watch plugin: analog clock overlay with SVG watchface

Simple watchface with second-hand wobble animation, 5-min idle
auto-show, W key toggle, light/dark theme colors, backdrop blur
from theme settings. Grace period prevents instant dismiss.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

public/plugins/watch/faces/simple/minute.svg

@@ -0,0 +1,20 @@
+<svg
+   width="176.00125mm"
+   height="176.00124mm"
+   viewBox="0 0 176.00125 176.00124"
+   version="1.1"
+   id="svg1"
+   xml:space="preserve"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"><defs
+     id="defs1" /><g
+     id="layer1"
+     transform="translate(-16.173035,-17.825715)"><path
+       id="rect231"
+       style="display:inline;fill:var(--watch-svg-minute-fill, var(--watch-hand-color, #fff));stroke-width:0.809242;stroke-linejoin:round;paint-order:fill markers stroke"
+       d="m 104.17365,40.792641 c 4.52102,0 8.16069,3.639666 8.16069,8.160687 v 56.925732 c 0,4.52102 -3.63967,8.16069 -8.16069,8.16069 -4.521021,0 -8.160688,-3.63967 -8.160688,-8.16069 V 48.953328 c 0,-4.521021 3.639667,-8.160687 8.160688,-8.160687 z" /><circle
+       style="display:none;fill:none;fill-opacity:0.38222;stroke-width:0.0278984;stroke-linejoin:round;paint-order:fill markers stroke"
+       id="circle256"
+       cx="104.17366"
+       cy="105.82634"
+       r="88.000626" /></g></svg>