Default to base e2b SDK in READMEs (#1232)

## Summary
- Updated root README, js-sdk README, and python-sdk README to show base
`e2b` SDK install and usage as the default
- Code-interpreter is now shown as an optional step for when
`runCode()`/`run_code()` is actually needed
- SDK links in descriptions now point to base `e2b` packages on npm/PyPI

## Why
The base `e2b` package covers commands, files, git, networking, and
sandbox lifecycle. Users who don't need code execution shouldn't be
directed to install `@e2b/code-interpreter` / `e2b-code-interpreter` as
their first step.

## Test plan
- [ ] Verify README renders correctly on GitHub
- [ ] Confirm base SDK examples use correct import syntax
- [ ] Confirm code-interpreter section still shows correct usage for
`runCode()`

Author: beran-t

README.md

@@ -19,23 +19,20 @@
 <img width="100%" src="/readme-assets/preview.png" alt="Cover image">
 --->
 ## What is E2B?
-[E2B](https://www.e2b.dev/) is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our [JavaScript SDK](https://www.npmjs.com/package/@e2b/code-interpreter) or [Python SDK](https://pypi.org/project/e2b_code_interpreter).
-
-> [!NOTE]
-> This repository contains the core E2B SDK that's used in our main [E2B Code Interpreter SDK](https://github.com/e2b-dev/code-interpreter).
+[E2B](https://www.e2b.dev/) is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our [JavaScript SDK](https://www.npmjs.com/package/e2b) or [Python SDK](https://pypi.org/project/e2b).
 
 ## Run your first Sandbox
 
 ### 1. Install SDK
 
 JavaScript / TypeScript
 ```
-npm i @e2b/code-interpreter
+npm i e2b
 ```
 
 Python
 ```
-pip install e2b-code-interpreter
+pip install e2b
 ```
 
 ### 2. Get your E2B API key
@@ -44,35 +41,49 @@ pip install e2b-code-interpreter
 3. Set environment variable with your API key
 ```
 E2B_API_KEY=e2b_***
-```     
+```
 
-### 3. Execute code with code interpreter inside Sandbox
+### 3. Start a sandbox and run commands
 
 JavaScript / TypeScript
 ```ts
-import { Sandbox } from '@e2b/code-interpreter'
+import Sandbox from 'e2b'
 
 const sandbox = await Sandbox.create()
-await sandbox.runCode('x = 1')
-
-const execution = await sandbox.runCode('x+=1; x')
-console.log(execution.text)  // outputs 2
+const result = await sandbox.commands.run('echo "Hello from E2B!"')
+console.log(result.stdout) // Hello from E2B!
 ```
 
 Python
 ```py
-from e2b_code_interpreter import Sandbox
+from e2b import Sandbox
 
 with Sandbox.create() as sandbox:
-    sandbox.run_code("x = 1")
-    execution = sandbox.run_code("x+=1; x")
-    print(execution.text)  # outputs 2
+    result = sandbox.commands.run('echo "Hello from E2B!"')
+    print(result.stdout)  # Hello from E2B!
+```
+
+### 4. Code execution with Code Interpreter
+
+If you need to execute code with `runCode()`/`run_code()`, install the [Code Interpreter SDK](https://github.com/e2b-dev/code-interpreter):
+
+```
+npm i @e2b/code-interpreter  # JavaScript/TypeScript
+pip install e2b-code-interpreter  # Python
+```
+
+```ts
+import { Sandbox } from '@e2b/code-interpreter'
+
+const sandbox = await Sandbox.create()
+const execution = await sandbox.runCode('x = 1; x += 1; x')
+console.log(execution.text)  // outputs 2
 ```
 
-### 4. Check docs
+### 5. Check docs
 Visit [E2B documentation](https://e2b.dev/docs).
 
-### 5. E2B cookbook
+### 6. E2B cookbook
 Visit our [Cookbook](https://github.com/e2b-dev/e2b-cookbook/tree/main) to get inspired by examples with different LLMs and AI frameworks.
 
 ## Self-hosting

packages/js-sdk/README.md

@@ -13,14 +13,14 @@
 <img width="100%" src="/readme-assets/preview.png" alt="Cover image">
 --->
 ## What is E2B?
-[E2B](https://www.e2b.dev/) is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our [JavaScript SDK](https://www.npmjs.com/package/@e2b/code-interpreter) or [Python SDK](https://pypi.org/project/e2b_code_interpreter).
+[E2B](https://www.e2b.dev/) is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our [JavaScript SDK](https://www.npmjs.com/package/e2b) or [Python SDK](https://pypi.org/project/e2b).
 
 ## Run your first Sandbox
 
 ### 1. Install SDK
 
 ```bash
-npm i @e2b/code-interpreter
+npm i e2b
 ```
 
 ### 2. Get your E2B API key
@@ -29,22 +29,36 @@ npm i @e2b/code-interpreter
 3. Set environment variable with your API key
 ```
 E2B_API_KEY=e2b_***
-```     
+```
 
-### 3. Execute code with code interpreter inside Sandbox
+### 3. Start a sandbox and run commands
 
 ```ts
-import { Sandbox } from '@e2b/code-interpreter'
+import Sandbox from 'e2b'
+
+const sandbox = await Sandbox.create()
+const result = await sandbox.commands.run('echo "Hello from E2B!"')
+console.log(result.stdout) // Hello from E2B!
+```
+
+### 4. Code execution with Code Interpreter
+
+If you need `runCode()`, install the [Code Interpreter SDK](https://github.com/e2b-dev/code-interpreter):
 
-const sbx = await Sandbox.create()
-await sbx.runCode('x = 1')
+```bash
+npm i @e2b/code-interpreter
+```
+
+```ts
+import { Sandbox } from '@e2b/code-interpreter'
 
-const execution = await sbx.runCode('x+=1; x')
+const sandbox = await Sandbox.create()
+const execution = await sandbox.runCode('x = 1; x += 1; x')
 console.log(execution.text)  // outputs 2
 ```
 
-### 4. Check docs
+### 5. Check docs
 Visit [E2B documentation](https://e2b.dev/docs).
 
-### 5. E2B cookbook
+### 6. E2B cookbook
 Visit our [Cookbook](https://github.com/e2b-dev/e2b-cookbook/tree/main) to get inspired by examples with different LLMs and AI frameworks.

packages/python-sdk/README.md

@@ -10,14 +10,14 @@
 
 
 ## What is E2B?
-[E2B](https://www.e2b.dev/) is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our [JavaScript SDK](https://www.npmjs.com/package/@e2b/code-interpreter) or [Python SDK](https://pypi.org/project/e2b_code_interpreter).
+[E2B](https://www.e2b.dev/) is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our [JavaScript SDK](https://www.npmjs.com/package/e2b) or [Python SDK](https://pypi.org/project/e2b).
 
 ## Run your first Sandbox
 
 ### 1. Install SDK
 
 ```
-pip install e2b-code-interpreter
+pip install e2b
 ```
 
 ### 2. Get your E2B API key
@@ -26,21 +26,36 @@ pip install e2b-code-interpreter
 3. Set environment variable with your API key
 ```
 E2B_API_KEY=e2b_***
-```     
+```
 
-### 3. Execute code with code interpreter inside Sandbox
+### 3. Start a sandbox and run commands
+
+```py
+from e2b import Sandbox
+
+with Sandbox.create() as sandbox:
+    result = sandbox.commands.run('echo "Hello from E2B!"')
+    print(result.stdout)  # Hello from E2B!
+```
+
+### 4. Code execution with Code Interpreter
+
+If you need `run_code()`, install the [Code Interpreter SDK](https://github.com/e2b-dev/code-interpreter):
+
+```
+pip install e2b-code-interpreter
+```
 
 ```py
 from e2b_code_interpreter import Sandbox
 
 with Sandbox.create() as sandbox:
-    sandbox.run_code("x = 1")
-    execution = sandbox.run_code("x+=1; x")
+    execution = sandbox.run_code("x = 1; x += 1; x")
     print(execution.text)  # outputs 2
 ```
 
-### 4. Check docs
+### 5. Check docs
 Visit [E2B documentation](https://e2b.dev/docs).
 
-### 5. E2B cookbook
+### 6. E2B cookbook
 Visit our [Cookbook](https://github.com/e2b-dev/e2b-cookbook/tree/main) to get inspired by examples with different LLMs and AI frameworks.