"""find_careers_page(): orchestrate the Stage 2 tier cascade.

Scaffold stub -- not implemented yet.
"""
# TODO (Stage 2): implement per CLAUDE.md "Stage 2 — Find careers page (cascade, return on first hit)".
# Cascade order (return early on first success):
#   1. ATS detection  → ats.detect_and_fetch()
#   2. URL patterns   → heuristics.probe_url_patterns()
#   3. Homepage scan  → heuristics.scan_homepage_links()
#   4. Sitemap        → heuristics.parse_sitemap()
#   5. Cheap-LLM      → classify_llm.classify_careers_link()
#   6. Browser agent  → agent_fallback.run_fused_agent()  (also handles Stage 3)
# Returns (careers_url: str | None, method: str, ats_name: str | None).