Address review finding from #4423: the compatibility facade claimed to
preserve every original top-level symbol but omitted three helpers the
old src.tool_implementations exposed. Re-export them and pin them in
the shim protection test:
- _string_arg, _validate_cookbook_ssh_target <- src/tools/cookbook.py
- _mcp_allowed_commands <- src/agent_tools/admin_tools.py (lazily via
__getattr__, to keep the agent_tools.__init__ <-> facade import acyclic
after the #3629 admin-tools migration)
All three added to tests/test_tool_implementations_shim.py _EXPECTED so
the test contract now matches its "every original top-level function"
comment.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Covers all 48 top-level functions (33 do_* + 15 _helpers) extracted from
the original module. Guards the upcoming split: the shim must re-export
every symbol so existing 'from src.tool_implementations import X' imports
keep working. Passes on baseline (pre-split).
yuandonghao