chore(release): prepare 0.9.0 webhook release

Author: moonyue-w

CHANGELOG.md

@@ -5,12 +5,13 @@ existing `0.1.0` release; earlier development prereleases are not listed.
 
 ## [Unreleased]
 
+## [0.9.0] - 2026-10-26
+
 ### Added
 
 - Add Forward Webhook endpoint creation, listing, retrieval, partial update, deletion, enable/disable and synthetic test delivery.
 - Add raw-body webhook signature verification with HMAC-SHA256, multiple v1 signatures and a 300-second timestamp window; include receiver examples and offline contracts.
 
-
 ## [0.8.0]
 
 ### Fixed

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "qca-sdk"
-version = "0.8.0"
+version = "0.9.0"
 description = "Typed synchronous and asynchronous clients for Qoder Cloud Agents"
 authors = [{name = "Qoder"}]
 license = "MIT"