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feat: convert to MCP tool-calling pattern matching reference repos
Restructured to match calendar_env / repl_env pattern from OpenEnv: - MCP action space: ListToolsAction + ToolCallAction (not custom fields) - 5 tools: get_code, analyze_code, check_line, get_hint, submit_review - MCPObservation with success/error_message/tools_list/tool_result - Agent discovers tools via ListToolsAction, calls them via ToolCallAction - Gradio UI for interactive testing (server/gradio_ui.py) - Proper pyproject.toml with package-dir layout matching reference repos - Environment factory pattern: create_code_review_environment() - 32 tests, 18/18 validation checks passing Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>b2b578f -
feat: major upgrade — multi-step MDP, AST injection, 5-signal reward
- Multi-step episodes (up to 5 actions): analyze → flag_line → request_hint → submit_review Earlier decisions (flagged lines, hints) directly affect final reward - AST-based bug injection for Python (4 new injectors using ast module) alongside 5 regex-based injectors for JS/Go — 9 total injectors - 5-signal shaped reward: bug_detection (0.40), fix_quality (0.25), line_precision (0.15), comment_quality (0.10), efficiency (0.10) - 36 clean code snippets across Python/JS/Go with procedural generation - MCP tool endpoints: get_code_snippet, submit_review, request_hint, get_state - Concurrent session support (SUPPORTS_CONCURRENT_SESSIONS=True) - Difficulty tiers: easy (1 bug), medium (1-2), hard (2-3 + 1.5x multiplier) - 42 tests passing, 17/17 OpenEnv validation checks - Docker HEALTHCHECK, proper ENV vars, spec-compliant openenv.yaml Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>74c9d03
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Real-world utility boost: MBRL research pipeline
- NEW dataset.py: SemanticTransitionDataset (PyTorch-compatible) - Loads trajectory JSONL, filters by task, stats(), to_pytorch() - NEW trajectories/sample_trajectory.jsonl: 13 real transitions - ENHANCED server/app.py: - /health returns task names, version, grader info - /export_trajectory endpoint for JSONL trajectory export - ENHANCED README: - Concrete 4-step MBRL research pipeline with runnable code - Open research questions (error compounding, transfer, embeddings) - Citation framing as 'first semantic MDP benchmark' - UPDATED HF Space card: research-first description0255d22 -
CodeReviewEnv v1.0 — OpenEnv-compliant submission
- 3 tasks (easy/medium/hard) with deterministic graders - Spec-compliant inference.py with [START]/[STEP]/[END] per-task logs - Root-level baseline.py (heuristic, no API key needed) - Fixed reward double-counting bug in _apply_reward_shaping - 17/17 validation checks, 21/21 tests passing - Docker-ready on port 7860 for HF Spacesdbf5e96