Initial commit: Fenix 8 V3 data watch face

- Restore watchface-kit design (500x500, scaled per device)
- 7 themes auto-generated from tokens via gen_themes.py -> Themes.mc
- Four-segment gradient progress ring (22+21 ticks, 4 anchor dots)
- Center time, date band w/ Bluetooth icon, top battery + dual complications, bottom distance/steps
- 17 devices compiled clean (SDK 9.1.0)
- Includes browser/JS preview (preview.html) + 7-theme SVG sheet

.gitignore

@@ -0,0 +1,9 @@
+# Connect IQ build artifacts (regenerable via `monkeyc`)
+/bin/
+
+# Developer signing key — PRIVATE, never commit
+developer_key.der
+
+# OS / editor noise
+.DS_Store
+*.swp