chore: prepare the 1.3.0 release

Version 1.3.0 (manifest "1.3"): the options page rewrite adds features
without breaking changes, and addons.mozilla.org needs a version above
the live 1.2. The lockfile's root version moves with it. Unreleased
becomes the 1.3.0 section.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file. See [commit-and-tag-version](https://github.com/absolute-version/commit-and-tag-version).
 
-## Unreleased
+## [1.3.0] (2026-10-18)
 
 - Use the extension's bundled icon for the ChatGPT search engine.
 - Rewrite the options page for first-time users: usage instructions with a

manifest.json

@@ -4,7 +4,7 @@
   "manifest_version": 2,
   "author": "Mathew Guest <mat@zavage.net>",
   "homepage_url": "https://zavage-software.com/portfolio/search-with-ChatGPT",
-  "version": "1.2",
+  "version": "1.3",
   "icons": {
     "16": "icons/powered-by-openai-icon-16x16.png",
     "32": "icons/powered-by-openai-icon-32x32.png",

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "search-with-chatgpt-powered-by-openai-extension",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "search-with-chatgpt-powered-by-openai-extension",
-      "version": "1.2.0",
+      "version": "1.3.0",
       "devDependencies": {
         "web-ext": "10.5.0"
       },

package.json

@@ -1,6 +1,6 @@
 {
   "name": "search-with-chatgpt-powered-by-openai-extension",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "private": true,
   "type": "module",
   "description": "Development tooling for the Search with ChatGPT Firefox extension.",