finish refactor, add docs and CI

CMakeLists.txt

@@ -32,11 +32,7 @@ file(GLOB_RECURSE NXST_SOURCES
     src/ui/*.cpp
 )
 
-file(GLOB_RECURSE PLUTONIUM_SOURCES
-    lib/Plutonium/source/*.cpp
-)
-
-add_executable(NXST ${NXST_SOURCES} ${PLUTONIUM_SOURCES})
+add_executable(NXST ${NXST_SOURCES})
 
 # ── Include paths ─────────────────────────────────────────────────────────────
 target_include_directories(NXST PRIVATE
@@ -56,13 +52,25 @@ pkg_check_modules(PORTLIBS REQUIRED IMPORTED_TARGET ${NXST_PKG_MODULES})
 
 target_include_directories(NXST PRIVATE ${PORTLIBS_INCLUDE_DIRS})
 
+# ── Link libraries ────────────────────────────────────────────────────────────
+# ── Plutonium static library ──────────────────────────────────────────────────
+set(LIBPU_A ${CMAKE_SOURCE_DIR}/lib/Plutonium/lib/libpu.a)
+
+add_custom_command(
+    OUTPUT  ${LIBPU_A}
+    COMMAND make -C ${CMAKE_SOURCE_DIR}/lib/Plutonium -j
+    COMMENT "Building Plutonium (libpu.a)"
+)
+add_custom_target(plutonium DEPENDS ${LIBPU_A})
+add_dependencies(NXST plutonium)
+
 # ── Link libraries ────────────────────────────────────────────────────────────
 # Order matters for static linking: put most dependent libs first.
 # libpu.a first (contains C wrappers not in Plutonium source).
 # drm_nouveau, harfbuzz, freetype, z appended explicitly after pkg-config output
 # to fix the freetype→harfbuzz static link order (see build notes from libnx update).
 target_link_libraries(NXST PRIVATE
-    ${CMAKE_SOURCE_DIR}/lib/Plutonium/lib/libpu.a
+    ${LIBPU_A}
     PkgConfig::PORTLIBS
     drm_nouveau
     harfbuzz