fix: edge control critical bugs - .env dedup, authorized_keys, Caddy routes

- Fix .env write in edge register to use single grep -Ev + mv pattern (not three-pass append)
- Fix register.sh to source authorized_keys.sh and call rebuild_authorized_keys directly
- Fix caddy.sh remove_route to use jq to find route index by host match
- Fix authorized_keys.sh operator precedence: { [ -z ] || [ -z ]; } && continue
- Fix install.sh Caddyfile to use { admin localhost:2019 } global options
- Fix deregister and status SSH to use StrictHostKeyChecking=accept-new

tools/edge-control/lib/authorized_keys.sh

@@ -49,7 +49,7 @@ generate_authorized_keys_content() {
     pubkey=$(echo "$line" | jq -r '.pubkey')
 
     # Skip if missing required fields
-    [ -z "$port" ] || [ -z "$pubkey" ] && continue
+    { [ -z "$port" ] || [ -z "$pubkey" ]; } && continue
 
     # Build the authorized_keys line
     # Format: restrict,port-forwarding,permitlisten="127.0.0.1:<port>",command="/bin/false" <key-type> <key>