Refactor documentation and add new features

- Updated index.md to simplify structure and focus on task-oriented guides.
- Revised notifications.md to streamline setup instructions and improve clarity.
- Added report-error.js for structured error reporting to Discord.
- Introduced account-creation.md and configuration.md for detailed guidance on account setup and bot configuration.
- Created dashboard.md, docker.md, error-reporting.md, modes.md, running.md, scheduling.md, setup.md, troubleshooting.md, and update.md for comprehensive documentation on respective features and usage.
- Updated package-lock.json and package.json to include peer dependencies.

docs/error-reporting.md

@@ -0,0 +1,16 @@
+# Error Reporting API
+
+## What it does
+Accepts structured error reports and forwards them to Discord in a clean format.
+
+## How to use
+- Set `DISCORD_WEBHOOK_URL` in your environment.
+- Send a POST request to `/api/report-error` with JSON that includes at least `error`.
+- Optional fields: `summary`, `type`, `metadata` (object), `environment` (string or object with `name`).
+
+## Example
+```bash
+curl -X POST https://your-deployment.vercel.app/api/report-error \
+  -H "Content-Type: application/json" \
+  -d '{"error":"Search job failed","type":"search","metadata":{"account":"user@contoso.com"}}'
+```