Remove API key requirement

CMakeLists.txt

@@ -18,20 +18,6 @@ else()
       "Version string shown in the Home footer (override at configure time)")
 endif()
 
-# API bearer key baked into the binary and sent as `Authorization: Bearer <key>`
-# on every portal request. Leave empty to send no auth header. Never commit the
-# real value — inject it at CI build time from a secret, e.g.:
-#   cmake ... -DAPI_KEY="${{ secrets.PORTAL_API_KEY }}"
-# The `nix develop` shell exports API_KEY from the ambient environment, which
-# seeds a fresh configure; -D wins on reconfigure.
-if(DEFINED ENV{API_KEY})
-  set(API_KEY "$ENV{API_KEY}" CACHE STRING
-      "Portal API key baked into the binary (leave empty to skip auth)")
-else()
-  set(API_KEY "" CACHE STRING
-      "Portal API key baked into the binary (leave empty to skip auth)")
-endif()
-
 find_package(SDL3 REQUIRED)
 find_package(SDL3_ttf REQUIRED)
 find_package(SDL3_image REQUIRED)
@@ -90,7 +76,6 @@ add_executable(radiantwave
 
 target_compile_definitions(radiantwave PRIVATE
     APP_VERSION="${APP_VERSION}"
-    API_KEY="${API_KEY}"
 )
 
 target_include_directories(radiantwave PRIVATE src)