fix: Fix crash after SDK initialization

[serhii-londar]

Closes #362

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Note

Low Risk
Small, localized change that primarily adds error handling and conditional cleanup around filesystem operations; risk is limited to fallback paths and deintegrate behavior.

Overview
Prevents crashes during SDK initialization by replacing several try! calls that create localization subfolders (Crowdin, RealtimeUpdates, XCStrings) with do/catch, logging failures and falling back to CrowdinFolder.shared.

Tightens deintegration cleanup to avoid removing the Crowdin root folder when it’s being used as the active localizationFolder fallback, reducing the chance of deleting shared storage unexpectedly.

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[codecov]

Codecov Report

❌ Patch coverage is 36.36364% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.88%. Comparing base (b3b685b) to head (75652d3).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...Operations/CrowdinXcstringsDownloadOperation.swift	0.00%	12 Missing ⚠️
...calization/Provider/LocalLocalizationStorage.swift	71.43%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #369      +/-   ##
==========================================
- Coverage   55.96%   55.88%   -0.08%     
==========================================
  Files         136      136              
  Lines        6309     6327      +18     
==========================================
+ Hits         3530     3535       +5     
- Misses       2779     2792      +13     

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[Copilot]

Pull request overview

This PR fixes a critical crash during SDK initialization caused by force-unwrapping folder creation operations. The crash was occurring when CrowdinFolder.shared.createFolder() failed, causing the app to crash on launch as reported in issue #362.

Changes:

• Replaced try! (force try) with optional try (try?) and fallback values for folder creation in three locations
• Changed LocalLocalizationStorage to fall back to the root CrowdinFolder when subfolder creation fails
• Changed XCStringsStorage to use lazy initialization with a fallback to root CrowdinFolder
• Changed RULocalLocalizationStorage to conditionally set the folder only if creation succeeds

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
Sources/CrowdinSDK/CrowdinSDK/Localization/Provider/LocalLocalizationStorage.swift	Replaced force try with optional try and nil-coalescing fallback to CrowdinFolder.shared
Sources/CrowdinSDK/Providers/Crowdin/LocalizationDownloader/Operations/CrowdinXcstringsDownloadOperation.swift	Changed static property to use lazy initialization with optional try and fallback to CrowdinFolder.shared
Sources/CrowdinSDK/Features/RealtimeUpdateFeature/LocalizationProvider/RULocalLocalizationStorage.swift	Added conditional folder assignment instead of force try, falling back to parent class's folder

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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