49377f768c
Found by extending the edge-case suite to the baked-shim path (E17-E19) after a
sync reported 'ready' but silently dropped a module's Redox shim:
- git show used an ABSOLUTE recipe path ('HEAD:/mnt/.../source/f') which git
rejects (needs repo-relative) -> empty content -> garbage delta. Now uses
${dir#$ROOT/}.
- diff|patch under 'set -o pipefail': diff exits 1 whenever files differ (always
here), so the pipeline looked failed even when patch succeeded -> EVERY shim
false-rejected. Now captures the delta to a file and checks patch's own exit.
- a shim whose file was renamed/removed upstream, or unreadable from HEAD, was
silently skipped. Now: Redox-added files are carried in verbatim; a missing
target or unreadable HEAD file -> SHIM-REJECT (manual), never a silent drop.
Also: old-version URL derivation now rewrites the major.minor dir component too
(KDE mirrors nest tarballs under .../6.28/foo-6.28.0). CI branch glob widened to
[0-9]* so 0.4.0/0.5.0 release branches keep triggering.