a2a-source-edit: write agent.py

agent.py

@@ -28,6 +28,8 @@ from a2a_pack import (
     RunContext,
     State,
     UploadedFile,
+    WorkspaceAccess,
+    WorkspaceMode,
 )
 
 
@@ -43,6 +45,10 @@ class QuoteJudgeStudioV1Config(BaseModel):
     """No caller-provided configuration is required."""
 
 
+class QuoteJudgeState(BaseModel):
+    last_comparison_id: str | None = None
+
+
 class QuoteInput(BaseModel):
     vendor: str = Field(..., min_length=1, max_length=MAX_VENDOR_LEN)
     unit_price: float = Field(..., gt=0, le=1_000_000)
@@ -104,6 +110,13 @@ class QuoteJudgeStudioV1(A2AAgent[QuoteJudgeStudioV1Config, PlatformUserAuth]):
     )
     resources = Resources(cpu="500m", memory="512Mi", max_runtime_seconds=120)
     state = State.DURABLE
+    state_model = QuoteJudgeState
+    workspace_access = WorkspaceAccess.dynamic(
+        max_files=4,
+        allowed_modes=(WorkspaceMode.READ_ONLY,),
+        require_reason=False,
+        max_total_size_bytes=MAX_UPLOAD_BYTES * 4,
+    )
     platform_resources = AgentPlatformResources(
         databases=(
             AgentDatabase(