Add table_template_module and remove old settings modules

[pyramation]

Summary

Adds the table_template_module table and removes the three old module tables it replaces: user_profiles_module, user_settings_module, and organization_settings_module.

The new table_template_module enables unified table creation templates using node_type dispatch, allowing different table types to be created through a single module table rather than requiring separate module tables for each type.

This is an upstream sync from constructive-db PR #340.

Table structure:

• database_id, schema_id, private_schema_id - standard module references
• table_id, owner_table_id - references to created table and owner table
• table_name - name of the table to create
• node_type - template type for dispatch (e.g., 'TableUserProfiles', 'TableOrganizationSettings', 'TableUserSettings')
• data - jsonb for type-specific parameters

Review & Testing Checklist for Human

• Breaking change: Verify downstream consumers are not using the removed modules (user_profiles_module, user_settings_module, organization_settings_module) directly
• Verify the table structure matches the implementation in constructive-db
• Verify all foreign key columns have corresponding indexes (database_id, schema_id, private_schema_id, table_id, owner_table_id, node_type)
• Run pnpm test in packages/metaschema-modules to ensure tests pass

Recommended test plan:

1. Deploy the migration to a test database with metaschema-schema already installed
2. Verify the table_template_module table is created with correct structure
3. Verify the old module tables are properly removed

Updates since last revision

• Removed old module tables: user_profiles_module, user_settings_module, organization_settings_module
• Updated test snapshots:
  • moduleTablesCount: 26→24, totalTables: 27→25
  • constraintCount for database_id FK test: 78650→67416
  • constraintCount for FK relationships test: 113921→94299
• Removed entries from pgpm.plan for deleted modules

Notes

This is a breaking change for any consumers using the old module tables directly. The trigger logic and generator functions that dispatch based on node_type live in constructive-db, not this public repo.

Link to Devin run: https://app.devin.ai/sessions/f4b2066a3e3e434da15de84fba001ac3
Requested by: Dan Lynch (@pyramation)

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