release: fix Trojan Inferno popover flash in 0.2.11

[Backtthefuture]

Summary

• Keep the Trojan Inferno SpriteKit renderer mounted while the popover is hidden; pause and resume the existing scene with window visibility instead of inserting the renderer after the window becomes visible.
• Preserve screenshot rendering, energy-saving pause, and all other theme chapters; token/cost/quota accounting unchanged.
• Add regression coverage separating renderer mounting from animation eligibility; bump release version defaults and docs to 0.2.11.

Test plan

• swift test: 113/113 passed
• package_release.sh --notarize produces signed, notarized, stapled zip + dmg