Add .env.example, .gitignore

.env.example

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+# LLM Backend: "ollama" or "openai"
+LLM_BACKEND=ollama
+
+# Ollama settings
+OLLAMA_URL=http://192.168.86.172:11434
+OLLAMA_MODEL=qwen2.5:7b
+
+# OpenAI-compatible settings (Kiro gateway, OpenRouter, etc.)
+# OPENAI_URL=http://192.168.86.11:8000
+# OPENAI_MODEL=claude-haiku-4
+# OPENAI_API_KEY=not-needed
+
+# Repo to ingest
+TARGET_REPO=https://github.com/labstack/echo.git
+
+# Parallelism
+MAX_CONCURRENT=4

.gitignore

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+devintel.db
+repos/
+__pycache__/
+*.pyc
+.env
+.venv/