chore: add Makefile + .env.example for rmi-backend

Makefile: standard targets (install/dev/build/lint/format/check/
typecheck/test/test-all/security/ci/clean) matching fleet convention.

.env.example: documents all env vars used by the backend:
- Runtime, Database, Auth, CORS, Rate limiting
- AI providers (Ollama, OpenRouter, DeepSeek, HuggingFace)
- Langfuse observability
- External APIs (CoinGecko, Etherscan, Birdeye, GoPlus, Basescan)
- Supabase, Telegram bot, Scan limits, Apify, RAG

.env.example

@@ -0,0 +1,65 @@
+# RMI Backend — Environment Variables
+# Copy this to .env and fill in real values for local dev.
+# DO NOT commit .env — it's in .gitignore.
+
+# ── Runtime ──────────────────────────────────────────────────────
+ENVIRONMENT=dev
+LOG_LEVEL=INFO
+PORT=8000
+
+# ── Database / Cache ────────────────────────────────────────────
+DATABASE_URL=postgresql+asyncpg://rmi:rmi@localhost/rmi
+REDIS_URL=redis://localhost:6379/0
+
+# ── Auth ────────────────────────────────────────────────────────
+JWT_SECRET=dev-secret-CHANGE-ME
+JWT_ALGORITHM=HS256
+JWT_EXPIRE_MINUTES=1440
+
+# ── CORS ────────────────────────────────────────────────────────
+CORS_ORIGINS=["*"]
+
+# ── Rate limiting ───────────────────────────────────────────────
+RATE_LIMIT_PER_MINUTE=100
+
+# ── AI providers ────────────────────────────────────────────────
+OLLAMA_URL=http://localhost:11434
+OPENROUTER_API_KEY=
+HUGGINGFACE_TOKEN=
+DEEPSEEK_API_KEY=
+OLLAMA_API_KEY=
+
+# ── Langfuse v4 (observability) ─────────────────────────────────
+LANGFUSE_PUBLIC_KEY=
+LANGFUSE_SECRET_KEY=
+LANGFUSE_HOST=http://localhost:3002
+
+# ── External APIs ───────────────────────────────────────────────
+COINGECKO_API_KEY=
+ETHERSCAN_API_KEY=
+BIRDEYE_API_KEY=
+GOPLUS_API_KEY=
+BASESCAN_API_KEY=
+
+# ── Supabase (vector embeddings) ────────────────────────────────
+SUPABASE_URL=
+SUPABASE_SERVICE_KEY=
+
+# ── Telegram Bot ────────────────────────────────────────────────
+RUGMUNCH_BOT_TOKEN=
+TELEGRAM_ALLOWED_USERS=7075336557
+RMI_BACKEND_URL=http://localhost:8000
+BOT_DB_PATH=/root/backend/data/bot_users.db
+
+# ── Scan rate limits ─────────────────────────────────────────────
+FREE_SCAN_LIMIT=5
+PRO_SCAN_LIMIT=100
+ELITE_SCAN_LIMIT=0
+RMI_INTERNAL_KEY=rmi-internal-2026
+
+# ── Apify ────────────────────────────────────────────────────────
+APIFY_API_TOKEN=
+
+# ── RAG ──────────────────────────────────────────────────────────
+RAG_EMBEDDING_DIM=0
+RAG_TABLE_DIM=640

Makefile

@@ -0,0 +1,49 @@
+.PHONY: help install dev build lint format check test typecheck security ci clean
+
+help: ## Show this help
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-20s\033[0m %s\n", $$1, $$2}'
+
+install: ## Install dependencies
+	pip install -e ".[dev]"
+	pip install -r requirements.txt
+
+dev: ## Start dev server
+	uvicorn app.main:app --reload --host 0.0.0.0 --port 8000
+
+build: ## Build Docker image
+	docker build -t rmi-backend .
+
+lint: ## Lint with ruff
+	ruff check app/ tests/
+
+format: ## Format with ruff (writes)
+	ruff format app/ tests/
+	ruff check --fix app/ tests/
+
+check: ## Full check: lint + format + typecheck + test
+	ruff check app/ tests/
+	ruff format --check app/ tests/
+	mypy app/ --ignore-missing-imports
+	pytest tests/ -x -q -m "not integration"
+
+typecheck: ## MyPy type check
+	mypy app/ --ignore-missing-imports
+
+test: ## Run tests (non-integration)
+	pytest tests/ -x -q -m "not integration"
+
+test-all: ## Run ALL tests including integration
+	pytest tests/ -q
+
+security: ## Security audit
+	bandit -r app/ -q
+	ruff check --select S app/ tests/
+
+ci: ## Full CI pipeline
+	ruff check app/ tests/
+	ruff format --check app/ tests/
+	mypy app/ --ignore-missing-imports
+	pytest tests/ -x -q -m "not integration"
+
+clean: ## Remove build artifacts
+	rm -rf dist build *.egg-info .pytest_cache .mypy_cache .ruff_cache