[codex] Apply UI review optimizations

[Pigbibi]

Summary

• Add a full schedule list alongside the weekly grid for long course names and accessibility sizes
• Harden shared tiles, tabs, chips and image components for long text and less cropping
• Keep typography letter spacing at 0sp across the app

Validation

• ./gradlew :app:compileDebugKotlin --no-daemon --max-workers=1 -Dorg.gradle.jvmargs=-Xmx768m
• git diff --check