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

manifest.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iq:manifest xmlns:iq="http://www.garmin.com/xml/connectiq" version="3">
+    <iq:application
+        entry="Fenix8V3App"
+        id="f8a3c1b2c3d44e5f8a9b0c1d2e3f4a5b"
+        launcherIcon="@Drawables.LauncherIcon"
+        minSdkVersion="4.2.0"
+        name="@Strings.AppName"
+        type="watchface"
+        version="1.0.0">
+
+        <iq:products>
+            <iq:product id="enduro3"/>
+            <iq:product id="fenix843mm"/>
+            <iq:product id="fenix847mm"/>
+            <iq:product id="fenix8pro47mm"/>
+            <iq:product id="fenix8solar47mm"/>
+            <iq:product id="fenix8solar51mm"/>
+            <iq:product id="epix2"/>
+            <iq:product id="epix2pro47mm"/>
+            <iq:product id="epix2pro51mm"/>
+            <iq:product id="fenix7"/>
+            <iq:product id="fenix7x"/>
+            <iq:product id="fenix7s"/>
+            <iq:product id="fr965"/>
+            <iq:product id="fr265"/>
+            <iq:product id="fr255"/>
+            <iq:product id="venu3"/>
+            <iq:product id="vivoactive5"/>
+        </iq:products>
+
+        <iq:languages>
+            <iq:language>chn</iq:language>
+            <iq:language>eng</iq:language>
+        </iq:languages>
+
+    </iq:application>
+</iq:manifest>