feat: compare limit 9, format-aware import placeholder, help links

- Raise compare limit from 8 to 9 (server + client, toast on overflow)
- Make import textarea placeholder match selected format (CSV/JSON/YAML/auto)
- Add GuideHelp links to admin create/edit user dialogs and tool import dialog

docs/releases/v0.9.1/handbook/getting-started.en.md

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+
+# Getting Started
+
+This page guides you through the most important workflows in toolr — from your
+first visit to creating and rating a tool.
+
+## 1. Sign in
+
+Most actions (create a tool, rate, watchlist, compare) require
+an account. Click **Sign in** in the bottom left corner. Depending on the
+instance configuration you have two options:
+
+- **Local accounts:** username + password. Access is created by an admin
+  (see [Administration](/docs/handbook/administration)).
+- **OIDC (SSO):** sign in with the configured identity provider (e.g.
+  Keycloak).
+
+Which mode is active is shown by the
+[`GET /auth/mode`](/docs/reference/endpoints/auth#getAuthMode) endpoint. Details
+can be found in the [Sign in & account](/docs/handbook/konto) section.
+
+## 2. Find tools
+
+Open the **Browse tools** section:
+
+- **Search** — full-text search across name & description (shortcut `/`).
+- **Filter** — by category, tags, features and minimum rating
+  (`minRating`).
+- **Sort** — by newest, top-rated, most rated, name
+  (ascending/descending) or last update.
+
+All options in detail: [Find & browse tools](/docs/handbook/tools-finden).
+
+## 3. Create a tool
+
+Go to **Add tool** and fill in the form. Details for each field can be found
+in the [Create a tool](/docs/handbook/tool-anlegen) section and in the
+[field reference](/docs/reference/schemas/toolinput).
+
+## 4. Rate
+
+On the detail page of a tool you can submit **usefulness** and **usability**
+(1–5 each) and optionally leave a comment. Your
+rating is immediately reflected in the statistics.
+See [Rating](/docs/handbook/bewerten).
+
+## 5. Further reading
+
+- [Compare tools](/docs/handbook/vergleichen)
+- [Watchlist](/docs/handbook/watchlist)
+- [Analytics](/docs/handbook/analytics)
+- [Plans & permissions](/docs/handbook/plaene)
+- [Administration](/docs/handbook/administration)