korrespond v1 premiere: Bedrock routing, engine picker, journal auto-save + status

- KorrespondAgent: add resolveDeployment() helper; fix classify/translate to use
  Haiku via Bedrock, draft to use Haiku (quick) or Sonnet (thorough) — fixes broken
  withDeployment('gpt-4o-mini') calls when DBN_BEDROCK_ENABLED=true
- korrespond.php: add Quick/Thorough engine picker (case_toggle already present)
- korrespond.js: pass engine in request payload
- api/korrespond.php: accept user-selected engine, auto-save to case_tool_results
  for paid users after each successful run, update deployment log label
- CaseResults: add korr_status to listForUser SELECT, add updateStatus() method
- result-action.php: add set_status action for correspondence journal
- account.php: show status dropdown (Draft/Sent/Reply received/Resolved) for
  korrespond entries in #analyses, wire JS change handler to result-action.php

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

includes/CaseResults.php

@@ -124,7 +124,7 @@ final class CaseResults
         $db = dbnmDb();
         $stmt = $db->prepare(
             'SELECT id, user_id, owner_user_id, tool, title, used_case_context,
-                    model, latency_ms, credits_charged, pinned, created_at
+                    model, latency_ms, credits_charged, pinned, korr_status, created_at
              FROM case_tool_results
              WHERE owner_user_id = ? AND deleted_at IS NULL
              ORDER BY pinned DESC, created_at DESC
@@ -226,6 +226,27 @@ final class CaseResults
         return $stmt->rowCount() > 0;
     }
 
+    /** Update the correspondence status (korrespond tool only). */
+    public static function updateStatus(int $userId, int $id, string $status): bool
+    {
+        $allowed = ['draft', 'sent', 'replied', 'resolved'];
+        if (!in_array($status, $allowed, true)) {
+            return false;
+        }
+        if (!self::tableReady()) {
+            return false;
+        }
+        $ownerId = CaseStore::caseResolveClientId($userId);
+        $db = dbnmDb();
+        $stmt = $db->prepare(
+            "UPDATE case_tool_results
+                SET korr_status = ?
+              WHERE id = ? AND owner_user_id = ? AND tool = 'korrespond' AND deleted_at IS NULL"
+        );
+        $stmt->execute([$status, $id, $ownerId]);
+        return $stmt->rowCount() > 0;
+    }
+
     /** Human-readable Norwegian title hint per tool. */
     public static function toolLabel(string $tool): string
     {