feat: add queue filters and detail view

src/App.css

@@ -21,11 +21,19 @@
   font-size: 0.8rem;
 }
 
-h1 {
+h1,
+h2 {
   margin: 0;
+}
+
+h1 {
   font-size: 2.4rem;
 }
 
+h2 {
+  font-size: 1.1rem;
+}
+
 .subtitle {
   margin: 0.5rem 0 0;
   color: #94a3b8;
@@ -33,7 +41,9 @@ h1 {
 
 .meta-card,
 .banner,
-.table-card {
+.table-card,
+.detail-card,
+.filters-card {
   background: #111827;
   border: 1px solid #1f2937;
   border-radius: 16px;
@@ -59,6 +69,45 @@ h1 {
   color: #fecaca;
 }
 
+.filters-card {
+  padding: 1rem;
+  margin-bottom: 1rem;
+}
+
+.filter-grid {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 1rem;
+}
+
+label {
+  display: flex;
+  flex-direction: column;
+  gap: 0.45rem;
+  color: #cbd5e1;
+}
+
+label span {
+  font-size: 0.85rem;
+  color: #94a3b8;
+  text-transform: uppercase;
+  letter-spacing: 0.04em;
+}
+
+select {
+  background: #0b1220;
+  color: #e2e8f0;
+  border: 1px solid #334155;
+  border-radius: 10px;
+  padding: 0.7rem 0.85rem;
+}
+
+.content-grid {
+  display: grid;
+  grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
+  gap: 1rem;
+}
+
 .table-card {
   overflow: hidden;
 }
@@ -83,8 +132,13 @@ th {
   letter-spacing: 0.04em;
 }
 
-tr:hover td {
-  background: rgba(148, 163, 184, 0.06);
+tbody tr {
+  cursor: pointer;
+}
+
+tr:hover td,
+.selected-row td {
+  background: rgba(148, 163, 184, 0.08);
 }
 
 .sort-button {
@@ -109,6 +163,11 @@ tr:hover td {
   font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
 }
 
+.preserve {
+  white-space: pre-wrap;
+  word-break: break-word;
+}
+
 .status-badge {
   display: inline-flex;
   align-items: center;
@@ -127,6 +186,53 @@ tr:hover td {
 .status-completed { background: #064e3b; color: #a7f3d0; }
 .status-cancelled { background: #374151; color: #d1d5db; }
 
+.detail-card {
+  padding: 1rem;
+}
+
+.detail-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  margin-bottom: 1rem;
+}
+
+.detail-list {
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+  margin: 0;
+}
+
+.detail-row {
+  display: grid;
+  grid-template-columns: 120px 1fr;
+  gap: 0.75rem;
+  padding-top: 0.75rem;
+  border-top: 1px solid #1f2937;
+}
+
+.detail-row dt {
+  color: #94a3b8;
+}
+
+.detail-row dd {
+  margin: 0;
+}
+
+.empty-state,
+.empty-detail {
+  color: #94a3b8;
+  padding: 1rem;
+}
+
+@media (max-width: 1100px) {
+  .content-grid {
+    grid-template-columns: 1fr;
+  }
+}
+
 @media (max-width: 900px) {
   .app-shell {
     padding: 1rem;
@@ -137,6 +243,10 @@ tr:hover td {
     align-items: stretch;
   }
 
+  .filter-grid {
+    grid-template-columns: 1fr 1fr;
+  }
+
   .table-card {
     overflow-x: auto;
   }
@@ -144,4 +254,15 @@ tr:hover td {
   table {
     min-width: 760px;
   }
+
+  .detail-row {
+    grid-template-columns: 1fr;
+    gap: 0.35rem;
+  }
+}
+
+@media (max-width: 560px) {
+  .filter-grid {
+    grid-template-columns: 1fr;
+  }
 }

src/App.jsx

@@ -23,11 +23,19 @@ const columns = [
   { key: 'created_at', label: 'Created At' },
 ]
 
+const defaultFilters = {
+  status: '',
+  type: '',
+  priority: '',
+  agent: '',
+}
+
 function shortId(id) {
   return id.slice(0, 8)
 }
 
 function formatDate(value) {
+  if (!value) return '—'
   return new Date(value).toLocaleString()
 }
 
@@ -40,11 +48,28 @@ function compareValues(a, b, key) {
   return String(left).localeCompare(String(right))
 }
 
+function buildOptions(items, key) {
+  return [...new Set(items.map((item) => item[key]).filter(Boolean))].sort((a, b) =>
+    String(a).localeCompare(String(b)),
+  )
+}
+
+function DetailRow({ label, value, mono = false, preserve = false }) {
+  return (
+    <div className="detail-row">
+      <dt>{label}</dt>
+      <dd className={`${mono ? 'mono' : ''} ${preserve ? 'preserve' : ''}`}>{value || '—'}</dd>
+    </div>
+  )
+}
+
 function App() {
   const [items, setItems] = useState([])
   const [loading, setLoading] = useState(true)
   const [error, setError] = useState('')
   const [sort, setSort] = useState({ key: 'created_at', direction: 'desc' })
+  const [filters, setFilters] = useState(defaultFilters)
+  const [selectedId, setSelectedId] = useState('')
 
   useEffect(() => {
     let cancelled = false
@@ -57,6 +82,10 @@ function App() {
         if (!cancelled) {
           setItems(data)
           setError('')
+          setSelectedId((current) => {
+            if (current && data.some((item) => item.id === current)) return current
+            return data[0]?.id ?? ''
+          })
         }
       } catch (err) {
         if (!cancelled) setError(err.message || 'Failed to load queue')
@@ -73,10 +102,37 @@ function App() {
     }
   }, [])
 
+  const filterOptions = useMemo(
+    () => ({
+      statuses: buildOptions(items, 'status'),
+      types: buildOptions(items, 'type'),
+      priorities: buildOptions(items, 'priority'),
+      agents: buildOptions(items, 'assigned_agent'),
+    }),
+    [items],
+  )
+
+  const filteredItems = useMemo(
+    () =>
+      items.filter((item) => {
+        if (filters.status && item.status !== filters.status) return false
+        if (filters.type && item.type !== filters.type) return false
+        if (filters.priority && String(item.priority) !== String(filters.priority)) return false
+        if (filters.agent && item.assigned_agent !== filters.agent) return false
+        return true
+      }),
+    [items, filters],
+  )
+
   const sortedItems = useMemo(() => {
-    const next = [...items].sort((a, b) => compareValues(a, b, sort.key))
+    const next = [...filteredItems].sort((a, b) => compareValues(a, b, sort.key))
     return sort.direction === 'asc' ? next : next.reverse()
-  }, [items, sort])
+  }, [filteredItems, sort])
+
+  const selectedItem = useMemo(
+    () => sortedItems.find((item) => item.id === selectedId) || sortedItems[0] || null,
+    [sortedItems, selectedId],
+  )
 
   function toggleSort(key) {
     setSort((current) => ({
@@ -85,6 +141,10 @@ function App() {
     }))
   }
 
+  function updateFilter(key, value) {
+    setFilters((current) => ({ ...current, [key]: value }))
+  }
+
   return (
     <main className="app-shell">
       <header className="page-header">
@@ -94,7 +154,8 @@ function App() {
           <p className="subtitle">Live queue view for all dispatched agent work items.</p>
         </div>
         <div className="meta-card">
-          <span>{items.length} items</span>
+          <span>{filteredItems.length} visible items</span>
+          <span>{items.length} total items</span>
           <span>Polling every 10s</span>
         </div>
       </header>
@@ -102,6 +163,59 @@ function App() {
       {error && <div className="banner error">{error}</div>}
       {loading && <div className="banner">Loading queue…</div>}
 
+      <section className="filters-card">
+        <div className="filter-grid">
+          <label>
+            <span>Status</span>
+            <select value={filters.status} onChange={(event) => updateFilter('status', event.target.value)}>
+              <option value="">All</option>
+              {filterOptions.statuses.map((value) => (
+                <option key={value} value={value}>
+                  {value}
+                </option>
+              ))}
+            </select>
+          </label>
+          <label>
+            <span>Type</span>
+            <select value={filters.type} onChange={(event) => updateFilter('type', event.target.value)}>
+              <option value="">All</option>
+              {filterOptions.types.map((value) => (
+                <option key={value} value={value}>
+                  {value}
+                </option>
+              ))}
+            </select>
+          </label>
+          <label>
+            <span>Priority</span>
+            <select
+              value={filters.priority}
+              onChange={(event) => updateFilter('priority', event.target.value)}
+            >
+              <option value="">All</option>
+              {filterOptions.priorities.map((value) => (
+                <option key={value} value={String(value)}>
+                  {value}
+                </option>
+              ))}
+            </select>
+          </label>
+          <label>
+            <span>Agent</span>
+            <select value={filters.agent} onChange={(event) => updateFilter('agent', event.target.value)}>
+              <option value="">All</option>
+              {filterOptions.agents.map((value) => (
+                <option key={value} value={value}>
+                  {value}
+                </option>
+              ))}
+            </select>
+          </label>
+        </div>
+      </section>
+
+      <section className="content-grid">
         <section className="table-card">
           <table>
             <thead>
@@ -120,7 +234,11 @@ function App() {
             </thead>
             <tbody>
               {sortedItems.map((item) => (
-              <tr key={item.id}>
+                <tr
+                  key={item.id}
+                  onClick={() => setSelectedId(item.id)}
+                  className={selectedItem?.id === item.id ? 'selected-row' : ''}
+                >
                   <td className="mono">{shortId(item.id)}</td>
                   <td>{item.type}</td>
                   <td>
@@ -131,9 +249,61 @@ function App() {
                   <td>{formatDate(item.created_at)}</td>
                 </tr>
               ))}
+              {!sortedItems.length && (
+                <tr>
+                  <td colSpan={columns.length} className="empty-state">
+                    No work items match the current filters.
+                  </td>
+                </tr>
+              )}
             </tbody>
           </table>
         </section>
+
+        <aside className="detail-card">
+          <div className="detail-header">
+            <h2>Work Item Details</h2>
+            {selectedItem && (
+              <span className={`status-badge ${statusColors[selectedItem.status]}`}>{selectedItem.status}</span>
+            )}
+          </div>
+
+          {selectedItem ? (
+            <dl className="detail-list">
+              <DetailRow label="ID" value={selectedItem.id} mono />
+              <DetailRow label="Project ID" value={selectedItem.project_id} mono />
+              <DetailRow label="Type" value={selectedItem.type} />
+              <DetailRow label="Description" value={selectedItem.description} preserve />
+              <DetailRow
+                label="Payload"
+                value={selectedItem.payload ? JSON.stringify(selectedItem.payload, null, 2) : '—'}
+                mono
+                preserve
+              />
+              <DetailRow label="Priority" value={String(selectedItem.priority)} />
+              <DetailRow label="Assigned Agent" value={selectedItem.assigned_agent} />
+              <DetailRow label="Created By" value={selectedItem.created_by} />
+              <DetailRow label="Created At" value={formatDate(selectedItem.created_at)} />
+              <DetailRow label="Updated At" value={formatDate(selectedItem.updated_at)} />
+              <DetailRow label="Completed At" value={formatDate(selectedItem.completed_at)} />
+              <DetailRow label="Outcome" value={selectedItem.outcome} />
+              <DetailRow label="Notes" value={selectedItem.notes} preserve />
+              <DetailRow
+                label="Dispatch Log"
+                value={
+                  selectedItem.dispatch_log?.length
+                    ? JSON.stringify(selectedItem.dispatch_log, null, 2)
+                    : '[]'
+                }
+                mono
+                preserve
+              />
+            </dl>
+          ) : (
+            <div className="empty-detail">Select a work item to inspect its full details.</div>
+          )}
+        </aside>
+      </section>
     </main>
   )
 }