gitea_publish_unpublished_issue_branch accepted a required worktree_path
but resolved it only after verify_preflight_purity had already run, so the
#618 branches-only guard and every other workspace-resolution layer behind
preflight received None and fell back to the MCP process root. A daemon
rooted at the stable control checkout therefore refused a valid registered
issue worktree the caller had explicitly supplied, before the publication
assessor could use it — the sole verify_preflight_purity call site that
accepted a worktree argument and dropped it.
Resolve the workspace once, before preflight, and forward it. A blank or
absent path forwards None and keeps the ordinary #618 fail-closed fallback,
so guard strictness is unchanged for missing, empty, unregistered, foreign,
or control-checkout worktrees. Public tool contract, ownership, cleanliness,
hash, ancestry, and read-after-write protections from PR #814 are untouched.
Adds tests/test_issue_815_preflight_worktree_forwarding.py: a #735-style
capture proving the argument reaches verify_preflight_purity, a faithful
production reproduction (control-rooted daemon, no session lock, explicit
worktree) that clears #618 on the fixed source and is trapped at #618 on the
unpatched source, an end-to-end control-rooted publication in the real
topology (PROJECT_ROOT is the stable control checkout, the issue worktree is
a distinct registered path, production guards forced on), and negative
coverage keeping every #618 and assessor refusal intact. The prior #812
suite masked the defect by patching PROJECT_ROOT to equal the issue worktree.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
