Report lines of code and the main languages from cloc.txt

The project page takes the size from cloc's sum and names the three to
five largest languages, leaving out prose and data files such as Markdown,
text, CSV and JSON, and anything under 1% of the code beyond the third.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

report_generator/rendering.py

@@ -16,6 +16,7 @@ from typing import TYPE_CHECKING, Any
 from .vendor.cc_common.api import PipelineError
 from .vendor.cc_common.api import context as logging_context
 
+from .cloc import parse_cloc
 from .context import build_context
 from .layout import render_pdf
 
@@ -72,6 +73,7 @@ def render(
     """
     documents = {name: _parsed(sources, name, candidates) for name, candidates in INPUTS.items()}
     documents["metrics"] = metrics
+    documents["cloc"] = parse_cloc(sources.first("cloc.txt"))
     if all(documents.get(name) is None for name in REQUIRED_ANY):
         message = f"Scan {sources.scan_id} carries no {' and no '.join(REQUIRED_ANY)}, so no report can be built."