bin/gstack-worktree-audit: a worktree path with a space is read whole (sed
on the porcelain 'worktree ' line, not awk's second field); a registered
worktree whose directory is gone prints a 'prunable' row instead of being
skipped; 'safe' now requires a clean tree and either merged into the base
or a closed/merged PR with every commit pushed, so unpushed commits or
untracked files on a merged branch read 'review' (the port's rule called
them safe); fork PRs are dropped and an open PR wins over an older closed
one on a reused branch name; GIT_TERMINAL_PROMPT=0 on the base fetch.
bin/gstack-decision-trail: only a leading -h/--help is help, so a '-h'
cell is appended as data; a trail without a final newline, with CRLF rows
or with a repeated header line is appended to correctly; a run id is
limited to [A-Za-z0-9._:@/-] (exit 2) so a tab or quote cannot break the
start-row idempotence check.
Tests cover each case; the 'without gh' test resolves git from
'git --exec-path' instead of a PATH rebuilt from a tool list. Docs,
CHANGELOG and --help text describe the stricter buckets.
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>