Add model card

README.md

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+---
+license: mit
+pipeline_tag: text-generation
+tags:
+  - markovmodel
+  - aprender
+  - rust
+model-index:
+  - name: aprender-shell-markov-3gram-20251127
+    results:
+      - task:
+          type: text-generation
+        metrics:
+          - name: vocab_size
+            type: custom
+            value: 400
+          - name: ngram_count
+            type: custom
+            value: 712
+---
+
+# Shell Completion Model
+
+Markov chain model trained on shell command history for intelligent tab completion
+
+## Training Data
+
+- **Source:** shell_history
+- **Samples:** 401
+
+## Framework
+
+- **Version:** aprender 0.11.0