docs: add Zed and Rust Rover install stub pages

Author: nikomatsakis

md/SUMMARY.md

@@ -18,6 +18,8 @@
 
 - [How to install](./install.md)
     - [VSCode](./install-vscode.md)
+    - [Zed](./install-zed.md)
+    - [Rust Rover](./install-rust-rover.md)
     - [Other editors](./install-other.md)
 - [Using Symposium](./using/symposium.md)
 - [Built-in mods](./using/mods.md)

md/install-rust-rover.md

@@ -0,0 +1,5 @@
+# Rust Rover
+
+Rust Rover and other JetBrains IDEs support ACP. Symposium integration is coming soon.
+
+In the meantime, see [Other editors](./install-other.md) for manual installation instructions, or refer to [JetBrains ACP documentation](https://www.jetbrains.com/help/ai-assistant/acp.html).

md/install-zed.md

@@ -0,0 +1,5 @@
+# Zed
+
+Zed has native ACP support. Symposium integration is coming soon.
+
+In the meantime, see [Other editors](./install-other.md) for manual installation instructions.

md/install.md

@@ -10,13 +10,13 @@
     </a>
   </li>
   <li>
-    <a href="./install-other.md">
+    <a href="./install-zed.md">
       <img src="./artwork/logos/zed.png" alt="Zed"/>
       <span class="editor-name">Zed</span>
     </a>
   </li>
   <li>
-    <a href="./install-other.md">
+    <a href="./install-rust-rover.md">
       <img src="./artwork/logos/rustrover.png" alt="RustRover"/>
       <span class="editor-name">RustRover</span>
     </a>