updated DB query and build instructions

CLAUDE.md

@@ -107,6 +107,7 @@ ssh kisfenyo@192.168.0.162 "docker ps --filter name=felhom-controller --format '
 ```
 
 Then build with the next version (e.g., if current is 0.2.10, use 0.2.11):
+IMPORTANT!: Build directory is: ~/build/felhom-controller
 ```bash
 ssh kisfenyo@192.168.0.180 "cd ~/build/felhom-controller && git -C ~/git/deploy-felhom-compose pull && ./build.sh <NEW_VERSION> --push"
 ```
@@ -139,7 +140,7 @@ ssh kisfenyo@192.168.0.162 "docker logs felhom-controller --tail 20"
 | Step | Command | Where |
 |------|---------|-------|
 | 1. Commit + push | `git add -A && git commit -m "..." && git push` | Local (this repo) |
-| 2. Build + push image | `ssh 192.168.0.180 "... ./build.sh <VER> --push"` | Build server |
+| 2. Build + push image | `ssh 192.168.0.180 "cd ~/build/felhom-controller... ./build.sh <VER> --push"` | Build server |
 | 3. Deploy | `ssh 192.168.0.162 "... docker compose up -d"` | Demo node |
 | 4. Verify | `ssh 192.168.0.162 "docker ps ..."` | Demo node |
 

controller/.gitignore

@@ -4,6 +4,8 @@ bin/
 *.dll
 *.so
 *.dylib
+controller
+controller.exe
 
 # Test artifacts
 coverage.out

controller/internal/metrics/store.go

@@ -149,8 +149,8 @@ func (s *MetricsStore) QuerySystemMetrics(from, to time.Time, resolution int) ([
 		SELECT
 			(ts / ?) * ? AS bucket_ts,
 			AVG(cpu_percent),
-			AVG(mem_used_mb),
-			AVG(mem_total_mb),
+			ROUND(AVG(mem_used_mb)),
+			ROUND(AVG(mem_total_mb)),
 			AVG(temp_celsius),
 			AVG(load_avg_1),
 			AVG(load_avg_5),