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-appicon.svg

@@ -2,20 +2,20 @@
   <title>Ordinis — app icon</title>
   <defs>
     <linearGradient id="tile" x1="0" y1="0" x2="0" y2="1">
-      <stop offset="0" stop-color="#185FA5"/>
-      <stop offset="1" stop-color="#042C53"/>
+      <stop offset="0" stop-color="#2c2b27"/>
+      <stop offset="1" stop-color="#1a1714"/>
     </linearGradient>
   </defs>
   <rect width="1024" height="1024" rx="220" fill="url(#tile)"/>
   <g transform="translate(512 512)">
-    <circle r="300" fill="none" stroke="#85B7EB" stroke-width="4" opacity="0.5"/>
-    <circle r="195" fill="none" stroke="#85B7EB" stroke-width="4" opacity="0.5"/>
+    <circle r="300" fill="none" stroke="#f4d9cd" stroke-width="4" opacity="0.5"/>
+    <circle r="195" fill="none" stroke="#f4d9cd" stroke-width="4" opacity="0.5"/>
     <circle cx="300" cy="0" r="26" fill="#FFFFFF"/>
-    <circle cx="-150" cy="259.81" r="26" fill="#85B7EB"/>
-    <circle cx="-150" cy="-259.81" r="26" fill="#85B7EB"/>
+    <circle cx="-150" cy="259.81" r="26" fill="#d97757"/>
+    <circle cx="-150" cy="-259.81" r="26" fill="#d97757"/>
     <circle cx="-195" cy="0" r="21" fill="#FFFFFF"/>
-    <circle cx="97.5" cy="-168.87" r="21" fill="#85B7EB"/>
-    <circle cx="97.5" cy="168.87" r="21" fill="#85B7EB"/>
-    <circle r="48" fill="#FFFFFF"/>
+    <circle cx="97.5" cy="-168.87" r="21" fill="#d97757"/>
+    <circle cx="97.5" cy="168.87" r="21" fill="#d97757"/>
+    <circle r="48" fill="#d97757"/>
   </g>
 </svg>