Cordial 0.4.0 — sound comes out

Sound comes out, the pointer locks, and two claims are withdrawn.

• Sound comes out, and the microphone is only open while Roblox is recording.
• The pointer locks, and the run ends when the window closes.
• The launcher stops imposing a session length. --run 30 was a debugging aid
  that had quietly become a default.
• The busy-profile message names the process actually holding the lock instead
  of guessing.
• The MangoHUD hint named two packages and sent people to the wrong one.

Retracted here: the 1 fps report. It was the desktop, not the engine.

Corrected here: ADR-015. Roblox publishes no Android build that Cordial may
ship, so Cordial may fetch a build and may never ship one.

Tagged retroactively, at the commit that set the workspace version to 0.4.0.