fix: replace LFS pointer with actual favicon SVG (#70)

The favicon.svg was a git-lfs pointer, not the actual file. Replaced
with a simple green $ on dark background matching the aimock brand.

Author: jpr5

docs/drift-detection.html

@@ -309,42 +309,82 @@ <h2>Test Files</h2>
           </thead>
           <tbody>
             <tr>
-              <td>openai-chat.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/openai-chat.drift.ts"
+                  >openai-chat.drift.ts</a
+                >
+              </td>
               <td>OpenAI</td>
               <td>Chat Completions (streaming + non-streaming, text + tool calls)</td>
             </tr>
             <tr>
-              <td>openai-responses.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/openai-responses.drift.ts"
+                  >openai-responses.drift.ts</a
+                >
+              </td>
               <td>OpenAI</td>
               <td>Responses API (HTTP SSE)</td>
             </tr>
             <tr>
-              <td>anthropic.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/anthropic.drift.ts"
+                  >anthropic.drift.ts</a
+                >
+              </td>
               <td>Anthropic</td>
               <td>Claude Messages API</td>
             </tr>
             <tr>
-              <td>gemini.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/gemini.drift.ts"
+                  >gemini.drift.ts</a
+                >
+              </td>
               <td>Google</td>
               <td>Gemini generateContent + streamGenerateContent</td>
             </tr>
             <tr>
-              <td>ws-realtime.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/ws-realtime.drift.ts"
+                  >ws-realtime.drift.ts</a
+                >
+              </td>
               <td>OpenAI</td>
               <td>Realtime API over WebSocket</td>
             </tr>
             <tr>
-              <td>ws-responses.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/ws-responses.drift.ts"
+                  >ws-responses.drift.ts</a
+                >
+              </td>
               <td>OpenAI</td>
               <td>Responses API over WebSocket</td>
             </tr>
             <tr>
-              <td>ws-gemini-live.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/ws-gemini-live.drift.ts"
+                  >ws-gemini-live.drift.ts</a
+                >
+              </td>
               <td>Google</td>
               <td>Gemini Live over WebSocket</td>
             </tr>
             <tr>
-              <td>models.drift.ts</td>
+              <td>
+                <a
+                  href="https://github.com/CopilotKit/aimock/blob/main/src/__tests__/models.drift.ts"
+                  >models.drift.ts</a
+                >
+              </td>
               <td>All</td>
               <td>Model list endpoint conformance</td>
             </tr>