feat(tools): add letter length + summary depth controls; harden korrespond §-discipline

- Summarize: new depth param (brief/standard/detailed) with depth-aware prompt
  instructions and coverage mandate; wired through API + JS
- Korrespond: new letter length param (concise/standard/detailed) injected as
  Lengde: instruction in draft pass; wired through API + JS
- Korrespond draft prompt: add §-discipline rule (cite only directly relevant §§)
  plus Opphevet guard (aligned with dobetterlegal-tools)

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

includes/KorrespondAgent.php

@@ -243,7 +243,7 @@ PROMPT;
      *
      * @return array  Final result payload (matches NDJSON 'final' event shape).
      */
-    public function generate(array $intake, array $classify, ?callable $emit = null, string $engine = 'azure_mini', ?string $persona = null): array
+    public function generate(array $intake, array $classify, ?callable $emit = null, string $engine = 'azure_mini', ?string $persona = null, string $length = 'standard'): array
     {
         $draftDeployment = ($this->azure instanceof DbnBedrockGateway)
             ? (($engine === 'claude_sonnet' || $engine === 'azure_full')
@@ -270,7 +270,7 @@ PROMPT;
         // ── Draft in Norwegian bokmål ───────────────────────────────────────────
         if ($emit) { $emit('progress', ['detail' => self::L('drafting_no', $userLang)]); }
         $draftNo = $this->draftNorwegian(
-            $intake, $classify, $retrieval['sources'], $bodyLabel, $outputType, $tone, $goal, $draftDeployment
+            $intake, $classify, $retrieval['sources'], $bodyLabel, $outputType, $tone, $goal, $draftDeployment, $length
         );
 
         // ── Self-check: verify citations, deadline, goal, tone ──────────────────
@@ -550,7 +550,8 @@ PROMPT;
 
     private function draftNorwegian(
         array $intake, array $classify, array $sources, string $bodyLabel,
-        string $outputType, string $tone, string $goal, string $draftDeployment = self::DRAFT_DEPLOYMENT
+        string $outputType, string $tone, string $goal, string $draftDeployment = self::DRAFT_DEPLOYMENT,
+        string $length = 'standard'
     ): string {
         $context     = $this->buildContextBlob($intake);
         $toneLabel   = $this->toneLabelNorsk($tone);
@@ -574,9 +575,16 @@ PROMPT;
 
         $goalLine = $goal !== '' ? ('Brukerens mål: ' . $goal) : 'Brukerens mål: ikke spesifisert — utled fra konteksten.';
 
+        $lengthLabel = match($length) {
+            'concise'  => 'Kort og poengtert — maks 2-3 avsnitt. Kom raskt til poenget.',
+            'detailed' => 'Utfyllende — inkluder full bakgrunn, alle argumenter og rettslig begrunnelse.',
+            default    => 'Standard lengde — 4-6 avsnitt.',
+        };
+
         $prompt = <<<PROMPT
 Du skriver utkast til korrespondanse til {$bodyLabel}. Skriv på norsk bokmål.
 Tone: {$toneLabel}.
+Lengde: {$lengthLabel}
 
 {$goalLine}
 
@@ -588,6 +596,8 @@ REGLER FOR LOVHENVISNINGER (kritisk):
   fra passasjelisten. Eksempel: "etter forvaltningsloven § 17 [CITE:2]".
 - Hvis du ikke finner dekning i passasjene, skriv UTEN §-henvisning.
 - IKKE finn på §-nummer eller artikkelnumre.
+- IKKE siter §-er som er markert "(Opphevet)" eller "Opphevet ved lov" i passasjene — de gjelder ikke lenger.
+- Siter kun §-er som er DIREKTE RELEVANTE for den juridiske saken i brevet. Ikke siter §-er fra lovteksten som ikke brukes i argumentasjonen.
 
 {$sourcesBlock}
 

includes/LegalTools.php

@@ -1854,7 +1854,8 @@ PROMPT;
         string $text,
         string $language = 'en',
         string $engine = 'azure_mini',
-        string $corpusContext = ''
+        string $corpusContext = '',
+        string $depth = 'standard'
     ): array {
         $text   = $this->requirePasteText($text);
         $engine = in_array($engine, ['azure_mini', 'azure_full', 'gpu'], true) ? $engine : 'azure_mini';
@@ -1870,16 +1871,34 @@ PROMPT;
                 . $text;
         }
 
+        $depthInstructions = match($depth) {
+            'brief'    => [
+                'what_we_found' => '1-2 sentence executive summary covering the main outcome',
+                'key_facts'     => 'up to 3 most important facts',
+                'coverage'      => '',
+            ],
+            'detailed' => [
+                'what_we_found' => 'comprehensive 6-10 sentence summary covering every fact, decision, party, date, and legal implication',
+                'key_facts'     => 'every fact, decision, and legal reference mentioned in the document',
+                'coverage'      => "\nCover ALL parties, ALL key decisions, ALL dates, and ALL legal references present in the document. Do not omit facts because they seem minor — err on the side of inclusion.",
+            ],
+            default    => [
+                'what_we_found' => '3-5 sentence summary covering all key outcomes, parties, and decisions',
+                'key_facts'     => 'all key facts',
+                'coverage'      => "\nCover ALL parties, ALL key decisions, ALL dates, and ALL legal references present in the document.",
+            ],
+        };
+
         $prompt = <<<PROMPT
 Summarise the following document in {$locale}. Do not invent facts not present in the text.
-Return JSON only — no extra text before or after the JSON object.
+Return JSON only — no extra text before or after the JSON object.{$depthInstructions['coverage']}
 
 {$enriched}
 
 Return this JSON structure:
 {
-  "what_we_found": "plain-language summary (2-4 sentences)",
-  "key_facts": ["fact 1", "fact 2"],
+  "what_we_found": "{$depthInstructions['what_we_found']}",
+  "key_facts": ["{$depthInstructions['key_facts']}"],
   "dates": ["date or event phrase"],
   "parties": ["party or role"],
   "legal_references_detected": ["statute, article, or case name"],