* fix(sandbox): resolve git metadata carveouts for worktrees
.git is a file (gitdir: ...) in worktrees/submodules, not a dir. The
hooks/config write-deny carveout assumed a directory and pointed at
<root>/.git/hooks, which has no mkdir-able parent under the .git file.
bwrap then failed 'Can't mkdir parents ... Not a directory', blocking
every sandboxed tool in worktree checkouts.
Resolve the real (common) git dir via the gitdir pointer + commondir so
worktrees deny the shared hooks/config like a plain clone. Plain
checkouts (.git dir) and .git-absent roots keep the literal paths.
* fix(sandbox): bound worktree git metadata carveouts to the write root
Refuse gitdir/commondir pointers that escape the workspace instead of
carving outside confinement. Invalid, stale, or non-directory pointers
return no carveouts so bwrap does not mkdir under a .git file.
* fix(sandbox): evaluate gitdir/commondir through symlinks
Containment must use the real path so an in-root symlink cannot punch
hooks/config carveouts outside the write root.
* fix(sandbox): fail closed on gitdir eval and protect the pointer file
Refuse carveouts when EvalSymlinks cannot produce a real in-root path,
compare evaluated roots and targets, and write-deny the .git pointer so
it cannot redirect hooks/config between commands.
* fix(sandbox): deny worktree-local gitdir metadata and parse first gitdir line
Keep hooks/config write-denied on both the common dir and the in-root
worktree gitdir, emit those paths under the lexical write root, and
accept a gitdir: pointer that has trailing comment lines.
* fix(sandbox): skip special git metadata files and re-check carveouts at apply
Read .git and commondir only when they are regular files so a FIFO cannot
block profile construction. At sandbox apply, drop ReadOnlySubpaths that
no longer sit inside the write root after a symlink swap.
* fix(sandbox): follow directory .git symlinks and unix-tag FIFO tests
A .git symlink to a directory is a normal checkout, so keep lexical
hooks/config carveouts. FIFO coverage stays on unix so Windows still
compiles.
* fix(sandbox): protect worktree git pointer directly
* test(sandbox): skip unavailable symlink fixture
* fix(sandbox): preserve git symlink semantics
* fix(sandbox): limit git pointer carveout to regular files
---------
Co-authored-by: jatmn <[email protected]>
Co-authored-by: jatmn <[email protected]>
