docs: Add comprehensive project documentation from claude-projects scan

Added:
- PROJECTS_INDEX.md - Master catalog of 7 active projects
- GURURMM_API_ACCESS.md - Complete API documentation and credentials
- clients/dataforth/dos-test-machines/README.md - DOS update system docs
- clients/grabb-durando/website-migration/README.md - Migration procedures
- clients/internal-infrastructure/ix-server-issues-2026-01-13.md - Server issues
- projects/msp-tools/guru-connect/README.md - Remote desktop architecture
- projects/msp-tools/toolkit/README.md - MSP PowerShell tools
- projects/internal/acg-website-2025/README.md - Website rebuild docs
- test_gururmm_api.py - GuruRMM API testing script

Modified:
- credentials.md - Added GuruRMM database and API credentials
- GuruRMM agent integration files (WebSocket transport)

Total: 38,000+ words of comprehensive project documentation

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

projects/msp-tools/guru-rmm/agent/Cargo.toml

@@ -54,6 +54,9 @@ sha2 = "0.10"
 # Time handling
 chrono = { version = "0.4", features = ["serde"] }
 
+# Lazy static initialization for Claude executor
+once_cell = "1.19"
+
 # Hostname detection
 hostname = "0.4"