diff --git a/src/shared/components/layouts/DashboardLayout.tsx b/src/shared/components/layouts/DashboardLayout.tsx
index 505f5279c0..1016e7daa1 100644
--- a/src/shared/components/layouts/DashboardLayout.tsx
+++ b/src/shared/components/layouts/DashboardLayout.tsx
@@ -21,14 +21,15 @@ export default function DashboardLayout({ children }) {
   const [sidebarOpen, setSidebarOpen] = useState(false);
   const [commandPaletteOpen, setCommandPaletteOpen] = useState(false);
   const isElectron = useIsElectron();
-  const [collapsed, setCollapsed] = useState(() => {
-    if (typeof globalThis.window === "undefined") return false;
+  const [collapsed, setCollapsed] = useState(false);
+
+  useEffect(() => {
     try {
-      return localStorage.getItem(SIDEBAR_COLLAPSED_KEY) === "true";
-    } catch {
-      return false;
-    }
-  });
+      if (localStorage.getItem(SIDEBAR_COLLAPSED_KEY) === "true") {
+        setTimeout(() => setCollapsed(true), 0);
+      }
+    } catch {}
+  }, []);
 
   const isMacElectron =
     isElectron &&
diff --git a/src/shared/components/lobeProviderIcons.ts b/src/shared/components/lobeProviderIcons.ts
index 1da9c26e5b..435450ca3c 100644
--- a/src/shared/components/lobeProviderIcons.ts
+++ b/src/shared/components/lobeProviderIcons.ts
@@ -140,7 +140,7 @@ import SenseNovaColorIcon from "@lobehub/icons/es/SenseNova/components/Color";
 import SenseNovaMonoIcon from "@lobehub/icons/es/SenseNova/components/Mono";
 import StabilityColorIcon from "@lobehub/icons/es/Stability/components/Color";
 import StabilityMonoIcon from "@lobehub/icons/es/Stability/components/Mono";
-import StepfunColorIcon from "@lobehub/icons/es/Stepfun/components/Color";
+// Stepfun has no Color component in the installed @lobehub/icons version; use Mono as fallback
 import StepfunMonoIcon from "@lobehub/icons/es/Stepfun/components/Mono";
 import SunoMonoIcon from "@lobehub/icons/es/Suno/components/Mono";
 import TavilyColorIcon from "@lobehub/icons/es/Tavily/components/Color";
@@ -281,7 +281,7 @@ const LOBE_ICON_COMPONENTS = {
   SenseNova: { mono: SenseNovaMonoIcon, color: SenseNovaColorIcon },
   Snowflake: { mono: SnowflakeMonoIcon, color: SnowflakeColorIcon },
   Stability: { mono: StabilityMonoIcon, color: StabilityColorIcon },
-  Stepfun: { mono: StepfunMonoIcon, color: StepfunColorIcon },
+  Stepfun: { mono: StepfunMonoIcon, color: StepfunMonoIcon },
   Suno: { mono: SunoMonoIcon },
   Tavily: { mono: TavilyMonoIcon, color: TavilyColorIcon },
   Tencent: { mono: TencentMonoIcon, color: TencentColorIcon },
diff --git a/tests/unit/stepfun-mono-fallback-and-sidebar-hydration-7743.test.ts b/tests/unit/stepfun-mono-fallback-and-sidebar-hydration-7743.test.ts
new file mode 100644
index 0000000000..9c766c83ca
--- /dev/null
+++ b/tests/unit/stepfun-mono-fallback-and-sidebar-hydration-7743.test.ts
@@ -0,0 +1,56 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import fs from "node:fs";
+
+// Regression guards for PR #7743:
+//  1) @lobehub/icons v5.13+ dropped the Stepfun `Color` sub-component. Importing it
+//     causes a build-time module-not-found error that breaks the whole dashboard.
+//     Lock in the Mono fallback so a future bump can't silently re-import it.
+//  2) DashboardLayout must not read localStorage synchronously during the initial
+//     `useState` render — that produces a client/server markup mismatch (hydration
+//     error) because the server always renders the `false` (collapsed=false) branch.
+//     The fix defers the localStorage read to a `useEffect`.
+
+const lobeProviderIconsSrc = fs.readFileSync(
+  new URL("../../src/shared/components/lobeProviderIcons.ts", import.meta.url),
+  "utf8"
+);
+
+const dashboardLayoutSrc = fs.readFileSync(
+  new URL("../../src/shared/components/layouts/DashboardLayout.tsx", import.meta.url),
+  "utf8"
+);
+
+test("lobeProviderIcons never imports the removed Stepfun Color sub-component", () => {
+  assert.doesNotMatch(
+    lobeProviderIconsSrc,
+    /@lobehub\/icons\/es\/Stepfun\/components\/Color/,
+    "Stepfun/components/Color does not exist in @lobehub/icons v5.13+ and must not be imported"
+  );
+});
+
+test("lobeProviderIcons maps both Stepfun mono and color slots to StepfunMonoIcon", () => {
+  const stepfunEntry = lobeProviderIconsSrc.match(/Stepfun:\s*{\s*mono:\s*(\w+),\s*color:\s*(\w+)\s*}/);
+  assert.ok(stepfunEntry, "Stepfun entry must exist in LOBE_ICON_COMPONENTS");
+  const [, mono, color] = stepfunEntry;
+  assert.equal(mono, "StepfunMonoIcon");
+  assert.equal(color, "StepfunMonoIcon", "color slot must fall back to the Mono icon");
+});
+
+test("DashboardLayout does not read localStorage synchronously inside the collapsed useState initializer", () => {
+  const collapsedStateMatch = dashboardLayoutSrc.match(/const \[collapsed, setCollapsed\] = useState\(([^)]*)\)/);
+  assert.ok(collapsedStateMatch, "collapsed useState declaration must exist");
+  assert.equal(
+    collapsedStateMatch[1].trim(),
+    "false",
+    "collapsed must initialize to a constant so server and first client render match (no hydration mismatch)"
+  );
+});
+
+test("DashboardLayout defers the sidebar-collapsed localStorage read to a useEffect", () => {
+  const effectIndex = dashboardLayoutSrc.indexOf("useEffect(() => {");
+  assert.ok(effectIndex >= 0, "a useEffect must exist");
+  const effectBody = dashboardLayoutSrc.slice(effectIndex, dashboardLayoutSrc.indexOf("}, []);", effectIndex));
+  assert.match(effectBody, /localStorage\.getItem\(SIDEBAR_COLLAPSED_KEY\)/);
+  assert.match(effectBody, /setCollapsed\(true\)/);
+});