feat: editor project chip wiring (multi-project stage 2 host side)

FlowsPage passes the active workspace to the editor and switches the
workspace when the operator accepts a file-wins mismatch. Rebuilds the
chip live on workspace change. Editor package bumped to 0.22.0.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

CHANGELOG.md

@@ -5,6 +5,22 @@ version + `kStudioVersion` in `lib/main.dart` stay in lockstep.
 
 ## Unreleased
 
+### Added (multi-project, stages ① + ②)
+
+- **Workspace switcher.** The Audit and Approvals AppBars carry a
+  workspace control listing the hub's project registry (colour dot per
+  project, a shield for `protected`, an honesty tooltip). "All projects"
+  stays reachable — a filter, not a jail. The selection is persisted and
+  shared across pages; it re-scopes the audit list AND live stream
+  hub-side, scopes approvals (pending + history), and drives the sidebar
+  approval badge. Runs launched from the editor are stamped with the
+  active workspace — unless the flow file declares its own `project:`,
+  in which case the file wins (CLI semantics).
+- **Editor project chip + file-wins guard.** A flow file's own
+  `project:` shows as a chip; on mismatch with the active workspace an
+  amber pill offers a one-click switch (the file still wins for the run).
+  Backed by editor package 0.22.0.
+
 ### Fixed (usertest 2026-07-10 findings)
 
 - **Approval prompts localize.** An approval whose flow step gave no