BGG API client: disk cache, rate limiting, 202-queue retry, XML parsing

httpx client with injectable clock/sleep/rng for testability. Successful
responses cached under data/bgg_cache/ keyed by endpoint+params; 202
retries follow the spec schedule (2/5/10/30s, give up after 5); 429/503
get jittered exponential backoff; consecutive requests are spaced
rate_limit_seconds apart. Parsers (via defusedxml, per security hook)
cover search, thing (+stats/+versions), and collection, including the
Not Ranked and error-document cases.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

uv.lock

@@ -29,6 +29,7 @@ name = "bggpipe"
 version = "0.1.0"
 source = { editable = "." }
 dependencies = [
+    { name = "defusedxml" },
     { name = "httpx" },
     { name = "rapidfuzz" },
     { name = "typer" },
@@ -42,6 +43,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
+    { name = "defusedxml", specifier = ">=0.7.1" },
     { name = "httpx", specifier = ">=0.27" },
     { name = "rapidfuzz", specifier = ">=3.9" },
     { name = "typer", specifier = ">=0.12" },
@@ -71,6 +73,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/d1/d6/3965ed04c63042e047cb6a3e6ed1a63a35087b6a609aa3a15ed8ac56c221/colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6", size = 25335, upload-time = "2022-10-25T02:36:20.889Z" },
 ]
 
+[[package]]
+name = "defusedxml"
+version = "0.7.1"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/0f/d5/c66da9b79e5bdb124974bfe172b4daf3c984ebd9c2a06e2b8a4dc7331c72/defusedxml-0.7.1.tar.gz", hash = "sha256:1bb3032db185915b62d7c6209c5a8792be6a32ab2fedacc84e01b52c51aa3e69", size = 75520, upload-time = "2021-03-08T10:59:26.269Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/07/6c/aa3f2f849e01cb6a001cd8554a88d4c77c5c1a31c95bdf1cf9301e6d9ef4/defusedxml-0.7.1-py2.py3-none-any.whl", hash = "sha256:a352e7e428770286cc899e2542b6cdaedb2b4953ff269a210103ec58f6198a61", size = 25604, upload-time = "2021-03-08T10:59:24.45Z" },
+]
+
 [[package]]
 name = "h11"
 version = "0.16.0"