Replace MySQL with SQLite, fix Jinja2 template syntax, and add README

README.md

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+# infmap - Infrastructure Map
+
+A Dropshell template that provides a web dashboard showing the status of your servers. It SSHes into configured servers periodically to collect system information and displays it in an attractive dark-themed web UI.
+
+## What It Collects
+
+- **System**: hostname, OS, kernel, architecture, uptime
+- **Hardware**: motherboard make/model/version, BIOS version/date
+- **CPU**: model, cores, sockets, threads, live usage %
+- **Memory**: total, used, available, live usage %
+- **Storage**: physical disks, mounted filesystems with usage %
+- **GPUs**: all detected graphics/3D/display adapters
+- **Network**: all interfaces with IPv4/IPv6, MAC, state, speed, driver
+- **Routing**: default gateway and interface
+- **DNS**: configured nameservers
+- **Tailscale**: IP and hostname (if installed)
+
+All information is gathered without root access using `/sys/class/dmi/id/`, `lscpu`, `/proc/meminfo`, `lspci`, `ip addr`, etc.
+
+## Architecture
+
+Single Docker container running a Python Flask app:
+- **Collector thread**: SSHes into servers on a schedule, runs a gather script, stores results in SQLite
+- **Web server**: Serves the dashboard on a configurable HTTP port
+
+Data is persisted in a Docker volume (`${CONTAINER_NAME}_data`).
+
+## Setup
+
+### 1. Create the service
+
+```bash
+dropshell create-service <server> infmap <service-name>
+```
+
+### 2. Configure
+
+Edit `service.env`:
+
+| Variable | Default | Description |
+|---|---|---|
+| `CONTAINER_NAME` | `infmap` | Docker container/project name |
+| `SSH_USER` | `root` | Dropshell SSH user for this service |
+| `WEB_PORT` | `8080` | HTTP port for the web dashboard |
+| `SSH_KEY_PATH` | `/root/.ssh/id_ed25519` | Host path to SSH private key for connecting to monitored servers |
+| `COLLECTION_INTERVAL` | `300` | Seconds between collection runs |
+| `MAX_CONCURRENT_SSH` | `5` | Max simultaneous SSH connections |
+
+Edit `infrastructure.conf` to define your servers:
+
+```
+Production
+  root@prod-web-01
+  root@prod-db-01
+  deploy@prod-app-01
+
+Development
+  deploy@dev-01
+  deploy@dev-02
+```
+
+- Group names are freeform labels (no indentation)
+- Servers are indented with `USERNAME@HOSTNAME`
+- Lines starting with `#` are comments
+
+### 3. Install
+
+```bash
+dropshell install <server> <service-name>
+```
+
+The dashboard will be available at `http://<server>:<WEB_PORT>`.
+
+## Web Dashboard
+
+- Servers displayed in cards grouped by group name, sorted by primary IP
+- Each card shows hostname, IP, OS, and color-coded usage bars for CPU, RAM, and disk
+  - Green: < 60%
+  - Yellow: 60-75%
+  - Orange: 75-90%
+  - Red: > 90%
+- Click a card to expand full hardware and network details
+- Page auto-refreshes every 60 seconds
+
+## API
+
+- `GET /` - Web dashboard
+- `GET /api/servers` - JSON array of all servers with full details