feat: opus 4.6 woooo (#111)

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### Dependencies

- [ ] I have pinned the dependencies to a specific patch version.

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### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
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Reviewed-on: #111
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src/lib/components/ConfigSidebar.svelte

@@ -81,16 +81,20 @@
 
   const availableModels = [
     { value: "", label: "Default (from ~/.claude)" },
-    // Current generation (Claude 4.5)
+    // Current generation (Claude 4.6)
+    { value: "claude-opus-4-6", label: "Claude Opus 4.6 (Most Capable)" },
+    // Previous generation (Claude 4.5)
     { value: "claude-sonnet-4-5-20250929", label: "Claude Sonnet 4.5 (Recommended)" },
     { value: "claude-haiku-4-5-20251001", label: "Claude Haiku 4.5 (Fast & Cheap)" },
-    { value: "claude-opus-4-5-20251101", label: "Claude Opus 4.5 (Most Capable)" },
-    // Previous generation (Claude 4)
+    { value: "claude-opus-4-5-20251101", label: "Claude Opus 4.5" },
+    // Previous generation (Claude 4.x)
     { value: "claude-opus-4-1-20250805", label: "Claude Opus 4.1" },
     { value: "claude-sonnet-4-20250514", label: "Claude Sonnet 4" },
     { value: "claude-opus-4-20250514", label: "Claude Opus 4" },
     // Legacy (Claude 3.x)
     { value: "claude-3-7-sonnet-20250219", label: "Claude 3.7 Sonnet" },
+    { value: "claude-3-5-sonnet-20241022", label: "Claude 3.5 Sonnet (Oct 2024)" },
+    { value: "claude-3-5-sonnet-20240620", label: "Claude 3.5 Sonnet (Jun 2024)" },
     { value: "claude-3-haiku-20240307", label: "Claude 3 Haiku (Cheapest)" },
   ];
 

src/lib/stores/stats.ts

@@ -10,7 +10,9 @@ export type BudgetType = "token" | "cost";
 // Model pricing (per million tokens) - keep in sync with stats.rs
 // Source: https://platform.claude.com/docs/en/about-claude/models/overview
 export const MODEL_PRICING: Record<string, { input: number; output: number }> = {
-  // Current generation (Claude 4.5)
+  // Current generation (Claude 4.6)
+  "claude-opus-4-6": { input: 5.0, output: 25.0 },
+  // Previous generation (Claude 4.5)
   "claude-opus-4-5-20251101": { input: 5.0, output: 25.0 },
   "claude-sonnet-4-5-20250929": { input: 3.0, output: 15.0 },
   "claude-haiku-4-5-20251001": { input: 1.0, output: 5.0 },