feat(ci-new): preserve dirty changes across CI lock

Store dirty workspace changes in a temporary commit so `git-unlock` can
restore them, with the marker file content (`true`/`false`) recording
which restore path to take.

1 files changed, 10 insertions, 5 deletions

diff --git a/mingling_ci/src/git.rs b/mingling_ci/src/git.rs
index 39f8976..3d1404b 100644
--- a/mingling_ci/src/git.rs
+++ b/mingling_ci/src/git.rs
@@ -3,13 +3,18 @@
 use std::ffi::OsStr;
 use std::process::Command;
 
-/// Marker file created by `git-lock` when the working tree is clean, so that a
-/// temporary commit can always be made; `git-unlock` removes it. Its presence
-/// marks "CI phase in progress".
+/// Marker file created by `git-lock` in the CI temporary commit; its content
+/// is `true` when the tree was dirty (a base TEMP commit exists below) or
+/// `false` when it was clean. `git-unlock` reads it to pick the restore path.
 pub(crate) const LOCK_FILE: &str = "MINGLING-CI-CHECKING";
 
-/// Temporary commit message used by `git-lock`.
-pub(crate) const TEMP_COMMIT_MESSAGE: &str = "[DO NOT PUSH] CI TEMP [DO NOT PUSH]";
+/// First temporary commit: packs the dirty workspace changes so they can be
+/// restored later. Only created when the tree is dirty.
+pub(crate) const TEMP_COMMIT_MESSAGE: &str = "[DO NOT PUSH] TEMP [DO NOT PUSH]";
+
+/// Second temporary commit: carries the marker file, and its message is what
+/// `git-unlock` matches to confirm the CI phase.
+pub(crate) const CI_TEMP_COMMIT_MESSAGE: &str = "[DO NOT PUSH] CI TEMP [DO NOT PUSH]";
 
 /// Case-sensitive substring that identifies a CI temporary commit in the HEAD
 /// commit message.