Fix Korrespond stream disconnect: emit progress before legal check

The dbnToolsRunLegalCheck call blocks for 30-120s with no output,
causing the H2 idle stream timeout (~60s) to drop the connection.

Fix: emit 'Verifying legal authorities...' progress event just before
the legal check to reset the idle timer. Also reduce legal check
timeouts from 120s/60s to 45s/30s so the call completes within the
new 60s window even if LiteLLM is slow.

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

includes/KorrespondAgent.php

@@ -91,6 +91,12 @@ final class DbnKorrespondAgent
                 'pl' => 'Sprawdzanie jakości projektu…',
                 'uk' => 'Перевірка якості чернетки…',
             ],
+            'legal_check' => [
+                'en' => 'Verifying legal authorities…',
+                'no' => 'Verifiserer rettskilder…',
+                'pl' => 'Weryfikacja źródeł prawnych…',
+                'uk' => 'Перевірка правових джерел…',
+            ],
             'translating_to' => [
                 'en' => 'Translating to {lang}…',
                 'no' => 'Oversetter til {lang}…',
@@ -257,7 +263,9 @@ PROMPT;
         if ($emit) { $emit('progress', ['detail' => self::L('quality_check', $userLang)]); }
         $checked = $this->selfCheck($draftNo, $retrieval['sources'], $classify, $goal, $tone);
 
-        // ── Legal check: dbn-legal-agent-v2 threshold verification ────────────────
+        // ── Legal check: dbn-legal-agent-v3 threshold verification ────────────────
+        // Emit progress to keep H2 stream alive during the blocking LiteLLM call (60s idle timeout)
+        if ($emit) { $emit('progress', ['detail' => self::L('legal_check', $userLang)]); }
         $legalCheck = [];
         try {
             $legalCheck = dbnToolsRunLegalCheck($checked['draft'], $body);
@@ -775,6 +783,7 @@ EOT,
         if ($emit) { $emit('progress', ['detail' => self::L('check_and_authorities', $userLang)]); }
         $checked = $this->selfCheck($refinedNo, $retrieval['sources'], $classify, $goal, $tone);
 
+        if ($emit) { $emit('progress', ['detail' => self::L('legal_check', $userLang)]); }
         $legalCheckRefine = [];
         try {
             $legalCheckRefine = dbnToolsRunLegalCheck($checked['draft'], $body);

includes/bootstrap.php

@@ -949,7 +949,7 @@ function dbnToolsRunLegalCheck(string $brief, string $docType): array
         'model'       => 'dbn-legal-agent-v3',
         'temperature' => 0.1,
         'max_tokens'  => 350,
-        'timeout'     => 120,
+        'timeout'     => 45,
         // No 'json' key — plain narrative, no response_format flag
     ];
 
@@ -977,7 +977,7 @@ function dbnToolsRunLegalCheck(string $brief, string $docType): array
                     ['role' => 'system', 'content' => $sysMsg],
                     ['role' => 'user', 'content' => $question],
                 ],
-                array_merge($opts, ['model' => 'qwen2.5:7b', 'timeout' => 60])
+                array_merge($opts, ['model' => 'qwen2.5:7b', 'timeout' => 30])
             );
             $text = trim((string)($fallback['choices'][0]['message']['content'] ?? ''));
         } catch (Throwable $e) {