jif-oai e6c8371e4e refactor: centralize tool exposure planning (#23876) ...

## Why

Tool exposure is a planning concern, but the deferred MCP path and
dispatch-only legacy shell path were carrying those decisions in handler
constructors and a shell-only tool-family builder. Keeping those
decisions in `spec_plan` makes the core tool plan easier to follow and
keeps handlers focused on runtime behavior.

## What changed

- add `PlannedTools` helpers for ordinary runtimes, exposure overrides,
dispatch-only runtimes, and hosted specs
- inline shell tool assembly into `core/src/tools/spec_plan.rs` and
remove the shell-only `tool_family` module
- remove exposure state and special exposure constructors from
`McpHandler` and `ShellCommandHandler`
- keep hidden runtime behavior centralized in `ExposureOverride`,
including disabling parallel tool calls for hidden handlers

## Testing

- Not run (refactor only)

2026-05-21 16:21:23 +02:00

..

shell_command.rs

refactor: centralize tool exposure planning (#23876)

2026-05-21 16:21:23 +02:00