Initial commit: cross-platform MiMo-to-Anthropic local gateway

Adds a FastAPI-based local proxy that remaps Claude model IDs to Xiaomi
MiMo and forwards requests to MiMo's Anthropic-compatible API. Includes
launchers for Windows (start.ps1), macOS/Linux (start.sh), and Docker.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

start.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Load .env into the environment (skip comments and blank lines)
+if [ -f .env ]; then
+  while IFS= read -r line; do
+    line="${line%%#*}"        # strip inline comments
+    line="$(echo "$line" | xargs)"  # trim whitespace
+    [ -z "$line" ] && continue
+    case "$line" in *=*) ;; *) continue ;; esac
+    key="${line%%=*}"
+    val="${line#*=}"
+    val="${val%\"}"
+    val="${val#\"}"
+    export "$key=$val"
+  done < .env
+fi
+
+if [ -z "${MIMO_API_KEY:-}" ]; then
+  echo "Error: MIMO_API_KEY is not set. Copy .env.example to .env and add your Xiaomi MiMo API key." >&2
+  exit 1
+fi
+
+HOST="${HOST:-127.0.0.1}"
+PORT="${PORT:-8787}"
+
+# Prefer python3, fall back to python
+if command -v python3 >/dev/null 2>&1; then
+  PYTHON=python3
+elif command -v python >/dev/null 2>&1; then
+  PYTHON=python
+else
+  echo "Error: Python 3.11 or newer was not found. Install Python, then run this script again." >&2
+  exit 1
+fi
+
+exec "$PYTHON" -m uvicorn mimo_gateway:app --host "$HOST" --port "$PORT"