fix(parse_git_status): remove false-positive detached HEAD check on upstream name

The broad `"detached" in raw_branch` sub-check matched any upstream
tracking ref containing the word "detached" (e.g. `origin/detached-work`),
causing `parse_git_status` to return `detached=True` and empty
`current_branch`/`upstream` for repos that are not in detached HEAD mode.

Remove the sub-check; `raw_branch.startswith("HEAD (detached at ")` already
covers the real detached-HEAD case and the subsequent
`normalized_branch.startswith("HEAD")` covers `HEAD (no branch)` variants.

Fixes #1373

Author: devteamaegis

packages/python-sdk/e2b/sandbox/_git/parse.py

@@ -125,9 +125,7 @@ def parse_git_status(output: str) -> GitStatus:
         ahead_part = None if ahead_start == -1 else branch_info[ahead_start + 2 : -1]
         normalized_branch = _normalize_branch_name(branch_part)
         raw_branch = branch_part
-        is_detached = raw_branch.startswith("HEAD (detached at ") or (
-            "detached" in raw_branch
-        )
+        is_detached = raw_branch.startswith("HEAD (detached at ")
 
         if is_detached or normalized_branch.startswith("HEAD"):
             detached = True

packages/python-sdk/tests/bugs/test_parse_git_status_detached.py

@@ -0,0 +1,11 @@
+from e2b.sandbox._git.parse import parse_git_status
+
+
+def test_upstream_with_detached_in_name_is_not_detached_head():
+    # Branch 'main' tracking 'origin/detached-work': NOT a detached HEAD.
+    # Previously "detached" in raw_branch caused a false positive.
+    output = "## main...origin/detached-work\n"
+    status = parse_git_status(output)
+    assert not status.detached
+    assert status.current_branch == "main"
+    assert status.upstream == "origin/detached-work"