diff --git a/webui/eslint.config.js b/webui/eslint.config.js
index 8378b436..00e29960 100644
--- a/webui/eslint.config.js
+++ b/webui/eslint.config.js
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import js from "@eslint/js";
 import tseslint from "typescript-eslint";
 import solid from "eslint-plugin-solid";
diff --git a/webui/package.json b/webui/package.json
index 495246b8..c9d16f44 100644
--- a/webui/package.json
+++ b/webui/package.json
@@ -15,7 +15,7 @@
     "eslint": "^9.39.2",
     "eslint-plugin-solid": "^0.14.5",
     "globals": "^17.0.0",
-    "prettier": "^3.8.0",
+    "prettier": "^3.8.1",
     "tslib": "^2.8.1",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.53.1",
diff --git a/webui/pnpm-lock.yaml b/webui/pnpm-lock.yaml
index 761787cc..c0506ceb 100644
--- a/webui/pnpm-lock.yaml
+++ b/webui/pnpm-lock.yaml
@@ -37,8 +37,8 @@ importers:
         specifier: ^17.0.0
         version: 17.0.0
       prettier:
-        specifier: ^3.8.0
-        version: 3.8.0
+        specifier: ^3.8.1
+        version: 3.8.1
       tslib:
         specifier: ^2.8.1
         version: 2.8.1
@@ -1010,8 +1010,8 @@ packages:
     resolution: {integrity: sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==}
     engines: {node: '>= 0.8.0'}
 
-  prettier@3.8.0:
-    resolution: {integrity: sha512-yEPsovQfpxYfgWNhCfECjG5AQaO+K3dp6XERmOepyPDVqcJm+bjyCVO3pmU+nAPe0N5dDvekfGezt/EIiRe1TA==}
+  prettier@3.8.1:
+    resolution: {integrity: sha512-UOnG6LftzbdaHZcKoPFtOcCKztrQ57WkHDeRD9t/PTQtmT0NHSeWWepj6pS0z/N7+08BHFDQVUrfmfMRcZwbMg==}
     engines: {node: '>=14'}
     hasBin: true
 
@@ -2109,7 +2109,7 @@ snapshots:
 
   prelude-ls@1.2.1: {}
 
-  prettier@3.8.0: {}
+  prettier@3.8.1: {}
 
   punycode@2.3.1: {}
 
diff --git a/webui/src/app.css b/webui/src/app.css
index a205a243..f6b339d9 100644
--- a/webui/src/app.css
+++ b/webui/src/app.css
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 :root {
   --md-sys-shape-corner-medium: 12px;
   --md-sys-shape-corner-large: 16px;
diff --git a/webui/src/components/Skeleton.tsx b/webui/src/components/Skeleton.tsx
index 4684bd59..05146ff5 100644
--- a/webui/src/components/Skeleton.tsx
+++ b/webui/src/components/Skeleton.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import "./Skeleton.css";
 
 interface Props {
diff --git a/webui/src/components/TopBar.css b/webui/src/components/TopBar.css
index 0ad8d5b8..d9e2c92a 100644
--- a/webui/src/components/TopBar.css
+++ b/webui/src/components/TopBar.css
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 .top-bar {
   flex-shrink: 0;
   background-color: var(--md-sys-color-surface-container);
diff --git a/webui/src/components/TopBar.tsx b/webui/src/components/TopBar.tsx
index c55f92ab..b0e4ac08 100644
--- a/webui/src/components/TopBar.tsx
+++ b/webui/src/components/TopBar.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { Show, For } from "solid-js";
 import { store } from "../lib/store";
 import { ICONS } from "../lib/constants";
diff --git a/webui/src/lib/api.mock.ts b/webui/src/lib/api.mock.ts
index 383bd2ea..122d312f 100644
--- a/webui/src/lib/api.mock.ts
+++ b/webui/src/lib/api.mock.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { APP_VERSION } from "./constants_gen";
 import { DEFAULT_CONFIG } from "./constants";
 import type {
diff --git a/webui/src/lib/api.ts b/webui/src/lib/api.ts
index e9b9e431..f128daa4 100644
--- a/webui/src/lib/api.ts
+++ b/webui/src/lib/api.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { DEFAULT_CONFIG, PATHS } from "./constants";
 import { APP_VERSION } from "./constants_gen";
 import { MockAPI } from "./api.mock";
diff --git a/webui/src/lib/store.ts b/webui/src/lib/store.ts
index bf751f58..40ae28e5 100644
--- a/webui/src/lib/store.ts
+++ b/webui/src/lib/store.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { createSignal, createMemo, createEffect, createRoot } from "solid-js";
 import { API } from "./api";
 import { DEFAULT_CONFIG, DEFAULT_SEED } from "./constants";
diff --git a/webui/src/lib/theme.ts b/webui/src/lib/theme.ts
index 58c1dfba..a3034964 100644
--- a/webui/src/lib/theme.ts
+++ b/webui/src/lib/theme.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import {
   argbFromHex,
   hexFromArgb,
diff --git a/webui/src/material-web.d.ts b/webui/src/material-web.d.ts
index 6e7731c2..eb17df35 100644
--- a/webui/src/material-web.d.ts
+++ b/webui/src/material-web.d.ts
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import type { JSX } from "solid-js";
 
 type BaseProps = JSX.HTMLAttributes<HTMLElement>;
diff --git a/webui/src/routes/GranaryTab.tsx b/webui/src/routes/GranaryTab.tsx
index dd805072..01d48535 100644
--- a/webui/src/routes/GranaryTab.tsx
+++ b/webui/src/routes/GranaryTab.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { createSignal, createMemo, onMount, Show, For } from "solid-js";
 import { API } from "../lib/api";
 import { store } from "../lib/store";
diff --git a/webui/src/routes/InfoTab.tsx b/webui/src/routes/InfoTab.tsx
index 5fc81efd..1d6c6bdf 100644
--- a/webui/src/routes/InfoTab.tsx
+++ b/webui/src/routes/InfoTab.tsx
@@ -1,3 +1,8 @@
+/**
+ * Copyright 2026 Hybrid Mount Developers
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 import { createSignal, onMount, Show, For, createMemo } from "solid-js";
 import { store } from "../lib/store";
 import { API } from "../lib/api";