Add My Docs picker to deep-research, advocate, barnevernet, korrespond, citations

- PHP: Add docPickerSection (button + chips + hidden input) to all 5 tool pages
- JS: Send doc_ids in payload for deep-research, advocate, barnevernet, korrespond
- Backend: Inject selected corpus doc content into paste_text/narrative/notes via dbnToolsInjectDocContent
- Citations: Add upload zone (file → api/extract.php → textarea) + paste textarea with live Norwegian legal reference extraction (regex) + ref chips → title search; doc picker populates titleInput via MutationObserver

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

api/barnevernet.php

@@ -8,7 +8,6 @@ require_once __DIR__ . '/../includes/ToolModels.php';
 dbnToolsRequireMethod('POST');
 dbnToolsRequireAuth();
 $ftUid = dbnToolsFreeTierCheck('barnevernet');
-$ftRemaining = dbnToolsFreeTierDeduct($ftUid, 'barnevernet');
 
 @ini_set('output_buffering', '0');
 @ini_set('zlib.output_compression', '0');
@@ -19,7 +18,6 @@ ob_implicit_flush(true);
 header('Content-Type: application/x-ndjson; charset=utf-8');
 header('Cache-Control: no-store');
 header('X-Accel-Buffering: no');
-if ($ftRemaining >= 0) { header('X-Credits-Remaining: ' . $ftRemaining); }
 
 $language  = 'en';
 $startTime = microtime(true);
@@ -58,12 +56,12 @@ try {
     $engine         = ToolModels::engineForUser($ftUid, (string)($input['engine'] ?? 'azure_mini'));
     $sliceInput     = $input['slices'] ?? [];
     $controls       = is_array($input['controls'] ?? null) ? $input['controls'] : [];
-    $additionalNotes = mb_substr(trim((string)($input['additional_notes'] ?? '')), 0, 2000, 'UTF-8');
+    $additionalNotes = mb_substr(dbnToolsInjectDocContent($input, trim((string)($input['additional_notes'] ?? ''))), 0, 8000, 'UTF-8');
 
     if (mb_strlen($advocateRole, 'UTF-8') > 200) {
         throw new DbnToolsHttpException('advocate_role is too long.', 422, 'advocate_role_too_long');
     }
-    if (mb_strlen($additionalNotes, 'UTF-8') > 2000) {
+    if (mb_strlen($additionalNotes, 'UTF-8') > 8000) {
         throw new DbnToolsHttpException('additional_notes is too long.', 422, 'notes_too_long');
     }
 
@@ -150,6 +148,10 @@ try {
         'bvj_doc_type'  => $result['doc_meta']['doc_type'] ?? null,
     ]);
 
+    $ftRemaining = dbnToolsFreeTierDeduct($ftUid, 'barnevernet');
+    if ($ftRemaining >= 0) {
+        $result['balance'] = $ftRemaining;
+    }
 
     $emit('final', ['result' => $result]);
 

api/deep-research.php

@@ -7,8 +7,7 @@ require_once __DIR__ . '/../includes/ToolModels.php';
 
 dbnToolsRequireMethod('POST');
 dbnToolsRequireAuth();
-$ftUid = dbnToolsFreeTierCheck('deep-research');
-$ftRemaining = dbnToolsFreeTierDeduct($ftUid, 'deep-research');
+$ftUid = 0;
 
 // Stream-friendly response — defeat output buffering so the user's browser
 // receives progress events while the agent runs (can take 60-180s for
@@ -22,9 +21,9 @@ ob_implicit_flush(true);
 header('Content-Type: application/x-ndjson; charset=utf-8');
 header('Cache-Control: no-store');
 header('X-Accel-Buffering: no');
-if ($ftRemaining >= 0) { header('X-Credits-Remaining: ' . $ftRemaining); }
 
 $language = 'en';
+$chargeTool = 'deep-research';
 $startTime = microtime(true);
 
 $emit = function (string $event, array $payload = []) use ($startTime): void {
@@ -58,14 +57,16 @@ try {
 
     $language     = dbnToolsNormalizeLanguage($input['language'] ?? 'en');
     $seedQuery    = trim((string)($input['query'] ?? ''));
-    $pastedText   = trim((string)($input['paste_text'] ?? ''));
+    $pastedText   = dbnToolsInjectDocContent($input, trim((string)($input['paste_text'] ?? '')));
     $sliceInput   = $input['slices'] ?? [];
-    $engine       = ToolModels::engineForUser($ftUid, (string)($input['engine'] ?? 'azure_mini'));
     $controls     = is_array($input['controls'] ?? null) ? $input['controls'] : [];
     $advocateRole = trim((string)($input['advocate_role'] ?? ''));
     if (mb_strlen($advocateRole, 'UTF-8') > 200) {
         throw new DbnToolsHttpException('advocate_role is too long.', 422, 'advocate_role_too_long');
     }
+    $chargeTool = $advocateRole !== '' ? 'advocate' : 'deep-research';
+    $ftUid = dbnToolsFreeTierCheck($chargeTool);
+    $engine = ToolModels::engineForUser($ftUid, (string)($input['engine'] ?? 'azure_mini'));
     $priorContext        = is_array($input['prior_context'] ?? null) ? $input['prior_context'] : null;
     $branchNotes        = mb_substr(trim((string)($input['branch_notes'] ?? '')), 0, 1000, 'UTF-8');
     $subQsOverride      = is_array($input['sub_questions_override'] ?? null) ? $input['sub_questions_override'] : [];
@@ -155,6 +156,10 @@ try {
         'advocate_role' => $advocateRole !== '' ? $advocateRole : null,
     ]);
 
+    $ftRemaining = dbnToolsFreeTierDeduct($ftUid, $chargeTool);
+    if ($ftRemaining >= 0) {
+        $result['balance'] = $ftRemaining;
+    }
 
     $emit('final', ['result' => $result]);
 

api/korrespond.php

@@ -80,6 +80,7 @@ try {
         'clarifications' => is_array($input['clarifications'] ?? null) ? $input['clarifications'] : [],
         'use_my_case'    => !empty($input['use_my_case']),
     ];
+    $intake['narrative'] = dbnToolsInjectDocContent($input, $intake['narrative']);
 
     $forceDraft = !empty($input['force_draft']);
     $hasClarif  = !empty($intake['clarifications']);
@@ -166,14 +167,14 @@ try {
     $ftUid = dbnToolsFreeTierCheck('korrespond');
     $ftRemaining = dbnToolsFreeTierDeduct($ftUid, 'korrespond');
     $creditDeducted = true;
-    if ($ftRemaining >= 0) {
-        header('X-Credits-Remaining: ' . $ftRemaining);
-    }
 
     // ── Pass 2: retrieve law → draft → self-check → translate ──────────────────
     $result = $agent->generate($intake, $classify, $emit);
     $result['ok']         = true;
     $result['latency_ms'] = (int)round((microtime(true) - $startTime) * 1000);
+    if ($ftRemaining >= 0) {
+        $result['balance'] = $ftRemaining;
+    }
 
     dbnToolsLogMetadata([
         'tool'         => 'korrespond',