feat(docker): prepare portable images with runtime hotel configuration

src/lib/imager.ts

@@ -1,28 +1,13 @@
 /**
  * Avatar imager helpers.
  *
- * The public-facing imager URL is configured via NEXT_PUBLIC_IMAGER_URL env var.
- * Defaults to epicnabbo.nl imager with effect=14 and img_format=apng.
+ * Browser and server markup use the same runtime-configured avatar proxy.
  */
 
 export type { AvatarOptions } from "@/types/admin";
 
 import type { AvatarOptions } from "@/types/admin";
 
-const DEFAULT_IMAGER_URL = "https://epicnabbo.nl/imaging/avatarimage";
-
-/**
- * Resolve the public-facing imager base URL from env.
- * Falls back to epicnabbo.nl if not configured.
- */
-export function resolveImagerBase(): string {
-	const fromEnv = process.env.NEXT_PUBLIC_IMAGER_URL?.trim();
-	if (!fromEnv) {
-		return DEFAULT_IMAGER_URL;
-	}
-	return fromEnv.replace(/\/+$/, "");
-}
-
 /**
  * Build an avatar image URL using the configured imager.
  * Uses effect=14 and img_format=apng by default for epicnabbo.nl compatibility.
@@ -59,6 +44,6 @@ export function getAvatarUrl(
 	if (gesture) params.set("gesture", gesture);
 	if (action) params.set("action", action);
 
-	const base = resolveImagerBase();
+	const base = "/api/imaging/avatar";
 	return `${base}?${params.toString()}`;
 }