v0.9.8 — directional flow map: see every exchange's direction, replay any run

Signed installers for macOS and Windows (attached below once the packaging build completes).

What's new

The run inspector's flow map now shows direction, drawn only from what was actually observed:

• Persistent directional arrows on every edge — an outbound request and its verified response light independently. An exchange that never completed shows an outbound arrow and nothing back; the map never claims a response it didn't see.
• The plain-EHR data-source node lights for real. The bundled Smart Gateway (v0.26.0) now reports every read of its configured data source (sor.read events), and those reads appear as first-class steps with plain-language narration ("The gateway read the member's open order from its data source."). With an older gateway that doesn't report reads, the map falls back to a clearly-labeled static treatment — "seeded read — not observed".
• Click a step to see its path — the step's edge highlights, the others dim, and a pulse replays the exchange's direction. Each step's detail view opens with direction rows: who sent what to whom, observed-only.
• Replay run — replay a completed run's whole story in observed event order, edge by edge, node by node. Works for any completed run, including one you just watched finish live.
• Data-source read steps render honestly in both detail views: a local read is a single observed frame — the returned resource labeled as such — never presented as a request/response exchange through the Hub.

Under the hood

• Bundled Smart Gateway updated to v0.26.0 (adds the sor.read observer event kind under the observer stream's evolving contract) and shn-sdk to v0.29.0.
• Run fixtures re-captured from live runs so the committed examples carry real read events.

Full test suites green (Go daemon under race detection, 382 UI tests, desktop shell); all eight prior-authorization scenarios verified end-to-end through the daemon's API in both lanes.