Module hooks 

Extension hooks (M5). The engine consults a Hooks impl at two points in the tool phase — before a call runs and after it returns — scoped to the events actually used, not a 35-event schema (Delivery #5).

Vocabulary follows 0006’s M5 pin #2: a wrap-style PreToolUse hook intercepts a call (allow / block / transiently rewrite its input); a node-style PostToolUse hook returns a proposal to replace the result. Hook-visible payloads are byte-capped (pin #1) so a hook can’t be used to amplify a huge tool result into the process.

Structs

InProcessHooks

Lane 1 — in-process Rust hooks: the compiled-in registry that the shell adapter (lane 2) and any future third-party lane register against.

Enums

PreToolDecision

A PreToolUse decision (wrap-style intercept). A Rewrite re-enters the normal permission gate with the new input — a hook cannot launder a call past the y/N ask (SECURITY.md §M5 routing rows).

Constants

HOOK_PAYLOAD_CAP

Default cap on the bytes of a tool result a hook is shown.

Traits

Hooks

Functions

cap_payload

Clip a payload to the hook cap on a char boundary (never mid-UTF-8).