diff --git a/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer-file-tree.tsx b/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer-file-tree.tsx
index e84d506c16..80c9c97b3a 100644
--- a/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer-file-tree.tsx
+++ b/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer-file-tree.tsx
@@ -74,7 +74,13 @@ export function DiffViewerFileTree(props: DiffViewerFileTreeProps) {
                       {`${"  ".repeat(row.depth)}${row.kind === "directory" ? (props.expandedNodes && !props.expandedNodes.has(row.id) ? "▸ " : "▾ ") : "  "}`}
                     </text>
                     <text
-                      fg={highlighted() ? props.theme.background : row.kind === "directory" ? props.theme.textMuted : props.theme.text}
+                      fg={
+                        highlighted()
+                          ? props.theme.background
+                          : row.kind === "directory"
+                            ? props.theme.textMuted
+                            : props.theme.text
+                      }
                       bg={highlighted() ? props.theme.primary : undefined}
                       wrapMode="none"
                     >
diff --git a/packages/opencode/src/cli/cmd/tui/plugin/internal.ts b/packages/opencode/src/cli/cmd/tui/plugin/internal.ts
index 6d3727399b..2ba8e745b5 100644
--- a/packages/opencode/src/cli/cmd/tui/plugin/internal.ts
+++ b/packages/opencode/src/cli/cmd/tui/plugin/internal.ts
@@ -20,7 +20,9 @@ export type InternalTuiPlugin = Omit<TuiPluginModule, "id"> & {
   enabled?: boolean
 }
 
-export function internalTuiPlugins(flags: Pick<RuntimeFlags.Info, "diffViewer" | "experimentalEventSystem">): InternalTuiPlugin[] {
+export function internalTuiPlugins(
+  flags: Pick<RuntimeFlags.Info, "diffViewer" | "experimentalEventSystem">,
+): InternalTuiPlugin[] {
   return [
     HomeFooter,
     HomeTips,
diff --git a/packages/opencode/test/cli/tui/diff-viewer-file-tree-utils.test.ts b/packages/opencode/test/cli/tui/diff-viewer-file-tree-utils.test.ts
index cd42edba11..755a25845f 100644
--- a/packages/opencode/test/cli/tui/diff-viewer-file-tree-utils.test.ts
+++ b/packages/opencode/test/cli/tui/diff-viewer-file-tree-utils.test.ts
@@ -76,28 +76,22 @@ describe("diff viewer file tree utilities", () => {
 
   test("flattens all-expanded rows depth-first with depths and file references", () => {
     const rows = flattenFileTree(
-      buildFileTree([
-        { file: "src/config/tui.ts" },
-        { file: "src/config/keybind.ts" },
-        { file: "README.md" },
-      ]),
+      buildFileTree([{ file: "src/config/tui.ts" }, { file: "src/config/keybind.ts" }, { file: "README.md" }]),
     )
 
-    expect(rows.map((row) => ({ name: row.name, kind: row.kind, depth: row.depth, fileIndex: row.fileIndex }))).toEqual([
-      { name: "src", kind: "directory", depth: 0, fileIndex: undefined },
-      { name: "config", kind: "directory", depth: 1, fileIndex: undefined },
-      { name: "keybind.ts", kind: "file", depth: 2, fileIndex: 1 },
-      { name: "tui.ts", kind: "file", depth: 2, fileIndex: 0 },
-      { name: "README.md", kind: "file", depth: 0, fileIndex: 2 },
-    ])
+    expect(rows.map((row) => ({ name: row.name, kind: row.kind, depth: row.depth, fileIndex: row.fileIndex }))).toEqual(
+      [
+        { name: "src", kind: "directory", depth: 0, fileIndex: undefined },
+        { name: "config", kind: "directory", depth: 1, fileIndex: undefined },
+        { name: "keybind.ts", kind: "file", depth: 2, fileIndex: 1 },
+        { name: "tui.ts", kind: "file", depth: 2, fileIndex: 0 },
+        { name: "README.md", kind: "file", depth: 0, fileIndex: 2 },
+      ],
+    )
   })
 
   test("flattens only expanded directory descendants when expansion is provided", () => {
-    const tree = buildFileTree([
-      { file: "src/config/tui.ts" },
-      { file: "src/session/index.ts" },
-      { file: "README.md" },
-    ])
+    const tree = buildFileTree([{ file: "src/config/tui.ts" }, { file: "src/session/index.ts" }, { file: "README.md" }])
     const src = tree.nodes.find((node) => node.kind === "directory" && node.name === "src")!
     const config = tree.nodes.find((node) => node.kind === "directory" && node.name === "config")!
 
@@ -129,11 +123,7 @@ describe("diff viewer file tree utilities", () => {
 
   test("moves file selection relative to the highlighted row", () => {
     const rows = flattenFileTree(
-      buildFileTree([
-        { file: "src/config/tui.ts" },
-        { file: "src/session/index.ts" },
-        { file: "README.md" },
-      ]),
+      buildFileTree([{ file: "src/config/tui.ts" }, { file: "src/session/index.ts" }, { file: "README.md" }]),
     )
     const config = rows.find((row) => row.kind === "directory" && row.name === "config")!
     const session = rows.find((row) => row.kind === "directory" && row.name === "session")!
diff --git a/packages/opencode/test/cli/tui/diff-viewer-file-tree.test.tsx b/packages/opencode/test/cli/tui/diff-viewer-file-tree.test.tsx
index b1cc7685a8..6bbe5abb02 100644
--- a/packages/opencode/test/cli/tui/diff-viewer-file-tree.test.tsx
+++ b/packages/opencode/test/cli/tui/diff-viewer-file-tree.test.tsx
@@ -45,26 +45,22 @@ describe("DiffViewerFileTree", () => {
       await app.renderOnce()
       const lines = visibleLines(app.captureCharFrame())
 
-      expect(lines).toEqual([
-        "▾ a",
-        "    alpha.ts",
-        "    zeta.ts",
-        "▾ b",
-        "    alpha.ts",
-        "    file.ts",
-        "  z-file.ts",
-      ])
+      expect(lines).toEqual(["▾ a", "    alpha.ts", "    zeta.ts", "▾ b", "    alpha.ts", "    file.ts", "  z-file.ts"])
     } finally {
       app.renderer.destroy()
     }
   })
 
   test("keeps loading and error quiet while rendering an empty settled state", async () => {
-    const loading = await renderFrame(() => <DiffViewerFileTree files={[]} loading={true} error={undefined} theme={theme} />)
+    const loading = await renderFrame(() => (
+      <DiffViewerFileTree files={[]} loading={true} error={undefined} theme={theme} />
+    ))
     const failed = await renderFrame(() => (
       <DiffViewerFileTree files={[]} loading={false} error={new Error("nope")} theme={theme} />
     ))
-    const empty = await renderFrame(() => <DiffViewerFileTree files={[]} loading={false} error={undefined} theme={theme} />)
+    const empty = await renderFrame(() => (
+      <DiffViewerFileTree files={[]} loading={false} error={undefined} theme={theme} />
+    ))
 
     expect(loading).not.toContain("Loading diff...")
     expect(loading).not.toContain("No files")
@@ -79,7 +75,14 @@ describe("DiffViewerFileTree", () => {
 
     const focused = visibleLines(
       await renderFrame(() => (
-        <DiffViewerFileTree files={files} loading={false} error={undefined} theme={theme} focused highlightedNode={src.id} />
+        <DiffViewerFileTree
+          files={files}
+          loading={false}
+          error={undefined}
+          theme={theme}
+          focused
+          highlightedNode={src.id}
+        />
       )),
     )
     const unfocused = visibleLines(