fix: use 0,0 for min dimensions in Linux disableSizeConstraints

[leaanthony]

Summary

• Linux disableSizeConstraints() was passing monitor position coordinates (x, y) as minimum width/height to setMinMaxSize()
• On multi-monitor setups this set nonsensical minimum sizes (e.g., minWidth=1920 for a monitor at x=1920)
• Pass 0, 0 for min dimensions, consistent with Windows and macOS behavior

Test plan

• TestDisableSizeConstraintsDoesNotUsePositionAsDimension verifies position values don't leak into min dimensions
• TestSetMinMaxSizeZeroMinIsCorrect verifies disabled constraints have zero min and positive max
• Manual: fullscreen a window on a multi-monitor setup, unfullscreen, verify the window can be resized freely

Fixes #4429

[coderabbitai]

Important

Review skipped

Draft detected.

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: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: fe266e60-c129-45b7-a64d-a3d07c3305ae

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/4429-linux-size-constraints

---

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 and usage tips.}

[leaanthony]

Good bug fix! Using monitor position coordinates as minimum width/height was causing nonsensical constraints on multi-monitor setups. The tests verify the fix.

I've dispatched cross-platform test sub-issues:

• WAI-231 - macOS testing
• WAI-232 - Linux testing (includes this PR)
• WAI-233 - Windows testing

Once all platforms report back with successful test results, I'll apply the reviewed ✅ label.

CC @leaanthony