feat: add generative proxy with usage metrics

pyproject.toml

@@ -0,0 +1,23 @@
+[build-system]
+requires = ["setuptools>=69"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "phproxy"
+version = "0.1.0"
+description = "A small async image generation proxy with SQLite-backed jobs and provider keys."
+requires-python = ">=3.12"
+dependencies = [
+  "fastapi>=0.115,<1",
+  "httpx>=0.27,<1",
+  "aiosqlite>=0.20,<1",
+  "uvicorn[standard]>=0.30,<1",
+  "python-multipart>=0.0.9,<1",
+]
+
+[tool.setuptools.packages.find]
+include = ["app*"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py312"