Add smart Caddy auto-configuration

SKILL.md

@@ -29,6 +29,7 @@ Installs [ttyd](https://github.com/tsl0922/ttyd) - a simple command-line tool fo
 | `TTYD_COMMAND` | Command to run | `/bin/bash` |
 | `TTYD_CREDENTIAL` | Basic auth (user:pass) | (none) |
 | `TTYD_OPTIONS` | Additional ttyd options | (none) |
+| `TTYD_DOMAIN` | Domain for Caddy auto-config | (none) |
 
 ## Usage
 
@@ -54,7 +55,20 @@ TTYD_CREDENTIAL="admin:secret" ./scripts/run.sh
 TTYD_COMMAND="htop" ./scripts/run.sh
 ```
 
-### With Caddy (HTTPS)
+### Auto-configuration with Caddy
+
+If the `caddy` skill is present, ttyd will automatically register itself:
+
+```bash
+# Set domain for auto-config
+TTYD_DOMAIN="terminal.example.com"
+```
+
+This creates a snippet in `caddy/snippets.d/ttyd.caddy` that Caddy imports on startup.
+
+### Manual Caddy Config
+
+If not using auto-config:
 
 ```caddyfile
 terminal.example.com {

scripts/autorun.sh

@@ -2,6 +2,9 @@
 set -e
 
 TTYD_VERSION="${TTYD_VERSION:-1.7.7}"
+SKILLS_DIR="${SKILLS_DIR:-/skills}"
+TTYD_PORT="${TTYD_PORT:-7681}"
+TTYD_DOMAIN="${TTYD_DOMAIN:-}"
 
 # Idempotent ttyd installation
 install_ttyd() {
@@ -32,4 +35,46 @@ install_ttyd() {
     echo "ttyd installed: $(ttyd --version)"
 }
 
+# Configure Caddy if present
+configure_caddy() {
+    local caddy_dir="$SKILLS_DIR/caddy"
+
+    if [ ! -d "$caddy_dir" ]; then
+        echo "Caddy not found - ttyd will run standalone on port $TTYD_PORT"
+        return 0
+    fi
+
+    echo "Caddy detected - configuring reverse proxy..."
+
+    # Create snippets directory for modular config
+    local snippets_dir="$caddy_dir/snippets.d"
+    mkdir -p "$snippets_dir"
+
+    # Generate ttyd snippet
+    local snippet="$snippets_dir/ttyd.caddy"
+
+    if [ -n "$TTYD_DOMAIN" ]; then
+        # Domain-based routing
+        cat > "$snippet" << EOF
+# Auto-generated by ttyd skill
+$TTYD_DOMAIN {
+    reverse_proxy localhost:$TTYD_PORT
+}
+EOF
+        echo "Caddy config: $TTYD_DOMAIN -> localhost:$TTYD_PORT"
+    else
+        # Path-based routing (fallback)
+        cat > "$snippet" << EOF
+# Auto-generated by ttyd skill
+# Add to your site block:
+# handle /terminal/* {
+#     uri strip_prefix /terminal
+#     reverse_proxy localhost:$TTYD_PORT
+# }
+EOF
+        echo "Caddy snippet created: $snippet (manual path-based config)"
+    fi
+}
+
 install_ttyd
+configure_caddy