fix: Schema compatibility - emoji → icon column rename

Production Outline DB uses 'icon' column instead of 'emoji' for documents
and revisions. Fixed all affected queries:

- documents.ts: SELECT queries
- advanced-search.ts: Search queries
- analytics.ts: Analytics + GROUP BY
- export-import.ts: Export/import metadata
- templates.ts: Template queries + INSERT
- collections.ts: Collection document listing
- revisions.ts: Revision comparison

reactions.emoji kept unchanged (correct schema)

Tested: 448 documents successfully queried from hub.descomplicar.pt

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/tools/export-import.ts

@@ -21,7 +21,7 @@ interface ImportMarkdownArgs {
     title: string;
     content: string;
     parent_path?: string;
-    emoji?: string;
+    icon?: string;
   }>;
   create_hierarchy?: boolean;
 }
@@ -62,7 +62,7 @@ const exportCollectionToMarkdown: BaseTool<ExportCollectionArgs> = {
     const documents = await pgClient.query(`
       WITH RECURSIVE doc_tree AS (
         SELECT
-          d.id, d.title, d.text, d.emoji, d."parentDocumentId",
+          d.id, d.title, d.text, d.icon, d."parentDocumentId",
           d."createdAt", d."updatedAt", d."publishedAt",
           u.name as "authorName",
           0 as depth,
@@ -77,7 +77,7 @@ const exportCollectionToMarkdown: BaseTool<ExportCollectionArgs> = {
         UNION ALL
 
         SELECT
-          d.id, d.title, d.text, d.emoji, d."parentDocumentId",
+          d.id, d.title, d.text, d.icon, d."parentDocumentId",
           d."createdAt", d."updatedAt", d."publishedAt",
           u.name as "authorName",
           dt.depth + 1,
@@ -111,7 +111,7 @@ const exportCollectionToMarkdown: BaseTool<ExportCollectionArgs> = {
       if (includeMetadata) {
         content += '---\n';
         content += `title: "${doc.title.replace(/"/g, '\\"')}"\n`;
-        if (doc.emoji) content += `emoji: "${doc.emoji}"\n`;
+        if (doc.icon) content += `icon: "${doc.icon}"\n`;
         content += `author: "${doc.authorName || 'Unknown'}"\n`;
         content += `created: ${doc.createdAt}\n`;
         content += `updated: ${doc.updatedAt}\n`;
@@ -122,7 +122,7 @@ const exportCollectionToMarkdown: BaseTool<ExportCollectionArgs> = {
 
       // Add title as H1 if not already in content
       if (!doc.text?.startsWith('# ')) {
-        content += `# ${doc.emoji ? doc.emoji + ' ' : ''}${doc.title}\n\n`;
+        content += `# ${doc.icon ? doc.icon + ' ' : ''}${doc.title}\n\n`;
       }
 
       content += doc.text || '';
@@ -171,7 +171,7 @@ const importMarkdownFolder: BaseTool<ImportMarkdownArgs> = {
             title: { type: 'string', description: 'Document title' },
             content: { type: 'string', description: 'Markdown content' },
             parent_path: { type: 'string', description: 'Parent document path (e.g., "parent/child")' },
-            emoji: { type: 'string', description: 'Document emoji' },
+            icon: { type: 'string', description: 'Document icon' },
           },
           required: ['title', 'content'],
         },
@@ -256,7 +256,7 @@ const importMarkdownFolder: BaseTool<ImportMarkdownArgs> = {
           // Create document
           const result = await client.query(`
             INSERT INTO documents (
-              id, title, text, emoji, "collectionId", "teamId", "parentDocumentId",
+              id, title, text, icon, "collectionId", "teamId", "parentDocumentId",
               "createdById", "lastModifiedById", template, "createdAt", "updatedAt"
             )
             VALUES (
@@ -266,7 +266,7 @@ const importMarkdownFolder: BaseTool<ImportMarkdownArgs> = {
           `, [
             sanitizeInput(doc.title),
             content,
-            doc.emoji || null,
+            doc.icon || null,
             args.collection_id,
             teamId,
             parentDocumentId,