From 400e30a2789bae761a7bd6c19cd8ca07d6073a18 Mon Sep 17 00:00:00 2001
From: Timothy <timothy.look@gmail.com>
Date: Mon, 27 Jul 2026 08:03:18 +0200
Subject: [PATCH] docs: record the Decisions-Edit trailer for the
 parallel-session-claim rationale

The previous commit rewrote the rationale prose of process.parallel-session-claim (adding the
ersatztv#649 double-implementation incident) without this trailer, and CI's decisions-lifecycle
gate correctly rejected it.

Worth recording WHY it passed locally and failed in CI: I ran decisions_validate.py BEFORE
`git commit` in the same command chain, so it inspected the working tree. The trailer check reads
COMMITTED history, so the one rule that can only fail after committing was the one I validated
before committing. Run the decisions validator after the commit, not before it.

Decisions-Edit: yes