# Cross-Repo TaskThread Workflow

This document is the current TaskThread workflow record across:

- `xworkmate-app`
- `xworkmate-bridge`
- `openclaw-multi-session-plugins`

It replaces older local-classification and app-side artifact fallback descriptions. The current rule is:

> The app owns TaskThread state and local sync. The bridge/OpenClaw terminal task snapshot is the truth source for final artifacts.

## Ownership

### xworkmate-app

The app owns local state and UI only:

- Resolve or create the current `TaskThread` by `sessionKey` / `threadId`.
- Ensure the local workspace at `$HOME/.xworkmate/threads/<session>`.
- Build the external `TaskThread workspace context` prompt prefix.
- Send `metadata.xworkmateTaskArtifactContract`.
- Queue OpenClaw gateway work locally when the constrained OpenClaw lane is busy.
- Apply normalized bridge results to `TaskThread.lifecycleState`.
- Sync bridge-provided artifacts into the local TaskThread workspace.

The app must not infer required final file types from user text. It must not treat partial artifacts as final deliverables.

### xworkmate-bridge

The bridge owns the public protocol boundary:

- Expose the unified `/acp/rpc` entrypoint.
- Resolve routing for agent providers and gateway/OpenClaw.
- Normalize provider/OpenClaw results into a stable result shape.
- Map app `threadId` to an explicit OpenClaw `sessionKey`; do not pass app draft keys directly to OpenClaw.
- Stream `session.update` events.
- Serve `xworkmate.tasks.get` snapshots for asynchronous recovery and terminal result lookup.
- Serve `xworkmate.tasks.cancel` for OpenClaw task cancellation.

The bridge should return standard contract fields such as `artifacts`, `artifacts.items`, `files`, or `attachments`. App-side support for ad hoc final-artifact field names is not a compatibility layer.

### openclaw-multi-session-plugins

OpenClaw plugins own execution-time artifact scope:

- Create a run.
- Allocate `runId`.
- Prepare `artifactScope = tasks/<session>/<run>`.
- Execute the user task.
- Collect OpenClaw media/tmp tool outputs into the current task artifact scope after `agent.wait`.
- Export real final deliverables into the current task artifact scope.
- Validate that artifact scope matches the current session and run.
- Return artifact refs/files to the bridge.

Text-only file claims, placeholder files, global workspace files, previous-run files, and partial/intermediate artifacts are not final deliverables.

## Main Flow

```mermaid
flowchart TD
  U["User input / follow-up"] --> UI["Assistant UI"]
  UI --> APP["AppController / TaskThread"]

  APP --> T0{"Current TaskThread exists?"}
  T0 -->|No| T1["Create draft TaskThread<br/>sessionKey / threadId"]
  T0 -->|Yes| T2["Load current TaskThread"]
  T1 --> W["Prepare local workspace<br/>$HOME/.xworkmate/threads/<session>"]
  T2 --> W

  W --> C["Build external task context<br/>TaskThread workspace context"]
  C --> M["Attach metadata<br/>xworkmateTaskArtifactContract"]

  M --> R{"Execution target"}
  R -->|Agent: codex / opencode / gemini / hermes| B1["bridge /acp/rpc<br/>session.start or session.message"]
  R -->|Gateway: OpenClaw| Q{"OpenClaw local lane idle?"}

  Q -->|Idle| B2["bridge /acp/rpc<br/>session.start or session.message"]
  Q -->|Busy| Q1["Local OpenClaw queue<br/>lifecycleStatus=queued"]
  Q1 --> Q2["drainOpenClawGatewayQueue"]
  Q2 --> B2

  B1 --> BR["xworkmate-bridge<br/>routing + protocol normalization"]
  B2 --> BR

  BR --> P{"Provider / runtime"}
  P -->|Agent provider| A["Codex / Opencode / Gemini / Hermes"]
  P -->|OpenClaw| O["OpenClaw runtime"]
  O --> OS["OpenClaw task artifact scope<br/>tasks/<session>/<run>"]

  A --> N["Bridge normalized result"]
  OS --> N

  N --> S{"Return path"}
  S -->|Final response| APP2["APP applyGatewayChatResult"]
  S -->|SSE update| SSE["APP receives session.update"]
  S -->|SSE closed / no final envelope| POLL["Transport calls xworkmate.tasks.get<br/>until terminal snapshot"]

  SSE --> H{"Running task handle?"}
  H -->|Yes| POLL
  H -->|No| APP2
  POLL --> APP2

  APP2 --> OK{"success=true and artifacts present?"}
  OK -->|Yes| SYNC["Sync artifacts to local TaskThread workspace"]
  OK -->|No, failure| FAIL["Record lastResultCode<br/>lastArtifactSyncStatus=failed"]
  OK -->|No exported artifacts guard| NOART["lastArtifactSyncStatus=no-exported-artifacts"]

  SYNC --> READY["TaskThread ready"]
  FAIL --> READY
  NOART --> READY
```

## TaskThread State Machine

`TaskThread.lifecycleState.status` is intentionally small. Most terminal outcomes return to `ready`; result detail is stored in `lastResultCode`.

```mermaid
stateDiagram-v2
  [*] --> Ready: create / restore TaskThread

  Ready --> Running: sendChatMessage
  Ready --> Queued: OpenClaw lane busy
  Queued --> Running: drainOpenClawGatewayQueue
  Queued --> Ready: abort / queue full

  Running --> Running: SSE delta / session.update
  Running --> Running: OpenClaw running handle
  Running --> Running: xworkmate.tasks.get polling

  Running --> Ready: success
  Running --> Ready: failed / artifact_missing
  Running --> Ready: ACP_HTTP_* / unrecovered SSE interruption
  Running --> Ready: xworkmate.tasks.get failure after transport recovery
  Running --> Ready: abort

  Ready --> Archived: user archives task
  Archived --> Ready: user restores task

  note right of Ready
    lifecycleStatus=ready does not mean success.
    Read lastResultCode for terminal detail:
    success / failed / aborted /
    artifact_missing / ACP_HTTP_* /
    OPENCLAW_REQUIRED_ARTIFACT_MISSING.
  end note

  note right of Running
    Running does not mean final files exist.
    An OpenClaw running handle is only an async task handle.
    The transport must continue polling the bridge task snapshot.
  end note
```

## State Field Relationship

```mermaid
flowchart LR
  LS["TaskThread.lifecycleStatus"] --> LS2["ready / queued / running / archived"]
  RC["TaskThread.lastResultCode"] --> RC2["success / failed / aborted / artifact_missing / ACP_HTTP_* / OPENCLAW_*"]
  AS["TaskThread.lastArtifactSyncStatus"] --> AS2["queued / running / syncing / synced / partial / failed / no-artifacts / no-exported-artifacts"]
  AP["TaskThread.lastTaskArtifactRelativePaths"] --> AP2["Only files synced from the current run"]
```

Rules:

- `lifecycleStatus=ready` only means no task is currently running.
- Success or failure is read from `lastResultCode`.
- The artifact panel reads `lastArtifactSyncStatus` and `lastTaskArtifactRelativePaths`.
- `lastTaskArtifactRelativePaths` must only contain artifacts from the current run.

## App Request Contract

App requests to bridge use the unified ACP entrypoint. OpenClaw is selected with routing metadata, not with an app-facing OpenClaw URL.

The app sends:

- `sessionId`
- `threadId`
- `prompt`
- `workingDirectory`
- `remoteWorkingDirectoryHint`
- `routing`
- `metadata.xworkmateTaskArtifactContract`

For Gateway/OpenClaw, the app injects `currentTaskWorkspace` into both prompt context and metadata. The remote runtime must export final files into the current task artifact scope before returning success.

The prompt context contains:

- `sessionKey`
- local workspace
- remote workspace hint when available
- current task workspace
- workspace isolation rules
- final artifact contract rules

The local transcript stores the user's original text. Internal workspace context is only sent to the external task runtime.

## Bridge / OpenClaw Async Contract

The transport handles these bridge methods:

- `session.start`: start a new turn.
- `session.message`: continue an existing TaskThread.
- `xworkmate.tasks.get`: recover or query terminal task snapshot.
- `xworkmate.tasks.cancel`: cancel a running OpenClaw task.

Important recovery rule:

> A running OpenClaw task handle is never a final result.

When `session.update` contains `status=running` with `runId` and `artifactScope`, the app transport must use those fields only as query parameters for `xworkmate.tasks.get`. It must continue polling until the bridge returns a terminal snapshot:

- `completed` with artifacts -> success path.
- `failed`, `artifact_missing`, `cancelled`, or `canceled` -> failure path.
- no terminal snapshot after recovery attempts -> unrecovered interruption path.

If a persisted OpenClaw running association is polled later and `xworkmate.tasks.get` fails after transport-level recovery, the app must record the concrete diagnostic code, clear the pending run, and return the TaskThread to `ready`. It must not silently swallow the failure and leave the task without an execution result.

## Artifact Rules

The app syncs artifacts only when the bridge/OpenClaw terminal result establishes them as current-run final artifacts.

Valid success:

- `success=true`
- terminal bridge/OpenClaw snapshot
- standard artifact contract fields are present
- artifact scope belongs to the current session and run

Failure / no-sync cases:

- `success=false` with partial artifacts
- `OPENCLAW_REQUIRED_ARTIFACT_MISSING`
- `artifact_missing`
- `no-exported-artifacts`
- text-only file/path claims
- files from previous runs
- files from global OpenClaw workspace/cache
- placeholder artifacts generated by a guard

`openclaw returned partial artifacts without required final deliverables` means the remote artifact contract was not satisfied. It is not an app-side UI classification failure.

## OpenClaw Artifact Scope

```mermaid
flowchart TD
  CTX["OpenClaw context<br/>sessionKey + runId + workspaceDir"] --> PREP["prepareXWorkmateArtifacts"]
  PREP --> SCOPE["artifactScope = tasks/<session>/<run>"]
  SCOPE --> DIR["artifactDirectory"]
  DIR --> RUN["OpenClaw writes files"]
  RUN --> COLLECT["collectAndSnapshotXWorkmateArtifacts"]
  COLLECT --> EXPORT["exportXWorkmateArtifacts"]
  EXPORT --> VALIDATE{"scope matches session/run?"}
  VALIDATE -->|No| ERR["Reject cross-session / cross-run artifact"]
  VALIDATE -->|Yes| MANIFEST["manifest + artifact refs/files"]
  MANIFEST --> BR["Bridge terminal snapshot"]
  BR --> APP["App syncs current-run artifacts"]
```

## Boundary Rules

- The app does not store or construct OpenClaw runtime URLs.
- OpenClaw `session.start` and `session.message` use `/acp/rpc` with explicit routing metadata.
- `/gateway/openclaw` and provider-specific paths are not app-facing paths.
- The bridge/OpenClaw terminal task snapshot is the final artifact truth source.
- App local workspace contents are not used to decide whether a remote run produced final deliverables.
- Compatibility/fallback fields for final artifacts are not allowed unless an explicit bridge contract requires them.