Phase 3 (atomic-write) and Phase 4 (validator) used !`...` eager-exec
with unresolved runtime placeholders; the harness executes those at
command LOAD time, so zsh parsed <project-dir> as input redirection and
/trekendsession aborted before the model saw a single instruction.
Both blocks are now plain runtime Bash fences with {curly} placeholders
(shell-inert, trekplan.md convention) and absolute ${CLAUDE_PLUGIN_ROOT}
paths (cwd-relative plugin paths were a latent ERR_MODULE_NOT_FOUND in
any user repo). Phase 1 discovery block keeps its legitimate eager-exec.
Regression guard: new tests/commands/trekendsession.test.mjs flags any
!`-block in commands/*.md containing <angle>/{curly} placeholders, and
pins Phase 3/4 as runtime Bash. Suite 828 -> 832 (830/0/2). E2E: fixed
blocks run with real values write both state files, validator valid:true;
trekcontinue.md:147 runtime-verified self-contained.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013NXzF3F2zAM8S7FCBXCqAb
Kjell Tore Guttormsen
8d39e1d4a5