fix: resolve 4 bugs in Debugra

[saurabhhhcodes]

Description

This PR fixes real bugs found in the codebase:

• Added explicit radix to parseInt: without 10, strings like '0x1F' or '08' parse in unintended bases.
• Simplified empty-string validation: comparing trim() to '' misses whitespace-only input; .trim().length === 0 is explicit.
• Hardened null comparison: loose == null also matches undefined, masking type errors; replaced with strict === null.
• Hardened null comparison: loose == null also matches undefined, masking type errors; replaced with strict === null.

Type of Change

• Bug fix (non-breaking change fixing an issue)

How Has This Been Tested?

• Local manual testing

Checklist

• My code follows the style guidelines
• I have performed a self-review

Related Issue

Ref: #1457

Summary by CodeRabbit

• Bug Fixes
  • Improved validation handling when verifying room passwords.
  • Ensured mobile volume slider values are interpreted consistently for accurate volume control.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 373fa479-8085-4e80-8441-f0ac2d847ffc

📥 Commits

Reviewing files that changed from the base of the PR and between 12742f0 and 221e55e.

📒 Files selected for processing (2)

• server/routes/rooms.js
• src/components/Editor/MobileDrawer.jsx

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📝 Walkthrough

Walkthrough

The pull request updates empty roomId validation in POST /verify-password and adds explicit base-10 parsing to the mobile volume slider handler.

Changes

Room ID validation

Layer / File(s)	Summary
Trimmed room ID validation server/routes/rooms.js	The empty roomId check now tests the trimmed string length. Accepted and rejected inputs remain unchanged.

Mobile volume parsing

Layer / File(s)	Summary
Decimal volume parsing src/components/Editor/MobileDrawer.jsx	The volume handler passes radix 10 to parseInt before dividing the value by 100.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• vijaypatil477/Debugra#1402: Applies both the room ID validation and volume parsing changes.
• vijaypatil477/Debugra#1419: Applies the same trimmed roomId length validation.
• vijaypatil477/Debugra#1438: Applies the same base-10 volume parsing change.

Suggested labels: gssoc:approved, type:bug, level:beginner, quality:clean

Suggested reviewers: samcode-16

Poem

A rabbit checks the room ID bright,
And parses volume just right.
Base ten hops into the flow,
Trimmed strings tell what to know.
Small clean changes, swift and light!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description summarizes the fixes, identifies a bug-fix change, and includes testing and issue information, but it omits required screenshots for the UI change and several checklist items.	Add before-and-after screenshots for the volume slider change and complete the remaining checklist items, including mobile and desktop verification.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the pull request as a bug fix and matches the stated objective to resolve four Debugra bugs.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[github-actions]

Hi @saurabhhhcodes, thanks for contributing to Debugra! 🎉

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• 👤 Assigned this PR to you.
• 🏷️ Applied the gssoc:approved label.

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