# Issue #17 — Audit/Activity Log View

**Status: COMPLETED**

## Overview

Timeline view of all orchestration events for a session — state transitions, tool invocations, errors. Populated from the streamed responses captured during the session.

## Implementation Steps

### 1. Audit Event Store (`src/lib/stores/audit.svelte.ts`) — COMPLETED

- Created `AuditEvent` type with `id`, `sessionId`, `timestamp`, `eventType`, `details`, `state?`
- Event types: `state_change`, `tool_invocation`, `error`, `message`
- Store events grouped by session using `SvelteMap`, persisted to `localStorage`
- Functions: `addEvent()`, `getEventsBySession()`, `getAllSessions()`, `clearSession()`
- Sample data seeded for demo sessions

### 2. AuditTimeline Component (`src/lib/components/AuditTimeline.svelte`) — COMPLETED

- Vertical timeline with left-aligned time markers and event cards
- Color-coded type badges: state change=blue, tool=green, error=red, message=gray
- Each event shows timestamp, type badge, state label (when applicable), and detail text
- Date headers when events span multiple days
- Hover shadow effect on event cards

### 3. Audit Route (`src/routes/audit/+page.svelte`) — COMPLETED

- Dedicated `/audit` route with session selector dropdown and timeline
- Filter controls for event type (all, state changes, tool invocations, errors, messages)
- URL query param `?session=id` for deep linking to specific session
- Empty states when no events or no session selected
- Header with back-to-chat link and "Sample Data" badge

### 4. Audit Route Config (`src/routes/audit/+page.ts`) — COMPLETED

- `export const prerender = false` and `export const ssr = false`

### 5. Homepage Navigation (`src/routes/+page.svelte`) — COMPLETED

- Added "Audit Log" navigation link alongside existing Chat, Lineage, Memory links

### 6. Chat Page Integration (`src/routes/chat/+page.svelte`) — COMPLETED

- Added "Audit" link in the header navigation bar
- Capture orchestration state changes during streaming into the audit store
- Capture errors into the audit store

## Files Changed

- `src/lib/stores/audit.svelte.ts` (new)
- `src/lib/components/AuditTimeline.svelte` (new)
- `src/routes/audit/+page.svelte` (new)
- `src/routes/audit/+page.ts` (new)
- `src/routes/+page.svelte` (modified)
- `src/routes/chat/+page.svelte` (modified)