Slice 1 (debug, highest user impact): On a new branch fix/panel-c-falling-targets, reproduce and fix the bug where falling characters/targets in Panel C fail to enter the player's viewport during gameplay. Provide the root cause, the minimal fix, and a Playwright lane that asserts targets reach the visible spawn-to-catch zone.
Slice 2 (debug): On the same or a follow-up branch, reproduce and fix the power-ups UI being rendered in the wrong location until the browser "back"/exit-fullscreen action is triggered. Identify whether this is a fullscreen-state event, a layout-measurement timing issue in display-manager.js, or a CSS positioning context bug. Ship the smallest fix plus a regression test.
Slice 3 (review, deferred): Produce a high-level engineering review of the codebase as a comment/report (not a new Markdown file), focused on runtime architecture, test coverage gaps, and concrete cleanup candidates ranked by risk/impact. Do not act on findings in the same PR.
Slice 4 (deferred, requires policy decision): Decide README strategy — either amend the Markdown Policy to permit README.md, or extend the existing Plan Genesis.md overview section.
Slice 5 (deferred): Based on Slice 3 findings, open a separate scoped "trim the fat" PR with explicit removal criteria.
Slice 1 (debug, highest user impact): On a new branch
fix/panel-c-falling-targets, reproduce and fix the bug where falling characters/targets in Panel C fail to enter the player's viewport during gameplay. Provide the root cause, the minimal fix, and a Playwright lane that asserts targets reach the visible spawn-to-catch zone.