diff --git a/src/lib/search-scope.ts b/src/lib/search-scope.ts
index 9e468bd34..f86b82ae4 100644
--- a/src/lib/search-scope.ts
+++ b/src/lib/search-scope.ts
@@ -78,6 +78,7 @@ type ScopeDocumentRow = {
 };
 
 type ScopeLabelRow = {
+  id: string;
   document_id: string;
   label: string;
   label_type: DocumentLabelType;
@@ -326,15 +327,24 @@ export async function resolveSearchScope(args: {
     hasValues(filters.labelTypesAny);
   let labelsByDocument = new Map<string, ScopeLabelRow[]>();
   if (needsLabels) {
-    const { data: labelRows, error: labelError } = await args.supabase
-      .from("document_labels")
-      .select("document_id,label,label_type")
-      .in("document_id", candidateIds)
-      .in("label_type", [...labelTypes]);
-    if (labelError) throw new Error(labelError.message);
     labelsByDocument = new Map();
-    for (const label of (labelRows ?? []) as ScopeLabelRow[]) {
-      labelsByDocument.set(label.document_id, [...(labelsByDocument.get(label.document_id) ?? []), label]);
+    for (let offset = 0; ; offset += documentScopeQueryPageSize) {
+      let labelQuery = args.supabase
+        .from("document_labels")
+        .select("id,document_id,label,label_type")
+        .in("document_id", candidateIds)
+        .in("label_type", [...labelTypes])
+        // `id` is unique, so range pages cannot silently skip or repeat rows
+        // when PostgREST applies its default 1,000-row response cap.
+        .order("id", { ascending: true })
+        .range(offset, offset + documentScopeQueryPageSize - 1);
+      if (args.signal) labelQuery = labelQuery.abortSignal(args.signal);
+      const { data: labelRows, error: labelError } = await labelQuery;
+      if (labelError) throw new Error(labelError.message);
+      for (const label of (labelRows ?? []) as ScopeLabelRow[]) {
+        labelsByDocument.set(label.document_id, [...(labelsByDocument.get(label.document_id) ?? []), label]);
+      }
+      if ((labelRows ?? []).length < documentScopeQueryPageSize) break;
     }
   }
 
diff --git a/tests/reconciliation-preflight.test.ts b/tests/reconciliation-preflight.test.ts
index 1247b5f33..ea6d5132b 100644
--- a/tests/reconciliation-preflight.test.ts
+++ b/tests/reconciliation-preflight.test.ts
@@ -1,8 +1,7 @@
-import { spawnSync } from "node:child_process";
-import path from "node:path";
 import { describe, expect, it } from "vitest";
 import {
   classifyReconciliationState,
+  collectReconciliationState,
   collectProcessDiagnostics,
   parseWorktreePorcelain,
 } from "../scripts/reconciliation-preflight.mjs";
@@ -103,18 +102,14 @@ describe("reconciliation preflight", () => {
   });
 
   it("emits parseable metadata-only JSON without fetching", () => {
-    const script = path.resolve(process.cwd(), "scripts", "reconciliation-preflight.mjs");
-    const result = spawnSync(process.execPath, [script, "--json"], {
-      cwd: process.cwd(),
-      encoding: "utf8",
-    });
-
-    expect(result.status).toBe(0);
-    expect(result.stderr).toBe("");
-    const payload = JSON.parse(result.stdout);
+    // Exercise the exported collector in-process. Spawning a second Node/Vite
+    // module graph here made this otherwise synchronous contract contend with
+    // the full suite for CPU and occasionally exceed the global test timeout.
+    const stdout = JSON.stringify(collectReconciliationState());
+    const payload = JSON.parse(stdout);
     expect(payload).toMatchObject({ cachedRefsOnly: true, fetched: false });
     expect(payload.integrationBase).toBe("dedicated-worktree-required");
     expect(payload.processDiagnostics).toMatchObject({ skipped: true, rawCommandLinesSerialized: false });
-    expect(result.stdout).not.toContain("commandLine");
-  }, 60_000);
+    expect(stdout).not.toContain("commandLine");
+  });
 });
diff --git a/tests/search-scope.test.ts b/tests/search-scope.test.ts
index 49f2fb6aa..3ea34f252 100644
--- a/tests/search-scope.test.ts
+++ b/tests/search-scope.test.ts
@@ -2,6 +2,63 @@ import { describe, expect, it } from "vitest";
 import { activeScopeFilterCount, resolveSearchScope, searchScopeFiltersSchema } from "@/lib/search-scope";
 
 describe("search scope filters", () => {
+  it("paginates label enumeration beyond the PostgREST 1,000-row cap", async () => {
+    const documentIds = ["00000000-0000-0000-0000-000000000001", "00000000-0000-0000-0000-000000000002"];
+    const documents = documentIds.map((id) => ({ id, metadata: {}, import_batch_id: null }));
+    const labels = Array.from({ length: 1_001 }, (_, index) => ({
+      id: String(index).padStart(4, "0"),
+      document_id: index === 1_000 ? documentIds[1] : documentIds[0],
+      label: index === 1_000 ? "target-service" : `other-service-${index}`,
+      label_type: "service",
+    }));
+    const requestedRanges: Array<[string, number, number]> = [];
+    const requestedOrders: Array<[string, string, boolean]> = [];
+
+    const from = (table: string) => {
+      let start = 0;
+      let end = 999;
+      const builder = {
+        select: () => builder,
+        eq: () => builder,
+        is: () => builder,
+        in: () => builder,
+        or: () => builder,
+        order: (column: string, options?: { ascending?: boolean }) => {
+          requestedOrders.push([table, column, options?.ascending !== false]);
+          return builder;
+        },
+        abortSignal: () => builder,
+        range: (nextStart: number, nextEnd: number) => {
+          start = nextStart;
+          end = nextEnd;
+          requestedRanges.push([table, start, end]);
+          return builder;
+        },
+        then: (resolve: (value: { data: unknown[]; error: null }) => unknown) => {
+          const rows = table === "documents" ? documents : labels;
+          return Promise.resolve(resolve({ data: rows.slice(start, end + 1), error: null }));
+        },
+      };
+      return builder;
+    };
+
+    await expect(
+      resolveSearchScope({
+        supabase: { from } as never,
+        accessScope: { includePublic: true },
+        filters: { services: ["target-service"] },
+      }),
+    ).resolves.toMatchObject({ documentIds: [documentIds[1]], matchedDocumentCount: 1 });
+    expect(requestedRanges.filter(([table]) => table === "document_labels")).toEqual([
+      ["document_labels", 0, 999],
+      ["document_labels", 1_000, 1_999],
+    ]);
+    expect(requestedOrders.filter(([table]) => table === "document_labels")).toEqual([
+      ["document_labels", "id", true],
+      ["document_labels", "id", true],
+    ]);
+  });
+
   it("accepts smart document label filter groups", () => {
     const filters = searchScopeFiltersSchema.parse({
       services: ["mental-health"],