fix(caddy): override php_fastcgi try_files to prefer index.html

scripts/install_services.sh

@@ -72,9 +72,10 @@ create_necessary_dirs() {
   # AvianVisitors overlay. The avian/ symlink keeps assets + PHP shims
   # reachable at /avian/. The five frontend files at the EXTRACTED root
   # make the collage the default index for http://birdnet.local/ -
-  # Caddy serves index.html before index.php, so BirdNET-Pi's stock UI
+  # the matching try_files override in update_caddyfile.sh teaches
-  # moves to http://birdnet.local/index.php (still linked from the
+  # php_fastcgi to prefer index.html over index.php at the root, so
-  # AvianVisitors menu drawer).
+  # BirdNET-Pi's stock UI moves to http://birdnet.local/index.php
+  # (still linked from the AvianVisitors menu drawer).
   if [ -d $my_dir/avian ]; then
     sudo -u ${USER} ln -fs $my_dir/avian ${EXTRACTED}/avian
     sudo -u ${USER} ln -fs $my_dir/avian/frontend/index.html ${EXTRACTED}/index.html

scripts/update_caddyfile.sh

@@ -37,7 +37,13 @@ http:// ${BIRDNETPI_URL} {
     birdnet ${HASHWORD}
   }
   reverse_proxy /stream localhost:8000
-  php_fastcgi unix//run/php/php-fpm.sock
+  # AvianVisitors overlay drops an index.html alongside BirdNET-Pi's
+  # index.php. The default try_files for php_fastcgi prefers index.php
+  # over index.html, so override it - this is a no-op on stock installs
+  # since EXTRACTED has no index.html there.
+  php_fastcgi unix//run/php/php-fpm.sock {
+    try_files {path} {path}/index.html {path}/index.php index.php
+  }
   reverse_proxy /log* localhost:8080
   reverse_proxy /stats* localhost:8501
   reverse_proxy /terminal* localhost:8888
@@ -55,7 +61,13 @@ http:// ${BIRDNETPI_URL} {
     file_server browse
   }
   reverse_proxy /stream localhost:8000
-  php_fastcgi unix//run/php/php-fpm.sock
+  # AvianVisitors overlay drops an index.html alongside BirdNET-Pi's
+  # index.php. The default try_files for php_fastcgi prefers index.php
+  # over index.html, so override it - this is a no-op on stock installs
+  # since EXTRACTED has no index.html there.
+  php_fastcgi unix//run/php/php-fpm.sock {
+    try_files {path} {path}/index.html {path}/index.php index.php
+  }
   reverse_proxy /log* localhost:8080
   reverse_proxy /stats* localhost:8501
   reverse_proxy /terminal* localhost:8888