Rename resolved→done (#1-4, #11), closed→done (#13, #18), open (post-core)→open (#7), mark #9 as superseded by #21.
- #25: $VAR expansion in commands - #26: Shell abbreviations and user-extensible builtins - #27: $(cmd) subcommand syntax - #22: Updated with implementation details (in progress) - #7: Standardize status label
Defines syntax decisions and implementation plan across 7 issues: - backtick command execution returning {code, stdout, stderr} - ${expr} interpolation in backticks - $SIGIL env var read/write - argv parsing, piping, and redirection (future)