What

Implemented full import system support for Rey and rebased it cleanly on current master.

• Added export pub function modifier support
• Enforced visibility rules:
  • export pub func is importable
  • pub func is not importable from other files/modules
  • func is private
• Added file-level imports:
  • import actuator.name
  • import actuator.{name, other}
• Added module-level imports:
  • import action
  • import action::walk
  • import action::{walk, run}
• Implemented resolver order:
  1. current file directory
  2. project root (entry file directory)
  3. ~/.reyc/std/src for std-prefixed resolution
  4. ~/.reyc/packages for package resolution
• Added module behavior:
  • folder must contain main.rey for import module
  • module namespace auto-collects export pub symbols from rey files in the folder
  • module::item resolves direct file namespaces
• Implemented scope injection behavior:
  • file symbol imports inject direct names
  • module imports inject namespace objects used as namespace.func()
• Added compile-time diagnostics for:
  • file not found
  • missing main.rey in module folder
  • function not found
  • function exists but is pub (not export pub)
  • circular imports (cycle shown)
  • duplicate imports
• Added import fixtures in tests/imports for success and error scenarios.

Why

Rey needed a deterministic import model with explicit export visibility and clear compile-time diagnostics for modular programs.

Verification

• cargo build passes
• cargo test passes