Add Arcane script, status UI, validation & cache

Multiple changes improving UX, reliability, and CI permissions:

- Add scripts/tools/addon/arcane.sh: installer/update/uninstall helper for Arcane (Docker Compose), creates update helper and generates secrets.
- Add ServerStatusIndicator component and integrate into header (src/app/_components/ServerStatusIndicator.tsx, src/app/page.tsx); adjust hero/layout to accommodate inline version + status.
- Enhance GeneratorTab (src/app/_components/GeneratorTab.tsx): fetch full script details by slug, derive and apply default resource values from install_methods, and show an App Defaults info panel.
- Harden repo provider detection (src/server/lib/repositoryUrlValidation.js/.ts): use URL parsing for hostname matching with safe fallback to 'custom'.
- Tune client caching (src/trpc/query-client.ts): increase staleTime to 30min, set gcTime to 1h, and disable automatic refetches on mount/window focus/reconnect.
- Update GitHub Actions permissions: node.js.yml grants contents: read; release-drafter.yml grants contents: write and pull-requests: read.

These changes aim to provide better default resource handling for scripts, visible server reachability, more robust URL parsing, improved client-side cache behavior, and explicit workflow permissions.

.github/workflows/node.js.yml

@@ -9,6 +9,9 @@ on:
   pull_request:
     branches: [ "main" ]
 
+permissions:
+  contents: read
+
 jobs:
   build: