fix(editor): zoom/pan the whole timeline pane on scroll, not just the lanes (cherry-pick for 1.10.0-rc.2)

[EtienneLescot]

Cherry-pick of #467 onto release/v1.10.0 for the 1.10.0-rc.2 cut.

Summary

• The wheel listener for Ctrl+Scroll zoom / Shift+Scroll pan lived on .tlTracks alone, so scrolling over the ruler, the hint labels, or the nav/minimap bar silently did nothing — only the lanes responded.
• Moved the listener to the whole timeline pane (the root .tl container) while keeping the geometry math anchored to the tracks element.
• Regression tests cover both the Ctrl+wheel zoom and Shift+wheel pan paths from the ruler.

Test plan

• Cherry-picked cleanly onto release/v1.10.0, no conflicts
• npx vitest --run on the two affected test files — 16 passed
• npx biome check on changed files — clean
• npx tsc --noEmit — clean
• Already reviewed and merged to main as fix(editor): zoom/pan the whole timeline pane on scroll #467 (CodeRabbit: no actionable comments)

🤖 Generated with Claude Code

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: b371434f-f6b8-471f-b4a8-192f382fbee2

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}