Git-Status Endpoint mit Outgoing-Commits und Dashboard-Badges

- GET /api/sessions/{id}/git-status: Parsed git status --porcelain in add/edit/delete Listen
- Outgoing-Commits: Zählt unpushed Commits via git rev-list --count @{u}..HEAD
- Dashboard: Zeigt Git-Badges asynchron pro Session (+N, ~N, -N, ↑N)
- CSS: Farbige Badges (grün=add, orange=edit, rot=delete, blau=outgoing)

wwwroot/css/dashboard.css

@@ -114,3 +114,37 @@
   overflow: hidden;
   text-overflow: ellipsis;
 }
+
+.card-git-status {
+  display: flex;
+  align-items: center;
+  gap: var(--badge-spacing);
+  opacity: 1;
+}
+
+.git-badge {
+  padding: var(--badge-padding);
+  font-family: var(--mono);
+  font-size: var(--mono-size);
+  border-radius: var(--border-radius);
+}
+
+.git-add {
+  background: rgba(68, 170, 17, 0.15);
+  color: var(--secondary);
+}
+
+.git-edit {
+  background: rgba(255, 170, 0, 0.15);
+  color: var(--warning);
+}
+
+.git-delete {
+  background: rgba(255, 102, 102, 0.15);
+  color: var(--dangerous);
+}
+
+.git-outgoing {
+  background: rgba(100, 149, 237, 0.15);
+  color: var(--primary);
+}