feat(contractor-onboarding): handle UK and Saudi Arabia edge cases

[gabrielseco]

This PR addresses edge cases in the contractor onboarding flow for UK and Saudi Arabia, including proper handling of IR35 status and employment contract details specific to these regions.

Key Changes

Core Features

• File Management: Added new files.ts API module with hooks for uploading, downloading, and managing employment files
• IR35 Support: Introduced IR35 file handling for UK contractors with dedicated file subtype constant
• Saudi Arabia Nationality: Fixed retrieval of Saudi nationality status from employment.contract_details.nationality field

[github-actions]

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npm warn exec The following package was not found and will be installed: tsx@4.21.0

📊 Coverage Report

✅ Coverage increased! 🎉

Metric	Current	Previous	Change	Status
Lines	87.76%	87.58%	+0.17%	🟢
Statements	87.37%	87.19%	+0.18%	🟢
Functions	83.43%	83.25%	+0.19%	🟢
Branches	79.21%	78.96%	+0.25%	🟢

Detailed Breakdown

Lines Coverage

• Covered: 2881 / 3283
• Coverage: 87.76%
• Change: +0.17% (60 lines)

Statements Coverage

• Covered: 2934 / 3358
• Coverage: 87.37%
• Change: +0.18% (61 statements)

Functions Coverage

• Covered: 821 / 984
• Coverage: 83.43%
• Change: +0.19% (16 functions)

Branches Coverage

• Covered: 1836 / 2318
• Coverage: 79.21%
• Change: +0.25% (27 branches)

✅ Coverage check passed

[github-actions]

📦 Bundle Size Report

Metric	Current	Previous	Change	Status
Total (gzip)	182.31 kB	179.94 kB	+2.37 kB (+1.3%)	🔴
Total (raw)	483.87 kB	477.83 kB	+6.04 kB (+1.3%)	🔴
CSS (gzip)	18.85 kB	18.85 kB	0 B (0%)	🟢
CSS (raw)	98.92 kB	98.92 kB	0 B (0%)	🟢

Size Limits

• ✅ Total gzipped: 182.31 kB / 185 kB (98.5%)
• ✅ Total raw: 483.87 kB / 500 kB (96.8%)
• ✅ CSS gzipped: 18.85 kB / 25 kB (75.4%)

Largest Files (Top 5)

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2. styles.css - 9.43 kB (0 B (0%))
3. index.css - 9.43 kB (0 B (0%))
4. index.js - 5.69 kB (+9 B (+0.2%))
5. chunk-JTLXUYOR.js - 5.43 kB (new)

View All Files (281 total)

File	Size (gzip)	Change
chunk-3QNS3IZB.js	12.37 kB	0 B (0%)
styles.css	9.43 kB	0 B (0%)
index.css	9.43 kB	0 B (0%)
index.js	5.69 kB	+9 B (+0.2%)
chunk-JTLXUYOR.js	5.43 kB	new
chunk-XOK3XCYN.js	4.07 kB	new
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✅ Bundle size check passed