feat(tools): reposition as Do Better Legal two-track Norwegian-law MCP

De-family-ify shared JSON tools (persona-aware routing + neutral base
prompt), make the verification review pick its engine per track
(family/child-welfare -> dbn-legal-agent-v3, others -> gpt-4o interim),
and route product-name strings through dbnToolsProductName(). Rebrand the
MCP/tools surface (mcp.php + i18n mcp_* strings) to Do Better Legal.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

includes/BvjAnalyzerAgent.php

@@ -847,9 +847,10 @@ PROMPT;
             : '';
 
         $docExcerpt = mb_substr($docText, 0, 8000, 'UTF-8');
+        $product    = dbnToolsProductName();
 
         $prompt = <<<PROMPT
-You are Do Better Norge Legal Tools. Produce a structured Barnevernet case analysis for: {$roleStr}.
+You are {$product} Tools. Produce a structured Barnevernet case analysis for: {$roleStr}.
 
 HALLUCINATION RULES — READ FIRST:
 - You may ONLY cite statute sections (§), ECHR article numbers, ECHR application numbers, case names, and Bufdir/Statsforvalter circular references that appear verbatim in the numbered corpus sources below.
@@ -984,7 +985,8 @@ PROMPT;
             $checkFindings = dbnToolsRunLegalCheck(
                 (string)($json['advocacy_brief'] ?? ''),
                 $docType,
-                $this->resolvedPersonaPrompt
+                $this->resolvedPersonaPrompt,
+                $this->personaSlug
             );
             if (!empty($checkFindings)) {
                 if (!is_array($json['procedural_red_flags'] ?? null)) {
@@ -1379,7 +1381,7 @@ PROMPT;
             dbnToolsAbort('The family-legal corpus package is not active.', 503, 'package_unavailable');
         }
         if (!dbnToolsHasActiveSubscription($clientId, (int)$package['id'])) {
-            dbnToolsAbort('Do Better Norge does not have an active family-legal subscription.', 503, 'subscription_missing');
+            dbnToolsAbort(dbnToolsProductName() . ' does not have an active family-legal subscription.', 503, 'subscription_missing');
         }
         return $package;
     }