Add 07 PortSimEnv and the Simulation RL Environments article

README.md

@@ -53,6 +53,7 @@ Each numbered project below is a self-contained recipe: an environment, a traini
 | **04** | **SmolDataEnvs** | 5.5K+ data-analysis tasks for hill-climbing small models, graded deterministically with no LLM judge: plain prompts, verified SFT traces, and Harbor task suites. | [Collection →](https://huggingface.co/collections/FineEnvs/smoldataenvs-6ab4f2f6e09b7cb872ebc867) |
 | **05** | **SmolDataEnvs: Multi-harness RL** | One small model trained with GRPO inside four unmodified coding agents (OpenCode, Claude Code, Codex, Mini-SWE-Agent), with LFM2.5-2.6B and Qwen3.5-2B checkpoints. | [Article →](https://huggingface.co/spaces/FineEnvs/multi-harness-rl) · [Slides →](https://huggingface.co/spaces/FineEnvs/multi-harness-rl-slides) · [Collection →](https://huggingface.co/collections/FineEnvs/smoldataenvs-multi-harness-rl-6abdfaaa8d74dacd481d5212) |
 | **06** | **Multilingual** | Two OpenEnv servers: a million document pages in 22 languages with Sarvam Indic OCR Bench, and read speech in all 102 FLEURS languages. Gemma 4 trained on each to read and to hear Kannada. | [Collection →](https://huggingface.co/collections/FineEnvs/multilingual-multimodal-envs-6ac0c27c137f93e0799603e4) |
+| **07** | **PortSimEnv** | Re-plan a broken week of container-ship dockings at the Port of Barcelona, built from the port's real 2024 records and graded against a plan CP-SAT proves optimal. | [Article →](https://huggingface.co/spaces/FineEnvs/simulation-rl-environments) · [Play →](https://huggingface.co/spaces/FineEnvs/PortSimEnv) · [Collection →](https://huggingface.co/collections/FineEnvs/simulation-rl-envs) |
 
 
 # Articles & Talks
@@ -66,6 +67,7 @@ Each numbered project below is a self-contained recipe: an environment, a traini
 | 🧭 **The Ultimate Guide to Multi-Harness RL** | Training small models on SmolDataEnvs with the same tasks and reward but a different tool loop each time (TRL, native OpenCode, Harbor), and what changes. | [Read →](https://huggingface.co/spaces/FineEnvs/multi-harness-rl) |
 | 🎤 **Training a Coding Agent Through a Harness You Did Not Write** | Multi-harness RL talk by Sergio Paniego Blanco: one model, four unmodified coding agents, GRPO. | [Watch →](https://huggingface.co/spaces/FineEnvs/multi-harness-rl-slides) |
 | 🌍 **How to turn a game into an RL environment** | The technical intuition, end to end: curating the data, designing the environment, shipping it with OpenEnv, and training a 4B against it with TRL. | [Read →](https://huggingface.co/spaces/FineEnvs/geoguesser-article) |
+| 🚢 **Simulation RL Environments** | Turning real-world work into RL environments. Part 1 builds PortSimEnv from the Port of Barcelona's 2024 records and grades every plan against a proven optimum. | [Read →](https://huggingface.co/spaces/FineEnvs/simulation-rl-environments) |
 
 
 # Environments