The disabled_toolsets subtraction loop in _compute_tool_definitions
preserved shared core tools only for hermes-* platform bundles (#33924),
subtracting bundle_non_core_tools(); every other name took the else
branch and got a full resolve_toolset() subtraction. The `coding`
toolset is a posture toolset (posture: True) that re-lists the shared
_HERMES_CORE_TOOLS it does not own, so disabled_toolsets=["coding"]
stripped those core tools from the whole schema (34 tools collapsed to a
handful; terminal/read_file/write_file/web_search/execute_code gone).
Extend the core-preserving branch to also match posture toolsets, so
they subtract only the non-core delta. Only `coding` carries
posture: True, so atomic toolsets stay fully removable. The
bundle-misconfiguration info log is gated to hermes-* names, since its
wording is bundle-specific and disabled_toolsets=["coding"] is a
legitimate config written by older `hermes setup` runs.
Adds a regression test (TestDisabledToolsetsPostureToolset) alongside
the existing #33924 bundle tests.
e5636da5d8