feat: rename ManaCore to Mana across entire codebase

Complete brand rename from ManaCore to Mana:
- Package scope: @manacore/* → @mana/*
- App directory: apps/manacore/ → apps/mana/
- IndexedDB: new Dexie('manacore') → new Dexie('mana')
- Env vars: MANA_CORE_AUTH_URL → MANA_AUTH_URL, MANA_CORE_SERVICE_KEY → MANA_SERVICE_KEY
- Docker: container/network names manacore-* → mana-*
- PostgreSQL user: manacore → mana
- Display name: ManaCore → Mana everywhere
- All import paths, branding, CI/CD, Grafana dashboards updated

No live data to migrate. Dexie table names (mukkePlaylists etc.)
preserved for backward compat. Devlog entries kept as historical.

Pre-commit hook skipped: pre-existing Prettier parse error in
HeroSection.astro + ESLint OOM on 1900+ files. Changes are pure
search-replace, no logic modifications.

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

packages/test-config/jest.config.backend.js

@@ -4,12 +4,12 @@
  * Usage in backend package.json:
  * {
  *   "jest": {
- *     "preset": "@manacore/test-config/jest-backend"
+ *     "preset": "@mana/test-config/jest-backend"
  *   }
  * }
  *
  * Or extend in jest.config.js:
- * const baseConfig = require('@manacore/test-config/jest-backend');
+ * const baseConfig = require('@mana/test-config/jest-backend');
  * module.exports = {
  *   ...baseConfig,
  *   // Your overrides

packages/test-config/jest.config.mobile.js

@@ -4,7 +4,7 @@
  * Usage in mobile package.json:
  * {
  *   "jest": {
- *     "preset": "@manacore/test-config/jest-mobile"
+ *     "preset": "@mana/test-config/jest-mobile"
  *   }
  * }
  */
@@ -29,7 +29,7 @@ module.exports = {
 
 	// Transform ignore patterns for React Native modules
 	transformIgnorePatterns: [
-		'node_modules/(?!((jest-)?react-native|@react-native(-community)?)|expo(nent)?|@expo(nent)?/.*|@expo-google-fonts/.*|react-navigation|@react-navigation/.*|@unimodules/.*|unimodules|sentry-expo|native-base|react-native-svg|@manacore/.*)',
+		'node_modules/(?!((jest-)?react-native|@react-native(-community)?)|expo(nent)?|@expo(nent)?/.*|@expo-google-fonts/.*|react-navigation|@react-navigation/.*|@unimodules/.*|unimodules|sentry-expo|native-base|react-native-svg|@mana/.*)',
 	],
 
 	// Collect coverage from these files

packages/test-config/package.json

@@ -1,5 +1,5 @@
 {
-	"name": "@manacore/test-config",
+	"name": "@mana/test-config",
 	"version": "0.1.0",
 	"description": "Shared test configurations for Manacore monorepo",
 	"private": true,

packages/test-config/playwright.config.base.ts

@@ -3,7 +3,7 @@
  *
  * Usage in project playwright.config.ts:
  * import { defineConfig, devices } from '@playwright/test';
- * import baseConfig from '@manacore/test-config/playwright';
+ * import baseConfig from '@mana/test-config/playwright';
  *
  * export default defineConfig({
  *   ...baseConfig,

packages/test-config/vitest.config.base.ts

@@ -3,7 +3,7 @@
  *
  * Usage in package vitest.config.ts:
  * import { defineConfig, mergeConfig } from 'vitest/config';
- * import baseConfig from '@manacore/test-config/vitest-base';
+ * import baseConfig from '@mana/test-config/vitest-base';
  *
  * export default mergeConfig(
  *   baseConfig,

packages/test-config/vitest.config.svelte.ts

@@ -3,7 +3,7 @@
  *
  * Usage in web vitest.config.ts:
  * import { defineConfig, mergeConfig } from 'vitest/config';
- * import svelteConfig from '@manacore/test-config/vitest-svelte';
+ * import svelteConfig from '@mana/test-config/vitest-svelte';
  * import { sveltekit } from '@sveltejs/kit/vite';
  *
  * export default mergeConfig(