docs: add missing pre flag (#1130)

Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

python/packages/a2a/README.md

@@ -3,7 +3,7 @@
 Please install this package via pip:
 
 ```bash
-pip install agent-framework-a2a
+pip install agent-framework-a2a --pre
 ```
 
 ## A2A Agent Integration
@@ -18,4 +18,3 @@ See the [A2A agent examples](https://github.com/microsoft/agent-framework/tree/m
 - Sending messages and receiving responses
 - Handling different content types (text, files, data)
 - Streaming responses and real-time interaction
-

python/packages/azure-ai/README.md

@@ -3,7 +3,7 @@
 Please install this package via pip:
 
 ```bash
-pip install agent-framework-azure-ai
+pip install agent-framework-azure-ai --pre
 ```
 
 and see the [README](https://github.com/microsoft/agent-framework/tree/main/python/README.md) for more information.

python/packages/copilotstudio/README.md

@@ -3,7 +3,7 @@
 Please install this package via pip:
 
 ```bash
-pip install agent-framework-copilotstudio
+pip install agent-framework-copilotstudio --pre
 ```
 
 ## Copilot Studio Agent

python/packages/core/README.md

@@ -13,9 +13,9 @@ Highlights
 ## Quick Install
 
 ```bash
-pip install agent-framework-core
+pip install agent-framework-core --pre
 # Optional: Add Azure AI integration
-pip install agent-framework-azure-ai
+pip install agent-framework-azure-ai --pre
 ```
 
 Supported Platforms:

python/packages/core/agent_framework/_workflows/README.md

@@ -3,13 +3,13 @@
 Workflow capabilities ship with the core `agent-framework` package.
 
 ```bash
-pip install agent-framework
+pip install agent-framework --pre
 ```
 
 Optional visualization support is still available via the `viz` extra:
 
 ```bash
-pip install agent-framework[viz]
+pip install agent-framework[viz] --pre
 ```
 
 See the [project README](https://github.com/microsoft/agent-framework/tree/main/python/README.md) for more information.

python/packages/core/agent_framework/_workflows/_viz.py

@@ -80,7 +80,7 @@ class WorkflowViz:
             import graphviz  # type: ignore
         except ImportError as e:
             raise ImportError(
-                "viz extra is required for export. Install it with: pip install agent-framework[viz]. "
+                "viz extra is required for export. Install it with: pip install agent-framework[viz] --pre. "
                 "You also need to install graphviz separately. E.g., sudo apt-get install graphviz on Debian/Ubuntu "
                 "or brew install graphviz on macOS. See https://graphviz.org/download/ for details."
             ) from e

python/packages/devui/README.md

@@ -11,7 +11,7 @@ A lightweight, standalone sample app interface for running entities (agents/work
 
 ```bash
 # Install
-pip install agent-framework-devui
+pip install agent-framework-devui --pre
 ```
 
 You can also launch it programmatically

python/packages/mem0/README.md

@@ -3,7 +3,7 @@
 Please install this package via pip:
 
 ```bash
-pip install agent-framework-mem0
+pip install agent-framework-mem0 --pre
 ```
 
 ## Memory Context Provider
@@ -18,4 +18,3 @@ See the [Mem0 basic example](https://github.com/microsoft/agent-framework/tree/m
 - Teaching the agent user preferences
 - Retrieving information using remembered context across new threads
 - Persistent memory
-

python/packages/redis/README.md

@@ -3,7 +3,7 @@
 Please install this package via pip:
 
 ```bash
-pip install agent-framework-redis
+pip install agent-framework-redis --pre
 ```
 
 ## Components