gosentry/CLAUDE.md

GoSentry — instructions for Claude Code

Cross-platform desktop scheduler (Go + Fyne GUI). Single process: GUI, application service, scheduler, storage, and command runner in one binary.

Read before changing code

• docs/STANDARDS.md — required. Code-quality rules and the list of intentional behavior. Do not "fix" anything listed there as intentional; if a change contradicts it, update the document in the same commit.
• docs/ARCHITECTURE.md — package contracts, event flow, and §Platform layer (why and where OS-specific code lives).
• docs/TESTS.md — test layout and conventions.
• docs/ROADMAP.md — deliberately out of scope.

Key rules (full list in STANDARDS.md)

• src/app.Service is the sole owner of job and runtime state; the UI reads it through typed events, never through shared mutable state.
• User-facing errors go to dialog.ShowError or a History event — never a silent return.
• Pure helpers get a unit test in the same package; fixes of severity ≥ medium get a regression test.
• UI view constructors accept an injected *app.Service; app.Open() is called only from run.go.
• Off-main-thread widget updates must go through fyne.Do (Fyne v2.7.4).

Build and test

CGO is required — the Fyne GUI links native libraries. On Windows the toolchain is MSYS2 UCRT64; the default shell environment here has CGO off, so set it explicitly:

$env:Path = 'C:\msys64\ucrt64\bin;' + $env:Path; $env:CGO_ENABLED = '1'

Then:

scripts\test.bat

which runs go vet ./... and go test -race ./.... Release binaries come from scripts\build-windows.bat / scripts/build-linux.sh — see docs/DEVELOPMENT.md.

Repository conventions

• Commit directly to main; do not create feature branches.
• Notable changes get a docs/CHANGELOG.md entry under the current version.
• The window/taskbar icon comes from the gosentry.ico PE resource — regenerate it from the PNGs whenever an icon changes, not just the embedded asset.