Add GPT-5.5 compaction model aliases

Author: alfozan

src/agents/sandbox/capabilities/compaction.py

@@ -30,6 +30,9 @@ def _model_context_windows(models: tuple[str, ...], context_window: int) -> dict
             "gpt-5.4-pro",
             "gpt-5.4-pro-2026-03-05",
             "gpt-5.5",
+            "gpt-5.5-2026-04-23",
+            "gpt-5.5-pro",
+            "gpt-5.5-pro-2026-04-23",
             "gpt-4.1",
             "gpt-4.1-2025-04-14",
             "gpt-4.1-mini",

tests/sandbox/test_compaction.py

@@ -9,6 +9,9 @@
         ("gpt-5.4", 1_047_576),
         ("gpt-5.4-pro", 1_047_576),
         ("gpt-5.5", 1_047_576),
+        ("gpt-5.5-2026-04-23", 1_047_576),
+        ("gpt-5.5-pro", 1_047_576),
+        ("gpt-5.5-pro-2026-04-23", 1_047_576),
         ("gpt-5.3-codex", 400_000),
         ("gpt-5.4-mini", 400_000),
         ("gpt-4.1", 1_047_576),