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

package.json

@@ -29,6 +29,7 @@
     "evolution:reload": "bash agent-evolution/docker-run.sh reload",
     "evolution:restart": "bash agent-evolution/docker-run.sh restart",
     "evolution:stop": "bash agent-evolution/docker-run.sh stop",
+    "evolution:watch": "node agent-evolution/scripts/watch-db.cjs",
     "agent:stats": "bun run scripts/agent-stats.ts",
     "agent:stats:week": "bun run scripts/agent-stats.ts --last 7",
     "agent:stats:project": "bun run scripts/agent-stats.ts --project",