Quick-create users targeting one project repeatedly had to restate "in
project X" in every prompt. The modal now exposes a project picker beside
the agent picker, persists the selection per-workspace, and pins the
agent's `multica issue create` invocation to that project so the prompt
text doesn't have to.
The picked project also flows to the daemon as ProjectID/ProjectTitle and
its github_repo resources override the workspace repo fallback — same
treatment issue-bound tasks already get.
Co-authored-by: multica-agent <github@multica.ai>