fix: normalize .wav MIME type to audio/wav

[ezynda3]

System MIME databases vary: some return audio/x-wav for .wav, which causes TestDetectMediaType to fail on certain CI images. This change forces the canonical audio/wav type for .wav files so the test is deterministic across environments.

Summary by CodeRabbit

• Bug Fixes
  • Improved recognition of WAV files so they are consistently treated as audio/WAV across the app.
  • This helps prevent incorrect file-type detection in workflows that rely on media identification.

[mark-iii-labs-huly]

Connected to Huly®: KIT-82

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: fcce93b4-7f4a-4e07-a9da-ad5ca252ab6a

📥 Commits

Reviewing files that changed from the base of the PR and between 4aa786f and 9abd091.

📒 Files selected for processing (1)

• internal/ui/fileutil/processor.go

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📝 Walkthrough

Walkthrough

In detectMediaType, a new early-exit branch checks if the file extension is .wav and immediately returns audio/wav, bypassing the existing mime.TypeByExtension logic and subsequent fallbacks.

Changes

WAV MIME Type Fix

Layer / File(s)	Summary
.wav override in detectMediaType internal/ui/fileutil/processor.go	Inserts an extension check at the top of detectMediaType that returns audio/wav for .wav files before any other MIME resolution.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A wav file hops in, seeking its type,
No longer lost in the MIME-lookup hype.
The rabbit said "Simple! audio/wav it shall be,"
One early return sets the audio file free. 🐇🎵

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely matches the change to normalize .wav MIME handling to audio/wav.
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

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-wav-mime-type

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