[hdcodedev]

Summary

• Refresh all 24 docs GIF scenarios for the release; 23 baseline files changed.
• Focus the README on v3 with a stacked-area example and a horizontal gradient across the bar plot, each paired with its matching GIF and data.
• Update API guidance for sizing, styles, subtitles, selection, and live-line behavior, and link to the current v3 snapshot docs and demo.

Local Validation

• ./gradlew ktlintCheck
• ./gradlew :charts-<module>:jvmTest
• ./gradlew chartsTestJvm
• ./gradlew ciCompile
• ./gradlew chartsCheck
• ./gradlew apiCompatibilityCheck
• ../charts-playground/gradlew -p ../charts-playground -DchartsLocalPath="$PWD" ciCompile
• ./gradlew :androidApp:validateDebugScreenshotTest
• ./gradlew updateScreenshots

Additional validation:

• ./gradlew recordDocsGifs --no-daemon — passed on the running emulator; all 24 scenarios recorded.
• ./gradlew :androidApp:compileDebugKotlin --no-daemon --console=plain — passed with all 11 README Compose snippets compiled through a temporary verification source, which was removed afterward.
• git diff --check and git diff --cached --check — passed.
• All declared GIF scenarios have non-empty baseline files. Local README links and assets resolve; representative frames from both embedded GIFs were inspected.

The checklist commands above were not run for this documentation and baseline refresh. GIF comparison remains a CI check.