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Code Issues 3 Packages Projects Releases 10 Wiki Activity

docs: remove handover doc

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David Kaya
2026-03-24 19:44:49 +01:00
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# Rich run timeline handover
This change implements the backend half of the `Rich run timeline` roadmap item and leaves the actual timeline UI/UX for the next agent.
## What is done
- Persisted structured run history on every `SessionRecord`
- Added a shared run/timeline domain model for durable per-run metadata and ordered timeline events
- Started a new run record whenever `sendSessionMessage(...)` kicks off a turn
- Grouped streamed assistant output into a single timeline message event keyed by `messageId`
- Persisted timeline updates during agent activity, message streaming, completion, and failure
- Added explicit handoff source metadata so the future UI can draw source/target handoff edges
- Added a live `run-updated` session event so the renderer can receive timeline changes incrementally without waiting for a full workspace refresh
- Kept duplicate-session behavior simple and safe: duplicated sessions copy transcript/tooling config but start with `runs: []`
## Important files
- `src/shared/domain/runTimeline.ts`
- New shared types and helpers:
- `SessionRunRecord`
- `RunTimelineEventRecord`
- `createSessionRunRecord(...)`
- `appendRunActivityEvent(...)`
- `upsertRunMessageEvent(...)`
- `completeSessionRunRecord(...)`
- `failSessionRunRecord(...)`
- `src/shared/domain/session.ts`
- `SessionRecord` now includes `runs: SessionRunRecord[]`
- `src/main/persistence/workspaceRepository.ts`
- Normalizes persisted `session.runs`
- `src/main/EryxAppService.ts`
- Creates and updates run records during turn execution
- Emits live `run-updated` session events
- `src/shared/domain/event.ts`
- Added session event kind `run-updated`
- Added optional `run` payload on `SessionEventRecord`
- `src/renderer/lib/sessionWorkspace.ts`
- Applies `run-updated` events by replacing/inserting the full run snapshot
- `src/shared/contracts/sidecar.ts`
- `AgentActivityEvent` now carries optional `sourceAgentId` / `sourceAgentName`
- `sidecar/src/Eryx.AgentHost/Contracts/ProtocolModels.cs`
- C# DTO mirror for the new handoff source fields
- `sidecar/src/Eryx.AgentHost/Services/CopilotWorkflowRunner.cs`
- Handoff activity now includes the active/source agent when available
## Backend contract
### Session shape
Every session now has:
```ts
runs: SessionRunRecord[]
```
Runs are stored newest-first.
### `SessionRunRecord`
Key fields:
- `id`
- `requestId`
- `projectId`
- `projectPath`
- `workspaceKind`
- `patternId`
- `patternName`
- `patternMode`
- `triggerMessageId`
- `startedAt`
- `completedAt?`
- `status`
- `agents`
- `events`
`agents` is the per-run lane metadata the UI should use for lane headers / agent grouping.
### `RunTimelineEventRecord`
Event kinds:
- `run-started`
- `thinking`
- `handoff`
- `tool-call`
- `message`
- `run-completed`
- `run-failed`
Useful payload fields:
- `occurredAt`
- `updatedAt?`
- `status`
- `agentId` / `agentName`
- `sourceAgentId` / `sourceAgentName`
- `targetAgentId` / `targetAgentName`
- `toolName`
- `messageId`
- `content`
- `error`
### Live update event
The renderer now receives:
```ts
{
sessionId: string;
kind: 'run-updated';
occurredAt: string;
run: SessionRunRecord;
}
```
This is a full run snapshot, not a delta patch. The reducer already replaces/upserts the run for the selected session.
## Current runtime behavior
### Run start
`sendSessionMessage(...)` now:
1. appends the user message
2. creates a new `SessionRunRecord`
3. persists the workspace
4. starts the turn
The initial run contains a `run-started` event pointing at `triggerMessageId`.
### Thinking / handoff / tool activity
Agent activity events now append timeline entries:
- `thinking`
- `handoff`
- `tool-call`
For handoffs, the backend now stores both source and target when the source agent is known.
### Streamed assistant output
Message streaming is grouped into one `message` event per `messageId`.
During streaming:
- the existing message event is updated in place
- `status` stays `running`
- `content` holds the latest snapshot
- `updatedAt` advances
On completion:
- the same event becomes `status: 'completed'`
- final content is persisted
### Run completion / failure
Successful runs append `run-completed`.
Failed runs append `run-failed` and also mark any still-running message events as errored.
## Notes for the UI/UX agent
You do **not** need new IPC or backend endpoints for the first timeline UI pass.
Use:
- `session.runs` for initial render / reload
- live `run-updated` session events for in-flight changes
Suggested UI plan:
1. Replace or reframe the current agent-activity tiles around the run model instead of mixing unrelated tiles together.
2. Show runs newest-first in the side panel.
3. Inside a run, render a vertical timeline ordered by `events[]`.
4. Use `agents[]` to build per-agent lanes or grouped headers.
5. Render `message` events as the coherent answer step for streamed assistant output.
6. Use `messageId` and `triggerMessageId` for jump-to-message actions.
7. Use `agentId`, `sourceAgentId`, and `targetAgentId` for jump-to-agent / handoff visuals.
## UX-specific suggestions
- `run-started`: compact start card linked to the triggering user message
- `thinking`: lightweight state card or inline badge in the agent lane
- `handoff`: directional edge/card from source -> target
- `tool-call`: small tool chip/card with tool name and agent
- `message`: the main rich output card; this is the item that should expand/collapse cleanly
- `run-completed` / `run-failed`: footer-style terminal state card
## Known limitations / open questions
- There is no dedicated persisted `completed` activity event. Final assistant output plus `run-completed` is the canonical completion signal for now.
- Tool results are not persisted yet; only tool invocation metadata is stored.
- Pattern version metadata is not persisted yet; only `patternId`, `patternName`, and `patternMode` are captured.
- Duplicate sessions intentionally start with empty run history. If product wants copied traces later, that needs an explicit decision.
- Live `run-updated` events currently send the full run snapshot each time. That keeps the reducer simple; optimize later only if payload size becomes a problem.
## Frontend implementation (completed)
The UI has been implemented with the following files:
- `src/renderer/lib/runTimelineFormatting.ts` — formatting helpers for timestamps, durations, event labels, and a thinking-event collapsing algorithm
- `src/renderer/components/RunTimeline.tsx` — the main timeline UI component with collapsible run cards, vertical timeline connector lines, event icons, and jump-to-message support
- `src/renderer/components/ActivityPanel.tsx` — updated to include a Timeline section between Agents and Tools
- `src/renderer/App.tsx` — wired `onJumpToMessage` callback that scrolls to the target message with a temporary highlight ring
- `src/renderer/components/ChatPane.tsx` — added `data-message-id` attributes on message elements for DOM-based scroll targeting
- `tests/renderer/runTimelineFormatting.test.ts` — unit tests for all formatting helpers
### UI features
- **Collapsible run cards** — newest first, auto-expanded for the latest run, with pattern name and live status badge
- **Vertical timeline** — ordered event list with connector lines and per-kind icons (Brain for thinking, ArrowRight for handoff, Wrench for tool-call, MessageSquare for message, etc.)
- **Thinking collapse** — consecutive thinking events from the same agent are collapsed into a single "×N" row
- **Message preview** — message events show a truncated content preview
- **Jump to message** — clicking a message or run-started event scrolls the ChatPane to the corresponding message with a brief indigo highlight ring
- **Agent badges** — multi-agent runs show agent lane badges at the top of the expanded timeline
- **Duration footer** — completed runs show total wall-clock duration
- **Status animations** — running events pulse, completed events show green checks, failed events show red alerts
## Validation completed
- `bun run typecheck`
- `bun test` (81 tests, 0 failures)
- `bun run sidecar:test` (55 tests, 0 failures)
- `bun run build`