step 3.5 complete: chatbot journey endpoint

app/schemas.py

@@ -347,3 +347,22 @@ class AgentRunLogResponse(BaseModel):
     errors: list[str]
     started_at: int
     completed_at: int | None
+
+
+# ── Chatbot Journey ───────────────────────────────────────────────────
+
+class JourneyStartRequest(BaseModel):
+    agent_type: Literal["local", "cloud"]
+    agent_id: str | None = None
+
+
+class JourneyMessageRequest(BaseModel):
+    session_id: str
+    message: str
+
+
+class JourneyResponse(BaseModel):
+    session_id: str
+    message: str
+    done: bool
+    prompt_template: str | None = None