# G-077 punk executable -e one-liner support: make the tclsh-agent instinct work

Status: proposed
Scope: src/vfs/_config/punk_main.tcl (top-level arg dispatch), src/lib/app-punkscript/punkscript.tcl (script subcommand arg forms), src/tests/shell/testsuites/punkexe/scriptexec.test
Goal: `<punkexe> -e <script> ?args...?` and `<punkexe> script -e <script> ?args...?` execute the given Tcl code as a one-liner (args after the script land in `::argv`, `::argv0` = `-e`, non-interactive), so the -e reflex agents carry over from perl/python/node works on punk kits instead of erroring - while stock-tclsh misparse behaviour (argv-swallow + stdin read) is never reproduced.
Acceptance: `punksys -e {puts hi}` and `punk902z script -e {puts hi}` print hi and exit 0 with and without piped stdin present (the one-liner may itself read stdin); a -e with no following script argument is a usage error, never an interactive fall-through; error in the one-liner prints errorInfo to stderr and exits 1 (matching the script subcommand's file form); scriptexec.test covers the above against the built executable.

## Context

Agents and harnesses habitually try `tclsh -e "script"` (the one-liner reflex from perl/python/node).
Stock tclsh has no such flag: only `-encoding name` is recognised, and any other leading-dash
argument is not treated as a script file - all arguments land in `$argv` and tclsh reads commands
from stdin instead (hangs at an interactive prompt on a console; silently ignores the supposed
one-liner when stdin is piped). Root `AGENTS.md` User Preferences documents the pitfall and a
claude-harness PreToolUse hook (`.claude/settings.json`) denies such invocations with corrective
guidance.

The punk kits currently fail fast instead (`punk script: script file not found: '-e'`) but offer
no one-liner form. This goal makes the instinct work on punk executables, removing the failure
class for the kits entirely. app-punkscript's existing stdin form already provides the execution
scaffolding (argv0/argv setup, errorInfo-to-stderr, exit-code discipline).