Add psycopg2

uv.lock

@@ -402,6 +402,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/6d/45/59578566b3275b8fd9157885918fcd0c4d74162928a5310926887b856a51/platformdirs-4.3.7-py3-none-any.whl", hash = "sha256:a03875334331946f13c549dbd8f4bac7a13a50a895a0eb1e8c6a8ace80d40a94", size = 18499 },
 ]
 
+[[package]]
+name = "psycopg2"
+version = "2.9.10"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/62/51/2007ea29e605957a17ac6357115d0c1a1b60c8c984951c19419b3474cdfd/psycopg2-2.9.10.tar.gz", hash = "sha256:12ec0b40b0273f95296233e8750441339298e6a572f7039da5b260e3c8b60e11", size = 385672 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/ae/49/a6cfc94a9c483b1fa401fbcb23aca7892f60c7269c5ffa2ac408364f80dc/psycopg2-2.9.10-cp313-cp313-win_amd64.whl", hash = "sha256:91fd603a2155da8d0cfcdbf8ab24a2d54bca72795b90d2a3ed2b6da8d979dee2", size = 2569060 },
+]
+
 [[package]]
 name = "pyasn1"
 version = "0.6.1"
@@ -850,6 +859,9 @@ dev = [
     { name = "mypy" },
     { name = "ruff" },
 ]
+postgres = [
+    { name = "psycopg2" },
+]
 
 [package.metadata]
 requires-dist = [
@@ -857,10 +869,11 @@ requires-dist = [
     { name = "black", marker = "extra == 'dev'", specifier = ">=25.1.0" },
     { name = "fastapi", extras = ["standard"] },
     { name = "mypy", marker = "extra == 'dev'", specifier = ">=1.15.0" },
+    { name = "psycopg2", marker = "extra == 'postgres'", specifier = ">=2.9.10" },
     { name = "pydantic" },
     { name = "pydantic-yaml" },
     { name = "ruff", marker = "extra == 'dev'", specifier = ">=0.11.6" },
     { name = "slixmpp", git = "https://codeberg.org/poezio/slixmpp" },
     { name = "sqlmodel" },
 ]
-provides-extras = ["dev"]
+provides-extras = ["postgres", "dev"]