Remove advanced search functionality from search-server and SessionSearch classes

- Deleted the advanced_search tool from the search-server.ts file, which combined full-text search with structured filters for observations and sessions.
- Removed the advancedSearch method from the SessionSearch class, which handled the logic for performing advanced searches using FTS5 and structured filters.

src/servers/search-server.ts

@@ -686,80 +686,6 @@ const tools = [
         };
       }
     }
-  },
-  {
-    name: 'advanced_search',
-    description: 'Advanced search combining full-text search with structured filters across both observations and sessions. IMPORTANT: Always use index format first (default) to get an overview with minimal token usage, then use format: "full" only for specific items of interest.',
-    inputSchema: z.object({
-      textQuery: z.string().optional().describe('Optional text query for FTS5 search'),
-      format: z.enum(['index', 'full']).default('index').describe('Output format: "index" for titles/dates only (default, RECOMMENDED for initial search), "full" for complete details (use only after reviewing index results)'),
-      searchSessions: z.boolean().default(true).describe('Include session summaries in results'),
-      ...filterSchema.shape
-    }),
-    handler: async (args: any) => {
-      try {
-        const { format = 'index', ...searchArgs } = args;
-        const results = search.advancedSearch(searchArgs);
-
-        const totalResults = results.observations.length + results.sessions.length;
-
-        if (totalResults === 0) {
-          return {
-            content: [{
-              type: 'text' as const,
-              text: 'No results found matching the search criteria'
-            }]
-          };
-        }
-
-        let combinedText: string;
-        if (format === 'index') {
-          const header = `Found ${totalResults} result(s) matching search criteria:\n\n`;
-          const formattedResults: string[] = [];
-
-          // Add observations
-          results.observations.forEach((obs, i) => {
-            formattedResults.push(formatObservationIndex(obs, i));
-          });
-
-          // Add sessions
-          results.sessions.forEach((session, i) => {
-            formattedResults.push(formatSessionIndex(session, i + results.observations.length));
-          });
-
-          combinedText = header + formattedResults.join('\n\n') + formatSearchTips();
-        } else {
-          const formattedResults: string[] = [];
-
-          // Add observations
-          results.observations.forEach((obs, i) => {
-            formattedResults.push(formatObservationResult(obs, i));
-          });
-
-          // Add sessions
-          results.sessions.forEach((session, i) => {
-            formattedResults.push(formatSessionResult(session, i + results.observations.length));
-          });
-
-          combinedText = formattedResults.join('\n\n---\n\n');
-        }
-
-        return {
-          content: [{
-            type: 'text' as const,
-            text: combinedText
-          }]
-        };
-      } catch (error: any) {
-        return {
-          content: [{
-            type: 'text' as const,
-            text: `Search failed: ${error.message}`
-          }],
-          isError: true
-        };
-      }
-    }
   }
 ];
 

src/services/sqlite/SessionSearch.ts

@@ -473,67 +473,6 @@ export class SessionSearch {
     return this.db.prepare(sql).all(...params) as ObservationSearchResult[];
   }
 
-  /**
-   * Advanced search combining FTS5 and structured filters
-   */
-  advancedSearch(options: {
-    textQuery?: string;
-    searchSessions?: boolean;
-  } & SearchOptions): {
-    observations: ObservationSearchResult[];
-    sessions: SessionSummarySearchResult[];
-  } {
-    const { textQuery, searchSessions = true, ...searchOptions } = options;
-
-    let observations: ObservationSearchResult[] = [];
-    let sessions: SessionSummarySearchResult[] = [];
-
-    if (textQuery) {
-      // Use FTS5 search
-      observations = this.searchObservations(textQuery, searchOptions);
-      if (searchSessions) {
-        sessions = this.searchSessions(textQuery, searchOptions);
-      }
-    } else {
-      // Pure structured query (no FTS)
-      const params: any[] = [];
-      const filterClause = this.buildFilterClause(searchOptions, params, 'o');
-
-      if (filterClause) {
-        const obsSql = `
-          SELECT o.*
-          FROM observations o
-          WHERE ${filterClause}
-          ${this.buildOrderClause(searchOptions.orderBy, false)}
-          LIMIT ? OFFSET ?
-        `;
-        params.push(searchOptions.limit || 50, searchOptions.offset || 0);
-        observations = this.db.prepare(obsSql).all(...params) as ObservationSearchResult[];
-      }
-
-      if (searchSessions) {
-        const sessionParams: any[] = [];
-        const sessionFilters = { ...searchOptions };
-        delete sessionFilters.type;
-        const sessionFilterClause = this.buildFilterClause(sessionFilters, sessionParams, 's');
-
-        if (sessionFilterClause) {
-          const sessSql = `
-            SELECT s.*
-            FROM session_summaries s
-            WHERE ${sessionFilterClause}
-            ORDER BY s.created_at_epoch DESC
-            LIMIT ? OFFSET ?
-          `;
-          sessionParams.push(searchOptions.limit || 50, searchOptions.offset || 0);
-          sessions = this.db.prepare(sessSql).all(...sessionParams) as SessionSummarySearchResult[];
-        }
-      }
-    }
-
-    return { observations, sessions };
-  }
-
   /**
    * Close the database connection
    */