chore: remove @manacore/shared-supabase package

Package was unused — no imports found across the entire codebase.
All apps have migrated to direct PostgreSQL (Drizzle ORM) for backends
and mana-core-auth API for mobile/web clients.

Removes package and all documentation references.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/shared-supabase/package.json

@@ -1,25 +0,0 @@
-{
-	"name": "@manacore/shared-supabase",
-	"version": "0.1.0",
-	"private": true,
-	"description": "Shared Supabase client and utilities for Manacore monorepo",
-	"main": "./src/index.ts",
-	"types": "./src/index.ts",
-	"exports": {
-		".": "./src/index.ts"
-	},
-	"scripts": {
-		"type-check": "tsc --noEmit",
-		"clean": "rm -rf dist",
-		"lint": "eslint ."
-	},
-	"dependencies": {
-		"@supabase/supabase-js": "^2.81.1"
-	},
-	"devDependencies": {
-		"typescript": "^5.9.3"
-	},
-	"peerDependencies": {
-		"@manacore/shared-types": "workspace:*"
-	}
-}

packages/shared-supabase/src/index.ts

@@ -1,80 +0,0 @@
-/**
- * Shared Supabase utilities for Manacore monorepo
- *
- * This package provides a unified Supabase client and common database utilities.
- */
-
-import { createClient } from '@supabase/supabase-js';
-import type { SupabaseClient } from '@supabase/supabase-js';
-import type { SupabaseConfig } from '@manacore/shared-types';
-
-export { SupabaseClient } from '@supabase/supabase-js';
-
-/**
- * Create a Supabase client with the given configuration
- */
-export function createSupabaseClient(config: SupabaseConfig): SupabaseClient {
-	return createClient(config.url, config.anonKey, {
-		auth: {
-			persistSession: true,
-			autoRefreshToken: true,
-		},
-	});
-}
-
-/**
- * Create a Supabase admin client with service role key
- */
-export function createSupabaseAdminClient(config: SupabaseConfig): SupabaseClient {
-	if (!config.serviceRoleKey) {
-		throw new Error('Service role key is required for admin client');
-	}
-
-	return createClient(config.url, config.serviceRoleKey, {
-		auth: {
-			persistSession: false,
-			autoRefreshToken: false,
-		},
-	});
-}
-
-/**
- * Supabase error type
- */
-export interface SupabaseError {
-	message: string;
-	code?: string;
-	details?: string;
-	hint?: string;
-}
-
-/**
- * Standardized query result type
- */
-export interface QueryResult<T> {
-	data: T | null;
-	error: SupabaseError | null;
-}
-
-/**
- * Common database query helpers
- */
-export const dbHelpers = {
-	/**
-	 * Handle Supabase query result and return standardized response
-	 */
-	handleQueryResult<T>(result: { data: T | null; error: SupabaseError | null }): QueryResult<T> {
-		if (result.error) {
-			return {
-				data: null,
-				error: {
-					message: result.error.message,
-					code: result.error.code,
-					details: result.error.details,
-					hint: result.error.hint,
-				},
-			};
-		}
-		return { data: result.data, error: null };
-	},
-};

packages/shared-supabase/tsconfig.json

@@ -1,17 +0,0 @@
-{
-	"compilerOptions": {
-		"target": "ES2022",
-		"module": "ESNext",
-		"moduleResolution": "bundler",
-		"lib": ["ES2022", "DOM"],
-		"strict": true,
-		"esModuleInterop": true,
-		"skipLibCheck": true,
-		"forceConsistentCasingInFileNames": true,
-		"isolatedModules": true,
-		"verbatimModuleSyntax": true,
-		"noEmit": true
-	},
-	"include": ["src/**/*"],
-	"exclude": ["node_modules"]
-}