Echo 2026

Layout

Numbered roots and sidecar expectation files under echo26/.

Paths

Under echo26/<area>/<feature>/. Numbered NNN_*.echo files are suite roots; other .echo files are imports only.

NNN_slug.echo     # source
NNN_slug.lex      # token kinds (required)
NNN_slug.ast      # AST kinds (required)
NNN_slug.diag     # optional lex diags
NNN_slug.check    # optional sem-* diags
NNN_slug.run      # optional stdout
NNN_slug.runexit  # optional exit code

Areas

leaders, parse, check, multi, run, lits, infer, effect.

Spec suite map: /e26/spec (Executable contract). Protocol: /e26/protocol. Run: /e26/run.