fix(brand): recolor logo — terracotta accent, no blue (theme-aligned)

Brand assets из !100 пришли с DeepBlue/SkyBlue colors (design system
prototype). Ordinis app theme uses warm terracotta accent (#d97757 light /
#b05a2e dark) на cream/ink palette. Never blue. Recolored все 5 SVG +
inline Sidebar mark:

- favicon.svg: stroke #d97757, dots/core #b05a2e
- ordinis-mark.svg: orbits #e6e1d4 (line), dots accent gradient terracotta
- ordinis-appicon.svg: dark warm-ink tile (#2c2b27 → #1a1714), accent dots,
  white outer dots for contrast on dark
- ordinis-lockup-light.svg: terracotta orbits + warm-ink wordmark (Tektur)
- ordinis-lockup-dark.svg: warm-dark bg + terracotta accents + cream wordmark
- Sidebar inline svg: currentColor + text-accent, var(--color-line) для
  orbits — автоматически работает в both light + dark themes
- index.html: theme-color/mask-icon → #b05a2e (terracotta dark)

User feedback: 'DeepBlue никакого синего адаптируй под наши темы'.

ordinis-admin-ui/public/ordinis-mark.svg

@@ -2,19 +2,19 @@
   <title>Ordinis MDM — mark</title>
   <defs>
     <linearGradient id="core" x1="0" y1="0" x2="1" y2="1">
-      <stop offset="0" stop-color="#378ADD"/>
-      <stop offset="1" stop-color="#185FA5"/>
+      <stop offset="0" stop-color="#d97757"/>
+      <stop offset="1" stop-color="#b05a2e"/>
     </linearGradient>
   </defs>
   <g transform="translate(128 128)">
-    <circle r="96" fill="none" stroke="#B5D4F4" stroke-width="1.2"/>
-    <circle r="62" fill="none" stroke="#B5D4F4" stroke-width="1.2"/>
-    <circle cx="96" cy="0" r="8" fill="#185FA5"/>
-    <circle cx="-48" cy="83.14" r="8" fill="#378ADD"/>
-    <circle cx="-48" cy="-83.14" r="8" fill="#378ADD"/>
-    <circle cx="-62" cy="0" r="6.4" fill="#185FA5"/>
-    <circle cx="31" cy="-53.69" r="6.4" fill="#378ADD"/>
-    <circle cx="31" cy="53.69" r="6.4" fill="#378ADD"/>
+    <circle r="96" fill="none" stroke="#e6e1d4" stroke-width="1.5"/>
+    <circle r="62" fill="none" stroke="#e6e1d4" stroke-width="1.5"/>
+    <circle cx="96" cy="0" r="8" fill="#b05a2e"/>
+    <circle cx="-48" cy="83.14" r="8" fill="#d97757"/>
+    <circle cx="-48" cy="-83.14" r="8" fill="#d97757"/>
+    <circle cx="-62" cy="0" r="6.4" fill="#b05a2e"/>
+    <circle cx="31" cy="-53.69" r="6.4" fill="#d97757"/>
+    <circle cx="31" cy="53.69" r="6.4" fill="#d97757"/>
     <circle r="15" fill="url(#core)"/>
   </g>
 </svg>