feat(billing): B1 — add stripe SDK dependency

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

uv.lock

@@ -1392,6 +1392,7 @@ dependencies = [
     { name = "pyyaml" },
     { name = "quart" },
     { name = "resend" },
+    { name = "stripe" },
     { name = "weasyprint" },
 ]
 
@@ -1413,6 +1414,7 @@ requires-dist = [
     { name = "pyyaml", specifier = ">=6.0" },
     { name = "quart", specifier = ">=0.19.0" },
     { name = "resend", specifier = ">=2.22.0" },
+    { name = "stripe", specifier = ">=14.4.0" },
     { name = "weasyprint", specifier = ">=68.1" },
 ]
 
@@ -2519,6 +2521,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/f1/7b/ce1eafaf1a76852e2ec9b22edecf1daa58175c090266e9f6c64afcd81d91/stack_data-0.6.3-py3-none-any.whl", hash = "sha256:d5558e0c25a4cb0853cddad3d77da9891a08cb85dd9f9f91b9f8cd66e511e695", size = 24521, upload-time = "2023-09-30T13:58:03.53Z" },
 ]
 
+[[package]]
+name = "stripe"
+version = "14.4.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "requests" },
+    { name = "typing-extensions" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/6a/ec/0f17cff3f7c91b0215266959c5a2a96b0bf9f45ac041c50b99ad8f9b5047/stripe-14.4.0.tar.gz", hash = "sha256:ddaa06f5e38a582bef7e93e06fc304ba8ae3b4c0c2aac43da02c84926f05fa0a", size = 1472370, upload-time = "2026-02-25T17:52:40.905Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/38/09/fcecad01d76dbe027015dd559ec1b6dccfc319c2540991dde4b1de81ba34/stripe-14.4.0-py3-none-any.whl", hash = "sha256:357151a816cd0bb012d6cb29f108fae50b9f6eece8530d7bc31dfa90c9ceb84c", size = 2115405, upload-time = "2026-02-25T17:52:39.128Z" },
+]
+
 [[package]]
 name = "tenacity"
 version = "9.1.4"

web/pyproject.toml

@@ -22,6 +22,7 @@ dependencies = [
     "httpx>=0.27.0",
     "google-api-python-client>=2.100.0",
     "google-auth>=2.23.0",
+    "stripe>=14.4.0",
 ]
 
 [build-system]