Instruction file imported from y3owk1n/neru (.cursor/rules/neru.mdc). Copyright stays with the author.

Neru agent rules

• AGENTS.md at the repo root is the full project contract — architecture, commands, conventions. Read it before structural changes.
• The One Rule: non-darwin-tagged code must never import internal/adapter/platform/darwin. Cross the boundary via ports.SystemPort or a build-tagged dispatch pair.
• Shared code uses global top-left origin, Y down, unscaled pixels. Cocoa coordinate flips stay inside the darwin adapter.
• Unimplemented platform behavior returns derrors.CodeNotSupported — never a silent no-op — and the capability matrix (internal/ports/capabilities.go) must stay honest (stub, not supported).
• internal/adapter/platform/linux/wlr_protocol/ is generated (just generate-all-protocols); never hand-edit it.
• Pre-commit gate: just fmt && just lint && just test && just build. Before pushing: just ci.
• Never log UI text, element titles/values, hint search terms, or keystreams; log counts, durations, IDs, booleans.