sync: temporal-awareness from private repo

- Surface created_at, updated_at, event_date in queryNodes + queryDimensionNodes responses
- Add date range filters (createdAfter/Before, eventAfter/Before) to NodeFilters + nodeService.getNodes()

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

src/services/database/nodes.ts

@@ -10,7 +10,8 @@ export class NodeService {
   // PostgreSQL path removed in SQLite-only consolidation
 
   private async getNodesSQLite(filters: NodeFilters = {}): Promise<Node[]> {
-    const { dimensions, search, limit = 100, offset = 0, sortBy, dimensionsMatch = 'any' } = filters;
+    const { dimensions, search, limit = 100, offset = 0, sortBy, dimensionsMatch = 'any',
+            createdAfter, createdBefore, eventAfter, eventBefore } = filters;
     const sqlite = getSQLiteClient();
     
     // Use nodes_v view for array-like dimensions behavior (exclude embedding BLOB for performance)
@@ -47,15 +48,33 @@ export class NodeService {
       }
     }
 
-    // Text search in title, description, and content (SQLite LIKE with COLLATE NOCASE)
+    // Text search in title, description, and notes (SQLite LIKE with COLLATE NOCASE)
     if (search) {
       query += ` AND (n.title LIKE ? COLLATE NOCASE OR n.description LIKE ? COLLATE NOCASE OR n.notes LIKE ? COLLATE NOCASE)`;
       params.push(`%${search}%`, `%${search}%`, `%${search}%`);
     }
 
+    // Temporal filters
+    if (createdAfter) {
+      query += ` AND n.created_at >= ?`;
+      params.push(createdAfter);
+    }
+    if (createdBefore) {
+      query += ` AND n.created_at < ?`;
+      params.push(createdBefore);
+    }
+    if (eventAfter) {
+      query += ` AND n.event_date >= ?`;
+      params.push(eventAfter);
+    }
+    if (eventBefore) {
+      query += ` AND n.event_date < ?`;
+      params.push(eventBefore);
+    }
+
     // Sorting logic
     if (search) {
-      // For search queries, prioritize by relevance: exact title → starts with → contains in title → description → content
+      // For search queries, prioritize by relevance: exact title → starts with → contains in title → description → notes
       query += ` ORDER BY
         CASE WHEN LOWER(n.title) = LOWER(?) THEN 1 ELSE 6 END,
         CASE WHEN LOWER(n.title) LIKE LOWER(?) THEN 2 ELSE 6 END,
@@ -68,7 +87,7 @@ export class NodeService {
         `${search}%`,     // Starts with search term
         `%${search}%`,    // Contains in title
         `%${search}%`,    // Contains in description
-        `%${search}%`     // Contains in content
+        `%${search}%`     // Contains in notes
       );
     } else if (sortBy === 'edges') {
       // Sort by edge count (most connected first)

src/tools/database/queryDimensionNodes.ts

@@ -5,7 +5,7 @@ import { formatNodeForChat } from '../infrastructure/nodeFormatter';
 import type { Node } from '@/types/database';
 
 export const queryDimensionNodesTool = tool({
-  description: 'Query all nodes within a specific dimension. Returns nodes sorted by edge count (most connected first).',
+  description: 'Get nodes in a dimension, sorted by connection count.',
   inputSchema: z.object({
     dimension: z.string().describe('The dimension name to query nodes from'),
     limit: z.number().optional().default(20).describe('Maximum number of nodes to return (default: 20)'),
@@ -43,6 +43,9 @@ export const queryDimensionNodesTool = tool({
           }),
           edgeCount: node.edge_count || 0,
           dimensions: node.dimensions || [],
+          created_at: node.created_at,
+          updated_at: node.updated_at,
+          event_date: node.event_date ?? null,
         };
 
         if (includeContent && node.notes) {

src/tools/database/queryNodes.ts

@@ -10,7 +10,11 @@ export const queryNodesTool = tool({
     filters: z.object({
       dimensions: z.array(z.string()).describe('Filter by dimensions (e.g., ["research", "ai", "technology"]). Replaces old type/stage filtering.').optional(),
       search: z.string().describe('Search term to match against title or notes').optional(),
-      limit: z.number().min(1).max(50).default(10).describe('Maximum number of results to return')
+      limit: z.number().min(1).max(50).default(10).describe('Maximum number of results to return'),
+      createdAfter: z.string().optional().describe('ISO date (YYYY-MM-DD). Only return nodes created on or after this date.'),
+      createdBefore: z.string().optional().describe('ISO date (YYYY-MM-DD). Only return nodes created before this date.'),
+      eventAfter: z.string().optional().describe('ISO date (YYYY-MM-DD). Only return nodes with event_date on or after this date.'),
+      eventBefore: z.string().optional().describe('ISO date (YYYY-MM-DD). Only return nodes with event_date before this date.'),
     }).optional()
   }),
   execute: async ({ filters = {} }) => {
@@ -47,6 +51,9 @@ export const queryNodesTool = tool({
               id: node.id,
               title: node.title,
               dimensions: node.dimensions || [],
+              created_at: node.created_at,
+              updated_at: node.updated_at,
+              event_date: node.event_date ?? null,
               formatted_display: formatted,
             }],
             count: 1,
@@ -65,7 +72,11 @@ export const queryNodesTool = tool({
       const nodesPromise: Promise<Node[] | undefined> = nodeService.getNodes({
         limit,
         dimensions: filters.dimensions,
-        search: filters.search
+        search: filters.search,
+        createdAfter: filters.createdAfter,
+        createdBefore: filters.createdBefore,
+        eventAfter: filters.eventAfter,
+        eventBefore: filters.eventBefore,
       });
 
       const nodes = await Promise.race<Node[] | undefined>([nodesPromise, timeoutPromise]);
@@ -85,6 +96,9 @@ export const queryNodesTool = tool({
           id: node.id,
           title: node.title,
           dimensions: node.dimensions || [],
+          created_at: node.created_at,
+          updated_at: node.updated_at,
+          event_date: node.event_date ?? null,
           formatted_display: formatted
         };
       });

src/types/database.ts

@@ -3,19 +3,18 @@ export interface Node {
   id: number;
   title: string;
   description?: string;
-  notes?: string;           // Consolidated content from description + abstract + notes
+  notes?: string;             // User's notes/thoughts about this node
   link?: string;
-  event_date?: string;
+  event_date?: string | null; // When the thing actually happened (ISO 8601)
   dimensions: string[];       // Flexible dimensions replacing type + stage + segment + tags
   embedding?: Buffer;         // Node-level embedding (BLOB data)
   chunk?: string;
-  metadata?: any;            // Flexible metadata storage from extras + chunk_status + sub_type
+  metadata?: any;            // Flexible metadata storage
   created_at: string;
   updated_at: string;
-        // Legacy pin flag (read-only, slated for removal)
   edge_count?: number;       // Derived count of edges, included in some queries
 
-  // Optional embedding fields (restored from migration)
+  // Optional embedding fields
   embedding_updated_at?: string;
   embedding_text?: string;
   chunk_status?: 'not_chunked' | 'chunking' | 'chunked' | 'error' | null;
@@ -72,6 +71,10 @@ export interface NodeFilters {
   offset?: number;
   sortBy?: 'updated' | 'edges' | 'created';  // Sort by updated_at, edge count, or created_at
   dimensionsMatch?: 'any' | 'all';  // 'any' = OR (default), 'all' = AND
+  createdAfter?: string;     // ISO date (YYYY-MM-DD) — nodes created on or after
+  createdBefore?: string;    // ISO date (YYYY-MM-DD) — nodes created before
+  eventAfter?: string;       // ISO date (YYYY-MM-DD) — nodes with event_date on or after
+  eventBefore?: string;      // ISO date (YYYY-MM-DD) — nodes with event_date before
 }
 
 export interface ChunkData {
@@ -118,6 +121,7 @@ export interface DatabaseError {
 export interface Dimension {
   name: string;
   description?: string | null;
+  icon?: string | null;
   is_priority: boolean;
   updated_at: string;
 }