#174 fix: ESM __dirname shim + Windows path rejection in send/receive_files

[Anonymous]

Originally created by: kumaakh

Summary

• #167 fix(T1.1): Add ESM __dirname shim in compose-permissions.ts — mirrors the pattern from install.ts so findProfilesDir() works under tsx/ESM without ReferenceError
• #146 fix(T1.2): Fix receive_files/send_files Windows path rejection — adds isContainedInWorkFolder() helper in platform.ts that handles Windows drive-letter paths without path.posix.resolve (which treats C: as relative); adds 6 new tests covering all four path formats

Test plan

• [ ] CI green (801 tests passing locally)
• [ ] compose_permissions no longer throws ReferenceError: __dirname is not defined on ESM hosts
• [ ] send_files / receive_files accept C:\git\project\file.ts paths on Windows members

🤖 Generated with Claude Code

[Anonymous]

Ticket changed by: kumaakh

• status: open --> closed