Make dbn-legal-agent-v3 checker context-aware; wire into LegalAnalysisAgent

Three fixes:
1. bootstrap.php dbnToolsRunLegalCheck(): prepend first 350 chars of synthesis text
   to the v3 user message so it validates actual content, not just general law.
2. BvjAnalyzerAgent: fix engine guard — was skipping check for claude_sonnet/haiku;
   now skips only when dbn_legal_v3 is the synthesis model (it already IS the check).
3. LegalAnalysisAgent: add post-synthesis dbnToolsRunLegalCheck() call after Pass 3;
   add 'legal_check' key to runFullAnalysis() return.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

includes/BvjAnalyzerAgent.php

@@ -958,9 +958,10 @@ PROMPT;
             ];
         }
 
-        // Step 6b: dbn-legal-agent targeted legal Q&A check (azure + gpu engines only;
-        // skipped when dbn_legal_v3 is the synthesis engine — it already IS the legal model).
-        if (in_array($engine, ['azure_mini', 'azure_full', 'gpu'], true)) {
+        // Step 6b: dbn-legal-agent targeted legal Q&A check.
+        // Skipped only when dbn_legal_v3 is the synthesis engine — it already IS the legal model.
+        // All other engines (azure_mini, azure_full, gpu, claude_sonnet, claude_haiku) get the check.
+        if ($engine !== 'dbn_legal_v3') {
             $checkFindings = dbnToolsRunLegalCheck(
                 (string)($json['advocacy_brief'] ?? ''),
                 $docType

includes/LegalAnalysisAgent.php

@@ -362,6 +362,15 @@ PROMPT;
         $emit('progress', ['step' => 'synthesising', 'detail' => 'Synthesising overall assessment…']);
         $synth = $this->synthesise($answered, $language, $docType);
 
+        // Post-synthesis legal check — dbn-legal-agent-v3 validates the overall assessment
+        $legalCheck = [];
+        try {
+            $legalCheck = dbnToolsRunLegalCheck(
+                mb_strimwidth($synth['overall_assessment'], 0, 800),
+                $docType
+            );
+        } catch (Throwable) {}
+
         return [
             'ok'                 => true,
             'issues'             => $answered,
@@ -370,6 +379,7 @@ PROMPT;
             'disclaimer'         => $synth['disclaimer'],
             'doc_type'           => $docType,
             'model'              => self::LEGAL_MODEL,
+            'legal_check'        => $legalCheck,
             'latency_ms'         => (int)round(microtime(true) * 1000) - $startMs,
         ];
     }

includes/bootstrap.php

@@ -1175,12 +1175,19 @@ function dbnToolsRunLegalCheck(string $brief, string $docType): array
 
     $sysMsg = 'Du er en ekspert på norsk barnevernsloven og EMD-praksis. Svar alltid på norsk med korrekt juridisk terminologi. Bruk terskler fra barnevernsloven 2021: § 4-25 krever «klar nødvendighet». Strand Lobben mot Norge (37283/13) setter krav om rehabiliteringsplan før adopsjon. Aldri oppfinn paragrafnumre, saksnumre eller dommernavn.';
 
+    // Prepend a short snippet of the actual synthesis text so v3 answers in context,
+    // not just as a general law quiz. Strip HTML tags and cap at 350 chars.
+    $snippet = mb_strimwidth(strip_tags($brief), 0, 350, '…');
+    $userMsg = $snippet !== ''
+        ? "Tekst fra dokumentet:\n{$snippet}\n\n{$question}"
+        : $question;
+
     $text = '';
     try {
         $response = dbnToolsCallGpuLlm(
             [
                 ['role' => 'system', 'content' => $sysMsg],
-                ['role' => 'user', 'content' => $question],
+                ['role' => 'user', 'content' => $userMsg],
             ],
             $opts
         );