Fix/focus mode numeric string parsing

[mayurigade-hub]

Related Issue

Closes #321

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Description

Fixed an issue where Focus Mode settings such as dimOpacity, idleTimeout, and transitionDuration were only accepted when stored as numeric values. If these settings were saved as numeric strings (e.g., "0.4" or "20"), they were treated as invalid and reset to their default values.

This fix updates sanitizeFocusMode() to parse numeric strings using Number()/parseFloat() before applying validation and clamping, ensuring valid imported or manually edited settings are preserved.

---

Changes Made

• Updated sanitizeFocusMode() to parse numeric string values.
• Applied clamping after converting string values to numbers.
• Preserved valid Focus Mode settings imported from backups.
• Kept existing validation for invalid or non-numeric values.

---

Steps to Test

1. Open settings.json.
2. Set the following values:

   "focusMode": {
     "enabled": true,
     "dimOpacity": "0.4",
     "idleTimeout": "20",
     "transitionDuration": "2.5"
   }

3. Restart the application.
4. Open the Focus Mode settings.
5. Verify the values are loaded as:
   • dimOpacity: 0.4
   • idleTimeout: 20
   • transitionDuration: 2.5
6. Test with invalid values such as "abc" or "" and verify they fall back to the default values.

---

Expected Result

• Valid numeric strings are converted to numbers and retained.
• Invalid values continue to fall back to defaults.
• Focus Mode settings remain consistent after importing or editing backups.

---

Files Changed

• settingsStore.js

---

Type of Change

☑️ Bug fix

☐ New feature

☐ Breaking change

☐ Documentation update

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[mayurigade-hub]

Hello @SamXop123
Please review this PR.
Thank you!

[github-actions]

🎉 Congratulations @mayurigade-hub! 🎉

Your pull request has been successfully merged into Paraline! Thank you so much for your valuable contribution and effort. Every single improvement helps make Paraline a better desktop experience for everyone! 🙌

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