feat: test-generation + issue/PR summary via slash commands (/gen-tests, /summarize)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/context.py

@@ -41,3 +41,30 @@ def pull_request():
         "base_ref": (pr.get("base") or {}).get("ref", ""),
         "head_sha": (pr.get("head") or {}).get("sha", ""),
     }
+
+
+def event_name():
+    """Name des auslösenden Events (push, pull_request, issue_comment, …)."""
+    return os.environ.get("GITHUB_EVENT_NAME", "")
+
+
+def comment_body():
+    """Body des auslösenden Kommentars (issue_comment-Event) oder ''."""
+    return (event().get("comment") or {}).get("body") or ""
+
+
+def issue():
+    """Issue/PR-Infos aus einem issue_comment-Event oder None.
+
+    Liefert dict: index, title, body, author, is_pr.
+    """
+    iss = event().get("issue")
+    if not iss:
+        return None
+    return {
+        "index": iss.get("number"),
+        "title": iss.get("title", ""),
+        "body": iss.get("body", "") or "",
+        "author": (iss.get("user") or {}).get("login", ""),
+        "is_pr": bool(iss.get("pull_request")),
+    }