keep discoverds fileds in separate sqlite

src/fgai/dashboard.py

@@ -337,6 +337,8 @@ async function refresh() {
     `Baseline sources ready: ${esc((data.baseline || {}).sources_ready || 0)}`,
     `Baseline training days: ${esc((data.baseline || {}).training_days || 0)}`,
     `Baseline DB size: ${esc(bytes((data.baseline || {}).size_bytes || 0))}`,
+    `Discovery fields recorded: ${esc((data.baseline || {}).discovery_fields_recorded || 0)}`,
+    `Discovery cache events: ${esc((data.baseline || {}).discovery_cache_events || 0)}`,
     `MCP status: ${esc(mcp.status || 'unknown')}`,
     mcp.error ? `<span class="sev-high">MCP error: ${esc(mcp.error)}</span>` : '',
     `Enabled streams: ${esc(enabledStreams.length)}`,