documentation update

docs/reference/API-routes.md

@@ -205,6 +205,9 @@ Returns `503` if llama-server is unreachable.
 | `scoreThreshold` | float | 0–1 | Minimum similarity score for Qdrant results |
 | `semanticWeight` | float | 0–5 | RRF weight for Qdrant semantic results |
 | `keywordWeight` | float | 0–5 | RRF weight for FTS5 keyword results (`0` = disabled) |
+| `contextBudget` | integer | — | Token budget for context assembly (char/4 estimation) |
+| `entityWeight` | float | — | Scoring bonus for entity-linked episodes in the context pool |
+| `minRecentEpisodes` | integer | — | Guaranteed floor of recent episodes always included in context |
 | `modelsFolderPath` | string | — | Path to folder containing .gguf files |
 | `temperature` | float | 0–2 | Inference randomness |
 | `repeatPenalty` | float | 1–2 | Repeat token penalty |
@@ -253,6 +256,7 @@ orchestration.
 | GET | /sessions/by-external/:externalId | Get session by external ID |
 | PATCH | /sessions/by-external/:externalId | Update session fields |
 | DELETE | /sessions/by-external/:externalId | Delete session (cascades to episodes) |
+| GET | /sessions/:id/entity-ids | Entity IDs linked to this session's episodes (non-project memory isolation scoping) |
 
 > Route ordering: `by-external/:externalId` must be defined before `/:id`
 > to prevent `by-external` being captured as an ID param.
@@ -279,6 +283,8 @@ Both fields are optional. Only provided fields are updated.
 | GET | /sessions/:id/episodes?limit=&offset= | Paginated episodes for a session |
 | GET | /sessions/:id/episode-stats | Aggregate: count, total tokens, max id (summarization threshold check) |
 | GET | /sessions/:id/episodes/since/:afterId | Episodes newer than :afterId, chronological (un-summarized tail) |
+| POST | /episodes/touch | Batch access-tracking bump — increments `access_count`, sets `last_accessed_at` |
+| GET | /sessions/:id/consolidation-candidates | Dry-run consolidation scoring (aging score, floors applied) |
 | DELETE | /episodes/:id | Delete episode (SQLite + Qdrant cleanup) |
 
 > Route ordering: `/episodes/search` must be defined before `/episodes/:id`.
@@ -293,6 +299,21 @@ Both fields are optional. Only provided fields are updated.
 }
 ```
 
+**POST /episodes/touch — body:**
+```json
+{ "ids": [54, 55, 56] }
+```
+Returns `{ "touched": 3 }`. Called fire-and-forget by orchestration after
+budget selection. Nonexistent IDs are silently skipped; `touched` echoes the
+request count, not rows matched.
+
+**GET /sessions/:id/consolidation-candidates** — returns
+`{ eligible, reason?, candidates: [...] }` where each candidate is
+`{ id, access_count, created_at, last_accessed_at, preview, aging_score }`,
+sorted by `aging_score` ascending (most eligible first). Sessions under
+`CONSOLIDATION.MIN_SESSION_EPISODES` return `eligible: false` with a `reason`.
+Observe-only — nothing is modified.
+
 ### Projects
 
 | Method | Path | Description |

docs/reference/testing.md

@@ -18,6 +18,7 @@ npm test          # = node --test  (discovers test/*.test.js at the repo root)
 | `test/summarization.test.js` | Summarization decision logic | `maybeSummarize` (orchestration) |
 | `test/entity-extraction.test.js` | Greeting + regurgitation guards | `mentionedIn`, `isIgnoredName` (memory-service) |
 | `test/schema.test.js` | Fresh-DB schema completeness | `schema.js` string (memory-service) |
+| `test/trivial-turn.test.js` | Greeting/trivial-turn detection | `isTrivialTurn` (shared) |
 | `test/migrations.test.js` | Migration version-stepping | `migrate` (memory-service) |
 
 Tests import the **real** functions rather than reimplementing logic — the
@@ -44,3 +45,10 @@ Keep the pattern: export the real function, import it, mock I/O at the boundary
 logic (ranking, tokenizing, version-stepping, decision branches) over wiring.
 Several of these tests were written *after* a bug slipped through — each new
 class of mistake is worth a case so it can't recur silently.
+
+When a mocked service call changes shape (e.g. the `utilityInference` refactor
+moving summarization from Ollama's `/api/generate` to the inference service's
+`/utility/complete`), the mock URL router must move with it — an "unexpected
+fetch" throw in these tests usually means the code under test evolved, not
+broke. Runner-contract tests (migrations) inject stub no-op migration arrays
+rather than letting the real SQL-bearing migrations hit the minimal fake db.

docs/roadmap.md

@@ -74,8 +74,9 @@ Multi-strategy retrieval merged into a single ranked result set.
 
 ### 3. Memory Consolidation Lifecycle
 Prevents long-term memory degradation and enables compression.
-- [ ] Episode aging — score/weight episodes by recency and access frequency
-- [ ] Consolidation pass — merge related low-weight episodes into summary nodes
+- [x] Episode aging — `access_count` + `last_accessed_at` columns (v2 migration), batch touch on retrieval selection (`POST /episodes/touch`), aging score `access_count / (1 + days since last access)`
+- [x] Dry-run candidates endpoint — `GET /sessions/:id/consolidation-candidates` with age + session-size floors (observe-only phase before destructive pass)
+- [ ] Consolidation pass — merge related low-weight episodes into summary nodes (incl. Qdrant vector + entity link cleanup)
 - [ ] Orphan cleanup — remove entities no longer referenced by active episodes
 
 ### 4. User Preference Model
@@ -90,11 +91,11 @@ Short-circuit simple requests before they reach the LLM.
 - [ ] Confidence bands — FAST PATH (memory lookup only) vs FULL (LLM + context)
 - [ ] Fast-path handlers — direct memory queries, session lookups, factual recalls
 
-### 6. Smarter Context Assembly *(inspired by acid2lake)*
+### 6. Smarter Context Assembly *(inspired by acid2lake)* ✅
 Budget-aware context selection instead of dumping all relevant memory into the prompt.
-- [ ] Token budget manager in orchestration
-- [ ] Priority scoring — recency × relevance × entity weight
-- [ ] Configurable context budget via env var
+- [x] Token budget manager in orchestration (`selectWithinBudget`, char/4 estimation on stored text)
+- [x] Priority scoring — RRF fusion + recency + entity boost (`buildScoredPool`)
+- [x] Configurable via settings (`contextBudget`, `entityWeight`, `minRecentEpisodes`) — live, no restart
 
 ### 7. Procedural Memory Store *(inspired by acid2lake)*
 Learns "how NexusAI has successfully handled this type of request before."
@@ -227,4 +228,4 @@ The JARVIS moment — NexusAI reasons, plans, and acts across multiple steps.
 
 ---
 
-*Last updated: April 2026*
+*Last updated: August 2026*

docs/services/memory-service.md

@@ -78,6 +78,11 @@ does **not** reconcile columns on old tables — that's what migrations are for)
 ```js
 const migrations = [
   (_db) => {},   // v0 → v1: consolidated baseline (historical ALTERs folded into schema.js)
+  (db) => {      // v1 → v2: access tracking for consolidation lifecycle
+    db.exec(`ALTER TABLE episodes ADD COLUMN last_accessed_at INTEGER`);
+    db.exec(`ALTER TABLE episodes ADD COLUMN access_count INTEGER NOT NULL DEFAULT 0`);
+    db.exec(`UPDATE episodes SET last_accessed_at = created_at`);  // backfill
+  },
 ];
 const LATEST_VERSION = migrations.length;  // derived, never hand-maintained
 ```
@@ -121,6 +126,12 @@ previously ran on every startup.
 - `foreign_keys = ON` — enforces referential integrity and cascade deletes
 - PRAGMAs set via `db.pragma()`, not `db.exec()`
 
+> **Copying a live WAL database:** `cp` on the `.db` file alone silently loses
+> everything in the un-checkpointed `-wal` file (recent writes, even the
+> migration version stamp). Always use
+> `sqlite3 nexusai.db "VACUUM INTO './copy.db'"` (or `.backup`) — safe while
+> the service is running, produces a complete single-file snapshot.
+
 ### Dynamic Updates
 
 Both `updateSession` and `updateProject` build their `SET` clause dynamically
@@ -204,6 +215,28 @@ service is responsible only for CRUD — generation logic lives in orchestration
 > For full details on trigger conditions, prompt format, cumulative updates,
 > and ChatML token stripping, see `summarization.md`.
 
+## Access Tracking & Consolidation (dry-run)
+
+Every episode selected into a chat context window (budget-selected, not the
+guaranteed-recency floor) gets an access bump via `POST /episodes/touch` —
+`access_count` incremented, `last_accessed_at` set to `Date.now()` (ms).
+Called fire-and-forget from orchestration; a failure loses one increment,
+nothing more.
+
+`GET /sessions/:id/consolidation-candidates` scores episodes by
+`access_count / (1 + days since last access)` — never-accessed episodes fall
+back to `created_at` for the recency term and score exactly 0 (most eligible).
+Two floors apply: episodes younger than `CONSOLIDATION.MIN_AGE_DAYS` are
+excluded in SQL; sessions under `CONSOLIDATION.MIN_SESSION_EPISODES` return
+`eligible: false` before scoring runs. The endpoint is observe-only — the
+destructive pass (merge → summarize → Qdrant cleanup → orphan sweep) is not
+yet built.
+
+> **Unit note:** `created_at` is unix **seconds** (`unixepoch()`);
+> `last_accessed_at` is unix **milliseconds** (`Date.now()`). The scoring
+> query normalizes with `created_at * 1000`. Keep this in mind for any new
+> queries touching both columns.
+
 ## Delete Behaviour (SQLite + Qdrant consistency)
 
 SQLite cascades handle relational cleanup, but Qdrant is a separate store and

docs/services/orchestration-service.md

@@ -73,6 +73,9 @@ via `appSettings.load()` — changes apply immediately without a service restart
 | `scoreThreshold` | 0.5 | Minimum similarity score for Qdrant semantic results |
 | `semanticWeight` | 1.0 | RRF weight for Qdrant semantic results |
 | `keywordWeight` | 0 | RRF weight for FTS5 keyword results (`0` = disabled) |
+| `contextBudget` | — | Token budget for context assembly (char/4 estimation on stored text) |
+| `entityWeight` | — | Scoring bonus for entity-linked episodes in the context pool |
+| `minRecentEpisodes` | — | Guaranteed floor of recent episodes always included in context |
 | `modelsFolderPath` | `/mnt/nexus-models` | Path to folder containing .gguf files |
 | `temperature` | 0.7 | Inference temperature |
 | `repeatPenalty` | 1.1 | Repeat token penalty |
@@ -101,35 +104,43 @@ difference is how the inference response is delivered to the client.
 
 4. **Recent episode retrieval** — fetch most recent episodes (`recentEpisodeLimit`).
 
-5. **Fused episode retrieval** — runs semantic (Qdrant) and keyword (FTS5)
+5. **Trivial-turn gate** — greetings/pleasantries (`isTrivialTurn`) skip all
+   retrieval (semantic, keyword, entity); recent history alone is the context.
+   Breaks the greeting → marginal-retrieval → confabulation loop.
+
+6. **Fused episode retrieval** — runs semantic (Qdrant) and keyword (FTS5)
    search in parallel, then merges results via Reciprocal Rank Fusion (RRF).
-   Both paths are filtered against `recentIds` before fusion. FTS is scoped
-   to the current session or all project sessions. If `keywordWeight` is `0`,
-   the FTS call is skipped entirely. Non-critical — failures fall back to
-   whichever strategy succeeded.
+   The query is embedded once and shared with entity search. Both paths are
+   filtered against `recentIds` before fusion. FTS is scoped to the current
+   session or all project sessions. If `keywordWeight` is `0`, the FTS call
+   is skipped entirely. Non-critical — failures fall back to whichever
+   strategy succeeded.
 
-6. **Entity search** — query `entities` Qdrant collection filtered by
-   `projectId`. Returns entity IDs alongside Qdrant payload data (the Qdrant
-   point ID equals the SQLite entity ID). Non-critical.
+7. **Entity search + graph expansion** — query `entities` Qdrant collection
+   (project-scoped, or session-scoped via `/sessions/:id/entity-ids` for
+   non-project chats). Entity IDs are expanded into a 1-hop subgraph via
+   `POST /graph/neighbors`; on failure, falls back to flat entity list.
+   Non-critical.
 
-7. **Graph neighborhood expansion** — call `POST /graph/neighbors` on
-   memory-service with the entity IDs from step 6. Returns a 1-hop subgraph
-   `{ nodes, edges }` — entity objects plus the relationships connecting them.
-   If no entities were found or the graph call fails, falls back to flat entity
-   list (no edges). Non-critical.
+8. **Scored pool + budget selection** — `buildScoredPool` combines RRF scores,
+   recency, and entity-linkage bonus; `selectWithinBudget` fills `contextBudget`
+   (char/4 token estimation on stored text) above a guaranteed floor of
+   `minRecentEpisodes` recent episodes. Selected episode IDs are then reported
+   to `POST /episodes/touch` fire-and-forget (access tracking for the
+   consolidation lifecycle).
 
-8. **Prompt assembly** — combine system prompt, graph context, fused episodes,
-   recent episodes, and user message.
+9. **Prompt assembly** — combine system prompt, graph context, selected
+   episodes, guaranteed recent episodes, and user message.
 
-9. **Inference** — send to inference service. `/chat` awaits full response;
-   `/chat/stream` pipes SSE chunks to the client.
+10. **Inference** — send to inference service. `/chat` awaits full response;
+    `/chat/stream` pipes SSE chunks to the client.
 
-10. **Episode write** — write exchange back to memory with `projectId`.
+11. **Episode write** — write exchange back to memory with `projectId`.
 
-11. **Summarisation trigger** — `triggerSummary(session, allEpisodes)` called
+12. **Summarisation trigger** — `triggerSummary(session)` called
     fire-and-forget. See `summarization.md` for full details.
 
-12. **Auto-naming** — on first message with no session name, fires a secondary
+13. **Auto-naming** — on first message with no session name, fires a secondary
     inference call (max 20 tokens, temperature 0.3) to generate a session name.
 
 ### Prompt Structure

docs/services/shared.md

@@ -203,6 +203,16 @@ SUMMARY_MAX_TOKENS=800
 SUMMARY_MIN_EPISODES=5
 ```
 
+#### `CONSOLIDATION`
+
+Controls the memory consolidation lifecycle (currently dry-run only).
+
+| Key | Value | Description |
+|---|---|---|
+| `MIN_AGE_DAYS` | `7` | Episodes younger than this are never consolidation candidates |
+| `MIN_SESSION_EPISODES` | `20` | Sessions with fewer episodes are skipped entirely |
+| `CANDIDATE_LIMIT` | `50` | Max candidates returned per scoring query |
+
 #### `SQLITE`
 
 | Key | Value | Description |

packages/memory-service/src/episodic/index.js

@@ -1,5 +1,5 @@
 const {getDB} = require('../db');
-const { EPISODIC, getEnv, SERVICES, parseRow, formatEpisodeText, SUMMARIES, logger, isTrivialTurn } = require('@nexusai/shared');
+const { EPISODIC, getEnv, SERVICES, parseRow, formatEpisodeText, SUMMARIES, logger, isTrivialTurn, CONSOLIDATION } = require('@nexusai/shared');
 const semantic = require('../semantic');
 const { extractAndStoreEntities } = require('../entities/extraction')
 
@@ -266,6 +266,19 @@ function deleteEpisode(id) {
   db.prepare(`DELETE FROM episodes WHERE id = ?`).run(id);
 }
 
+function touchEpisodes(ids) {
+  if (!ids.length) return;
+
+  const db = getDB();   // <-- missing in your version
+  const placeholders = ids.map(() => '?').join(',');
+  db.prepare(`
+    UPDATE episodes
+    SET access_count = access_count + 1,
+        last_accessed_at = ?
+    WHERE id IN (${placeholders})
+    `).run(Date.now(), ...ids);
+}
+
 /******** Embedding Helper ********/
 async function getEpisodeEmbedding(userMessage, aiResponse){
   const url = getEnv('EMBEDDING_SERVICE_URL', SERVICES.EMBEDDING_URL);
@@ -298,6 +311,22 @@ function getEpisodesByProject(projectId, limit = SUMMARIES.MAX_PROJECT_EPISODE_L
     `).all(projectId, limit).map(parseRow);
 }
 
+function getConsolidationCandidates(sessionId, limit = CONSOLIDATION.CANDIDATE_LIMIT) {
+    const db = getDB();
+    const now = Date.now();
+    const cutoff = Math.floor(now / 1000) - CONSOLIDATION.MIN_AGE_DAYS *86400 // seconds, so it matches created_at
+
+    return db.prepare(`
+        SELECT id, access_count, created_at, last_accessed_at,
+              SUBSTR(user_message, 1, 80) AS preview,
+              CAST( access_count AS REAL) / (1+(?-COALESCE(last_accessed_at, created_at * 1000)) / 86400000.0) AS aging_score
+              FROM episodes
+              WHERE session_id = ? AND created_at < ?
+              ORDER BY aging_score ASC
+              LIMIT ?
+      `).all(now, sessionId, cutoff, limit);
+}
+
 module.exports = {
   createSession,
   getSession,
@@ -315,6 +344,8 @@ module.exports = {
   getEpisodesSince,
   searchEpisodes,
   deleteEpisode,
+  touchEpisodes,
   getEpisodesByProject,
   buildFtsQuery,
+  getConsolidationCandidates,
 };

packages/memory-service/src/index.js

@@ -1,6 +1,6 @@
 require ('dotenv').config();
 const express = require('express');
-const {getEnv, PORTS, EPISODIC, logger} = require('@nexusai/shared');
+const {getEnv, PORTS, EPISODIC, logger, CONSOLIDATION} = require('@nexusai/shared');
 const { getDB } = require('./db');
 const { createProject, getProjects, getProject, updateProject, deleteProject } = require('./db/projects');
 const { createSummary, getSummary, getSummariesBySession, getSummariesByProject, updateSummary, deleteSummary } = require('./db/summaries');
@@ -139,6 +139,13 @@ app.get('/episodes/search', (req, res) => {
   res.json(episodic.searchEpisodes(q, Number(limit), parsedSessionIds));
 });
 
+app.post('/episodes/touch', (req, res) => {
+  const { ids } = req.body;
+  if(!Array.isArray(ids)) return res.status(400).json({error: 'ids must be an array'});
+  episodic.touchEpisodes(ids);
+  res.json({touched: ids.length});
+})
+
 app.get('/episodes/:id', (req, res) => {
   const episode = episodic.getEpisode(req.params.id);
   if (!episode) return res.status(404).json({ error: 'Episode not found' });
@@ -175,6 +182,26 @@ app.get('/sessions/:id/episodes/since/:afterId', (req, res) => {
   res.json(episodes);
 });
 
+app.get('/sessions/:id/consolidation-candidates', (req, res) => {
+  const sessionId = Number(req.params.id);
+  const stats = episodic.getSessionEpisodeStats(sessionId);
+
+  if(stats.count < CONSOLIDATION.MIN_SESSION_EPISODES) {
+    return res.json({
+      eligible: false,
+      reason: `session has ${stats.count} episodes, floor is ${CONSOLIDATION.MIN_SESSION_EPISODES}`,
+      candidates: [],
+    });
+  }
+
+  const candidates = episodic.getConsolidationCandidates(sessionId);
+  res.json({
+    eligible:true, 
+    sessionEpisodeCount: stats.count,
+    candidates
+  })
+})
+
 app.delete('/episodes/:id', (req, res) => {
   const id = Number(req.params.id);
   episodic.deleteEpisode(id);

packages/orchestration-service/src/chat/index.js

@@ -331,6 +331,9 @@ async function assembleContext(externalId, userMessage) {
     const scoredPool = buildScoredPool(fusedWithScores, recentEpisodes, entityBoostedIds, { entityWeight });
     const { guaranteed, selected } = selectWithinBudget(scoredPool, contextBudget, minRecentEpisodes, recentEpisodes);
 
+    const selectedIds = selected.map(ep => ep.id);
+    memory.touchEpisodes(selectedIds);
+
     // 7. Graph neighborhood expansion
     let neighborhood = { nodes: [], edges: [] };
     if (entityIds.length > 0) {

packages/orchestration-service/src/services/memory.js

@@ -1,4 +1,4 @@
-const { getEnv, SERVICES, EPISODIC } = require('@nexusai/shared');
+const { getEnv, SERVICES, EPISODIC, logger } = require('@nexusai/shared');
 
 const BASE_URL = getEnv('MEMORY_SERVICE_URL', SERVICES.MEMORY_URL);
 
@@ -223,6 +223,16 @@ async function getEntityIdsBySession(sessionId){
     return entityIds;
 }
 
+// orchestration-service/src/services/memory.js
+async function touchEpisodes(ids) {
+    if (!ids.length) return;
+    fetch(`${BASE_URL}/episodes/touch`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ ids }),
+    }).catch(err => logger.warn(`[memory] touch failed: ${err.message}`));
+}
+
 module.exports = {
     getSessionByExternalId,
     createSession,
@@ -250,4 +260,5 @@ module.exports = {
     searchEpisodes,
     getEpisodesByEntities,
     getEntityIdsBySession,
+    touchEpisodes,
 }

packages/shared/src/config/constants.js

@@ -120,6 +120,12 @@ const UTILITY = {
     TIMEOUT_MS:    120_000,  // extraction previously used 60s; summaries had none — standardized
 };
 
+const CONSOLIDATION = {
+    MIN_AGE_DAYS:           7,  // episodes younger than this are never consolidation candidates
+    MIN_SESSION_EPISODES:   20, // sessions smaller than this are left entirely alone
+    CANDIDATE_LIMIT: 50,    
+}
+
 module.exports = {
     QDRANT,
     COLLECTIONS,
@@ -135,4 +141,5 @@ module.exports = {
     ENTITIES,
     RETRIEVAL,
     UTILITY,
+    CONSOLIDATION,
 };

packages/shared/src/index.js

@@ -13,7 +13,8 @@ const {
         SUMMARIES, 
         ENTITIES, 
         RETRIEVAL,
-        UTILITY
+        UTILITY,
+        CONSOLIDATION
      } = require('./config/constants');
 const {parseRow, formatEpisodeText, isTrivialTurn} = require('./utils')
 
@@ -40,5 +41,6 @@ module.exports = {
     logger,
     RETRIEVAL,
     UTILITY,
+    CONSOLIDATION,
     utilityInference,
 };

test/migrations.test.js

@@ -4,7 +4,6 @@
 // advance user_version correctly, and no-op when the DB is already current.
 const { test } = require('node:test');
 const assert = require('node:assert');
-const Database = require('better-sqlite3');
 const { migrate, LATEST_VERSION } = require('../packages/memory-service/src/db/migrations');
 
 // Emulates just the slice of the better-sqlite3 API that migrate() uses.
@@ -26,14 +25,16 @@ function fakeDb(startVersion = 0) {
 
 test('a fresh DB (user_version 0) is stamped to LATEST_VERSION', () => {
   const db = fakeDb(0);
-  const result = migrate(db);
+  const stubs = Array.from({ length: LATEST_VERSION }, () => () => {});
+  const result = migrate(db, stubs);   // inject no-op migrations
   assert.strictEqual(result, LATEST_VERSION);
   assert.strictEqual(db.version, LATEST_VERSION);
 });
 
 test('an already-current DB is a no-op (no version writes)', () => {
   const db = fakeDb(LATEST_VERSION);
-  const result = migrate(db);
+  const stubs = Array.from({ length: LATEST_VERSION }, () => () => {});
+  const result = migrate(db, stubs);   // fixed: db is now the first arg
   assert.strictEqual(result, LATEST_VERSION);
   assert.deepStrictEqual(db.setCalls, [], 'should not touch user_version when current');
 });

test/schema.test.js

@@ -13,7 +13,7 @@ try { ({ DatabaseSync } = require('node:sqlite')); } catch { DatabaseSync = null
 // The complete intended shape = original base tables + every historical ALTER.
 const EXPECTED = {
   sessions:        ['id','external_id','created_at','updated_at','metadata','name','project_id'],
-  episodes:        ['id','session_id','user_message','ai_response','created_at','token_count','metadata'],
+  episodes:        ['access_count', 'ai_response', 'created_at', 'id', 'last_accessed_at', 'metadata', 'session_id', 'token_count', 'user_message'],
   entities:        ['id','name','type','notes','created_at','updated_at','metadata','mention_count','confidence','source','last_seen_at'],
   relationships:   ['id','from_id','to_id','label','created_at','metadata','mention_count','notes'],
   entity_episodes: ['entity_id','episode_id'],

test/summarization.test.js

@@ -19,7 +19,7 @@ function mockMemory({ stats, summaries, since }) {
       calls.sinceAfterId = Number(u.split('/since/').at(-1));
       return json(since.filter(ep => ep.id > calls.sinceAfterId));
     }
-    if (u.includes('/api/generate')) return json({ response: 'A concise third-person summary.' });
+    if (u.endsWith('/utility/complete')) return json({ text: 'A concise third-person summary.' });
     if (u.endsWith('/summaries') && opts.method === 'POST') { calls.posted = JSON.parse(opts.body); return json({ id: 99 }); }
     if (/\/summaries\/\d+$/.test(u) && opts.method === 'PATCH') { calls.patched = JSON.parse(opts.body); return json({ ok: true }); }
     throw new Error('unexpected fetch: ' + u);