Initial commit: AutoTrader Marker Firefox extension

Mark AutoTrader listings as 'not wanted' on both search results and detail
pages. Includes the unlisted signing / auto-update pipeline (web-ext +
dist/updates.json polled by Firefox).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -0,0 +1,15 @@
+{
+  "name": "autotrader-marker",
+  "version": "0.1.0",
+  "private": true,
+  "description": "Firefox extension that marks AutoTrader listings as 'not wanted'.",
+  "scripts": {
+    "lint": "web-ext lint --source-dir=. --ignore-files=node_modules dist bin package.json package-lock.json README.md .gitignore",
+    "release:patch": "bin/release.sh patch",
+    "release:minor": "bin/release.sh minor",
+    "release:major": "bin/release.sh major"
+  },
+  "devDependencies": {
+    "web-ext": "^8.3.0"
+  }
+}