SSO troubleshooting

[drernie]

Description

Draft troubleshooting guide for customers having SSO issues.

TODO

• [X ] Documentation
• Changelog entry (skip if change is not significant to end users, e.g. docs only)

[greptile-apps]

PR Summary

Added comprehensive SSO troubleshooting documentation focusing on Azure, Google Workspace, and Okta authentication redirect loop issues.

• Added detailed step-by-step guide in /docs/Troubleshooting_SSO.md covering redirect URI verification, log analysis, and token claim verification
• Included specific error codes (e.g., AADSTS50011, AADSTS50008) and their meanings for easier diagnosis
• Added structured troubleshooting table with common issues and fixes
• Integrated new SSO troubleshooting section into /docs/SUMMARY.md documentation hierarchy

_{2 file(s) reviewed, 1 comment(s)
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 39.09%. Comparing base (242b18f) to head (82bc8cd).

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #4330    +/-   ##
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  Coverage   39.09%   39.09%            
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  Files         783      783            
  Lines       34755    34755            
  Branches     5521     5521            
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  Hits        13588    13588            
+ Misses      20624    19985   -639     
- Partials      543     1182   +639     

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catalog	18.12% <ø> (ø)
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docs/Troubleshooting_SSO.md:67

• [nitpick] The phrase 'Redirect loop after login' should be more specific. Consider changing it to 'Redirect loop after SSO login'.

| Redirect loop after login     | Verify redirect URIs and logout URL in Azure/Google/Okta |

docs/Troubleshooting_SSO.md:68

• [nitpick] The phrase 'Check SSO provider logs for error codes' could be more specific. Consider changing it to 'Check SSO provider logs for specific error codes'.

| Authentication fails silently | Check SSO provider logs for error codes                  |