Rename Nemotron to NVIDIA in model picker with logo (#1790)

## Motivation

The Nemotron model family in the model picker sidebar was displaying as
"Nemotron" with a generic checkmark icon. Since these models are
NVIDIA's Nemotron models, the category should be branded as "NVIDIA"
with the official NVIDIA logo, consistent with how other families are
branded (e.g., "llama" → "Meta", "gpt-oss" → "OpenAI").

## Changes

- **FamilySidebar.svelte**: Added `nemotron: "NVIDIA"` to the
`familyNames` mapping so the sidebar displays "NVIDIA" instead of
"Nemotron"
- **FamilyLogos.svelte**: Added the NVIDIA "eye" logo as an inline SVG
for the `nemotron` family, matching the `viewBox="0 0 24 24"` /
`fill="currentColor"` pattern used by all other brand logos
- **ModelPickerModal.svelte**: Added `"nemotron"` to the `familyOrder`
array so NVIDIA appears in a consistent position in the sidebar

## Why It Works

The model picker derives categories from the `family` field in TOML
model cards. Nemotron models already have `family = "nemotron"`, but the
three UI components (display name, logo, sort order) lacked explicit
entries for it, causing fallback behavior (auto-capitalized name,
checkmark icon, alphabetical sorting). Adding explicit entries for all
three aligns NVIDIA with the existing brand pattern.

## Test Plan

### Manual Testing
<!-- Hardware: N/A - dashboard UI change only -->
- Built dashboard successfully (`npm run build`)
- Verified the NVIDIA logo renders in the sidebar alongside existing
brand logos

### Automated Testing
- No test changes needed — this is a purely cosmetic dashboard change

---------

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

dashboard/src/lib/components/FamilyLogos.svelte

@@ -88,6 +88,12 @@
       d="M22.012 0h1.032v.927H24v.968h-.956V3.78h-1.032V1.896h-1.878v-.97h1.878V0zM2.6 12.371V1.87h.969v10.502h-.97zm10.423.66h10.95v.918h-6.208v9.579h-4.742V13.03zM5.629 3.333v12.356H0v4.51h10.386V8L20.859 8l-.003-4.668-15.227.001z"
     />
   </svg>
+{:else if family === "nemotron"}
+  <svg class="w-6 h-6 {className}" viewBox="0 0 24 24" fill="currentColor">
+    <path
+      d="M8.948 8.798v-1.43a6.7 6.7 0 0 1 .424-.018c3.922-.124 6.493 3.374 6.493 3.374s-2.774 3.851-5.75 3.851c-.398 0-.787-.062-1.158-.185v-4.346c1.528.185 1.837.857 2.747 2.385l2.04-1.714s-1.492-1.952-4-1.952a6.016 6.016 0 0 0-.796.035m0-4.735v2.138l.424-.027c5.45-.185 9.01 4.47 9.01 4.47s-4.08 4.964-8.33 4.964c-.37 0-.733-.035-1.095-.097v1.325c.3.035.61.062.91.062 3.957 0 6.82-2.023 9.593-4.408.459.371 2.34 1.263 2.73 1.652-2.633 2.208-8.772 3.984-12.253 3.984-.335 0-.653-.018-.971-.053v1.864H24V4.063zm0 10.326v1.131c-3.657-.654-4.673-4.46-4.673-4.46s1.758-1.944 4.673-2.262v1.237H8.94c-1.528-.186-2.73 1.245-2.73 1.245s.68 2.412 2.739 3.11M2.456 10.9s2.164-3.197 6.5-3.533V6.201C4.153 6.59 0 10.653 0 10.653s2.35 6.802 8.948 7.42v-1.237c-4.84-.6-6.492-5.936-6.492-5.936z"
+    />
+  </svg>
 {:else}
   <svg class="w-6 h-6 {className}" viewBox="0 0 24 24" fill="currentColor">
     <path

dashboard/src/lib/components/FamilySidebar.svelte

@@ -31,6 +31,7 @@
     kimi: "Kimi",
     flux: "FLUX",
     "qwen-image": "Qwen Img",
+    nemotron: "NVIDIA",
   };
 
   function getFamilyName(family: string): string {

dashboard/src/lib/components/ModelPickerModal.svelte

@@ -459,6 +459,7 @@
       "llama",
       "flux",
       "qwen-image",
+      "nemotron",
     ];
     return Array.from(families).sort((a, b) => {
       const aIdx = familyOrder.indexOf(a);