chore: complete ManaCore → Mana rename (docs, go modules, plists, images)

Final cleanup of references missed in previous rename commits:

- Dockerfiles: PUBLIC_MANA_CORE_AUTH_URL → PUBLIC_MANA_AUTH_URL
- Go modules: github.com/manacore/* → github.com/mana/* (7 go.mod files)
- launchd plists: com.manacore.* → com.mana.* (14 files renamed + content)
- Image assets: *_Manacore_AI_Credits* → *_Mana_AI_Credits* (11 files)
- .env.example files: ManaCore brand strings → Mana
- .prettierignore: stale apps/manacore/* paths → apps/mana/*
- Markdown docs (CLAUDE.md, /docs/*): mana-core-auth → mana-auth, etc.

Excluded from rename: .claude/, devlog/, manascore/ (historical content),
client testimonials, blueprints, npm package refs (@mana-core/*).

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

packages/shared-types/package.json

@@ -2,7 +2,7 @@
 	"name": "@mana/shared-types",
 	"version": "0.1.0",
 	"private": true,
-	"description": "Shared TypeScript types for Manacore monorepo",
+	"description": "Shared TypeScript types for Mana monorepo",
 	"main": "./src/index.ts",
 	"types": "./src/index.ts",
 	"exports": {

packages/shared-types/src/index.ts

@@ -1,5 +1,5 @@
 /**
- * Shared types for Manacore monorepo
+ * Shared types for Mana monorepo
  *
  * This package contains common TypeScript types used across all projects.
  */

packages/shared-types/src/landing-config.ts

@@ -1,7 +1,7 @@
 /**
  * Landing Page Configuration Types
  *
- * Used by the Admin UI (Manacore Web) and the Landing Builder Service
+ * Used by the Admin UI (Mana Web) and the Landing Builder Service
  * to configure and generate static Astro landing pages for organizations.
  */