Redesign platformer runner as an original neon astronaut character

[smcga]

Motivation

• Replace the existing Sonic-like cobalt/quill runner silhouette with a new original character to avoid resemblance to existing IP while keeping an equally iconic visual identity.
• Update effect metadata and documentation so the effect catalog and generated docs reflect the new mascot concept.

Description

• Replaced the runner sprite implementation in src/renderer/effects/platformerScroll.ts by changing the color palette (RUNNER_COLORS) and rebuilding buildRunnerSprite parts to produce a neon astronaut (helmet, visor, antenna, gauntlets, jetpack fin, boots) while preserving existing animation and deterministic layout.
• Adjusted sprite part names and coordinates (e.g. helmet-front, antenna-tip, gauntlet-front, boot-front) and retained the shadow and movement math so visual behavior remains consistent.
• Updated unit tests in src/renderer/effects/platformerScroll.test.ts to assert the new part names and palette colors and to continue verifying animated limb movement and color usage.
• Updated manifest and docs text in src/renderer/effects/manifest/platformerScroll.manifest.ts, regenerated docs/effects.md, and updated the README effect catalog entry to describe the neon astronaut mascot.

Testing

• Ran npm run docs:effects and successfully regenerated docs/effects.md.
• Ran npm run docs:check which executed the docs tests and passed (all checks succeeded).
• Ran npx vitest run src/renderer/effects/platformerScroll.test.ts and all platformerScroll unit tests passed (9 tests passed).

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
codexperimental	Ready	Preview, Comment	Apr 7, 2026 7:25pm