sync: harden standalone mcp and chunk recovery

apps/mcp-server-standalone/services/nodeService.js

@@ -158,67 +158,8 @@ function sanitizeTitle(title) {
   return clean.slice(0, 160);
 }
 
-const CHUNK_SIZE = 1000;
-const CHUNK_OVERLAP = 200;
-
-function splitSourceIntoChunks(sourceText) {
-  const text = String(sourceText || '').trim();
-  if (!text) return [];
-
-  const chunks = [];
-  let start = 0;
-
-  while (start < text.length) {
-    const end = Math.min(start + CHUNK_SIZE, text.length);
-    const chunkText = text.slice(start, end).trim();
-
-    if (chunkText) {
-      chunks.push({
-        text: chunkText,
-        start_char: start,
-        end_char: end
-      });
-    }
-
-    if (end >= text.length) break;
-    start = Math.max(end - CHUNK_OVERLAP, start + 1);
-  }
-
-  return chunks;
-}
-
-function replaceNodeChunks(db, nodeId, title, sourceText) {
-  db.prepare('DELETE FROM chunks WHERE node_id = ?').run(nodeId);
-
-  const chunks = splitSourceIntoChunks(sourceText);
-  if (chunks.length === 0) {
-    return 0;
-  }
-
-  const now = new Date().toISOString();
-  const insertChunk = db.prepare(`
-    INSERT INTO chunks (node_id, chunk_idx, text, embedding_type, metadata, created_at)
-    VALUES (?, ?, ?, ?, ?, ?)
-  `);
-
-  chunks.forEach((chunk, index) => {
-    insertChunk.run(
-      nodeId,
-      index,
-      chunk.text,
-      'text-embedding-3-small',
-      JSON.stringify({
-        node_id: nodeId,
-        chunk_index: index,
-        start_char: chunk.start_char,
-        end_char: chunk.end_char,
-        title
-      }),
-      now
-    );
-  });
-
-  return chunks.length;
+function getChunkStatusForSource(sourceText) {
+  return normalizeString(sourceText) ? 'not_chunked' : null;
 }
 
 /**
@@ -243,7 +184,7 @@ function createNode(nodeData) {
 
   const sourceToStore = source ?? ([title, description].filter(Boolean).join('\n\n').trim() || null);
   const effectiveContextId = context_id ?? null;
-  const hasSource = !!normalizeString(sourceToStore);
+  const chunkStatus = getChunkStatusForSource(sourceToStore);
 
   const nodeId = transaction(() => {
     const stmt = db.prepare(`
@@ -258,19 +199,13 @@ function createNode(nodeData) {
       link ?? null,
       event_date ?? null,
       JSON.stringify(canonicalMetadata),
-      hasSource ? 'chunked' : null,
+      chunkStatus,
       effectiveContextId ?? null,
       now,
       now
     );
 
-    const id = Number(result.lastInsertRowid);
-
-    if (hasSource) {
-      replaceNodeChunks(db, id, title, sourceToStore);
-    }
-
-    return id;
+    return Number(result.lastInsertRowid);
   });
 
   return getNodeById(nodeId);
@@ -294,7 +229,6 @@ function updateNode(id, updates, options = {}) {
     ? buildCanonicalMetadata({ existing: existing.metadata, metadata })
     : undefined;
   const sourceWasProvided = Object.prototype.hasOwnProperty.call(updates, 'source');
-  const updatedTitle = title !== undefined ? title : existing.title;
   const normalizedSource = sourceWasProvided ? normalizeString(source) : undefined;
 
   transaction(() => {
@@ -323,7 +257,7 @@ function updateNode(id, updates, options = {}) {
     }
     if (sourceWasProvided) {
       setFields.push('chunk_status = ?');
-      params.push(normalizedSource ? 'chunked' : null);
+      params.push(getChunkStatusForSource(normalizedSource));
     }
     if (Object.prototype.hasOwnProperty.call(updates, 'context_id')) {
       setFields.push('context_id = ?');
@@ -344,10 +278,6 @@ function updateNode(id, updates, options = {}) {
       stmt.run(...params);
     }
 
-    if (sourceWasProvided) {
-      replaceNodeChunks(db, id, updatedTitle, normalizedSource || '');
-    }
-
   });
 
   return getNodeById(id);