fix(X13): route by נט-format availability; robust fetch error handling

Live drain surfaced three issues:
1. Tier-0 needed `h2` (httpx http2) — added to the court-fetch extra.
2. Supreme cases that carry a נט-format number (e.g. בר"מ 72182-06-25) were
   routed to the unvalidated Tier-0 and failed, even though נט המשפט serves
   Supreme cases too. classify() now parses the file-month-year triple for
   Supreme prefixes; the orchestrator routes by triple-availability:
     נט-format present → Tier-1 (validated, all courts)
     serial-only Supreme (עע"מ 5886/24) → Tier-0
     neither → clear "no public route" failure
   Validated live: בר"מ 72182-06-25 fetched via Tier-1 (5-page PDF).
3. A non-`RuntimeError` fetch exception (the h2 import error) left jobs stuck
   in 'running'. The fetch block now catches any Exception → _record_failure
   (INV-CF2/CF3), so a job always reaches a terminal state.

+ test_supreme_with_net_format_triple. Suite 11/11.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

mcp-server/src/legal_mcp/services/court_citation.py

@@ -157,15 +157,23 @@ def classify(citation: str) -> CourtCitation:
             case_number_norm=normalize_case_number(raw),
         )
 
-    # 2. Supreme Court prefix → Tier 0.
+    # 2. Supreme Court prefix → Tier 0. Still parse a נט-format triple when the
+    #    number carries one (e.g. בר"מ 72182-06-25): נט המשפט serves Supreme
+    #    cases too, so a triple lets the orchestrator route to the validated
+    #    Tier-1 flow instead of the serial-only Tier-0.
     m = _SUPREME_RX.search(text)
     if m:
         raw = m.group(2)
+        norm = normalize_case_number(raw)
+        filed = _split_filed(norm)
         return CourtCitation(
             tier="supreme",
             court_prefix=m.group(1),
             case_number_raw=raw,
-            case_number_norm=normalize_case_number(raw),
+            case_number_norm=norm,
+            file_number=filed[0] if filed else None,
+            month=filed[1] if filed else None,
+            year=filed[2] if filed else None,
         )
 
     # 3. District / admin prefix → Tier 1.