[azure-ai-agentserver-agentframework] Dependency conflict with agent-framework-core 1.0.1 GA

## Description

The `azure-ai-agentserver-agentframework` package (v1.0.0b17, released 2026-03-16) pins its dependencies to pre-release versions of `agent-framework`, making it incompatible with the GA 1.0.1 release (published 2026-04-10).

**Cross-reference:** microsoft/agent-framework#5273

## Dependency Conflict

`azure-ai-agentserver-agentframework==1.0.0b17` requires:
- `agent-framework-core<=1.0.0rc3,>=1.0.0rc2`
- `agent-framework-azure-ai<=1.0.0rc3,>=1.0.0rc2`

The GA release changed:
- `agent-framework-core` → **1.0.1** (outside the `<=1.0.0rc3` upper bound)
- `agent-framework-azure-ai` → **renamed** to `agent-framework-foundry==1.0.1`

## Reproduction

```
# requirements.txt
agent-framework-core==1.0.1
agent-framework-foundry==1.0.1
azure-ai-agentserver-agentframework==1.0.0b17
azure-ai-agentserver-core==1.0.0b17
azure-identity>=1.19.0
```

```bash
pip install -r requirements.txt
```

### Error

```
ERROR: Cannot install agent-framework-core==1.0.1 and
azure-ai-agentserver-agentframework==1.0.0b17 because these package versions
have conflicting dependencies.

The conflict is caused by:
The user requested agent-framework-core==1.0.1
agent-framework-foundry 1.0.1 depends on agent-framework-core<2 and >=1.0.1
azure-ai-agentserver-agentframework 1.0.0b17 depends on agent-framework-core<=1.0.0rc3 and >=1.0.0rc2

ERROR: ResolutionImpossible
```

## Impact

Anyone deploying hosted agents to Microsoft Foundry Agent Service (via `azd up` / `azd deploy` or the `from_agent_framework(agent).run()` pattern) **cannot upgrade** to the Agent Framework GA release. This blocks:

- Adoption of `agent-framework-foundry` (`FoundryChatClient`, the replacement for `AzureAIAgentClient`)
- `agent-framework-core>=1.0.1` GA features
- Updated env var conventions (`FOUNDRY_PROJECT_ENDPOINT`, `FOUNDRY_MODEL`)

## Expected Fix

A new release of `azure-ai-agentserver-agentframework` that:
1. Updates the `agent-framework-core` constraint to `>=1.0.1,<2`
2. Replaces the `agent-framework-azure-ai` dependency with `agent-framework-foundry>=1.0.1,<2`
3. Updates any internal imports from `agent_framework.azure` to `agent_framework_foundry`

The same changes likely apply to `azure-ai-agentserver-core` if it has similar pinned constraints.

## Workaround

Stay on pre-release versions:

```
agent-framework-core==1.0.0rc3
agent-framework-azure-ai==1.0.0rc3
azure-ai-agentserver-agentframework==1.0.0b17
azure-ai-agentserver-core==1.0.0b17
```

## Environment

- OS: Windows 11
- Python: 3.13
- azure-ai-agentserver-agentframework: 1.0.0b17 (latest on PyPI)
- agent-framework-core: 1.0.1 (GA target)
- azd: latest with `azure.ai.agents` extension v0.1.22-preview