feat: final schema pass — sync 9 schema changes from main repo

- Rename nodes.content → nodes.notes across all services, tools, API routes, and UI
- Add dimensions.icon column support (GET/POST routes, types)
- Add nodes.event_date column (create/update flows, types)
- Drop nodes.type and nodes.is_pinned references
- Drop edges.user_feedback references
- Drop chat_memory_state table (replaced with DROP IF EXISTS in migration)
- Update schema guide files (system/schema.md)
- Add runtime migration block in sqlite-client.ts for existing databases
- Fix MCP tool schemas (external API keeps 'content' param, maps to 'notes' internally)
- Update standalone MCP server (nodeService.js, sqlite-client.js, index.js)
- Update HTTP MCP server (server.js, stdio-server.js)
- Update all extraction tools (paper, website, youtube)
- Update all UI components (FocusPanel, ThreePanelLayout, GridView, ListView, FolderViewOverlay)
- TypeScript: 0 errors

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

src/tools/database/updateEdge.ts

@@ -3,13 +3,12 @@ import { z } from 'zod';
 import { edgeService } from '@/services/database/edges';
 
 export const updateEdgeTool = tool({
-  description: 'Update edge context/source/feedback',
+  description: 'Update edge context/source',
   inputSchema: z.object({
     edge_id: z.number().describe('The ID of the edge to update'),
     updates: z.object({
       context: z.record(z.any()).optional().describe('Updated context information for this edge - can include explanation, relationship type, strength, notes, etc.'),
       source: z.enum(['user', 'ai_similarity', 'helper_name']).optional().describe('Updated source classification for this edge'),
-      user_feedback: z.boolean().optional().describe('User feedback on this edge connection (true = positive, false = negative)')
     }).describe('Fields to update on the edge')
   }),
   execute: async (params) => {
@@ -46,10 +45,7 @@ export const updateEdgeTool = tool({
       const updateDescriptions = [];
       if (cleanUpdates.context) updateDescriptions.push('context');
       if (cleanUpdates.source) updateDescriptions.push(`source to ${cleanUpdates.source}`);
-      if (cleanUpdates.user_feedback !== undefined) {
-        updateDescriptions.push(`user feedback to ${cleanUpdates.user_feedback ? 'positive' : 'negative'}`);
-      }
-
+      
       return {
         success: true,
         data: updatedEdge,