[DOCS] Hooks reference missing `ConfigChange` hook event and input schema

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/hooks

Section/Topic

Hook events lifecycle section and event-specific schema docs.

Current Documentation

The page documents hook events and schemas, for example:

## Hook events Each event corresponds to a point in Claude Code's lifecycle where hooks can run. ### SessionStart ... ### PreCompact ... ### SessionEnd

There is currently no ConfigChange event section.

What's Wrong or Missing?

Claude Code v2.1.49 adds a new ConfigChange hook event, but the hooks reference does not document it.

That leaves hook authors without:

• when ConfigChange fires,
• expected matcher behavior,
• input payload schema,
• decision/output behavior for this event.

Suggested Improvement

Add a ### ConfigChange section in https://code.claude.com/docs/en/hooks that matches the format used for other events:

1. When it fires (configuration files changed during an active session)
2. Matcher semantics (if supported)
3. Input schema with a full JSON example
4. Decision control/output behavior
5. Example use cases for auditing and policy enforcement

Impact

Medium - Makes feature difficult to understand

Additional Context

Affected Pages:

| Page | Line(s) | Context |
|------|---------|---------|
| https://code.claude.com/docs/en/hooks | 551+ | Hook events reference includes event sections but no ConfigChange entry |

Total scope: 1 page affected