Python: [Breaking] Remove Python-only declarative actions and rename alias kinds to C# canonical names (#6126)

* Remove Python-only declarative actions and rename alias kinds to C# canonical names

* Address PR comments.

* Address PR comments.

* Reduce verbose and duplicate output from sample workflow.

python/samples/03-workflows/declarative/README.md

@@ -51,19 +51,16 @@ actions:
 ### Variable Actions
 - `SetValue` - Set a variable in state
 - `SetVariable` - Set a variable (.NET style naming)
-- `AppendValue` - Append to a list
 - `ResetVariable` - Clear a variable
 
 ### Control Flow
 - `If` - Conditional branching
-- `Switch` - Multi-way branching
+- `ConditionGroup` - Multi-way branching
 - `Foreach` - Iterate over collections
-- `RepeatUntil` - Loop until condition
 - `GotoAction` - Jump to labeled action
 
 ### Output
 - `SendActivity` - Send text/attachments to user
-- `EmitEvent` - Emit custom events
 
 ### Agent Invocation
 - `InvokeAzureAgent` - Call an Azure AI agent
@@ -74,4 +71,4 @@ actions:
 
 ### Human-in-Loop
 - `Question` - Request user input
-- `WaitForInput` - Pause for external input
+- `RequestExternalInput` - Request external data/approval

python/samples/03-workflows/declarative/agent_to_function_tool/workflow.yaml

@@ -27,6 +27,7 @@ trigger:
       input:
         messages: =Workflow.Inputs.input
       output:
+        autoSend: false
         response: Local.agentResponse
         responseObject: Local.orderData
 
@@ -37,6 +38,7 @@ trigger:
       arguments:
         order_data: =Local.orderData
       output:
+        autoSend: false
         result: Local.orderCalculation
 
     # Invoke another function tool to format the final confirmation
@@ -47,6 +49,7 @@ trigger:
         order_data: =Local.orderData
         order_calculation: =Local.orderCalculation
       output:
+        autoSend: false
         result: Local.confirmation
 
     # Send the final confirmation to the user

python/samples/03-workflows/declarative/conditional_workflow/README.md

@@ -2,7 +2,6 @@
 
 This sample demonstrates control flow with conditions:
 - If/else branching
-- Switch statements
 - Nested conditions
 
 ## Files

python/samples/03-workflows/declarative/human_in_loop/README.md

@@ -1,12 +1,11 @@
 # Human-in-Loop Workflow Sample
 
-This sample demonstrates how to build interactive workflows that request user input during execution using the `Question`, `RequestExternalInput`, and `WaitForInput` actions.
+This sample demonstrates how to build interactive workflows that request user input during execution using the `Question` and `RequestExternalInput` actions.
 
 ## What This Sample Shows
 
 - Using `Question` to prompt for user responses
 - Using `RequestExternalInput` to request external data
-- Using `WaitForInput` to pause and wait for input
 - Processing user responses to drive workflow decisions
 - Interactive conversation patterns