docs(mission-control): add install section before chapter 1

Mirror of the framework-repo edit. The Mission Control walkthrough
jumped straight into Chapter 1's service code without telling readers
how to install anything first. QA agents working through the guide
had to figure it out themselves.

Added a tabbed Install section between the architecture diagram and
Chapter 1, covering Python (uv pip / pip + aster-rpc + aster-cli) and
TypeScript (bun/npm add @aster-rpc/aster + uv tool install aster-cli).
The TypeScript path is honest about needing Python for the shared CLI
tools -- "one-time install, day-to-day work stays in TypeScript" -- so
TS readers don't feel ambushed.

Author: emrul

docs/quickstart/mission-control.mdx

@@ -101,6 +101,53 @@ graph LR
 
 ---
 
+## Install
+
+<LanguageTabs defaultValue="python">
+<TabItem value="python" label="Python">
+
+Two packages -- the framework and the CLI:
+
+```bash
+uv pip install aster-rpc aster-cli
+# or:
+pip install aster-rpc aster-cli
+```
+
+The framework gives you `from aster import ...` for your service code. The CLI gives you `aster shell`, `aster trust keygen`, `aster enroll node`, and `aster contract gen-client` -- the operator tools you'll use throughout this guide.
+
+**Requirements:** Python 3.9 -- 3.13, macOS / Linux / Windows.
+
+</TabItem>
+<TabItem value="typescript" label="TypeScript">
+
+Two pieces -- the TypeScript runtime and the CLI tools:
+
+```bash
+# In your TypeScript project:
+bun add @aster-rpc/aster
+# or: npm install @aster-rpc/aster
+
+# The CLI ships as a Python package and is shared across all language
+# bindings -- one shell, one trust manager, one contract generator,
+# usable against any Aster server regardless of language:
+uv tool install aster-cli
+# or: pip install aster-cli
+```
+
+**Requirements:** Node.js 20+ or Bun 1.0+ for the TypeScript runtime. Python 3.9 -- 3.13 for the CLI (one-time install; day-to-day work stays in TypeScript).
+
+</TabItem>
+</LanguageTabs>
+
+Verify:
+
+```bash
+aster --version
+```
+
+---
+
 ## Chapter 1: Your First Agent Check-In (5 min)
 
 **Goal:** The full working version of what you just saw — define a service,