fix(search): clean up node/property search matches

- add tests for notes, property key/value, hidden-property exclusion, matched-value display
- fix flatMap indentation and stray semicolon
- use stable match key instead of display_value (avoids dup-key collisions)
- keep label searchable but not repeated in matched-values column

frontend/src/components/canvas/SearchBar.tsx

@@ -52,8 +52,11 @@ export function SearchBar({ onOpenPending }: SearchBarProps) {
 
         const matches: Array<{ key: string; display_value: string }> = []
 
+        // Label matches make the node a result, but it is already shown in the
+        // header — don't repeat it in the matched-values column.
+        const labelMatch = contains(n.data.label)
+
         for (const [key, value] of [
-        ['label', n.data.label],
           ['notes', n.data.notes],
           ['ip', n.data.ip],
           ['hostname', n.data.hostname],
@@ -78,10 +81,9 @@ export function SearchBar({ onOpenPending }: SearchBarProps) {
           }
         }
 
-      return matches.length > 0 ? [{ node: n, matches: matches }] : []
+        return labelMatch || matches.length > 0 ? [{ node: n, matches }] : []
       })
-  : [];
-    
+    : []
 
   const pendingResults = q
     ? pendingDevices.filter((d) =>
@@ -193,8 +195,8 @@ export function SearchBar({ onOpenPending }: SearchBarProps) {
                 </span>
                 {n.matches.length > 0 && (
                   <span style={{ maxWidth: "50%", display: 'flex', flexDirection: 'column', gap: 2, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
-                    {n.matches.map((m) => (
-                      <span key={m.display_value} style={{ fontSize: 11, color: '#8b949e', fontFamily: 'JetBrains Mono, monospace', flexShrink: 0, display: 'inline-block' }}>
+                    {n.matches.map((m, mIdx) => (
+                      <span key={`${m.key}-${mIdx}`} style={{ fontSize: 11, color: '#8b949e', fontFamily: 'JetBrains Mono, monospace', flexShrink: 0, display: 'inline-block' }}>
                         {m.display_value}
                       </span>
                     ))}

frontend/src/components/canvas/__tests__/SearchBar.test.tsx

@@ -103,6 +103,50 @@ describe('SearchBar', () => {
     expect(screen.queryByText('DB Server')).toBeNull()
   })
 
+  it('filters by notes', () => {
+    setupStore([
+      makeNode('n1', { data: { label: 'Server A', type: 'server', status: 'online', services: [], ip: null, hostname: null, notes: 'backup target every night' } }),
+      makeNode('n2', { data: { label: 'Server B', type: 'server', status: 'online', services: [], ip: null, hostname: null, notes: 'primary web host' } }),
+    ])
+    render(<SearchBar />)
+    openSearch()
+    fireEvent.change(screen.getByPlaceholderText(/search/i), { target: { value: 'backup' } })
+    expect(screen.getByText('Server A')).toBeDefined()
+    expect(screen.queryByText('Server B')).toBeNull()
+  })
+
+  it('filters by visible property key or value', () => {
+    setupStore([
+      makeNode('n1', { data: { label: 'Server A', type: 'server', status: 'online', services: [], ip: null, hostname: null, properties: [{ key: 'rack', value: 'B12', icon: null, visible: true }] } }),
+      makeNode('n2', { data: { label: 'Server B', type: 'server', status: 'online', services: [], ip: null, hostname: null, properties: [{ key: 'rack', value: 'A01', icon: null, visible: true }] } }),
+    ])
+    render(<SearchBar />)
+    openSearch()
+    fireEvent.change(screen.getByPlaceholderText(/search/i), { target: { value: 'b12' } })
+    expect(screen.getByText('Server A')).toBeDefined()
+    expect(screen.queryByText('Server B')).toBeNull()
+  })
+
+  it('ignores hidden properties', () => {
+    setupStore([
+      makeNode('n1', { data: { label: 'Server A', type: 'server', status: 'online', services: [], ip: null, hostname: null, properties: [{ key: 'secret', value: 'hidden-val', icon: null, visible: false }] } }),
+    ])
+    render(<SearchBar />)
+    openSearch()
+    fireEvent.change(screen.getByPlaceholderText(/search/i), { target: { value: 'hidden-val' } })
+    expect(screen.queryByText('Server A')).toBeNull()
+  })
+
+  it('shows the matched value alongside the node label', () => {
+    setupStore([
+      makeNode('n1', { data: { label: 'Server A', type: 'server', status: 'online', services: [], ip: null, hostname: null, properties: [{ key: 'rack', value: 'B12', icon: null, visible: true }] } }),
+    ])
+    render(<SearchBar />)
+    openSearch()
+    fireEvent.change(screen.getByPlaceholderText(/search/i), { target: { value: 'b12' } })
+    expect(screen.getByText('rack = B12')).toBeDefined()
+  })
+
   it('excludes groupRect nodes from results', () => {
     setupStore([
       makeNode('gr1', { data: { label: 'DMZ Zone', type: 'groupRect', status: 'unknown', services: [], ip: null, hostname: null } }),