CivicCast 1.0.0-rc10

CivicCast 1.0.0-rc10

1.0.0-rc10 is 1.0.0-rc9 with one release-build fix so the tag build completes
green and publishes the unified artifact manifest. No product or installer-behavior
change from rc9 — rc9's installer passed a full clean-Windows-VM fresh-tester
gauntlet (install → SmartScreen → reboot survival → WSL2 Ubuntu → service healthy →
Ready → uninstall, no "Not Responding" freeze), and rc10 rebuilds that same code.

The fix

rc9's action-pin fix let the manifest-merge run on a real tag for the first time, which
exposed that the release manifest listed the bundled Linux wheelhouse (a build
intermediate the installer consumes internally, not a published release asset) that the
Windows CI bundle omits — so the fail-closed merge errored. rc10's manifest lists only
top-level published artifacts.

Full evidence + honest gaps: docs/releases/v1.0.0-rc10-verification.md.
Prerelease — not the beta declaration; a 24-hour soak is the remaining step.