Make Windows Setup bilingual, offline-capable, and use NetX branding.

Ship WinSW + icon assets, default first-run without network, EN/ZH installer UI.

Co-authored-by: Cursor <cursoragent@cursor.com>

packaging/assets/README.md

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+# NetX packaging assets
+
+- `netx.ico` — installer / shortcuts / tray (regenerate with `python gen_icon.py`)
+- `netx-256.png` / `netx-64.png` — previews
+
+Mark matches `web/public/favicon.svg` (network “N” nodes on navy).

packaging/assets/gen_icon.py

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+"""Generate NetX Windows .ico from brand mark (matches web/public/favicon.svg)."""
+from __future__ import annotations
+
+import os
+from PIL import Image, ImageDraw
+
+OUT_DIR = os.path.dirname(os.path.abspath(__file__))
+BG = (15, 39, 68, 255)
+LINE = (126, 182, 232, 255)
+NODE = (232, 242, 252, 255)
+ACCENT = (61, 130, 247, 255)
+
+
+def make(size: int) -> Image.Image:
+    img = Image.new("RGBA", (size, size), (0, 0, 0, 0))
+    d = ImageDraw.Draw(img)
+    radius = max(2, int(size * 0.22))
+    d.rounded_rectangle([0, 0, size - 1, size - 1], radius=radius, fill=BG)
+    s = size / 32.0
+
+    def xy(x: float, y: float) -> tuple[float, float]:
+        return (x * s, y * s)
+
+    stroke = max(2, int(round(2.2 * s)))
+    for a, b in (
+        (xy(9.5, 8.5), xy(9.5, 23.5)),
+        (xy(9.5, 8.5), xy(22.5, 23.5)),
+        (xy(22.5, 8.5), xy(22.5, 23.5)),
+    ):
+        d.line([a, b], fill=LINE, width=stroke)
+
+    def circle(cx: float, cy: float, rad: float, fill: tuple[int, int, int, int]) -> None:
+        x, y = xy(cx, cy)
+        rr = rad * s
+        d.ellipse([x - rr, y - rr, x + rr, y + rr], fill=fill)
+
+    circle(9.5, 8.5, 2.35, NODE)
+    circle(9.5, 23.5, 2.35, NODE)
+    circle(22.5, 8.5, 2.35, NODE)
+    circle(22.5, 23.5, 2.35, NODE)
+    circle(16, 16, 1.7, ACCENT)
+    return img
+
+
+def main() -> None:
+    sizes = [16, 24, 32, 48, 64, 128, 256]
+    images = [make(s) for s in sizes]
+    ico_path = os.path.join(OUT_DIR, "netx.ico")
+    images[-1].save(ico_path, format="ICO", sizes=[(s, s) for s in sizes])
+    images[-1].save(os.path.join(OUT_DIR, "netx-256.png"))
+    make(64).save(os.path.join(OUT_DIR, "netx-64.png"))
+    print(f"wrote {ico_path} ({os.path.getsize(ico_path)} bytes)")
+
+
+if __name__ == "__main__":
+    main()