v0.9.5 beta — full feature build ready for distribution

Core additions since initial commit:
- Platform-split MIDI (midi_linux.c / midi_windows.c)
- Patch system: save/load/scan, subdirectory navigation, favourites
- Config system: last MIDI device and CC mappings persisted to disk
- Custom embedded pixel font and sprite sheet (no loose asset files at runtime)
- Window icon embedded at runtime (SetWindowIcon) and in Windows .exe (windres)
- chdirToExeDir() in platform.c so double-click launch finds patches/ correctly
- About screen accessible from Master panel

UI polish:
- TITLE_BAR_H constant (20 px) — sprite buttons now fit inside title bars
- All title bar text, button overlay text, and close/active labels vertically centred
- Full-screen dim overlay computed from camera transform (no more partial coverage)
- Patch browser: folder navigation, breadcrumb title, 256-slot limit lifted

Build:
- Makefile auto-discovers sources; embeds sprites/font/icon via xxd rules
- Windows cross-compile: make PLATFORM=windows (mingw-w64 + windres)
- windows.h isolated in platform.c to avoid Rectangle/CloseWindow conflicts with raylib.h
- WIN_RES uses lazy = assignment so OBJ_DIR expands correctly for windres output path

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

source/platform.c

@@ -0,0 +1,29 @@
+#define _POSIX_C_SOURCE 200809L
+/* Isolated from raylib.h to avoid Rectangle/CloseWindow/ShowCursor conflicts
+   with windows.h on Windows cross-compile targets. */
+#ifdef _WIN32
+#  include <windows.h>
+#  include <direct.h>
+#else
+#  include <unistd.h>
+#  include <libgen.h>
+#endif
+#include <string.h>
+#include "platform.h"
+
+void chdirToExeDir(void)
+{
+    char path[1024];
+#ifdef _WIN32
+    DWORD len = GetModuleFileNameA(NULL, path, (DWORD)sizeof(path));
+    if (!len) return;
+    char *last = strrchr(path, '\\');
+    if (!last) last = strrchr(path, '/');
+    if (last) { *last = '\0'; _chdir(path); }
+#else
+    ssize_t len = readlink("/proc/self/exe", path, sizeof(path) - 1);
+    if (len <= 0) return;
+    path[len] = '\0';
+    if (chdir(dirname(path)) != 0) { }
+#endif
+}