Blank Slate's _blank_slate_minimal_toolsets() adds every TOOLSETS entry
to agent.disabled_toolsets except file and terminal. The coding
posture toolset (session-level, selected by agent/coding_context.py)
slips through because the loop only skips hermes-* composites and
includes-only groups.
At runtime, model_tools.get_tool_definitions() resolves coding and
subtracts its tools — terminal, read_file, write_file, patch,
search_files, process — erasing the entire Blank Slate minimal surface.
The agent ends up with only cronjob.
Skip posture toolsets in the disabled-list computation. Posture
toolsets are not user-facing capabilities to disable; they are
per-session selections that should never appear in agent.disabled_toolsets.
Fixes#57315
liuhao1024
b57fe5ca01