Fork ElemetryOS with macOS-style window decorations

- Move traffic-light buttons to the LEFT side of titlebars (close/minimize/maximize)
  in macOS order, using fixed left-pad positions instead of right-edge offsets
- Adopt macOS dark-mode color palette: #3C3C3C active titlebar, #2C2C2C inactive,
  traffic-light colors #FF5F57/#FEBC2E/#28C840, near-black #1C1C1C desktop
- Center window title text in the titlebar (macOS style), clamped to avoid
  overlapping the left button cluster
- Thin 1px window borders replacing the original 3px beveled border
- macOS blue (#4A90D9) selection highlight in the context menu
- Neutral dark context menu (#2C2C2C) with subtle separators and text indent
- Update README to document the ElemetryOS macOS fork identity and design changes

wm/include/wm.h

@@ -12,28 +12,29 @@
 #include <string.h>
 #include <unistd.h>
 
-/* ── palette (modern dark) ───────────────────────────────────────────── */
-#define COLOR_TITLE_ACTIVE     0x1E4D78   /* deep blue active title bar */
-#define COLOR_TITLE_INACTIVE   0x252830   /* dark grey inactive */
-#define COLOR_TITLE_TEXT_ACT   0xE8EEF8   /* near-white active text */
-#define COLOR_TITLE_TEXT_INACT 0x5C6070   /* dimmed inactive text */
-#define COLOR_BORDER_LIGHT     0x3A6898   /* blue-grey highlight */
-#define COLOR_BORDER_DARK      0x0C1018   /* near-black shadow */
-#define COLOR_CLOSE_BTN        0xCC3333   /* red close */
-#define COLOR_MAXIMIZE_BTN     0x2E8B44   /* green maximize */
-#define COLOR_MINIMIZE_BTN     0xBB8820   /* amber minimize */
-#define COLOR_CLOSE_BTN_HOV    0xFF5050
-#define COLOR_MAXIMIZE_BTN_HOV 0x44CC66
-#define COLOR_MINIMIZE_BTN_HOV 0xFFBB30
-#define COLOR_BG               0x1A2840   /* desktop background */
-#define COLOR_SNAP_OVERLAY     0x3A6898   /* snap highlight (unused, placeholder) */
+/* ── palette (macOS dark mode) ───────────────────────────────────────── */
+#define COLOR_TITLE_ACTIVE     0x3C3C3C   /* macOS dark titlebar */
+#define COLOR_TITLE_INACTIVE   0x2C2C2C   /* inactive, slightly darker */
+#define COLOR_TITLE_TEXT_ACT   0xFFFFFF   /* white active text */
+#define COLOR_TITLE_TEXT_INACT 0x686868   /* dimmed inactive text */
+#define COLOR_BORDER_LIGHT     0x505050   /* subtle border highlight */
+#define COLOR_BORDER_DARK      0x1C1C1C   /* near-black shadow */
+#define COLOR_CLOSE_BTN        0xFF5F57   /* macOS traffic-light red */
+#define COLOR_MAXIMIZE_BTN     0x28C840   /* macOS traffic-light green */
+#define COLOR_MINIMIZE_BTN     0xFEBC2E   /* macOS traffic-light yellow */
+#define COLOR_CLOSE_BTN_HOV    0xFF3B30
+#define COLOR_MAXIMIZE_BTN_HOV 0x34C759
+#define COLOR_MINIMIZE_BTN_HOV 0xFFCC00
+#define COLOR_BG               0x1C1C1C   /* near-black desktop */
+#define COLOR_SNAP_OVERLAY     0x4A90D9   /* macOS blue snap highlight */
 
 /* ── geometry ────────────────────────────────────────────────────────── */
-#define TITLE_HEIGHT   28          /* taller for modern look */
+#define TITLE_HEIGHT   28          /* macOS-style height */
 #define TITLE_TAB_W    200
-#define BORDER_W       3
-#define BTN_SIZE       14
-#define BTN_MARGIN     5
+#define BORDER_W       1           /* thin 1px macOS-style border */
+#define BTN_SIZE       12          /* macOS traffic-light diameter */
+#define BTN_MARGIN     8           /* spacing between traffic lights */
+#define BTN_LEFT_PAD   10          /* left edge → first button */
 #define RESIZE_GRIP    12
 #define MIN_WIN_W      120
 #define MIN_WIN_H      60
@@ -41,15 +42,15 @@
 #define DBL_CLICK_MS   400         /* double-click threshold */
 
 /*
- * Three buttons on right side (left to right): minimize, maximize, close
- *   close  = fw - BTN_SIZE - BTN_MARGIN - BORDER_W
- *   max    = close - BTN_SIZE - BTN_MARGIN - 2
- *   min    = max   - BTN_SIZE - BTN_MARGIN - 2
+ * macOS-style: three traffic-light buttons on LEFT side
+ *   close    = BTN_LEFT_PAD
+ *   minimize = BTN_LEFT_PAD + BTN_SIZE + BTN_MARGIN
+ *   maximize = BTN_LEFT_PAD + (BTN_SIZE + BTN_MARGIN) * 2
  */
-#define BTN_CLOSE_X(fw)  ((fw) - BTN_SIZE - BTN_MARGIN - BORDER_W)
-#define BTN_MAX_X(fw)    ((fw) - BTN_SIZE*2 - BTN_MARGIN*2 - BORDER_W - 2)
-#define BTN_MIN_X(fw)    ((fw) - BTN_SIZE*3 - BTN_MARGIN*3 - BORDER_W - 4)
-#define BTN_Y            (((TITLE_HEIGHT) - BTN_SIZE) / 2)
+#define BTN_CLOSE_X    (BTN_LEFT_PAD)
+#define BTN_MIN_X      (BTN_LEFT_PAD + BTN_SIZE + BTN_MARGIN)
+#define BTN_MAX_X      (BTN_LEFT_PAD + (BTN_SIZE + BTN_MARGIN) * 2)
+#define BTN_Y          (((TITLE_HEIGHT) - BTN_SIZE) / 2)
 
 /* ── fonts ───────────────────────────────────────────────────────────── */
 #define FONT_TITLE  "Sans:size=9:weight=bold"