diff --git a/src/approvals/model.ts b/src/approvals/model.ts
index 7a360fc4..47885c62 100644
--- a/src/approvals/model.ts
+++ b/src/approvals/model.ts
@@ -133,9 +133,9 @@ function approvalSummaryParts(approval: PendingApproval): ApprovalSummaryParts {
   return summaryParts(reason, null, fallback);
 }
 
-export function approvalDetails(approval: PendingApproval): Array<{ key: string; value: string }> {
+export function approvalDetails(approval: PendingApproval): { key: string; value: string }[] {
   const params = approval.params as Record<string, unknown>;
-  const rows: Array<{ key: string; value: string }> = [];
+  const rows: { key: string; value: string }[] = [];
   addOptional(rows, "reason", params.reason);
   addOptional(rows, "command", Array.isArray(params.command) ? params.command.join(" ") : params.command);
   addOptional(rows, "cwd", params.cwd);
diff --git a/src/approvals/permission-details.ts b/src/approvals/permission-details.ts
index e7130f7a..41a73817 100644
--- a/src/approvals/permission-details.ts
+++ b/src/approvals/permission-details.ts
@@ -14,7 +14,7 @@ export function permissionRows(value: unknown): DetailRow[] {
   const fileSystem = permissions.fileSystem as {
     read?: unknown;
     write?: unknown;
-    entries?: Array<{ path?: unknown; access?: unknown }>;
+    entries?: { path?: unknown; access?: unknown }[];
     globScanMaxDepth?: unknown;
   } | null;
   if (!fileSystem || typeof fileSystem !== "object") return rows;
diff --git a/src/composer/slash-commands.ts b/src/composer/slash-commands.ts
index 526224b4..b3f0e48c 100644
--- a/src/composer/slash-commands.ts
+++ b/src/composer/slash-commands.ts
@@ -25,6 +25,6 @@ export function slashCommandHelpLines(): string[] {
   return SLASH_COMMANDS.map((item) => `${item.command} - ${item.detail}`);
 }
 
-export function slashCommandHelpRows(): Array<{ key: string; value: string }> {
+export function slashCommandHelpRows(): { key: string; value: string }[] {
   return SLASH_COMMANDS.map((item) => ({ key: item.command, value: item.detail }));
 }
diff --git a/src/display/review.ts b/src/display/review.ts
index e493a36e..1b85f771 100644
--- a/src/display/review.ts
+++ b/src/display/review.ts
@@ -59,7 +59,7 @@ export function createAutoReviewResultItem(params: AutoReviewNotification): Disp
 
 function parseAutomaticApprovalReviewMessage(
   text: string,
-): { status: string; summary: string; rows: Array<{ key: string; value: string }> } | null {
+): { status: string; summary: string; rows: { key: string; value: string }[] } | null {
   const match = /^Automatic approval review\s+([a-zA-Z][\w-]*)(?:\s+\(([^)]*)\))?:\s*(.+)$/i.exec(text.trim());
   if (!match) return null;
 
diff --git a/src/display/thread-items.ts b/src/display/thread-items.ts
index 2537e365..2fb5aea2 100644
--- a/src/display/thread-items.ts
+++ b/src/display/thread-items.ts
@@ -419,7 +419,7 @@ function webSearchQueryList(
 }
 
 function webSearchDetails(item: WebSearchItem): DisplayDetailSection[] {
-  const rows: Array<{ key: string; value: string }> = [];
+  const rows: { key: string; value: string }[] = [];
   if (item.action) rows.push({ key: "action", value: webSearchActionLabel(item.action.type) });
   if (item.action?.type === "search") {
     const queries = webSearchQueryList(item.action.query, item.action.queries, item.query);
diff --git a/src/display/tool-format.ts b/src/display/tool-format.ts
index c8bc1c62..0626fffc 100644
--- a/src/display/tool-format.ts
+++ b/src/display/tool-format.ts
@@ -33,7 +33,7 @@ export function jsonDetail(title: string, value: unknown): DisplayDetailSection[
   return value === null || value === undefined ? [] : [{ title, body: jsonPreview(value) }];
 }
 
-export function jsonDetails(entries: Array<[title: string, value: unknown]>): DisplayDetailSection[] {
+export function jsonDetails(entries: [title: string, value: unknown][]): DisplayDetailSection[] {
   return entries.flatMap(([title, value]) => jsonDetail(title, value));
 }
 
diff --git a/src/display/tool-view.ts b/src/display/tool-view.ts
index e9843581..ce0f1312 100644
--- a/src/display/tool-view.ts
+++ b/src/display/tool-view.ts
@@ -20,7 +20,7 @@ export type ToolResultDisplayItem =
   | ReviewResultDisplayItem;
 
 export type ToolResultDetailSection =
-  | { kind: "meta"; title?: string; rows: Array<{ key: string; value: string }> }
+  | { kind: "meta"; title?: string; rows: { key: string; value: string }[] }
   | { kind: "output"; title: string; body: string }
   | { kind: "diff"; title: string; diff: string };
 
@@ -159,7 +159,7 @@ function outputSection(title: string, body: string | null | undefined): ToolResu
   return body ? [{ kind: "output", title, body }] : [];
 }
 
-function fileChangeSummary(item: DisplayItem, changes: Array<DisplayFileChange & { displayPath: string }>): string {
+function fileChangeSummary(item: DisplayItem, changes: (DisplayFileChange & { displayPath: string })[]): string {
   if (item.kind !== "fileChange") return item.text;
   if (changes.length === 0) return item.text;
   if (changes.length > 1) return item.text;
diff --git a/src/runtime/view.ts b/src/runtime/view.ts
index fed0fdc1..940f177e 100644
--- a/src/runtime/view.ts
+++ b/src/runtime/view.ts
@@ -41,7 +41,7 @@ export interface RateLimitSummaryRow {
 
 export interface EffectiveConfigSection {
   title: string;
-  rows: Array<{ key: string; value: string }>;
+  rows: { key: string; value: string }[];
 }
 
 export function contextSummary(snapshot: RuntimeSnapshot): ContextSummary | null {
diff --git a/src/ui/tool-result.ts b/src/ui/tool-result.ts
index 982cfc5f..5a3a45dc 100644
--- a/src/ui/tool-result.ts
+++ b/src/ui/tool-result.ts
@@ -75,7 +75,7 @@ function renderDetailSection(parent: HTMLElement, section: ToolResultDetailSecti
   renderOutputBlock(parent, section.title, section.body);
 }
 
-function renderMetaBlock(parent: HTMLElement, title: string | undefined, rows: Array<{ key: string; value: string }>): void {
+function renderMetaBlock(parent: HTMLElement, title: string | undefined, rows: { key: string; value: string }[]): void {
   const section = title ? renderOutputSection(parent, title, "codex-panel__output codex-panel__output--meta") : parent;
   const meta = section.createEl("dl", { cls: "codex-panel__meta-grid" });
   for (const row of rows) {
diff --git a/tests/approvals/approvals.test.ts b/tests/approvals/approvals.test.ts
index 90fe49de..bee630d1 100644
--- a/tests/approvals/approvals.test.ts
+++ b/tests/approvals/approvals.test.ts
@@ -185,7 +185,7 @@ describe("approval model", () => {
   });
 
   it("builds action responses for current approval families", () => {
-    const requests: Array<{ request: ServerRequest; acceptSession: unknown; cancel: unknown }> = [
+    const requests: { request: ServerRequest; acceptSession: unknown; cancel: unknown }[] = [
       {
         request: {
           id: 3,
diff --git a/tests/composer/obsidian-context.test.ts b/tests/composer/obsidian-context.test.ts
index 97bcb0b4..f6bfc859 100644
--- a/tests/composer/obsidian-context.test.ts
+++ b/tests/composer/obsidian-context.test.ts
@@ -57,7 +57,7 @@ function appFixture(options: {
   activePath?: string;
   linkDestination?: TFile | null;
   getFirstLinkpathDest?: (target: string, sourcePath: string) => TFile | null;
-  markdownFiles?: Array<{ basename: string; path: string; stat: { mtime: number } }>;
+  markdownFiles?: { basename: string; path: string; stat: { mtime: number } }[];
   abstractFiles?: Map<string, TFile>;
 }): App {
   return {
diff --git a/tests/panel/thread-naming.test.ts b/tests/panel/thread-naming.test.ts
index 70cf8b59..9bb68047 100644
--- a/tests/panel/thread-naming.test.ts
+++ b/tests/panel/thread-naming.test.ts
@@ -67,7 +67,7 @@ describe("thread naming", () => {
   });
 
   it("scans older thread pages until it finds a usable naming context", async () => {
-    const calls: Array<{ cursor: string | null; limit: number; sortDirection: string }> = [];
+    const calls: { cursor: string | null; limit: number; sortDirection: string }[] = [];
     const context = await findThreadNamingContext({
       threadId: "thread",
       pageLimit: 2,
diff --git a/tests/ui/dom-test-helpers.ts b/tests/ui/dom-test-helpers.ts
index f859560a..41f05188 100644
--- a/tests/ui/dom-test-helpers.ts
+++ b/tests/ui/dom-test-helpers.ts
@@ -90,7 +90,13 @@ export function installObsidianDomShims(): void {
   });
 }
 
-export function topLevelDetailsSummaries(element: HTMLElement): Array<string | null> {
+function nodeConstructor(): typeof Node {
+  const defaultView = document.defaultView;
+  if (defaultView === null) throw new Error("Expected document.defaultView to install Obsidian DOM helpers.");
+  return (globalThis as typeof globalThis & { Node?: typeof Node }).Node ?? defaultView.Node;
+}
+
+export function topLevelDetailsSummaries(element: HTMLElement): (string | null)[] {
   const candidates = [element, ...element.children];
   return candidates
     .filter((child): child is HTMLDetailsElement => child instanceof HTMLDetailsElement)