diff --git a/Dockerfile b/Dockerfile
index c8a9199..15bb9cf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -59,9 +59,12 @@ ENV NEXT_TELEMETRY_DISABLED=1
 # su-exec — drops privileges from root to nextjs in the entrypoint
 RUN apk add --no-cache vips su-exec
 
-# Security: run as non-root user (entrypoint chowns volumes as root, then drops)
+# Security: run as non-root user (entrypoint chowns volumes as root, then drops).
+# `--ingroup nodejs` makes nodejs the primary group of nextjs — without this
+# Alpine assigns gid 65533 (nogroup) and every file the container writes ends
+# up as 1001:65533, which is confusing and surprises sudoers on the host.
 RUN addgroup --system --gid 1001 nodejs
-RUN adduser --system --uid 1001 nextjs
+RUN adduser --system --uid 1001 --ingroup nodejs nextjs
 
 # Public assets (logos, brand SVGs, model files)
 COPY --from=builder /app/public ./public
diff --git a/scripts/docker-entrypoint.sh b/scripts/docker-entrypoint.sh
index 0a70d15..b55b4b1 100644
--- a/scripts/docker-entrypoint.sh
+++ b/scripts/docker-entrypoint.sh
@@ -3,18 +3,20 @@
 # FLUX container entrypoint.
 #
 # Runs as root briefly so we can:
-#   1. Make sure all mounted upload dirs are writable by uid 1001 (nextjs).
-#      The host folders may have been mkdir'd by another user (debian) and
-#      docker-compose mounts preserve those permissions, which would lock
-#      the container out. This single chown fixes it on every start.
+#   1. Make sure every mounted upload dir AND every file inside is owned by
+#      uid 1001 / gid 1001 (nextjs:nodejs). Without this, files written
+#      previously when nextjs had nogroup (gid 65533) stay 1001:65533 and
+#      sysadmins on the host see a wrong group.
 #   2. Apply pending Prisma migrations idempotently.
 #   3. Hand off to the Next.js server, dropping privileges to nextjs.
 # ─────────────────────────────────────────────────────────────────────────────
 
 set -e
 
-# Fix ownership on every mounted public/* folder so the container can write.
-# Skips silently if a folder doesn't exist or chown isn't permitted.
+# Recursively normalise ownership on every mounted public/* folder. Recursive
+# is fine because (a) Prisma and Next.js never read /app/public except from
+# fs APIs that don't care about ownership, and (b) the chown is fast on local
+# disk even with thousands of files — runs once per container start.
 for dir in \
   /app/public/branding \
   /app/public/footage \
@@ -22,7 +24,8 @@ for dir in \
   /app/public/cases \
   /app/public/news \
   /app/public/parts \
-  /app/public/operations-inbox; do
+  /app/public/operations-inbox \
+  /app/public/heritage; do
   if [ -d "$dir" ]; then
     chown -R 1001:1001 "$dir" 2>/dev/null || true
   fi
diff --git a/src/app/hq-command/dashboard/applications/actions.ts b/src/app/hq-command/dashboard/applications/actions.ts
index a6c3378..ce910f3 100644
--- a/src/app/hq-command/dashboard/applications/actions.ts
+++ b/src/app/hq-command/dashboard/applications/actions.ts
@@ -7,6 +7,7 @@ import { revalidatePath } from "next/cache";
 import { unstable_noStore as noStore } from "next/cache"; // 🔥 ANTI-CACHÉ
 // 🔥 IMPORTAMOS EL TRADUCTOR DE IA
 import { translateContentForCMS } from "@/lib/aiTranslator";
+import { ensureAssetFolders } from "@/lib/assetFolders";
 
 const generateSlug = (title: string) => {
   return title.toLowerCase().trim().replace(/[^\w\s-]/g, '').replace(/[\s_-]+/g, '-').replace(/^-+|-+$/g, '');
@@ -70,12 +71,16 @@ export async function createApplication(formData: FormData) {
         translationsJson
       }
     });
-    
+
+    // Pre-create the asset bucket folders so the editor's first upload
+    // (videos, renders, gallery, datasheet) lands somewhere that exists.
+    ensureAssetFolders("applications", slug);
+
     revalidatePath("/hq-command/dashboard/applications");
     revalidatePath("/[locale]", "layout");
     return { success: true };
-  } catch (error) { 
-    return { error: "Failed to create application. Title might already exist." }; 
+  } catch (error) {
+    return { error: "Failed to create application. Title might already exist." };
   }
 }
 
diff --git a/src/app/hq-command/dashboard/network/actions.ts b/src/app/hq-command/dashboard/network/actions.ts
index 454af77..7e027f0 100644
--- a/src/app/hq-command/dashboard/network/actions.ts
+++ b/src/app/hq-command/dashboard/network/actions.ts
@@ -6,6 +6,7 @@ import { revalidatePath } from "next/cache";
 
 // 🔥 Importamos el motor de traducción robusto
 import { translateContentForCMS } from "@/lib/aiTranslator";
+import { ensureAssetFolders, titleToSlug } from "@/lib/assetFolders";
 
 // 1. OBTENER TODOS LOS NODOS
 export async function getNodes() {
@@ -40,6 +41,11 @@ export async function createNode(formData: FormData) {
       }
     });
 
+    // Pre-create the asset bucket folders so the editor's first upload
+    // (videos, renders, gallery, datasheet, models) lands somewhere that
+    // already exists — no more "EACCES because the dir wasn't created".
+    ensureAssetFolders("cases", titleToSlug(title));
+
     revalidatePath("/hq-command/dashboard/network");
     revalidatePath("/[locale]", "layout");
     return { success: true };
@@ -48,6 +54,19 @@ export async function createNode(formData: FormData) {
   }
 }
 
+// 2b. REPARAR / GARANTIZAR CARPETAS DE ASSETS PARA UN NODO EXISTENTE.
+// Útil para nodos creados antes de que ensureAssetFolders existiera.
+export async function ensureNodeAssetFolders(id: string) {
+  try {
+    const node = await prisma.globalNode.findUnique({ where: { id }, select: { title: true } });
+    if (!node) return { error: "Node not found." };
+    ensureAssetFolders("cases", titleToSlug(node.title));
+    return { success: true };
+  } catch (error: any) {
+    return { error: error.message || "Failed to ensure asset folders." };
+  }
+}
+
 // 3. ELIMINAR UN NODO
 export async function deleteNode(id: string) {
   try {
diff --git a/src/app/hq-command/dashboard/news/actions.ts b/src/app/hq-command/dashboard/news/actions.ts
index f5abfff..7f1f34e 100644
--- a/src/app/hq-command/dashboard/news/actions.ts
+++ b/src/app/hq-command/dashboard/news/actions.ts
@@ -3,7 +3,8 @@
 import { prisma } from "@/lib/prisma";
 import { revalidatePath } from "next/cache";
 // 🔥 Importamos nuestra nueva IA traductora
-import { translateContentForCMS } from "@/lib/aiTranslator"; 
+import { translateContentForCMS } from "@/lib/aiTranslator";
+import { ensureAssetFolders } from "@/lib/assetFolders";
 
 export async function getNewsArticles() {
   try {
@@ -49,6 +50,10 @@ export async function createNewsArticle(formData: FormData) {
       }
     });
 
+    // Pre-create the asset bucket folders so the editor's first upload
+    // lands somewhere that already exists.
+    ensureAssetFolders("news", slug);
+
     revalidatePath("/news");
     revalidatePath("/[locale]/news", "layout");
     return { success: true };
diff --git a/src/lib/assetFolders.ts b/src/lib/assetFolders.ts
new file mode 100644
index 0000000..9ae4063
--- /dev/null
+++ b/src/lib/assetFolders.ts
@@ -0,0 +1,72 @@
+// src/lib/assetFolders.ts
+// ─────────────────────────────────────────────────────────────────────────────
+// Server-side helpers that ensure every asset bucket exists when an editor
+// creates a new entity in HQ Command. Without this, the editor's first
+// upload error-paths because the target subfolder doesn't exist yet.
+//
+// Each scope has a known set of "buckets" — the well-known subfolder layout
+// the front-end expects (e.g. cases use videos/, renders/, gallery/). We
+// pre-create them all so editors can drop files anywhere without needing
+// to think about server-side folder structure.
+// ─────────────────────────────────────────────────────────────────────────────
+
+import "server-only";
+import fs from "fs";
+import path from "path";
+
+export type AssetScope = "cases" | "applications" | "news" | "parts";
+
+const SCOPE_ROOT: Record<AssetScope, string> = {
+  cases: path.join(process.cwd(), "public", "cases"),
+  applications: path.join(process.cwd(), "public", "applications"),
+  news: path.join(process.cwd(), "public", "news"),
+  parts: path.join(process.cwd(), "public", "parts"),
+};
+
+// Buckets per scope — the subfolders the front-end reads from.
+// Adding a new bucket here is the only place in the codebase you need to
+// touch to introduce a new asset type.
+const SCOPE_BUCKETS: Record<AssetScope, string[]> = {
+  cases: ["videos", "renders", "gallery", "datasheet", "models"],
+  applications: ["videos", "renders", "gallery", "datasheet"],
+  news: ["gallery"],
+  parts: ["renders", "gallery"],
+};
+
+/**
+ * Create the slug folder + every bucket subfolder if they don't exist.
+ * Idempotent — safe to call on every entity create or edit.
+ */
+export function ensureAssetFolders(scope: AssetScope, slug: string): void {
+  if (!slug) return;
+
+  try {
+    const safeSlug = slug.toLowerCase().replace(/[^a-z0-9_-]/g, "-").replace(/-+/g, "-").replace(/^-|-$/g, "");
+    if (!safeSlug) return;
+
+    const root = SCOPE_ROOT[scope];
+    const baseDir = path.join(root, safeSlug);
+
+    fs.mkdirSync(baseDir, { recursive: true });
+
+    for (const bucket of SCOPE_BUCKETS[scope]) {
+      fs.mkdirSync(path.join(baseDir, bucket), { recursive: true });
+    }
+  } catch (error) {
+    console.error(`[assetFolders] Failed to ensure ${scope}/${slug}:`, error);
+  }
+}
+
+/**
+ * Convert a free-text title into the same slug the front-end uses.
+ * Mirrors `nodeToSlug` in ApplicationClient.tsx so the folder name matches
+ * the path the page renders for that node's assets.
+ */
+export function titleToSlug(title: string): string {
+  return title
+    .toLowerCase()
+    .trim()
+    .replace(/[^\w\s-]/g, "")
+    .replace(/[\s_-]+/g, "-")
+    .replace(/^-+|-+$/g, "");
+}