fix(compliance-check): always render 8 doc types + 4 BMW GT-gap fixes

Always-show-8 (user-requested):
- agent_compliance_check_routes.py: _pad_results_with_missing pads the
  results list to always include all 8 canonical doc_types in canonical
  order. Missing types get a placeholder DocCheckResult with error=
  'Nicht eingereicht' + scenario='missing'.
- agent_doc_check_report.py: NICHT EINGEREICHT status label (neutral),
  friendly grey body block instead of red error.
- ChecklistView.tsx: 'Nicht eingereicht' chip (neutral grey, not red
  'Fehler'); SCENARIO_LABELS adds missing entry + header chip counter.

Impressum-Regression fix (#18):
- _fetch_text(url, doc_type): cookie/dse/social_media -> max_documents=1
  (CMP capture authoritative, sub-pages dilute). Other types -> =3
  (Impressum needs Versicherungsvermittler, Aufsicht, Berufsrecht sub-
  pages). 15s networkidle bail keeps timing safe.

ODR/Verbraucherstreitbeilegung filter (#19):
- _apply_profile_filter: when profile.needs_odr=True (B2C), override the
  check's default B2B-oriented hint with action-oriented B2C guidance
  pointing at Art. 14 EU-VO 524/2013 + §36 VSBG. Previously the check
  contradicted itself: 'profile says B2C' + hint 'only relevant for B2C
  online vendors'.

Registergericht regex (#20):
- impressum_checks.py: accept colon/dot/dash between keyword and city
  (BMW writes 'registergericht: münchen hrb 42243'). Add 'sitz und
  registergericht: X' as separate pattern.

Industry detection (#21):
- business_profiler.py: 'automotive' keywords broadened (antriebs,
  motor, leasing, werkstatt, probefahrt, plus brand names BMW/Mercedes/
  Audi/VW/Porsche/Opel). 'it_services' keywords narrowed — software/
  cloud/hosting are mentioned in every privacy policy and were biasing
  the result toward IT for any tech-aware company.

backend-compliance/compliance/api/agent_doc_check_report.py

@@ -184,7 +184,10 @@ def _render_document(html: list[str], r: DocCheckResult) -> None:
     cpct = r.correctness_pct
     bar_color = "green" if pct >= 80 else "yellow" if pct >= 50 else "red"
     status_label = "OK" if pct == 100 else "LUECKENHAFT" if pct >= 50 else "MANGELHAFT"
-    if r.error:
+    is_missing = bool(r.error) and r.error.startswith("Nicht eingereicht")
+    if is_missing:
+        status_label = "NICHT EINGEREICHT"
+    elif r.error:
         status_label = "FEHLER"
 
     l1_checks = [c for c in r.checks if c.level == 1]
@@ -216,7 +219,16 @@ def _render_document(html: list[str], r: DocCheckResult) -> None:
     html.append('</div></div></div>')
 
     # Body
-    if r.error:
+    if is_missing:
+        html.append(
+            '<div style="padding:12px 16px;color:#6b7280;font-size:12px;'
+            'background:#fafafa;border-top:1px solid #f3f4f6">'
+            'Keine URL oder Text fuer dieses Dokument angegeben. '
+            'Tragen Sie die Quelle im Compliance-Check Formular nach, '
+            'um diese Pflichtangabe zu pruefen.'
+            '</div>'
+        )
+    elif r.error:
         html.append(f'<div style="padding:12px 16px;color:#991b1b">{r.error}</div>')
     else:
         html.append('<div style="padding:8px 16px 12px">')