feat: migrate README parser to markdown-it-py and refresh website

Switch readme_parser.py from regex-based parsing to markdown-it-py for
more robust and maintainable Markdown AST traversal. Update build pipeline,
templates, styles, and JS to support the new parser output. Refresh GitHub
stars data and update tests to match new parser behavior.

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

website/build.py

@@ -75,10 +75,11 @@ def group_categories(
     """Organize categories and resources into thematic section groups."""
     cat_by_name = {c["name"]: c for c in categories}
     groups = []
+    grouped_names: set[str] = set()
 
     for group_name, cat_names in SECTION_GROUPS:
+        grouped_names.update(cat_names)
         if group_name == "Resources":
-            # Resources group uses parsed resources directly
             group_cats = list(resources)
         else:
             group_cats = [cat_by_name[n] for n in cat_names if n in cat_by_name]
@@ -91,9 +92,6 @@ def group_categories(
             })
 
     # Any categories not in a group go into "Other"
-    grouped_names = set()
-    for _, cat_names in SECTION_GROUPS:
-        grouped_names.update(cat_names)
     ungrouped = [c for c in categories if c["name"] not in grouped_names]
     if ungrouped:
         groups.append({
@@ -113,13 +111,13 @@ class Entry(TypedDict):
     group: str
     stars: int | None
     owner: str | None
-    pushed_at: str | None
+    last_commit_at: str | None
 
 
 class StarData(TypedDict):
     stars: int
     owner: str
-    pushed_at: str
+    last_commit_at: str
     fetched_at: str
 
 
@@ -177,7 +175,7 @@ def extract_entries(
                 "group": group_name,
                 "stars": None,
                 "owner": None,
-                "pushed_at": None,
+                "last_commit_at": None,
                 "also_see": entry["also_see"],
             })
     return entries
@@ -210,7 +208,7 @@ def build(repo_root: str) -> None:
             sd = stars_data[repo_key]
             entry["stars"] = sd["stars"]
             entry["owner"] = sd["owner"]
-            entry["pushed_at"] = sd.get("pushed_at", "")
+            entry["last_commit_at"] = sd.get("last_commit_at", "")
 
     entries = sort_entries(entries)
 
@@ -220,7 +218,9 @@ def build(repo_root: str) -> None:
     )
 
     site_dir = website / "output"
-    site_dir.mkdir(parents=True, exist_ok=True)
+    if site_dir.exists():
+        shutil.rmtree(site_dir)
+    site_dir.mkdir(parents=True)
 
     tpl_index = env.get_template("index.html")
     (site_dir / "index.html").write_text(
@@ -240,7 +240,6 @@ def build(repo_root: str) -> None:
     static_dst = site_dir / "static"
     if static_src.exists():
         shutil.copytree(static_src, static_dst, dirs_exist_ok=True)
-    (site_dir / "CNAME").write_text("awesome-python.com\n", encoding="utf-8")
 
     print(f"Built single page with {len(categories)} categories + {len(resources)} resources")
     print(f"Total entries: {total_entries}")