feat(profiles): set_profile MCP tool + session resolver + REST /api/v1/profiles (Profiles v2 T2, MCP-3241) #2130

Job	Run time
Build Frontend	23s
End-to-End Tests (ubuntu-latest, 1.25)	11m 0s
Cross-Platform Logging Tests (ubuntu-latest)	1m 32s
Cross-Platform Logging Tests (windows-latest, $env:LOCALAPPDATA\mcpproxy\logs, Windows Applicatio...	1m 53s
Cross-Platform Logging Tests (macos-latest, $HOME/Library/Logs/mcpproxy, macOS File System Progra...	1m 8s
OAuth E2E Tests	46s
Integration Tests	5m 9s
Stress Tests	0s
	21m 51s

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