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/favicon.svg

@@ -1,10 +1,10 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32">
   <title>Ordinis favicon</title>
   <g transform="translate(16 16)">
-    <circle r="12" fill="none" stroke="#378ADD" stroke-width="1.4"/>
-    <circle cx="12" cy="0" r="2.3" fill="#0C447C"/>
-    <circle cx="-6" cy="10.39" r="2.3" fill="#0C447C"/>
-    <circle cx="-6" cy="-10.39" r="2.3" fill="#0C447C"/>
-    <circle r="2.8" fill="#185FA5"/>
+    <circle r="12" fill="none" stroke="#d97757" stroke-width="1.4"/>
+    <circle cx="12" cy="0" r="2.3" fill="#b05a2e"/>
+    <circle cx="-6" cy="10.39" r="2.3" fill="#b05a2e"/>
+    <circle cx="-6" cy="-10.39" r="2.3" fill="#b05a2e"/>
+    <circle r="2.8" fill="#b05a2e"/>
   </g>
 </svg>