Abhinav 85fc4def35 Add MCP tool handler support to the hooks engine (#38705) ...

## What changed

- Discover synchronous `mcp_tool` hook handlers and invoke their configured MCP server and tool through a supplied executor.
- Expand nested hook-event placeholders in MCP tool inputs while preserving JSON types, and process tool output through the existing hook output contract.
- Represent hook details as handler-specific metadata in `hooks/list`, including MCP server and tool fields, and show those details in the TUI hooks browser.
- Skip unsupported `SessionEnd` MCP hooks and runtimes without MCP invocation support with startup warnings.

## Testing

- Cover argument expansion, missing placeholders, MCP invocation and hook decisions, discovery warnings, `hooks/list` metadata, and TUI rendering.

GitOrigin-RevId: 295b845471fe92bd7ad7cd272fbcd2c3713912e0

2026-08-15 05:53:54 +00:00

..

schema

Add MCP tool handler support to the hooks engine (#38705)

2026-08-15 05:53:54 +00:00

scripts

Precompute app-server protocol exports (#36212)

2026-07-30 19:47:30 +00:00

src

Add MCP tool handler support to the hooks engine (#38705)

2026-08-15 05:53:54 +00:00

BUILD.bazel

Precompute app-server protocol exports (#36212)

2026-07-30 19:47:30 +00:00

Cargo.toml

Extract persisted history types into a dedicated crate (#37871)

2026-08-10 19:26:52 +00:00