feat: add Nemo file manager emblems for git repo status

emblems/emblem-repo-claude.svg

@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48">
+  <circle cx="24" cy="24" r="21" fill="#c96442" stroke="#7a3623" stroke-width="1.5"/>
+  <g fill="#fbead9">
+    <path d="M24 10 L27 20 L38 24 L27 28 L24 38 L21 28 L10 24 L21 20 Z"/>
+  </g>
+</svg>

emblems/emblem-repo-dirty.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48">
+  <circle cx="24" cy="24" r="21" fill="#d9822b" stroke="#8a4f0f" stroke-width="1.5"/>
+  <text x="24" y="33" font-family="sans-serif" font-size="28" font-weight="bold" fill="#fff8ef" text-anchor="middle">!</text>
+</svg>

emblems/emblem-repo-git.svg

@@ -0,0 +1,10 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48">
+  <circle cx="24" cy="24" r="21" fill="#3f5a7d" stroke="#1e2f42" stroke-width="1.5"/>
+  <g fill="none" stroke="#e8edf3" stroke-width="3" stroke-linecap="round">
+    <circle cx="17" cy="15" r="3.2" fill="#e8edf3" stroke="none"/>
+    <circle cx="17" cy="33" r="3.2" fill="#e8edf3" stroke="none"/>
+    <circle cx="31" cy="24" r="3.2" fill="#e8edf3" stroke="none"/>
+    <path d="M17 18 L17 30"/>
+    <path d="M17 24 Q17 24 24 24 Q28 24 31 21"/>
+  </g>
+</svg>

emblems/emblem-repo-unpushed.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48">
+  <circle cx="24" cy="24" r="21" fill="#2f6f4f" stroke="#173c29" stroke-width="1.5"/>
+  <g fill="none" stroke="#e7f5ec" stroke-width="3.5" stroke-linecap="round" stroke-linejoin="round">
+    <path d="M24 32 L24 15"/>
+    <path d="M16 22 L24 14 L32 22"/>
+  </g>
+</svg>