fix(dashboard): 3 UI bugs + new DB watch tool

1. filterCategory: fix inline event.target → uses btn parameter
   - All Agents tab filter buttons now correctly toggle active class

2. exportRecommendations/showApplyModal: read from agentData, not removed INLINE_RECOMMENDATIONS
   - Apply modal shows real recommendations
   - Export generates JSON with real data

3. Heatmap cell click: add showCellDetail modal with Chart.js line chart + prompt history
   - onclick='showCellDetail(model, agent)' on every td
   - renderCellChart computes score history from agent.history
   - prompt_change items filtered and displayed

4. watch-db.cjs: incremental DB sync tool
   - Polls git for changes in .kilo/agents/*.md and kilo-meta.json
   - Detects model_change vs prompt_change by comparing with previous version
   - Exports to JSON after sync, logs to .kilo/logs/watch-db.log
   - SIGINT/SIGTERM graceful shutdown
   - Trigger: npm run evolution:watch

agent-evolution/scripts/build-standalone-fixed.cjs

@@ -194,7 +194,7 @@ function renderHeatmap() {
             h += '<td style="background:' + hmColor(s) + ';color:' + hmText(s) + '" class="' + (cur ? 'hm-cur' : '') + '" title="' + ag.n + ' × ' + hmModels[j].n + ': ' + s + '"' +
                 ' onmouseover="showTT(event,\\\'' + ag.n + '\\\',\\\'' + hmModels[j].n + ' (' + hmModels[j].p + ')\\\',' + s + ',' + best + ',' + cur + ',' + hmModels[j].if + ')"' +
                 ' onmouseout="hideTT()"' +
-                ' onclick="openHmModal(event,\\\'' + ag.n + '\\\',\\\'' + hmModels[j].n + '\\\',' + s + ',' + hmModels[j].if + ')">' + s + marks + '</td>';
+                ' onclick="showCellDetail(\'' + hmModels[j].full + '\', \'' + ag.n + '\')">' + s + marks + '</td>';
         });
         h += '</tr>';
     });