fix: remove duplicate YAML frontmatter in README

README.md

@@ -10,14 +10,28 @@ tags:
   - sql
   - reinforcement-learning
   - contextual-bandit
+  - linucb
+  - gepa
 ---
----
-title: Sql Agent Openenv
-emoji: 🏢
-colorFrom: yellow
-colorTo: green
-sdk: docker
-pinned: false
----
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+# SQL Agent OpenEnv
+
+An OpenEnv-compliant RL environment for SQL generation, featuring:
+
+- **LinUCB contextual bandit** — selects repair strategies based on error context
+- **GEPA (Generative Evolutionary Prompt Adaptation)** — evolves the system prompt from failure patterns
+- **3 difficulty tiers** — easy / medium / hard benchmark tasks on a SQLite e-commerce schema
+- **Shaped reward function** — success bonus, attempt penalty, error severity signal
+- **HER (Hindsight Experience Replay)** — relabels failed episodes for richer signal
+
+## OpenEnv API
+
+| Endpoint | Method | Description |
+|---|---|---|
+| `/reset` | POST | Start a new episode |
+| `/step` | POST | Execute one repair action |
+| `/state` | GET | Current environment state |
+
+## Demo
+
+Click **Demo** in the top-right to watch the agent fail, self-repair via RL, then improve through two GEPA prompt-evolution cycles (42% → 91%).