Hack Day: FDC3 Version 3 Update

[DovOps]

Concept

Update TraderX's FDC3 implementation to exercise FDC3 v3 ahead of GA, using the FDC3 3.0.0-alpha.2 client package and the Sail sail-v3-beta branch as the demo/runtime target.

This can run as a hack day track even while FDC3 v3 is still pre-release: the goal is to validate the migration early, identify Sail/Web Agent gaps, and make TraderX a useful reference/demo app for v3 interoperability.

Prototype Direction

• Move TraderX frontend integration to official @finos/fdc3@3.0.0-alpha.2 and getAgent() semantics.
• Stand up a local Sail v3 beta sidecar for a repeatable demo workspace.
• Seed AppD records for TraderX, Mini TraderX, TraderX Intent Launcher, TradingView-style demo apps, Pricer, and FINOS conformance apps.
• Use canonical fdc3.instrument broadcasts for security selection.
• Add TraderX-specific traderx.account context for account selection between TraderX windows.
• Add a standalone /mini-traderx companion window that listens for global account/instrument context, shows current price, and displays a live position blotter filtered to the selected instrument.
• Keep Mini TraderX scoped to account, instrument, price, and positions only; trade/order ticket launching remains in main TraderX and the separate Intent Launcher.
• Verify real Sail delivery of broadcasts across TraderX, Mini TraderX, launcher, TradingView, and Pricer.

Demo Ideas

1. Open a Sail v3 workspace with main TraderX, Mini TraderX, TradingView Chart/Market Data, Pricer, and Intent Launcher already laid out.
2. Select a position/security in main TraderX and watch Mini TraderX plus external apps pivot through fdc3.instrument.
3. Change selected account in main TraderX and watch Mini TraderX pivot through traderx.account.
4. Use Intent Launcher to raise TraderX.CreateTradeTicket / TraderX.CreateOrderTicket for the current instrument.
5. Show fallback/local-only behavior when no FDC3 agent is present.
6. Capture conformance/regression gaps for Sail v3 beta and FDC3 alpha.

Current Prototype Notes

• State 014 is the target state for this work.
• FDC3 package target: @finos/fdc3@3.0.0-alpha.2.
• Sail target: sail-v3-beta branch.
• Keep TraderX payloads canonical for fdc3.instrument.id.ticker; isolate Sail/demo compatibility shims in state generation/bootstrap code.
• Account context should only carry account identity/display name, not balances, positions, or P&L.

Acceptance Criteria

• TraderX state 014 can start TraderX + Sail v3 beta + demo apps with one generated runtime command.
• Sail workspace seeds all demo apps and no dead local AppD ports.
• Main TraderX publishes and consumes fdc3.instrument.
• Main TraderX and Mini TraderX publish/consume traderx.account.
• Mini TraderX runs standalone at /mini-traderx and renders live account/instrument-scoped positions.
• Smoke test proves real Sail broadcast delivery to Mini TraderX, launcher, TradingView, and Pricer.
• Notes collected for FDC3 v3/Sail beta gaps before v3 GA.