feat(notes): wire backend note search

web/src/app/(app)/search/page.test.tsx

@@ -2,7 +2,7 @@ import { render, screen } from "@testing-library/react";
 import { describe, expect, it, vi } from "vitest";
 import SearchPage from "./page";
 
-const listNoteSummariesMock = vi.fn();
+const searchNoteSummariesMock = vi.fn();
 
 vi.mock("next/link", () => ({
   default: ({ href, children, ...props }: React.ComponentProps<"a"> & { href: string }) => (
@@ -13,12 +13,12 @@ vi.mock("next/link", () => ({
 }));
 
 vi.mock("@/lib/notes-client", () => ({
-  listNoteSummaries: () => listNoteSummariesMock(),
+  searchNoteSummaries: () => searchNoteSummariesMock(),
 }));
 
 describe("SearchPage", () => {
   it("renders an accessible search field, saved searches, and note links", async () => {
-    listNoteSummariesMock.mockResolvedValue([
+    searchNoteSummariesMock.mockResolvedValue([
       {
         id: "note-prd-cutline",
         workspaceId: "workspace-product",

web/src/app/(app)/search/page.tsx

@@ -1,9 +1,9 @@
 "use client";
 
 import Link from "next/link";
-import { useEffect, useMemo, useState } from "react";
+import { useEffect, useState } from "react";
 import { AppShell } from "@/components/AppShell";
-import { listNoteSummaries } from "@/lib/notes-client";
+import { searchNoteSummaries } from "@/lib/notes-client";
 import type { NoteSummary } from "@/lib/types";
 
 export default function SearchPage() {
@@ -12,27 +12,21 @@ export default function SearchPage() {
   const [error, setError] = useState<string | null>(null);
 
   useEffect(() => {
-    void (async () => {
-      try {
-        setNotes(await listNoteSummaries());
-      } catch (err) {
-        setError(err instanceof Error ? err.message : "Unable to load notes");
-      }
-    })();
-  }, []);
+    const timeout = window.setTimeout(() => {
+      void (async () => {
+        try {
+          setNotes(await searchNoteSummaries(query));
+          setError(null);
+        } catch (err) {
+          setError(err instanceof Error ? err.message : "Unable to load notes");
+        }
+      })();
+    }, 150);
 
-  const filteredNotes = useMemo(() => {
-    const normalized = query.trim().toLowerCase();
-    if (!normalized) {
-      return notes;
-    }
-
-    return notes.filter((note) =>
-      note.title.toLowerCase().includes(normalized) ||
-      note.excerpt.toLowerCase().includes(normalized) ||
-      note.tags.some((tag) => tag.toLowerCase().includes(normalized)),
-    );
-  }, [notes, query]);
+    return () => {
+      window.clearTimeout(timeout);
+    };
+  }, [query]);
 
   const savedViews = [
     {
@@ -57,7 +51,7 @@ export default function SearchPage() {
     <AppShell
       title="Search"
       description="Lexical search, tag filtering, and retrieval entry points. Semantic ranking and explainability remain follow-up work."
-      actions={<div className="badge">Dense retrieval shell</div>}
+      actions={<div className="badge">Backend-backed note search</div>}
     >
       <section style={{ display: "grid", gridTemplateColumns: "minmax(260px, 320px) minmax(0, 1fr)", gap: "var(--ml-space-4)" }}>
         <aside className="surface-card" style={{ padding: "var(--ml-space-5)", display: "grid", gap: "var(--ml-space-4)" }}>
@@ -93,11 +87,11 @@ export default function SearchPage() {
             <span className="badge">workspace:all</span>
             <span className="badge">status:active</span>
             <span className="badge">source:manual+agent</span>
-            <span className="badge">matched:title+tags</span>
+            <span className="badge">matched:title+body</span>
           </div>
           {error ? <div style={{ color: "var(--ml-text-secondary)" }}>{error}</div> : null}
           <div style={{ display: "grid", gap: "var(--ml-space-3)" }}>
-            {filteredNotes.map((note) => (
+            {notes.map((note) => (
               <Link key={note.id} href={`/notes/${note.id}`} className="surface-muted" style={{ padding: "var(--ml-space-4)", display: "grid", gap: "var(--ml-space-2)" }}>
                 <div style={{ display: "grid", gridTemplateColumns: "minmax(0, 1.5fr) repeat(3, minmax(100px, auto))", gap: "var(--ml-space-3)", alignItems: "start" }}>
                   <div style={{ display: "grid", gap: "var(--ml-space-2)" }}>

web/src/lib/notes-client.ts

@@ -240,6 +240,14 @@ export async function listNoteSummaries(): Promise<NoteSummary[]> {
   return response.items.map(toNoteSummary);
 }
 
+export async function searchNoteSummaries(query: string): Promise<NoteSummary[]> {
+  const api = createNotesApiClient();
+  const search = query.trim();
+  const path = search ? `/notes?search=${encodeURIComponent(search)}` : "/notes";
+  const response = await api.fetch<NoteListResponse>(path);
+  return response.items.map(toNoteSummary);
+}
+
 export async function listNotesForWorkspace(workspaceId: string): Promise<NoteSummary[]> {
   const api = createNotesApiClient();
   const response = await api.fetch<NoteListResponse>(`/notes?workspaceId=${encodeURIComponent(workspaceId)}`);