refactor: Clean up search architecture, remove experimental contextualize endpoint (#133)

* Refactor code structure for improved readability and maintainability

* Add test results for search API and related functionalities

- Created test result files for various search-related functionalities, including:
  - test-11-search-server-changes.json
  - test-12-context-hook-changes.json
  - test-13-worker-service-changes.json
  - test-14-patterns.json
  - test-15-gotchas.json
  - test-16-discoveries.json
  - test-17-all-bugfixes.json
  - test-18-all-features.json
  - test-19-all-decisions.json
  - test-20-session-search.json
  - test-21-prompt-search.json
  - test-22-decisions-endpoint.json
  - test-23-changes-endpoint.json
  - test-24-how-it-works-endpoint.json
  - test-25-contextualize-endpoint.json
  - test-26-timeline-around-observation.json
  - test-27-multi-param-combo.json
  - test-28-file-type-combo.json

- Each test result file captures specific search failures or outcomes, including issues with undefined properties and successful execution of search queries.
- Enhanced documentation of search architecture and testing strategies, ensuring compliance with established guidelines and improving overall search functionality.

* feat: Enhance unified search API with catch-all parameters and backward compatibility

- Implemented a unified search API at /api/search that accepts catch-all parameters for filtering by type, observation type, concepts, and files.
- Maintained backward compatibility by keeping granular endpoints functional while routing through the same infrastructure.
- Completed comprehensive testing of search capabilities with real-world query scenarios.

fix: Address missing debug output in search API query tests

- Flushed PM2 logs and executed search queries to verify functionality.
- Diagnosed absence of "Raw Chroma" debug messages in worker logs, indicating potential issues with logging or query processing.

refactor: Improve build and deployment pipeline for claude-mem plugin

- Successfully built and synced all hooks and services to the marketplace directory.
- Ensured all dependencies are installed and up-to-date in the deployment location.

feat: Implement hybrid search filters with 90-day recency window

- Enhanced search server to apply a 90-day recency filter to Chroma results before categorizing by document type.

fix: Correct parameter handling in searchUserPrompts method

- Added support for filter-only queries and improved dual-path logic for clarity.

refactor: Rename FTS5 method to clarify fallback status

- Renamed escapeFTS5 to escapeFTS5_fallback_when_chroma_unavailable to indicate its temporary usage.

feat: Introduce contextualize tool for comprehensive project overview

- Added a new tool to fetch recent observations, sessions, and user prompts, providing a quick project overview.

feat: Add semantic shortcut tools for common search patterns

- Implemented 'decisions', 'changes', and 'how_it_works' tools for convenient access to frequently searched observation categories.

feat: Unified timeline tool supports anchor and query modes

- Combined get_context_timeline and get_timeline_by_query into a single interface for timeline exploration.

feat: Unified search tool added to MCP server

- New tool queries all memory types simultaneously, providing combined chronological results for improved search efficiency.

* Refactor search functionality to clarify FTS5 fallback usage

- Updated `worker-service.cjs` to replace FTS5 fallback function with a more descriptive name and improved error handling.
- Enhanced documentation in `SKILL.md` to specify the unified API endpoint and clarify the behavior of the search engine, including the conditions under which FTS5 is used.
- Modified `search-server.ts` to provide clearer logging and descriptions regarding the fallback to FTS5 when UVX/Python is unavailable.
- Renamed and updated the `SessionSearch.ts` methods to reflect the conditions for using FTS5, emphasizing the lack of semantic understanding in fallback scenarios.

* feat: Add ID-based fetch endpoints and simplify mem-search skill

**Problem:**
- Search returns IDs but no way to fetch by ID
- Skill documentation was bloated with too many options
- Claude wasn't using IDs because we didn't tell it how

**Solution:**
1. Added three new HTTP endpoints:
   - GET /api/observation/:id
   - GET /api/session/:id
   - GET /api/prompt/:id

2. Completely rewrote SKILL.md:
   - Stripped complexity down to essentials
   - Clear 3-step prescriptive workflow: Search → Review IDs → Fetch by ID
   - Emphasized ID usage: "The IDs are there for a reason - USE THEM"
   - Removed confusing multi-endpoint documentation
   - Kept only unified search with filters

**Impact:**
- Token efficiency: Claude can now fetch full details only for relevant IDs
- Clarity: One clear workflow instead of 10+ options to choose from
- Usability: IDs are no longer wasted context - they're actionable

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* chore: Move internal docs to private directory

Moved POSTMORTEM and planning docs to ./private to exclude from PR reviews.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* refactor: Remove experimental contextualize endpoint

- Removed contextualize MCP tool from search-server (saves ~4KB)
- Disabled FTS5 fallback paths in SessionSearch (now vector-first)
- Cleaned up CLAUDE.md documentation
- Removed contextualize-rewrite-plan.md doc

Rationale:
- Contextualize is better suited as a skill (LLM-powered) than an endpoint
- Search API already provides vector search with configurable limits
- Created issue #132 to track future contextualize skill implementation

Changes:
- src/servers/search-server.ts: Removed contextualize tool definition
- src/services/sqlite/SessionSearch.ts: Disabled FTS5 fallback, added deprecation warnings
- CLAUDE.md: Cleaned up outdated skill documentation
- docs/: Removed contextualize plan document

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* refactor: Complete FTS5 cleanup - remove all deprecated search code

This completes the FTS5 cleanup work by removing all commented-out
FTS5 search code while preserving database tables for backward compatibility.

Changes:
- Removed 200+ lines of commented FTS5 search code from SessionSearch.ts
- Removed deprecated degraded_search_query__when_uvx_unavailable method
- Updated all method documentation to clarify vector-first architecture
- Updated class documentation to reflect filter-only query support
- Updated CLAUDE.md to remove FTS5 search references
- Clarified that FTS5 tables exist for backward compatibility only
- Updated "Why SQLite FTS5" section to "Why Vector-First Search"

Database impact: NONE - FTS5 tables remain intact for existing installations

Search architecture:
- ChromaDB: All text-based vector search queries
- SQLite: Filter-only queries (date ranges, metadata, no query text)
- FTS5 tables: Maintained but unused (backward compatibility)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* refactor: Remove all FTS5 fallback execution code from search-server

Completes the FTS5 cleanup by removing all fallback execution paths
that attempted to use FTS5 when ChromaDB was unavailable.

Changes:
- Removed all FTS5 fallback code execution paths
- When ChromaDB fails or is unavailable, return empty results with helpful error messages
- Updated all deprecated tool descriptions (search_observations, search_sessions, search_user_prompts)
- Changed error messages to indicate FTS5 fallback has been removed
- Added installation instructions for UVX/Python when vector search is unavailable
- Updated comments from "hybrid search" to "vector-first search"
- Removed ~100 lines of dead FTS5 fallback code

Database impact: NONE - FTS5 tables remain intact (backward compatibility)

Search behavior when ChromaDB unavailable:
- Text queries: Return empty results with error explaining ChromaDB is required
- Filter-only queries (no text): Continue to work via direct SQLite

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* fix: Address PR 133 review feedback

Critical fixes:
- Remove contextualize endpoint from worker-service (route + handler)
- Fix build script logging to show correct .cjs extension (was .mjs)

Documentation improvements:
- Add comprehensive FTS5 retention rationale documentation
- Include v7.0.0 removal TODO for future cleanup

Testing:
- Build succeeds with correct output logging
- Worker restarts successfully (30th restart)
- Contextualize endpoint properly removed (404 response)
- Search endpoint verified working

This addresses all critical review feedback from PR 133.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

---------

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Alex Newman
2025-11-21 18:59:23 -05:00
committed by GitHub
parent d64939c379
commit c5e68a17c8
42 changed files with 2511 additions and 559 deletions
File diff suppressed because it is too large Load Diff
+91 -151
View File
@@ -13,7 +13,8 @@ import {
/**
* Search interface for session-based memory
* Provides FTS5 full-text search and structured queries for sessions, observations, and summaries
* Provides filter-only structured queries for sessions, observations, and user prompts
* Vector search is handled by ChromaDB - this class only supports filtering without query text
*/
export class SessionSearch {
private db: Database.Database;
@@ -31,7 +32,18 @@ export class SessionSearch {
}
/**
* Ensure FTS5 tables exist (inline migration)
* Ensure FTS5 tables exist (backward compatibility only - no longer used for search)
*
* FTS5 tables are maintained for backward compatibility but not used for search.
* Vector search (Chroma) is now the primary search mechanism.
*
* Retention Rationale:
* - Prevents breaking existing installations with FTS5 tables
* - Allows graceful migration path for users
* - Tables maintained but search paths removed
* - Triggers still fire to keep tables synchronized
*
* TODO: Remove FTS5 infrastructure in future major version (v7.0.0)
*/
private ensureFTSTables(): void {
try {
@@ -134,22 +146,6 @@ export class SessionSearch {
}
}
/**
* Escape FTS5 special characters in user input
*
* FTS5 uses double quotes for phrase searches and treats certain characters
* as operators (*, AND, OR, NOT, parentheses, etc.). To prevent injection,
* we wrap user input in double quotes and escape internal quotes by doubling them.
* This converts any user input into a safe phrase search.
*
* @param text - User input to escape for FTS5 MATCH queries
* @returns Safely escaped FTS5 query string
*/
private escapeFTS5(text: string): string {
// Escape internal double quotes by doubling them (FTS5 standard)
// Then wrap the entire string in double quotes for phrase search
return `"${text.replace(/"/g, '""')}"`;
}
/**
* Build WHERE clause for structured filters
@@ -243,118 +239,78 @@ export class SessionSearch {
}
/**
* Search observations using FTS5 full-text search
* Search observations using filter-only direct SQLite query.
* Vector search is handled by ChromaDB - this only supports filtering without query text.
*/
searchObservations(query: string, options: SearchOptions = {}): ObservationSearchResult[] {
searchObservations(query: string | undefined, options: SearchOptions = {}): ObservationSearchResult[] {
const params: any[] = [];
const { limit = 50, offset = 0, orderBy = 'relevance', ...filters } = options;
// Build FTS5 match query
const ftsQuery = this.escapeFTS5(query);
params.push(ftsQuery);
// FILTER-ONLY PATH: When no query text, query table directly
// This enables date filtering which Chroma cannot do (requires direct SQLite access)
if (!query) {
const filterClause = this.buildFilterClause(filters, params, 'o');
if (!filterClause) {
throw new Error('Either query or filters required for search');
}
// Build filter conditions
const filterClause = this.buildFilterClause(filters, params, 'o');
const whereClause = filterClause ? `AND ${filterClause}` : '';
const orderClause = this.buildOrderClause(orderBy, false);
// Build ORDER BY
const orderClause = this.buildOrderClause(orderBy, true);
const sql = `
SELECT o.*, o.discovery_tokens
FROM observations o
WHERE ${filterClause}
${orderClause}
LIMIT ? OFFSET ?
`;
// Main query with FTS5
const sql = `
SELECT
o.*,
o.discovery_tokens,
observations_fts.rank as rank
FROM observations o
JOIN observations_fts ON o.id = observations_fts.rowid
WHERE observations_fts MATCH ?
${whereClause}
${orderClause}
LIMIT ? OFFSET ?
`;
params.push(limit, offset);
const results = this.db.prepare(sql).all(...params) as ObservationSearchResult[];
// Normalize rank to score (0-1, higher is better)
if (results.length > 0) {
const minRank = Math.min(...results.map(r => r.rank || 0));
const maxRank = Math.max(...results.map(r => r.rank || 0));
const range = maxRank - minRank || 1;
results.forEach(r => {
if (r.rank !== undefined) {
// Invert rank (lower rank = better match) and normalize to 0-1
r.score = 1 - ((r.rank - minRank) / range);
}
});
params.push(limit, offset);
return this.db.prepare(sql).all(...params) as ObservationSearchResult[];
}
return results;
// Vector search with query text should be handled by ChromaDB
// This method only supports filter-only queries (query=undefined)
console.warn('[SessionSearch] Text search not supported - use ChromaDB for vector search');
return [];
}
/**
* Search session summaries using FTS5 full-text search
* Search session summaries using filter-only direct SQLite query.
* Vector search is handled by ChromaDB - this only supports filtering without query text.
*/
searchSessions(query: string, options: SearchOptions = {}): SessionSummarySearchResult[] {
searchSessions(query: string | undefined, options: SearchOptions = {}): SessionSummarySearchResult[] {
const params: any[] = [];
const { limit = 50, offset = 0, orderBy = 'relevance', ...filters } = options;
// Build FTS5 match query
const ftsQuery = this.escapeFTS5(query);
params.push(ftsQuery);
// FILTER-ONLY PATH: When no query text, query session_summaries table directly
if (!query) {
const filterOptions = { ...filters };
delete filterOptions.type;
const filterClause = this.buildFilterClause(filterOptions, params, 's');
if (!filterClause) {
throw new Error('Either query or filters required for search');
}
// Build filter conditions (without type filter - not applicable to summaries)
const filterOptions = { ...filters };
delete filterOptions.type;
const filterClause = this.buildFilterClause(filterOptions, params, 's');
const whereClause = filterClause ? `AND ${filterClause}` : '';
const orderClause = orderBy === 'date_asc'
? 'ORDER BY s.created_at_epoch ASC'
: 'ORDER BY s.created_at_epoch DESC';
// Note: session_summaries don't have files_read/files_modified in the same way
// We'll need to adjust the filter clause
const adjustedWhereClause = whereClause.replace(/files_read/g, 'files_read').replace(/files_modified/g, 'files_edited');
const sql = `
SELECT s.*, s.discovery_tokens
FROM session_summaries s
WHERE ${filterClause}
${orderClause}
LIMIT ? OFFSET ?
`;
// Build ORDER BY
const orderClause = orderBy === 'relevance'
? 'ORDER BY session_summaries_fts.rank ASC'
: orderBy === 'date_asc'
? 'ORDER BY s.created_at_epoch ASC'
: 'ORDER BY s.created_at_epoch DESC';
// Main query with FTS5
const sql = `
SELECT
s.*,
s.discovery_tokens,
session_summaries_fts.rank as rank
FROM session_summaries s
JOIN session_summaries_fts ON s.id = session_summaries_fts.rowid
WHERE session_summaries_fts MATCH ?
${adjustedWhereClause}
${orderClause}
LIMIT ? OFFSET ?
`;
params.push(limit, offset);
const results = this.db.prepare(sql).all(...params) as SessionSummarySearchResult[];
// Normalize rank to score
if (results.length > 0) {
const minRank = Math.min(...results.map(r => r.rank || 0));
const maxRank = Math.max(...results.map(r => r.rank || 0));
const range = maxRank - minRank || 1;
results.forEach(r => {
if (r.rank !== undefined) {
r.score = 1 - ((r.rank - minRank) / range);
}
});
params.push(limit, offset);
return this.db.prepare(sql).all(...params) as SessionSummarySearchResult[];
}
return results;
// Vector search with query text should be handled by ChromaDB
// This method only supports filter-only queries (query=undefined)
console.warn('[SessionSearch] Text search not supported - use ChromaDB for vector search');
return [];
}
/**
@@ -485,16 +441,13 @@ export class SessionSearch {
}
/**
* Search user prompts with full-text search
* Search user prompts using filter-only direct SQLite query.
* Vector search is handled by ChromaDB - this only supports filtering without query text.
*/
searchUserPrompts(query: string, options: SearchOptions = {}): UserPromptSearchResult[] {
searchUserPrompts(query: string | undefined, options: SearchOptions = {}): UserPromptSearchResult[] {
const params: any[] = [];
const { limit = 20, offset = 0, orderBy = 'relevance', ...filters } = options;
// Build FTS5 match query
const ftsQuery = this.escapeFTS5(query);
params.push(ftsQuery);
// Build filter conditions (join with sdk_sessions for project filtering)
const baseConditions: string[] = [];
if (filters.project) {
@@ -516,47 +469,34 @@ export class SessionSearch {
}
}
const whereClause = baseConditions.length > 0 ? `AND ${baseConditions.join(' AND ')}` : '';
// FILTER-ONLY PATH: When no query text, query user_prompts table directly
if (!query) {
if (baseConditions.length === 0) {
throw new Error('Either query or filters required for search');
}
// Build ORDER BY
const orderClause = orderBy === 'relevance'
? 'ORDER BY user_prompts_fts.rank ASC'
: orderBy === 'date_asc'
? 'ORDER BY up.created_at_epoch ASC'
: 'ORDER BY up.created_at_epoch DESC';
const whereClause = `WHERE ${baseConditions.join(' AND ')}`;
const orderClause = orderBy === 'date_asc'
? 'ORDER BY up.created_at_epoch ASC'
: 'ORDER BY up.created_at_epoch DESC';
// Main query with FTS5 (join sdk_sessions for project filtering)
const sql = `
SELECT
up.*,
user_prompts_fts.rank as rank
FROM user_prompts up
JOIN user_prompts_fts ON up.id = user_prompts_fts.rowid
JOIN sdk_sessions s ON up.claude_session_id = s.claude_session_id
WHERE user_prompts_fts MATCH ?
${whereClause}
${orderClause}
LIMIT ? OFFSET ?
`;
const sql = `
SELECT up.*
FROM user_prompts up
JOIN sdk_sessions s ON up.claude_session_id = s.claude_session_id
${whereClause}
${orderClause}
LIMIT ? OFFSET ?
`;
params.push(limit, offset);
const results = this.db.prepare(sql).all(...params) as UserPromptSearchResult[];
// Normalize rank to score
if (results.length > 0) {
const minRank = Math.min(...results.map(r => r.rank || 0));
const maxRank = Math.max(...results.map(r => r.rank || 0));
const range = maxRank - minRank || 1;
results.forEach(r => {
if (r.rank !== undefined) {
r.score = 1 - ((r.rank - minRank) / range);
}
});
params.push(limit, offset);
return this.db.prepare(sql).all(...params) as UserPromptSearchResult[];
}
return results;
// Vector search with query text should be handled by ChromaDB
// This method only supports filter-only queries (query=undefined)
console.warn('[SessionSearch] Text search not supported - use ChromaDB for vector search');
return [];
}
/**
+191 -2
View File
@@ -155,6 +155,12 @@ export class WorkerService {
this.app.get('/api/observations', this.handleGetObservations.bind(this));
this.app.get('/api/summaries', this.handleGetSummaries.bind(this));
this.app.get('/api/prompts', this.handleGetPrompts.bind(this));
// Fetch by ID
this.app.get('/api/observation/:id', this.handleGetObservationById.bind(this));
this.app.get('/api/session/:id', this.handleGetSessionById.bind(this));
this.app.get('/api/prompt/:id', this.handleGetPromptById.bind(this));
this.app.get('/api/stats', this.handleGetStats.bind(this));
this.app.get('/api/processing-status', this.handleGetProcessingStatus.bind(this));
this.app.post('/api/processing', this.handleSetProcessing.bind(this));
@@ -168,6 +174,14 @@ export class WorkerService {
this.app.post('/api/mcp/toggle', this.handleToggleMcp.bind(this));
// Search API endpoints (for skill-based search)
// Unified endpoints (new consolidated API)
this.app.get('/api/search', this.handleUnifiedSearch.bind(this));
this.app.get('/api/timeline', this.handleUnifiedTimeline.bind(this));
this.app.get('/api/decisions', this.handleDecisions.bind(this));
this.app.get('/api/changes', this.handleChanges.bind(this));
this.app.get('/api/how-it-works', this.handleHowItWorks.bind(this));
// Backward compatibility endpoints (use /api/search with type param instead)
this.app.get('/api/search/observations', this.handleSearchObservations.bind(this));
this.app.get('/api/search/sessions', this.handleSearchSessions.bind(this));
this.app.get('/api/search/prompts', this.handleSearchPrompts.bind(this));
@@ -223,7 +237,7 @@ export class WorkerService {
await this.dbManager.initialize();
// Connect to MCP search server
const searchServerPath = path.join(__dirname, '..', '..', 'plugin', 'scripts', 'search-server.mjs');
const searchServerPath = path.join(__dirname, '..', '..', 'plugin', 'scripts', 'search-server.cjs');
const transport = new StdioClientTransport({
command: 'node',
args: [searchServerPath],
@@ -659,6 +673,87 @@ export class WorkerService {
}
}
/**
* Get observation by ID
* GET /api/observation/:id
*/
private handleGetObservationById(req: Request, res: Response): void {
try {
const id = parseInt(req.params.id, 10);
if (isNaN(id)) {
res.status(400).json({ error: 'Invalid observation ID' });
return;
}
const store = this.dbManager.getSessionStore();
const observation = store.getObservationById(id);
if (!observation) {
res.status(404).json({ error: `Observation #${id} not found` });
return;
}
res.json(observation);
} catch (error) {
logger.failure('WORKER', 'Get observation by ID failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
/**
* Get session by ID
* GET /api/session/:id
*/
private handleGetSessionById(req: Request, res: Response): void {
try {
const id = parseInt(req.params.id, 10);
if (isNaN(id)) {
res.status(400).json({ error: 'Invalid session ID' });
return;
}
const store = this.dbManager.getSessionStore();
const sessions = store.getSessionSummariesByIds([id]);
if (sessions.length === 0) {
res.status(404).json({ error: `Session #${id} not found` });
return;
}
res.json(sessions[0]);
} catch (error) {
logger.failure('WORKER', 'Get session by ID failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
/**
* Get user prompt by ID
* GET /api/prompt/:id
*/
private handleGetPromptById(req: Request, res: Response): void {
try {
const id = parseInt(req.params.id, 10);
if (isNaN(id)) {
res.status(400).json({ error: 'Invalid prompt ID' });
return;
}
const store = this.dbManager.getSessionStore();
const prompts = store.getUserPromptsByIds([id]);
if (prompts.length === 0) {
res.status(404).json({ error: `Prompt #${id} not found` });
return;
}
res.json(prompts[0]);
} catch (error) {
logger.failure('WORKER', 'Get prompt by ID failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
/**
* Get database statistics (with worker metadata)
*/
@@ -944,8 +1039,102 @@ export class WorkerService {
// Search API Handlers (for skill-based search)
// ============================================================================
// ============================================================================
// Unified Search API Handlers (New Consolidated API)
// ============================================================================
/**
* Search observations
* Unified search across all memory types (observations, sessions, prompts)
* GET /api/search?query=...&format=index&limit=20
*/
private async handleUnifiedSearch(req: Request, res: Response): Promise<void> {
try {
const result = await this.mcpClient.callTool({
name: 'search',
arguments: req.query
});
res.json(result.content);
} catch (error) {
logger.failure('WORKER', 'Unified search failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
/**
* Unified timeline (anchor or query-based)
* GET /api/timeline?anchor=123 OR GET /api/timeline?query=...
*/
private async handleUnifiedTimeline(req: Request, res: Response): Promise<void> {
try {
const result = await this.mcpClient.callTool({
name: 'timeline',
arguments: req.query
});
res.json(result.content);
} catch (error) {
logger.failure('WORKER', 'Unified timeline failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
/**
* Semantic shortcut for finding decision observations
* GET /api/decisions?format=index&limit=20
*/
private async handleDecisions(req: Request, res: Response): Promise<void> {
try {
const result = await this.mcpClient.callTool({
name: 'decisions',
arguments: req.query
});
res.json(result.content);
} catch (error) {
logger.failure('WORKER', 'Decisions search failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
/**
* Semantic shortcut for finding change-related observations
* GET /api/changes?format=index&limit=20
*/
private async handleChanges(req: Request, res: Response): Promise<void> {
try {
const result = await this.mcpClient.callTool({
name: 'changes',
arguments: req.query
});
res.json(result.content);
} catch (error) {
logger.failure('WORKER', 'Changes search failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
/**
* Semantic shortcut for finding "how it works" explanations
* GET /api/how-it-works?format=index&limit=20
*/
private async handleHowItWorks(req: Request, res: Response): Promise<void> {
try {
const result = await this.mcpClient.callTool({
name: 'how_it_works',
arguments: req.query
});
res.json(result.content);
} catch (error) {
logger.failure('WORKER', 'How it works search failed', {}, error as Error);
res.status(500).json({ error: (error as Error).message });
}
}
// ============================================================================
// Backward Compatibility API Handlers
// All functionality available via /api/search with type/obs_type/concepts/files params
// ============================================================================
/**
* Search observations (use /api/search?type=observations instead)
* GET /api/search/observations?query=...&format=index&limit=20&project=...
*/
private async handleSearchObservations(req: Request, res: Response): Promise<void> {