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## Summary First in a stack of seven PRs migrating the remaining `executeSql` call sites to `SafeSqlFragment`. This PR lands pure additions — shared types and helpers that later PRs import. - `apps/studio/lib/postgres-types.ts` — `SafePostgresColumn` / `SafePostgresTable` wrappers over `PGColumn` / `PGTable` that brand `check` as `SafeSqlFragment` and add the optional `format_schema` field - `apps/studio/lib/sql.ts` — `trimSafeSqlFragment` overload set that preserves the brand through `.trim()` - `apps/studio/lib/type-helpers.ts` — refine `DeepReadonly` so primitives pass through unchanged - `apps/studio/components/ui/SafeSqlInput.tsx` — `<Input>` wrapper that emits `SafeSqlFragment` via `rawSql` No consumers in this PR. The next PRs in the stack pick these up. ## Stack This is PR 1 of 7. The full sequence: 1. **This PR** — Foundation utilities 2. `charis/safe-sql-last/2` — pg-meta columns + ColumnTypeRef cascade 3. `charis/safe-sql-last/3` — pg-meta non-column SafeSql (functions/policies/triggers) 4. `charis/safe-sql-last/4` — Studio reports / query performance / privileges 5. `charis/safe-sql-last/6` — Stragglers + remaining tests 6. `charis/safe-sql-last/7` — Flip `executeSql` signature from `string` to `SafeSqlFragment` ## Test plan - [x] `pnpm typecheck` passes for the Studio target on this branch - [x] No runtime behavior changes — only type-level additions and a new unused component <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit ## Release Notes * **New Features** * Introduced SafeSqlInput component providing secure and validated SQL query input handling with built-in constraints and error prevention. * **Refactor** * Enhanced internal type definitions and utilities for Postgres metadata handling and SQL operations to improve code reliability and maintainability. <!-- review_stack_entry_start --> [](https://app.coderabbit.ai/change-stack/supabase/supabase/pull/45897) <!-- review_stack_entry_end --> <!-- end of auto-generated comment: release notes by coderabbit.ai -->