Add new environments and enhance tool context functionality

- Introduced new environments: Terminal Test Environment and SWE Environment, each with default configurations for testing and software engineering tasks.
- Added TerminalBench 2.0 evaluation environment with comprehensive setup for agentic LLMs, including task execution and verification.
- Enhanced ToolContext with methods for uploading and downloading files, ensuring binary-safe operations.
- Updated documentation across environments to reflect new features and usage instructions.
- Refactored existing environment configurations for consistency and clarity.

environments/__init__.py

@@ -4,15 +4,18 @@ Hermes-Agent Atropos Environments
 Provides a layered integration between hermes-agent's tool-calling capabilities
 and the Atropos RL training framework.
 
-Layers:
+Core layers:
     - agent_loop: Reusable multi-turn agent loop with standard OpenAI-spec tool calling
     - tool_context: Per-rollout tool access handle for reward/verification functions
     - hermes_base_env: Abstract base environment (BaseEnv subclass) for Atropos
     - tool_call_parsers: Client-side tool call parser registry for Phase 2 (VLLM /generate)
 
 Concrete environments:
-    - terminal_test_env: Simple file-creation tasks for testing the stack
-    - hermes_swe_env: SWE-bench style tasks with Modal sandboxes
+    - terminal_test_env/: Simple file-creation tasks for testing the stack
+    - hermes_swe_env/: SWE-bench style tasks with Modal sandboxes
+
+Benchmarks (eval-only):
+    - benchmarks/terminalbench_2/: Terminal-Bench 2.0 evaluation
 """
 
 from environments.agent_loop import AgentResult, HermesAgentLoop