Add support for Atropos Agentic RL environments (requires branch tool_call_support in Atropos atm)

- Added new environments for reinforcement learning, including `HermesSweEnv` for software engineering tasks and `TerminalTestEnv` for inline testing.
- Introduced `ToolContext` for unrestricted access to tools during reward computation.
- Updated `.gitignore` to exclude `wandb/` directory.
- Enhanced `README.md` with detailed architecture and usage instructions for Atropos environments.
- Added configuration files for SWE and terminal test environments to streamline setup.
- Removed unnecessary compiled Python files from `__pycache__`.

environments/tool_call_parsers/longcat_parser.py

@@ -0,0 +1,69 @@
+"""
+Longcat Flash Chat tool call parser.
+
+Same as Hermes but uses <longcat_tool_call> tags instead of <tool_call>.
+Based on VLLM's LongcatFlashToolParser (extends Hermes2ProToolParser).
+"""
+
+import json
+import re
+import uuid
+from typing import List, Optional
+
+from openai.types.chat.chat_completion_message_tool_call import (
+    ChatCompletionMessageToolCall,
+    Function,
+)
+
+from environments.tool_call_parsers import ParseResult, ToolCallParser, register_parser
+
+
+@register_parser("longcat")
+class LongcatToolCallParser(ToolCallParser):
+    """
+    Parser for Longcat Flash Chat tool calls.
+    Identical logic to Hermes, just different tag names.
+    """
+
+    PATTERN = re.compile(
+        r"<longcat_tool_call>\s*(.*?)\s*</longcat_tool_call>|<longcat_tool_call>\s*(.*)",
+        re.DOTALL,
+    )
+
+    def parse(self, text: str) -> ParseResult:
+        if "<longcat_tool_call>" not in text:
+            return text, None
+
+        try:
+            matches = self.PATTERN.findall(text)
+            if not matches:
+                return text, None
+
+            tool_calls: List[ChatCompletionMessageToolCall] = []
+            for match in matches:
+                raw_json = match[0] if match[0] else match[1]
+                if not raw_json.strip():
+                    continue
+
+                tc_data = json.loads(raw_json)
+                tool_calls.append(
+                    ChatCompletionMessageToolCall(
+                        id=f"call_{uuid.uuid4().hex[:8]}",
+                        type="function",
+                        function=Function(
+                            name=tc_data["name"],
+                            arguments=json.dumps(
+                                tc_data.get("arguments", {}), ensure_ascii=False
+                            ),
+                        ),
+                    )
+                )
+
+            if not tool_calls:
+                return text, None
+
+            content = text[: text.find("<longcat_tool_call>")].strip()
+            return content if content else None, tool_calls
+
+        except Exception:
+            return text, None