test: add session name sanitization when fetching worktrees

tests/multi-model.test.ts

@@ -681,6 +681,22 @@ describe("core utils", () => {
       expect(worktrees[0]?.branch).toBe("opencode/my-session/gpt-5.2");
     });
 
+    test("sanitizes session name when filtering worktrees", async () => {
+      spyOn(os, "homedir").mockReturnValue("/home/user");
+      // The worktree path uses the sanitized version "my-session"
+      mockCommandResponses["git worktree list --porcelain"] = {
+        ok: true,
+        stdout: "worktree /home/user/.local/share/opencode/multi-model/my-session/gpt-5.2\nbranch refs/heads/opencode/my-session/gpt-5.2",
+        stderr: "",
+      };
+
+      // Pass unsanitized session name with spaces and special chars
+      const worktrees = await getWorktreesForSession("my session!");
+      // Should still find the worktree because it sanitizes internally
+      expect(worktrees.length).toBe(1);
+      expect(worktrees[0]?.path).toBe("/home/user/.local/share/opencode/multi-model/my-session/gpt-5.2");
+    });
+
     test("returns empty array when no matching worktrees", async () => {
       spyOn(os, "homedir").mockReturnValue("/home/user");
       mockCommandResponses["git worktree list --porcelain"] = {