fix: correct Gitea custom assets mount path for themes and favicon

Move custom assets from /data/gitea/custom/public to /data/gitea/public
to properly serve custom themes and favicon/logo files. Gitea expects
custom public assets at /data/gitea/public, not nested under custom/.

- Restructured dev/custom/public/ to dev/public/
- Updated volume mount in dev/compose.yaml
- Includes 21 custom themes from sainnhe/gitea-themes
- Includes custom favicon and logo

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

dev/README.md

@@ -1,51 +0,0 @@
-# Gitea Configuration
-
-## Post-Installation Setup
-
-After completing the Gitea installation at https://dev.pivoine.art, configure the following settings via the admin panel:
-
-### Enable Gravatar Avatars
-
-Since Gitea 1.18+, avatar settings are managed via the database, not configuration files:
-
-1. Log in as admin
-2. Go to **Site Administration** (top right menu)
-3. Navigate to **Configuration** → **Picture**
-4. Enable **Use Gravatar for avatars**
-5. Optionally set **Gravatar Source** to `https://secure.gravatar.com/avatar/`
-6. Save settings
-
-### Runner Registration
-
-To enable the Gitea Actions runner:
-
-1. Go to **Site Administration** → **Actions** → **Runners**
-2. Click **Create new Runner**
-3. Copy the registration token
-4. Add to `.env`: `DEV_GITEA_RUNNER_TOKEN=<token>`
-5. Restart services: `ssh -A root@vps "cd ~/Projects/docker-compose && arty up -d"`
-
-## Custom Themes
-
-**Default Theme:** `gitea-dark` (built-in Gitea dark theme)
-
-21 custom themes from [sainnhe/gitea-themes](https://git.sainnhe.dev/sainnhe/gitea-themes) are available for manual selection:
-
-- Edge (auto, dark, light)
-- Everforest (auto, dark, light)
-- Gruvbox (auto, dark, light)
-- Gruvbox Material (auto, dark, light)
-- Nord, Palenight, Soft Era
-- Sonokai (base + 5 variants)
-
-Users can select their preferred theme in **Settings** → **Appearance**.
-
-**Note:** Custom themes may not load as default theme due to Gitea's theme loading mechanism. They remain available for manual selection by users.
-
-## Custom Logo & Favicon
-
-Custom logo and favicon are mounted from `dev/custom/public/assets/img/`:
-- `favicon.svg` - Browser favicon
-- `logo.svg` - Gitea logo
-
-To update, replace the SVG files and restart Gitea.

dev/compose.yaml

@@ -11,7 +11,7 @@ services:
       - gitea_config:/etc/gitea
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
-      - ./custom:/data/gitea/custom:ro
+      - ./public:/data/gitea/public:ro
     environment:
       TZ: ${TIMEZONE:-Europe/Berlin}
       USER_UID: 1000