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>

api/korrespond-refine.php

@@ -75,8 +75,12 @@ try {
         'language'     => $language,
     ]);
 
+    $personaSlug = (isset($input['profile']) && is_string($input['profile']) && trim($input['profile']) !== '')
+        ? trim($input['profile'])
+        : null;
+
     $agent  = new DbnKorrespondAgent();
-    $result = $agent->refine($intake, $classify, $originalDraftNo, $jurisdiction, $emit);
+    $result = $agent->refine($intake, $classify, $originalDraftNo, $jurisdiction, $emit, $personaSlug);
     $ftRemaining = dbnToolsFreeTierDeduct($ftUid, 'korrespond_refine');
     $result['ok']         = true;
     $result['latency_ms'] = (int)round((microtime(true) - $startTime) * 1000);

api/legal-analysis.php

@@ -64,7 +64,8 @@ try {
     $personaResolved = dbnToolsResolvePersona((int)$client['id'], $personaSlug);
 
     $agent = (new DbnLegalAnalysisAgent())
-        ->withPersonaPrompt($personaResolved['system_prompt'] ?? null);
+        ->withPersonaPrompt($personaResolved['system_prompt'] ?? null)
+        ->withPersonaSlug($personaResolved['slug'] ?? $personaSlug);
 
     // Pass 1 — extract issues (Azure, fast); deduct credit AFTER this succeeds
     $emit('progress', ['step' => 'extracting_issues', 'detail' => 'Identifying distinct legal issues…']);
@@ -132,7 +133,8 @@ try {
         $legalCheck = dbnToolsRunLegalCheck(
             mb_strimwidth((string)($synth['overall_assessment'] ?? ''), 0, 800),
             $docType,
-            $personaResolved['system_prompt'] ?? null
+            $personaResolved['system_prompt'] ?? null,
+            $personaResolved['slug'] ?? $personaSlug
         );
     } catch (Throwable) {}