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packages/orchestration-service/CLAUDE.md
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packages/orchestration-service/CLAUDE.md
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# CLAUDE.md
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This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
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See the root [CLAUDE.md](../../CLAUDE.md) for overall architecture, service roles, and the end-to-end chat flow.
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## Running This Service
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```bash
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npm run orchestration # From repo root (node src/index.js)
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npm -w packages/orchestration-service run dev # With --watch
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```
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Default port: **4000**. Depends on memory-service, embedding-service, inference-service, and Qdrant.
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## Context Assembly (`src/chat/index.js`)
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`assembleContext(externalId, userMessage)` is the core function that builds the inference prompt. Order of operations:
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1. Resolve session by `externalId` (creates it if missing — every chat call is self-healing).
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2. If session has a `project_id`, load the project and fetch all sibling sessions (via `getProjectSessions`, hardcoded `limit=200`).
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3. Fetch `recentEpisodeLimit` recent episodes from memory-service.
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4. Embed the user message; search Qdrant EPISODES with `scoreThreshold`:
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- No project: `must: [sessionId == this session]`
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- Project: `should: [sessionId == s1, sessionId == s2, ...]` across all project sessions
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- Dedup against recent episode IDs before including.
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5. Embed and search Qdrant ENTITIES; filter by `projectId` if applicable.
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6. Build prompt in this fixed order: **system prompt → entities → semantic episodes → recent episodes → user message → "Assistant:"**
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The ordering prioritizes established facts (entities) and relevant past context (semantic) over pure recency.
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## System Prompt Resolution
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Priority from highest to lowest:
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1. `project.system_prompt` (stored on the project row in memory-service)
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2. `settings.systemPrompt` (saved in `data/settings.json`)
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3. `ORCHESTRATION.SYSTEM_PROMPT` (shared constants fallback)
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## Settings (`src/config/settings.js`)
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Settings are loaded from `data/settings.json` merged with defaults at every `GET /settings` call. `PATCH /settings` validates each field individually with specific constraints:
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| Field | Constraint |
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|---|---|
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| `recentEpisodeLimit` | integer, 1–20 |
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| `semanticLimit` | integer, 1–20 |
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| `scoreThreshold` | number, 0–1 |
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| `temperature` | number, 0–2 |
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| `repeatPenalty` | number, 1–2 |
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| `topP` | number, 0–1 |
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| `topK` | integer, 1–100 |
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| `modelsFolderPath` | path must exist and be readable |
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| `systemPrompt` | string (trimmed); `null` reverts to shared default |
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`data/settings.json` is created on first save. Parent directories are created if missing.
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## Streaming SSE (`src/chat/index.js` — `chatStream`)
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The route sets SSE headers and delegates to `chatStream`, which:
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1. Calls `inference.completeStream()` → receives a raw HTTP Response with a readable body.
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2. Reads the body in chunks, buffers across chunk boundaries, splits on `\n\n`.
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3. For each event line starting with `data: `, parses the JSON and calls `onChunk(data.response)`.
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4. The `[DONE]` sentinel (used by some llama-server versions) is explicitly ignored.
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5. After stream ends, saves the assembled full response as an episode (same as non-streaming).
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If a chunk parse fails the error is logged and the stream continues. If the response body closes with no text accumulated, the episode is not saved (logged as warning).
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## Fire-and-Forget Tasks
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After every successful chat turn:
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- **Summarization** (`services/summarization.js` → `triggerSummary`): checks token threshold → recency guard → calls Ollama → POSTs to memory-service. Only runs if `SUMMARIES.THRESHOLD_TOKENS` is exceeded AND at least `SUMMARIES.MIN_EPISODES_SINCE` new episodes have occurred since the last summary.
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- **Auto-naming** (`chat/index.js` → `autoNameSession`): only fires on the first message of a session. Uses temp 0.3, `maxTokens=20`, prompts for a ≤5-word title.
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Both tasks catch all errors and log warnings without surfacing to the client.
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## Summarization Recency Guard
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`src/services/summarization.js` reads the `episode_range` field of the latest existing summary (format: `"<startId>-<endId>"`). It counts SQLite episodes with `id > endId`; if fewer than `SUMMARIES.MIN_EPISODES_SINCE`, it skips. This prevents rapid re-summarization on high-traffic sessions.
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When the existing summary's token count exceeds `SUMMARIES.MAX_SUMMARY_TOKENS`, it is treated as "expired" — a fresh summary is generated instead of an incremental update.
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## Qdrant Calls (Direct, Not Via Memory-Service)
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`src/services/qdrant.js` makes REST calls to Qdrant directly at `QDRANT_URL`. This bypasses memory-service for semantic search performance. Orchestration fetches episode/entity content from memory-service by ID *after* getting vector search results from Qdrant.
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`searchEntities` checks `projectId !== null && projectId !== undefined` before applying the filter — a session with no project skips the filter entirely and searches globally.
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## Models Endpoint
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`GET /models` scans `modelsFolderPath` for `.gguf` files and optionally reads a `models.json` manifest (keyed by filename) for labels and descriptions. File size is reported in GB. Returns 500 if the folder is inaccessible.
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`GET /models/props` proxies `/props` from llama-server and returns `{contextWindow, modelAlias}`. Returns 503 if llama-server is unreachable.
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## Health Check
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`GET /health/services` runs parallel fetch calls to all four dependent services with a 3-second `AbortSignal.timeout` each. Results are returned as an array — the endpoint never returns a non-2xx itself regardless of downstream status.
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## Background Model (qwen2.5:3b)
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Used for entity extraction and summarization via Ollama on Mini PC 1. Uses **ChatML
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format** (`<|im_start|>` / `<|im_end|>`) — not Phi3 format. Use `format: 'json'`
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only for structured extraction, never for free-text summarization.
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## API Endpoints Quick Reference
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| Method | Path | Notes |
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|---|---|---|
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| GET | `/health` | Returns service URLs |
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| GET | `/health/services` | Parallel status of all dependencies |
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| POST | `/chat` | Blocking completion |
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| POST | `/chat/stream` | SSE streaming |
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| GET/PATCH | `/settings` | Persistent settings |
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| GET | `/models` | `.gguf` file scan |
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| GET | `/models/props` | llama-server model info |
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| GET | `/sessions` | Delegates to memory-service |
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| GET | `/sessions/:sessionId/history` | Paginated episodes by external ID |
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| PATCH | `/sessions/:sessionId` | `name` and/or `projectId` |
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| DELETE | `/sessions/:sessionId` | |
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| GET | `/episodes` | Delegates; supports `q` for FTS |
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| DELETE | `/episodes/:id` | Delegates |
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| GET/POST/PATCH/DELETE | `/projects` and `/projects/:id` | Delegates |
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| POST | `/summaries/project/:projectId/generate` | On-demand; 422 if no data |
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| GET | `/summaries/project/:projectId/overview` | |
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| GET | `/summaries/session/:sessionId` | Resolves external ID first |
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| GET | `/summaries/project/:projectId` | |
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