fix: correct domain assignment for text-extracted credentials

[l50]

Key Changes:

• Fixed misattribution of domains for text-extracted credentials by preferring directory-attested domains
• Introduced reconciliation logic to resolve domain ambiguities based on trusted enumeration data
• Enhanced logging to warn when a credential's domain is reassigned
• Added comprehensive tests covering domain reconciliation scenarios

Added:

• Domain reconciliation logic for credentials - Implemented reconcile_extracted_credential_domain to prefer directory-attested domains when the username is uniquely identified in state.users
• Unit tests for domain reconciliation - Added a dedicated test module with coverage for unique, ambiguous, and case-insensitive username/domain scenarios in tests.rs

Changed:

• Credential processing pipeline - Updated extraction logic to apply domain reconciliation before storing credentials, ensuring downstream authentication attempts use the correct domain
• Logging for domain reassignment - Added warning logs when a credential's domain is reassigned to inform users of corrections during processing

[codecov]

Codecov Report

❌ Patch coverage is 89.47368% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.76%. Comparing base (95f48cb) to head (308b5b6).

Files with missing lines	Patch %	Lines
ares-cli/src/orchestrator/result_processing/mod.rs	71.42%	8 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #316   +/-   ##
=======================================
  Coverage   78.76%   78.76%           
=======================================
  Files         439      439           
  Lines      124138   124213   +75     
=======================================
+ Hits        97773    97840   +67     
- Misses      26365    26373    +8     

Files with missing lines	Coverage Δ
...es-cli/src/orchestrator/result_processing/tests.rs	100.00% <100.00%> (ø)
ares-cli/src/orchestrator/result_processing/mod.rs	26.77% <71.42%> (+1.35%)	⬆️

... and 1 file with indirect coverage changes

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