Added memory limits and system info for memory

CONTEXT.md

@@ -7,7 +7,7 @@
 >
 > Ask Claude Code: "Please update CONTEXT.md with what we did today"
 
-Last updated: 2026-02-14
+Last updated: 2026-02-14 (evening)
 
 ---
 
@@ -28,7 +28,20 @@ Last updated: 2026-02-14
 - **Running on:** demo-felhom (N100 mini PC) at 192.168.0.162:8080
 - **All Phase 1 features working:** deploy, start/stop/restart/update, logs, health-aware states, auth
 
-### What was just completed (2026-02-13/14)
+### What was just completed (2026-02-14)
+- **System info bar on Vezérlőpult dashboard**: RAM, SSD, and optional HDD usage
+  - Progress bars with color coding (green < 70%, yellow 70-85%, red > 85%)
+  - New `internal/system` package reads `/proc/meminfo` + `syscall.Statfs`
+  - Platform-specific: Linux impl + non-Linux stub (build tags)
+  - Hungarian labels: "Memória", "SSD tárhely", "Külső HDD"
+- **Docker Compose memory limits** on paperless-ngx template:
+  - paperless-webserver: 768M, postgres: 256M, redis: 128M
+  - Added `mem_limit` field to `.felhom.yml` ResourceHints (total: 1152M)
+- **`/api/system/info` endpoint** now returns live system metrics (was customer info)
+- **Config**: Added `paths.hdd_path` for external HDD monitoring
+- Controller image builds via build.sh, pushes to Gitea container registry
+
+### Previously completed (2026-02-13)
 - Built the entire felhom-controller from scratch (Go, no frameworks)
 - Debugged and fixed 7 issues during first real deployment:
   1. Password validation (empty passwords accepted)
@@ -38,14 +51,14 @@ Last updated: 2026-02-14
   5. "Részletek" button redirect for deployed apps
   6. Paperless OCR language installation (LANGUAGES vs LANGUAGE env var)
   7. Documentation: restart vs up -d for image updates
-- Controller image builds via build.sh, pushes to Gitea container registry
 
 ### What's next (priorities)
 1. Deploy a second app (e.g., Immich, Jellyfin) to validate the template system
 2. Test on Raspberry Pi (pi-customer-1)
-3. Phase 2: Monitoring & Healthchecks integration
-4. Phase 3: Backup system (DB dumps + restic)
-5. Dashboard dark theme (align with felhom.eu website)
+3. Add `paths.hdd_path` to demo-felhom controller.yaml to enable HDD bar
+4. Phase 2 continued: CPU/temperature metrics, Healthchecks.io pings
+5. Phase 3: Backup system (DB dumps + restic)
+6. Add memory limits to other app catalog templates (Immich, Jellyfin, etc.)
 
 ## Architecture decisions
 
@@ -59,6 +72,8 @@ Last updated: 2026-02-14
 | app.yaml per stack | Separates deploy config from compose files, survives git pulls |
 | Password fields require explicit input | Prevents accidental empty-password deployments |
 | Health-aware state from Docker Status field | Docker's State says "running" even for unhealthy containers |
+| Memory limits via deploy.resources.limits | Prevents runaway containers; ~50% headroom over expected usage |
+| System info from /proc/meminfo + statfs | No external dependencies, cheap to read on each page load |
 
 ## Key file locations on demo-felhom
 
@@ -89,7 +104,7 @@ Last updated: 2026-02-14
 | Repository | Status | Notes |
 |------------|--------|-------|
 | deploy-felhom-compose | Active | This repo. Controller code + deploy scripts |
-| app-catalog-felhom.eu | Active | 49 app templates, needs PAPERLESS_OCR_LANGUAGES fix |
+| app-catalog-felhom.eu | Active | 49 app templates, paperless-ngx has memory limits |
 | felhom.eu | Stable | Website live, SEO indexed, email working |
 | homelab-manifests | Stable | k3s cluster running (dooplex.hu services) |
 | misc-scripts | Utility | collect-repo.sh, backup helpers |