Add albums support, API layer, and Docker improvements

- Add albums browsing and navigation (src/albums.c, src/app.c)
- Extract API calls into dedicated src/api.c module
- Improve display and UI components
- Update CMakeLists.txt to include new source files
- Refactor Dockerfile for better build process

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CMakeLists.txt

@@ -32,6 +32,10 @@ target_link_libraries(${PROJECT_NAME}
   jpeg
   z
   m
+  # OpenSSL 1.0.2's libcrypto.a has a threads_pthread.o that references
+  # pthread_getspecific/pthread_self/pthread_equal; the Vita newlib stubs that
+  # live in libpthread.a.
+  pthread
   SceDisplay_stub
   SceGxm_stub
   SceSysmodule_stub