chore: remove kokoro from compose, make host ports env-configurable

- Drop kokoro service (deployed separately); update default KOKORO_URL to kokoro.kalekber.cc
- Expose host ports via env vars (MINIO_PORT, MINIO_CONSOLE_PORT, POCKETBASE_PORT, BROWSERLESS_PORT, SCRAPER_PORT) for preview deployments

scraper/cmd/scraper/main.go

@@ -177,7 +177,7 @@ func run(log *slog.Logger) error {
 
 	case "serve":
 		addr := envOr("SCRAPER_HTTP_ADDR", ":8080")
-		kokoroURL := envOr("KOKORO_URL", "")
+		kokoroURL := envOr("KOKORO_URL", "https://kokoro.kalekber.cc")
 		kokoroVoice := envOr("KOKORO_VOICE", "af_bella")
 		log.Info("starting HTTP server",
 			"addr", addr,