fix: maintain Services dropdown header from one canonical source

The site header / Services mega-dropdown was duplicated across two render
systems (Astro pages via Base.astro->nav.html, and ~80 pre-rendered static
public/**/index.html pages each embedding their own copy). They had drifted
into 5 different variants (missing 'New Carrier Setup', misplaced Healthcare
column, NEW vs FREE badges, em-dash encoding differences), so
dev.performancewest.net, the order pages, and the rest of the site disagreed.

- Make site/src/partials/nav.html the single source of truth (adopts the most
  complete variant).
- Add scripts/sync_nav.py to rewrite every static page's <nav> block from
  nav.html (idempotent; --check guards against drift in CI/deploy).
- Run the sync automatically in deploy.sh and scripts/deploy-dev.sh.
- Deprecate scripts/inject_healthcare_nav.py (now delegates to sync_nav.py).
- Neutralize the broken no-op SiteNav.astro component.

All 80 headers + the Astro-built order pages now render the identical dropdown.

scripts/inject_healthcare_nav.py

@@ -1,82 +1,21 @@
 #!/usr/bin/env python3
-"""Inject the Healthcare nav column into the pre-rendered static pages.
+"""DEPRECATED -- superseded by scripts/sync_nav.py.
 
-The site is mostly static HTML under site/public/**/index.html, each carrying
-its own copy of the Services mega-dropdown (desktop + mobile). The Astro
-Base.astro layout reads src/partials/nav.html, but the static pages do NOT,
-so adding a sector to nav.html alone does not show up on those pages.
+Historically this script injected just the Healthcare column into the static
+pages, which caused the Services dropdown to drift (different sectors / badges /
+ordering on different pages). The header is now maintained in ONE place
+(site/src/partials/nav.html) and synced wholesale into every static page by
+scripts/sync_nav.py.
 
-This injects the (canonical) Healthcare block from nav.html into every static
-page that has the dropdown but is missing Healthcare. Idempotent.
+This shim simply delegates to sync_nav.py so any existing automation that still
+calls inject_healthcare_nav.py keeps working.
 """
-import re
+import runpy
 import sys
 from pathlib import Path
 
-ROOT = Path(__file__).resolve().parents[1]
-PUBLIC = ROOT / "site" / "public"
-NAV = ROOT / "site" / "src" / "partials" / "nav.html"
-
-nav = NAV.read_text()
-
-m_desk = re.search(
-    r'(<p class="text-\[11px\][^>]*>Healthcare</p>.*?npi-compliance-check.*?</a>)',
-    nav, re.S,
-)
-m_mob = re.search(
-    r'(<p class="text-xs font-semibold[^>]*>Healthcare</p>.*?npi-compliance-check.*?</a>)',
-    nav, re.S,
-)
-if not (m_desk and m_mob):
-    sys.exit("Could not extract Healthcare blocks from nav.html")
-
-DESKTOP_BLOCK = m_desk.group(1)
-MOBILE_BLOCK = m_mob.group(1)
-
-# Desktop insertion: place the Healthcare block at the end of Column 3, right
-# before the "Form a Business" CTA that closes that column.
-DESKTOP_ANCHOR = '<a href="/order/formation" class="mt-3 block py-2 px-3 text-sm font-medium text-white bg-pw-700 hover:bg-pw-800 rounded-lg text-center transition-colors">Form a Business</a>'
-
-# Mobile insertion: place Healthcare right before the mobile Corporate heading.
-MOBILE_ANCHOR = '<p class="text-xs font-semibold text-slate-500 uppercase tracking-wider px-2 pt-3">Corporate</p>'
-
-
-def inject(html: str) -> tuple[str, bool]:
-    if "services-menu" not in html:
-        return html, False  # no dropdown on this page
-    if "npi-compliance-check" in html:
-        return html, False  # already has Healthcare
-
-    changed = False
-
-    if DESKTOP_ANCHOR in html and DESKTOP_BLOCK not in html:
-        html = html.replace(DESKTOP_ANCHOR, DESKTOP_BLOCK + " " + DESKTOP_ANCHOR, 1)
-        changed = True
-
-    if MOBILE_ANCHOR in html and MOBILE_BLOCK not in html:
-        html = html.replace(MOBILE_ANCHOR, MOBILE_BLOCK + " " + MOBILE_ANCHOR, 1)
-        changed = True
-
-    return html, changed
-
-
-def main():
-    files = sorted(PUBLIC.rglob("index.html")) + [PUBLIC / "404.html"]
-    touched, skipped, nodrop = 0, 0, 0
-    for f in files:
-        if not f.exists():
-            continue
-        html = f.read_text()
-        new, changed = inject(html)
-        if changed:
-            f.write_text(new)
-            touched += 1
-        elif "services-menu" not in html:
-            nodrop += 1
-        else:
-            skipped += 1
-    print(f"injected: {touched}   already-had/partial: {skipped}   no-dropdown: {nodrop}")
-
-
 if __name__ == "__main__":
-    main()
+    print("inject_healthcare_nav.py is deprecated; delegating to sync_nav.py", file=sys.stderr)
+    target = Path(__file__).with_name("sync_nav.py")
+    sys.argv = [str(target)]
+    runpy.run_path(str(target), run_name="__main__")