Restore full README content under HF metadata

README.md

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-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+# SQL Debug Environment (`sql-debug-env`)
+
+![OpenEnv](https://img.shields.io/badge/OpenEnv-Validated-2ea44f)
+![Docker](https://img.shields.io/badge/Deploy-Docker-2496ED?logo=docker&logoColor=white)
+![Python](https://img.shields.io/badge/Python-3.11+-3776AB?logo=python&logoColor=white)
+![FastAPI](https://img.shields.io/badge/FastAPI-0.115-009688?logo=fastapi&logoColor=white)
+![Pydantic](https://img.shields.io/badge/Pydantic-v2-E92063?logo=pydantic&logoColor=white)
+![SQLite](https://img.shields.io/badge/SQLite-In--Memory-003B57?logo=sqlite&logoColor=white)
+![Uvicorn](https://img.shields.io/badge/Uvicorn-ASGI-111111)
+![OpenAI](https://img.shields.io/badge/OpenAI-Baseline_API-412991?logo=openai&logoColor=white)
+
+**Deterministic OpenEnv benchmark for real SQL debugging workflows.**
+
+**Quick links:** [Live Space](https://md896-sql-debug-env.hf.space) · [Swagger](https://md896-sql-debug-env.hf.space/docs) · [OpenAPI](https://md896-sql-debug-env.hf.space/openapi.json) · [GitHub](https://github.com/mdayan8/sql-debug-env)
+
+An OpenEnv environment for a real engineering workflow: SQL query debugging. Agents iterate on broken SQL using schema/error/sample inspection until they produce the expected result.
+
+## Abstract
+This project implements a deterministic OpenEnv benchmark for SQL debugging. It includes three graded tasks (easy -> medium -> hard), typed action/observation/reward models, dense reward shaping, reproducible behavior, Docker deployment, and a baseline inference runner with strict structured logs.
+
+## Why this matters
+- SQL debugging is a daily task in analytics and backend teams.
+- Deterministic graders allow fair model comparison.
+- Dense reward shaping supports step-by-step agent learning.
+- Fast local runtime enables quick iteration and validation.
+
+## Core Components
+- API layer: `server/main.py`
+- Environment engine: `server/env.py`
+- Episode database: `server/database.py` (in-memory SQLite)
+- Typed models: `server/models.py`
+- Reward logic: `server/reward.py`
+- Task + graders: `server/tasks/`
+- Baseline runner: `inference.py`
+
+## Architecture
+```mermaid
+flowchart LR
+    agent[Agent Or Evaluator] --> api[FastAPI API Layer]
+    api --> env[SQLDebugEnv]
+    env --> db[InMemory SQLite DB]
+    env --> tasks[Task Registry easy medium hard]
+    tasks --> grader[Deterministic Grader]
+    env --> reward[Reward Engine]
+    grader --> reward
+    reward --> api
+```
+
+## API Surface
+- `POST /reset`
+- `POST /step`
+- `GET /state`
+- `GET /tasks`
+- `GET /health`
+- `GET /benchmark`
+
+## API Docs
+- Swagger UI: `http://localhost:7860/docs`
+- ReDoc: `http://localhost:7860/redoc`
+- OpenAPI: `http://localhost:7860/openapi.json`
+
+## Action Space
+| Action | Required fields | Purpose |
+|---|---|---|
+| `submit_query` | `query` | Submit SQL candidate for execution + grading |
+| `inspect_schema` | none | Return schema metadata |
+| `inspect_error` | none | Return last execution error details |
+| `inspect_sample` | `table_name` | Return sample rows from table |
+| `reset_query` | none | Reset current query to original broken query |
+
+## Reward Design
+Reward is clamped to `[0.0, 1.0]` and combines:
+- correctness (`0.0-0.6`)
+- efficiency (`0.0-0.2`)
+- syntax_progress (`0.0-0.1`)
+- schema_bonus (`0.0-0.1`)
+- penalty deduction magnitude (`0.0-0.2`)
+
+## Task Suite
+- Easy: `easy_syntax_fix`
+- Medium: `medium_logic_fix`
+- Hard: `hard_multi_bug`
+
+## Repository Structure
+```text
+sql-debug-env/
+├── Dockerfile
+├── openenv.yaml
+├── inference.py
+├── README.md
+├── requirements.txt
+├── pyproject.toml
+├── uv.lock
+├── scripts/
+│   └── benchmark_local.py
+├── server/
+│   ├── main.py
+│   ├── env.py
+│   ├── models.py
+│   ├── database.py
+│   ├── reward.py
+│   └── tasks/
+│       ├── base.py
+│       ├── task_easy.py
+│       ├── task_medium.py
+│       └── task_hard.py
+└── tests/
+    ├── test_env.py
+    ├── test_graders.py
+    └── test_reward.py
+```
+
+## Reliability and Benchmarking
+- `openenv validate --verbose`: PASS
+- `python3 -m unittest discover -s tests -p "test_*.py"`: PASS
+- Docker smoke test: PASS (`/health`, `/tasks`, `/reset`, `/step`)
+
+Live benchmark endpoint:
+```bash
+curl "http://localhost:7860/benchmark?runs=20"
+```
+
+## Quick Start
+### Local
+```bash
+pip install -r requirements.txt
+uvicorn server.main:app --host 0.0.0.0 --port 7860
+```
+
+### Docker
+```bash
+docker build -t sql-debug-env .
+docker run -p 7860:7860 sql-debug-env
+```
+
+### Baseline Inference
+```bash
+export API_BASE_URL="https://api.openai.com/v1"
+export MODEL_NAME="gpt-4o-mini"
+export OPENAI_API_KEY="your-key"
+export HF_TOKEN="$OPENAI_API_KEY"
+export ENV_BASE_URL="http://localhost:7860"
+export SEED="1"
+python inference.py
+```
+
+## Hugging Face Spaces
+Verify deployment:
+```bash
+curl https://md896-sql-debug-env.hf.space/health
+curl -X POST https://md896-sql-debug-env.hf.space/reset -H "Content-Type: application/json" -d '{}'
+curl https://md896-sql-debug-env.hf.space/docs
+```