/cli/
• Verify deployment order: constructive-db PR [DONT MERGE] change listModules #216 must be deployed FIRST, then this PR

Recommended test plan:

1. Deploy constructive-db PR [DONT MERGE] change listModules #216 to a test database
2. Run pgpm export against the test database to verify queries work with new schema names
3. Verify exported SQL files reference the correct schema names (metaschema_public, services_public, metaschema_modules_public)

Notes

This PR consolidates the schema rename changes for the rename/develop branch. Part of the massive schema rename effort documented in docs/plan/NAMING-PROPOSAL.md in constructive-db.

Link to Devin run: https://app.devin.ai/sessions/218e681281f94c7b8c18e5a110f5f995
Requested by: Dan Lynch (@pyramation)

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