Let fluksio status read a local installation

`runs --local` already exists for the reason status needs it: the flows and the
history are in this directory, and looking at them should not need a server.
Watching still does — an in-process engine is the command itself, so nothing
could change under it — and says so rather than sitting on a still frame.

Found setting up a sandbox that drives the SDK entirely through --local.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019V5bsYGNxcgPs4xXmTPx69

docs/code/cli.md

@@ -241,6 +241,10 @@ whether it has unpublished changes, and the last few failures under them.
 the cadence the dashboard polls at, since nothing here moves faster. It needs a
 terminal; without one, run it without `--watch` and the output pipes cleanly.
 
+`--local` reads the flows and history out of this directory with no engine
+served, the same way `runs --local` does. It cannot be watched: an in-process
+engine is the command itself, so nothing changes under it.
+
 ### `fluksio runs`
 
 ```sh