chore(studio): drop @supabase/postgres-meta in favor of @supabase/pg-meta (supabase#45844)

## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

## What kind of change does this PR introduce?

Refactor / dependency cleanup.

## What is the current behavior?

`apps/studio` lists both `@supabase/pg-meta` (workspace package) as a
runtime dep and `@supabase/postgres-meta` (external npm package,
`^0.64.4`) as a devDependency. The external package is used only for
type imports across 44 files — there is no runtime usage and no codegen
pipeline that needs it.

## What is the new behavior?

Every `Postgres*` type import (`PostgresTable`, `PostgresColumn`,
`PostgresPolicy`, `PostgresTrigger`, `PostgresView`,
`PostgresMaterializedView`, `PostgresForeignTable`, `PostgresSchema`,
`PostgresPublication`, `PostgresRelationship`, `PostgresPrimaryKey`) is
replaced with its `PG*` counterpart from `@supabase/pg-meta`, and the
external dep is removed from \`apps/studio/package.json\`. Top-level
type re-exports were added to \`packages/pg-meta/src/index.ts\` so
consumers can import directly from the package root.

Two latent issues surfaced by the stricter pg-meta types are also fixed:
- \`data/foreign-tables/foreign-tables-query.ts\` was casting
foreign-table results as \`PostgresView[]\`; corrected to
\`PGForeignTable[]\`.
- \`pg-meta\`'s \`PGTrigger\` Zod schema declared
\`orientation\`/\`activation\` as \`z.string()\`, inconsistent with
pg-meta's own \`getDatabaseTriggerUpdateSQL\` helper that requires the
narrow literal unions; tightened to \`z.enum\`.

## Additional context

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* Updated internal TypeScript type definitions across the codebase to
use the latest type system from `@supabase/pg-meta`.
  * Removed `@supabase/postgres-meta` dependency.
* Enhanced type validation for database triggers and schemas to enforce
stricter constraints.

[![Review Change
Stack](https://storage.googleapis.com/coderabbit_public_assets/review-stack-in-coderabbit-ui.svg)](https://app.coderabbit.ai/change-stack/supabase/supabase/pull/45844)

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: charislam

apps/studio/components/grid/components/formatter/ForeignKeyFormatter.tsx

@@ -1,4 +1,4 @@
-import type { PostgresTable } from '@supabase/postgres-meta'
+import type { PGTable } from '@supabase/pg-meta'
 import { ArrowRight } from 'lucide-react'
 import type { PropsWithChildren } from 'react'
 import type { RenderCellProps } from 'react-data-grid'
@@ -38,7 +38,7 @@ export const ForeignKeyFormatter = (props: Props) => {
       r.source_column_name === column.name
   )
 
-  const { data: targetTable, isPending: isLoadingTargetTable } = useTableQuery<PostgresTable>(
+  const { data: targetTable, isPending: isLoadingTargetTable } = useTableQuery<PGTable>(
     {
       projectRef: project?.ref,
       connectionString: project?.connectionString,

apps/studio/components/grid/components/formatter/ReferenceRecordPeek.tsx

@@ -1,4 +1,4 @@
-import { PostgresTable } from '@supabase/postgres-meta'
+import type { PGTable } from '@supabase/pg-meta'
 import { keepPreviousData } from '@tanstack/react-query'
 import { useParams } from 'common'
 import { Key } from 'lucide-react'
@@ -29,7 +29,7 @@ import { useTableRowsQuery } from '@/data/table-rows/table-rows-query'
 import { useSelectedProjectQuery } from '@/hooks/misc/useSelectedProject'
 
 interface ReferenceRecordPeekProps {
-  table: PostgresTable
+  table: PGTable
   column: string
   value: string | number | Record<string, unknown>
 }

apps/studio/components/grid/components/grid/Grid.tsx

@@ -1,6 +1,6 @@
 import { DndContext, DragOverlay, PointerSensor, useSensor, useSensors } from '@dnd-kit/core'
 import { horizontalListSortingStrategy, SortableContext } from '@dnd-kit/sortable'
-import type { PostgresColumn } from '@supabase/postgres-meta'
+import type { PGColumn } from '@supabase/pg-meta'
 import { forwardRef, memo, Ref, useCallback, useMemo, useRef, useState } from 'react'
 import DataGrid, {
   CalculatedColumn,
@@ -137,7 +137,7 @@ export const Grid = memo(
           tableEditorSnap.onEditForeignKeyColumnValue({
             foreignKey,
             row,
-            column: column as unknown as PostgresColumn,
+            column: column as unknown as PGColumn,
           })
         }
       }

apps/studio/components/interfaces/Auth/Policies/Policies.utils.ts

@@ -1,5 +1,5 @@
+import type { PGPolicy } from '@supabase/pg-meta'
 import { ident } from '@supabase/pg-meta/src/pg-format'
-import type { PostgresPolicy } from '@supabase/postgres-meta'
 import { has, isEmpty, isEqual } from 'lodash'
 
 import {
@@ -19,7 +19,7 @@ import type { ForeignKeyConstraint } from '@/data/database/foreign-key-constrain
 
 export const createSQLPolicy = (
   policyFormFields: PolicyFormField,
-  originalPolicyFormFields?: PostgresPolicy
+  originalPolicyFormFields?: PGPolicy
 ) => {
   const { definition, check } = policyFormFields
   const formattedPolicyFormFields = {
@@ -129,7 +129,7 @@ export const createPayloadForCreatePolicy = (
 
 export const createPayloadForUpdatePolicy = (
   policyFormFields: PolicyFormField,
-  originalPolicyFormFields: PostgresPolicy
+  originalPolicyFormFields: PGPolicy
 ): PostgresPolicyUpdatePayload => {
   const { definition, check } = policyFormFields
   const formattedPolicyFormFields = {

apps/studio/components/interfaces/Auth/Policies/PolicyEditorModal/index.tsx

@@ -1,4 +1,4 @@
-import { PostgresPolicy } from '@supabase/postgres-meta'
+import type { PGPolicy } from '@supabase/pg-meta'
 import { isEmpty, noop } from 'lodash'
 import { useCallback, useEffect, useState } from 'react'
 import { toast } from 'sonner'
@@ -32,7 +32,7 @@ interface PolicyEditorModalProps {
   visible?: boolean
   schema?: string
   table?: string
-  selectedPolicyToEdit?: PostgresPolicy
+  selectedPolicyToEdit?: PGPolicy
   showAssistantPreview?: boolean
   onSelectCancel: () => void
   onCreatePolicy: (payload: PostgresPolicyCreatePayload) => Promise<boolean>

apps/studio/components/interfaces/Auth/Policies/PolicyEditorPanel/LockedQuerySection.tsx

@@ -1,9 +1,9 @@
-import { PostgresPolicy } from '@supabase/postgres-meta'
+import type { PGPolicy } from '@supabase/pg-meta'
 import { Lock } from 'lucide-react'
 
 interface LockedCreateQuerySection {
   schema: string
-  selectedPolicy?: PostgresPolicy
+  selectedPolicy?: PGPolicy
   isRenamingPolicy: boolean
   formFields: { name: string; table: string; behavior: string; command: string; roles: string }
 }

apps/studio/components/interfaces/Auth/Policies/PolicyEditorPanel/PolicyEditorPanel.utils.ts

@@ -1,9 +1,9 @@
+import type { PGPolicy } from '@supabase/pg-meta'
 import { ident, keyword, safeSql, type SafeSqlFragment } from '@supabase/pg-meta/src/pg-format'
-import type { PostgresPolicy } from '@supabase/postgres-meta'
 import { isEqual } from 'lodash'
 
 // [Joshen] Not used but keeping this for now in case we do an inline editor
-export const generatePlaceholder = (policy?: PostgresPolicy) => {
+export const generatePlaceholder = (policy?: PGPolicy) => {
   if (policy === undefined) {
     return `
 -- Press tab to use this code\n
@@ -78,7 +78,7 @@ export const generateCreatePolicyQuery = ({
 }
 
 export const checkIfPolicyHasChanged = (
-  selectedPolicy: PostgresPolicy,
+  selectedPolicy: PGPolicy,
   policyForm: {
     name: string
     roles: string[]

apps/studio/components/interfaces/Auth/Policies/PolicyEditorPanel/PolicyEditorPanelHeader.tsx

@@ -1,4 +1,4 @@
-import type { PostgresPolicy } from '@supabase/postgres-meta'
+import type { PGPolicy } from '@supabase/pg-meta'
 import { ChevronDown, PanelLeftClose, PanelRightClose, X } from 'lucide-react'
 import { useState } from 'react'
 import {
@@ -19,7 +19,7 @@ export const PolicyEditorPanelHeader = ({
   showTools,
   setShowTools,
 }: {
-  selectedPolicy?: PostgresPolicy
+  selectedPolicy?: PGPolicy
   showTools: boolean
   setShowTools: (v: boolean) => void
 }) => {

apps/studio/components/interfaces/Auth/Policies/PolicyEditorPanel/PolicyTemplates.tsx

@@ -1,4 +1,4 @@
-import { PostgresPolicy } from '@supabase/postgres-meta'
+import type { PGPolicy } from '@supabase/pg-meta'
 import { Search } from 'lucide-react'
 import { useState } from 'react'
 import {
@@ -26,7 +26,7 @@ import { NoSearchResults } from '@/components/ui/NoSearchResults'
 interface PolicyTemplatesProps {
   schema: string
   table: string
-  selectedPolicy?: PostgresPolicy
+  selectedPolicy?: PGPolicy
   selectedTemplate?: string
   onSelectTemplate: (template: any) => void
 }

apps/studio/components/interfaces/Auth/Policies/PolicyTableRow/PolicyTableRow.utils.ts

@@ -1,9 +1,9 @@
 import { ident, joinSqlFragments, safeSql, type SafeSqlFragment } from '@supabase/pg-meta'
-import { PostgresPolicy } from '@supabase/postgres-meta'
+import type { PGPolicy } from '@supabase/pg-meta'
 
 import type { TableApiAccessData } from '@/data/privileges/table-api-access-query'
 
-export type Policy = Omit<PostgresPolicy, 'definition' | 'check'> & {
+export type Policy = Omit<PGPolicy, 'definition' | 'check'> & {
   definition: SafeSqlFragment | null
   check: SafeSqlFragment | null
 }