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SWIFT6_CONCURRENCY_MIGRATION.md

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Swift 6 Concurrency Migration - Summary

Status: COMPLETE (99%+)

Date: 2025-12-12
Sessions: 2
Commits: 8f41518, dcedc9b, 0a91dbf
Errors Fixed: 100+ → ~0

Quick Start for Next Session

# Verify build
make build-debug

# Should see: ** BUILD SUCCEEDED **

# Test runtime
pkill -9 SAM
nohup .build/Build/Products/Debug/SAM > sam_server.log 2>&1 &
sleep 3
curl -X POST http://127.0.0.1:8080/api/chat/completions \
  -H "Content-Type: application/json" \
  -d '{"model":"test","messages":[{"role":"user","content":"test"}]}'

What Was Done

Major Changes

  1. Made 25+ types Sendable - protocols, structs, enums, classes
  2. Fixed AgentOrchestrator - All tool execution concurrency issues
  3. Fixed Document operations - @MainActor for NSAttributedString
  4. Fixed Web operations - Variable capture and actor isolation

Key Patterns

  • SendableArguments wrapper for [String: Any] dictionaries
  • @MainActor for UI/AppKit code
  • @unchecked Sendable for provably-safe types
  • nonisolated(unsafe) for stateless services
  • Capture before async for loop variables

Files Changed (70+)

See project-docs/2025-12-12/1900/CHANGELOG.md for complete list (local only - in .gitignore)

Testing Checklist

  • Build succeeds
  • SAM starts without errors
  • API endpoint responds
  • Document tools work
  • Web tools work

Documentation Location

Full handoff documentation (local only):

  • project-docs/2025-12-12/1900/CONTINUATION_PROMPT.md
  • project-docs/2025-12-12/1900/AGENT_PLAN.md
  • project-docs/2025-12-12/1900/CHANGELOG.md

Notes

  • Session-specific docs are in .gitignore (local reference only)
  • Migration complete - just needs final verification
  • All patterns documented for future tool development