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/DbnMcpRuntime.php

@@ -56,7 +56,7 @@ final class DbnMcpRuntime
                 'mode' => ['type' => 'string', 'enum' => ['standard', 'strict']],
                 'output_format' => ['type' => 'string', 'enum' => ['contextual', 'generic', 'pseudonym']],
             ], ['text']),
-            self::tool('dbn.translate', 'Translate legal document', 'Translate Norwegian family-law text with legal terminology annotations.', [
+            self::tool('dbn.translate', 'Translate legal document', 'Translate Norwegian legal text with legal terminology annotations.', [
                 'text' => $text,
                 'source_lang' => $lang,
                 'target_lang' => $lang,