build: remove markdown dependency, replaced by markdown-it-py

The markdown package is no longer used after switching the README parser
to markdown-it-py in the feature branch.

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

pyproject.toml

@@ -6,7 +6,6 @@ requires-python = ">=3.13"
 dependencies = [
     "httpx==0.28.1",
     "jinja2==3.1.6",
-    "markdown==3.10.2",
     "markdown-it-py==4.0.0",
 ]
 

uv.lock

@@ -21,7 +21,6 @@ source = { virtual = "." }
 dependencies = [
     { name = "httpx" },
     { name = "jinja2" },
-    { name = "markdown" },
     { name = "markdown-it-py" },
 ]
 
@@ -35,7 +34,6 @@ dev = [
 requires-dist = [
     { name = "httpx", specifier = "==0.28.1" },
     { name = "jinja2", specifier = "==3.1.6" },
-    { name = "markdown", specifier = "==3.10.2" },
     { name = "markdown-it-py", specifier = "==4.0.0" },
 ]
 
@@ -130,15 +128,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/62/a1/3d680cbfd5f4b8f15abc1d571870c5fc3e594bb582bc3b64ea099db13e56/jinja2-3.1.6-py3-none-any.whl", hash = "sha256:85ece4451f492d0c13c5dd7c13a64681a86afae63a5f347908daf103ce6d2f67", size = 134899, upload-time = "2025-03-05T20:05:00.369Z" },
 ]
 
-[[package]]
-name = "markdown"
-version = "3.10.2"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/2b/f4/69fa6ed85ae003c2378ffa8f6d2e3234662abd02c10d216c0ba96081a238/markdown-3.10.2.tar.gz", hash = "sha256:994d51325d25ad8aa7ce4ebaec003febcce822c3f8c911e3b17c52f7f589f950", size = 368805, upload-time = "2026-02-09T14:57:26.942Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/de/1f/77fa3081e4f66ca3576c896ae5d31c3002ac6607f9747d2e3aa49227e464/markdown-3.10.2-py3-none-any.whl", hash = "sha256:e91464b71ae3ee7afd3017d9f358ef0baf158fd9a298db92f1d4761133824c36", size = 108180, upload-time = "2026-02-09T14:57:25.787Z" },
-]
-
 [[package]]
 name = "markdown-it-py"
 version = "4.0.0"