Add SuperESP (v2) model card

superesp/README.md

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+# Atome LM v2 — SuperESP heads
+
+Signed, on-device classifier "heads" for the [Atome LM](https://github.com/TilelliLab/atome-lm)
+ternary (1.58-bit) engine. Each head runs **on the ESP32 itself**, bit-exact to the Python
+reference, instead of generating text.
+
+- **Heads:** agri, voice, motion, sound-scene, anomaly, air, os-telemetry, power/NILM,
+  occupancy, wearable, water, forecast (+ regression).
+- **Files:** `*.atomecl` (signed head blob), `*.att.json` (Ed25519 attestation),
+  `*.tok.json` (tokenizer), `suite_pubkey.txt` (public verification key),
+  `RESULTS.json` / `PARITY.json` / `ATTESTATION.json` (held-out metrics + parity).
+- **Verified:** 12/12 ran on a physical ESP32-WROOM-32. Several heads ship on clearly-labelled
+  physics-grounded synthetic data — retrain on your own data via the kit's `train --csv` path.
+- **License:** Apache-2.0. Code + installer: https://github.com/TilelliLab/atome-lm (v2.0).