Initial commit: ShellGen CLI tool with LLM backends

app/.env.example

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+# ShellGen Configuration
+# Copy this file to .env and modify as needed
+
+# Ollama API endpoint
+OLLAMA_HOST=localhost:11434
+
+# Default model to use (codellama, llama2, mistral, etc.)
+OLLAMA_MODEL=codellama
+
+# Path to history database
+SHELLGEN_HISTORY_PATH=~/.shellgen/history.db
+
+# Path to custom prompt templates
+SHELLGEN_TEMPLATES_PATH=~/.shellgen/templates
+
+# Llama.cpp specific settings
+LLAMA_CPP_MODEL_PATH=~/.cache/llama-cpp/models/
+LLAMA_CPP_N_CTX=2048
+LLAMA_CPP_N_THREADS=4