# Data Flow

## Primary Flows

| Flow | Source | Destination | Notes |
|---|---|---|---|
| Business directive | Manual workbench or AgentBus | Route orchestrator | Source changes input/reply adaptation, not parser or confirmation policy |
| Parsing | Route orchestrator | AI Skill or deterministic Program parser | AI/Shadow/Auto/Program mode is frozen per task |
| Operation | Parser | Control-plane task and confirmation | Must validate against the same final contract |
| ERP execution | Confirmed task | Chrome extension and logged-in ERP page | Requires unique object, page identity, ownership, and write preflight |
| Completion evidence | ERP response/requery | Control-plane receipt and business reply | Evidence is action-specific; uncertain writes fail closed |
| Passenger workbook | Single `.xls/.xlsx` attachment | Deterministic encrypted canonical TSV | First row ignored, second row fixed header, exact leader-contact rules |
| WeChat roster attachment | Strict transport envelope plus one structured `payload.attachments[]` entry | Existing `awaiting_attachment` task | Explicit conversation ID wins; otherwise strict `Conversation:` supplies the fallback. Placeholder text alone never creates a task. |
| Internal attachment download | Credential-free HTTPS URL | Bounded in-memory workbook bytes | Internal/private DNS answers are allowed; the selected address is pinned, every redirect is revalidated, and URL/host/IP/bytes are omitted from logs. |
| Operational diagnostics | Service, request, task, parser, AgentBus, attachment, database, and cleanup stages | Structured stdout/stderr and bounded Docker logs | Correlation identifiers, codes, outcomes, and durations only; no secrets or business payloads. |
| Confirmation export | ERP source file | Archived source plus mobile delivery artifact | Visitor XLS becomes real XLSX; other types prefer PDF |
| Release | Editable source | `dist/release-manifest.json` and versioned artifacts | Manifest owns current hashes and filenames |

## State Ownership

- PostgreSQL owns durable control-plane task, session, confirmation, channel, audit, and outcome state.
- Production attachment bytes use the configured OSS provider; normalized sensitive fields remain encrypted.
- Chrome extension local state is bounded execution/reconciliation support, not canonical business history.
- `.project-docs/30-worklog/tasks/` owns task-local project memory; canonical project state is an integrated projection.

## External Interfaces

- Operator workbench at the control-plane service.
- AgentBus WebSocket channels and attachment delivery.
- Logged-in ERP browser pages under the Chrome extension host permissions.
- PostgreSQL, OSS, deployment gateway, and authenticated artifact download.

## Last Updated

2026-08-31