feat(gateway): deprecate query param hook token auth for security (#2200)

* feat(gateway): deprecate query param hook token auth for security

Query parameter tokens appear in:
- Server access logs
- Browser history
- Referrer headers
- Network monitoring tools

This change adds a deprecation warning when tokens are provided via
query parameter, encouraging migration to header-based authentication
(Authorization: Bearer <token> or X-Clawdbot-Token header).

Changes:
- Modified extractHookToken to return { token, fromQuery } object
- Added deprecation warning in server-http.ts when fromQuery is true
- Updated tests to verify the new return type and fromQuery flag

Fixes #2148

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: deprecate hook query token auth (#2200) (thanks @YuriNachos)

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Peter Steinberger <steipete@gmail.com>

CHANGELOG.md

@@ -6,6 +6,7 @@ Docs: https://docs.clawd.bot
 Status: unreleased.
 
 ### Changes
+- Gateway: warn on hook tokens via query params; document header auth preference. (#2200) Thanks @YuriNachos.
 - Doctor: warn on gateway exposure without auth. (#2016) Thanks @Alex-Alaniz.
 - Docs: add Vercel AI Gateway to providers sidebar. (#1901) Thanks @jerilynzheng.
 - Agents: expand cron tool description with full schema docs. (#1988) Thanks @tomascupr.