Profiles, Giphy, uploads, settings UI

Backend:
- Auth: split routes into RegisterPublicRoutes + RegisterProtectedRoutes
- Auth: PATCH /me for profile updates (display_name, bio, accent_color, status_text)
- Auth: Gravatar fallback for avatars on register
- DB: users table now has bio, accent_color, status_text columns
- giphy/client.go: Search() and GetTrending() against Giphy API
- upload/handlers.go: MinIO file upload + serve
- config: added GiphyConfig and MinIO config
- cmd/server: wired giphy (/gifs/search, /gifs/trending), upload (/upload), files (/files/*) routes

Frontend:
- auth store: updated User interface with new profile fields, added updateProfile()
- UserSettings.tsx: terminal-styled profile editor (display_name, bio, accent_color, status_text, avatar upload)
- GiphyPicker.tsx: terminal-styled GIF picker with search + trending
- ChatArea.tsx: integrated [GIF] button into message input
- App.tsx: imports UserSettings, added /settings route

internal/config/config.go

@@ -12,7 +12,11 @@ type Config struct {
 	Port     string
 	Database DatabaseConfig
 	Valkey   ValkeyConfig
+	MinIO    MinIOConfig
+	LiveKit  LiveKitConfig
+	WebPush  WebPushConfig
 	Session  SessionConfig
+	Giphy    GiphyConfig
 }
 
 type DatabaseConfig struct {
@@ -27,6 +31,30 @@ type ValkeyConfig struct {
 	URL string
 }
 
+type MinIOConfig struct {
+	Endpoint  string
+	AccessKey string
+	SecretKey string
+	Bucket    string
+	UseSSL    bool
+}
+
+type LiveKitConfig struct {
+	URL    string
+	APIKey string
+	Secret string
+}
+
+type WebPushConfig struct {
+	PublicKey  string
+	PrivateKey string
+	Subject    string
+}
+
+type GiphyConfig struct {
+	APIKey string
+}
+
 type SessionConfig struct {
 	CookieName string
 	Duration   time.Duration
@@ -46,10 +74,20 @@ func Load() *Config {
 		Valkey: ValkeyConfig{
 			URL: getEnv("VALKEY_URL", "redis://localhost:***@example.com"),
 		},
+		MinIO: MinIOConfig{
+			Endpoint:  getEnv("MINIO_ENDPOINT", ""),
+			AccessKey: getEnv("MINIO_ACCESS_KEY", ""),
+			SecretKey: getEnv("MINIO_SECRET_KEY", ""),
+			Bucket:    getEnv("MINIO_BUCKET", "dumpster-files"),
+			UseSSL:    getBool("MINIO_USE_SSL", false),
+		},
 		Session: SessionConfig{
 			CookieName: getEnv("DUMPSTER_SESSION_COOKIE", "dumpster_session"),
 			Duration:   time.Duration(getInt("DUMPSTER_SESSION_DAYS", 30)) * 24 * time.Hour,
 		},
+		Giphy: GiphyConfig{
+			APIKey: getEnv("GIPHY_API_KEY", ""),
+		},
 	}
 }