refactor: rename planta → plants, clean up codebase

- Rename planta module to plants everywhere (routes, modules, API,
  branding, i18n, docker, docs, shared packages)
- Fix package name collisions: @mana/credits-service, @mana/subscriptions-service
  (unblocks turbo)
- Extract layout composables: use-ai-tier-items, use-sync-status-items,
  RouteTierGate (layout 1345→1015 lines)
- Create shared DB pool for apps/api (lib/db.ts), migrate 5 modules
- Add automations module queries.ts with useAllAutomations/useEnabledAutomations
- Remove debug console.log statements from production code
- Rename storage display name: Ablage → Speicher

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

services/mana-subscriptions/package.json

@@ -1,5 +1,5 @@
 {
-	"name": "@mana/subscriptions",
+	"name": "@mana/subscriptions-service",
 	"version": "0.1.0",
 	"private": true,
 	"type": "module",