feat(fitness): forearm measurement illustration + hips asset refresh

Adds a forearm SVG in the same currentColor-stroked style as thigh.svg and
wires it into both the body-parts wizard and BODY_PART_CARDS so the step
no longer falls back to the ruler placeholder. Also refreshes the hips PNG.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.45.0",
+	"version": "1.45.1",
 	"private": true,
 	"type": "module",
 	"scripts": {

src/lib/js/fitnessBodyParts.ts

@@ -22,7 +22,7 @@ export const BODY_PART_CARDS: BodyPartCard[] = [
 	{ key: 'shoulders', slugDe: 'schultern',    labelKey: 'shoulders', img: 'back.png',      paired: false, db: 'shoulders' },
 	{ key: 'chest',     slugDe: 'brust',        labelKey: 'chest',     img: 'shoulders.png', paired: false, db: 'chest' },
 	{ key: 'biceps',    slugDe: 'bizeps',       labelKey: 'biceps',    img: 'bicep.png',     paired: true,  dbLeft: 'leftBicep',   dbRight: 'rightBicep' },
-	{ key: 'forearms',  slugDe: 'unterarme',    labelKey: 'forearms',  img: null,            paired: true,  dbLeft: 'leftForearm', dbRight: 'rightForearm' },
+	{ key: 'forearms',  slugDe: 'unterarme',    labelKey: 'forearms',  img: 'forearm.svg',   paired: true,  dbLeft: 'leftForearm', dbRight: 'rightForearm' },
 	{ key: 'waist',     slugDe: 'taille',       labelKey: 'waist',     img: 'waist.png',     paired: false, db: 'waist' },
 	{ key: 'hips',      slugDe: 'huefte',       labelKey: 'hips',      img: 'hips.png',      paired: false, db: 'hips' },
 	{ key: 'thighs',    slugDe: 'oberschenkel', labelKey: 'thighs',    img: 'thigh.svg',     paired: true,  dbLeft: 'leftThigh',   dbRight: 'rightThigh' },

src/routes/fitness/[measure=fitnessMeasure]/body-parts/+page.svelte

@@ -23,7 +23,7 @@
 		{ key: 'shoulders', labelKey: 'shoulders', img: 'back.png',      paired: false, tipKey: 'measure_tip_shoulders', dbSingle: 'shoulders' },
 		{ key: 'chest',     labelKey: 'chest',     img: 'shoulders.png', paired: false, tipKey: 'measure_tip_chest',     dbSingle: 'chest' },
 		{ key: 'biceps',    labelKey: 'l_bicep',   img: 'bicep.png',     paired: true,  tipKey: 'measure_tip_biceps',    dbLeft: 'leftBicep',   dbRight: 'rightBicep' },
-		{ key: 'forearms',  labelKey: 'l_forearm', img: null,            paired: true,  tipKey: 'measure_tip_forearms',  dbLeft: 'leftForearm', dbRight: 'rightForearm' },
+		{ key: 'forearms',  labelKey: 'l_forearm', img: 'forearm.svg',   paired: true,  tipKey: 'measure_tip_forearms',  dbLeft: 'leftForearm', dbRight: 'rightForearm' },
 		{ key: 'waist',     labelKey: 'waist',     img: 'waist.png',     paired: false, tipKey: 'measure_tip_waist',     dbSingle: 'waist' },
 		{ key: 'hips',      labelKey: 'hips',      img: 'hips.png',      paired: false, tipKey: 'measure_tip_hips',      dbSingle: 'hips' },
 		{ key: 'thighs',    labelKey: 'l_thigh',   img: 'thigh.svg',     paired: true,  tipKey: 'measure_tip_thighs',    dbLeft: 'leftThigh',   dbRight: 'rightThigh' },

static/fitness/measure/forearm.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   width="105.47951mm"
+   height="88.317101mm"
+   viewBox="0 0 105.47951 88.317101"
+   version="1.1"
+   xmlns="http://www.w3.org/2000/svg">
+  <g fill="none" stroke="currentColor" stroke-width="3.96875" stroke-linecap="round" stroke-linejoin="round">
+    <path d="m 28.219992,6.4089162 c 0,0 7.111425,8.3334808 8.840436,21.0741648 1.674802,12.341265 -0.226164,20.103305 -0.226164,20.103305" />
+    <path d="m 33.146573,54.163149 c 0,0 11.087784,-18.944934 24.809245,-21.093332 13.721452,-2.148402 20.889333,-2.075644 20.889333,-2.075644 0,0 -8.131862,-14.346522 -7.05901,-17.009758 1.072879,-2.663226 6.364817,-11.6311912 8.172858,-11.9316226 3.798807,-0.6312508 19.453705,4.8549693 20.881951,8.8943516 0.70148,1.98398 4.00376,20.711227 2.0123,24.33406 -1.99146,3.622846 -6.250262,9.655164 -24.826553,23.416147 C 68.635984,65.653825 29.249447,87.084983 25.437319,86.293857 20.143778,85.195299 4.6632379,63.878161 1.984375,59.435352" />
+  </g>
+</svg>