Redact tool: rich UI, multilingual, engine choice, output formats

- Custom inline form (EN/NO/UK/PL lang switcher) replacing generic stub
- Engine selector: Azure gpt-4o-mini (default), gpt-4o, GPU cuttlefish, regex-only
- Entity type toggles: names, organisations, places, dates of birth
- Output formats: contextual role tags, generic [PERSON], Norwegian pseudonyms
- Keep officials mode: judges/experts kept as [JUDGE: Andersen] format
- Exempt names list: specific names excluded from redaction
- Hint paragraphs explaining each option in all four languages
- Backend: engine routing, callGpuLlm(), applyGenericTags(), applyPseudonymization()
- AzureOpenAiGateway: withDeployment() clone pattern for per-call model override

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

includes/AzureOpenAiGateway.php

@@ -40,6 +40,13 @@ final class DbnAzureOpenAiGateway
         return $missing;
     }
 
+    public function withDeployment(string $deployment): static
+    {
+        $clone = clone $this;
+        $clone->config['chat_deployment'] = $deployment;
+        return $clone;
+    }
+
     public function chatDeployment(): string
     {
         return (string)$this->config['chat_deployment'];