feat: Complete code integration of modules (#18)

The complete code integration is done.

Co-authored-by: Sagnik <sagnik7896@gmail.com>
Reviewed-on: #18

backend/tests/oracle/test_persona_service.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+import pytest
+
+from backend.oracle.persona_service import persona_service
+
+
+@pytest.mark.asyncio
+async def test_persona_plan_recommends_templates_for_pipeline_prompt() -> None:
+    plan = await persona_service.plan_for_prompt(
+        prompt="Show me a pipeline map and broker trend view for marina whales",
+        tenant_id="tenant_velocity",
+        actor_role="sales_director",
+    )
+    assert "tpl_pipeline_board_v2" in plan["recommendedTemplates"]
+    assert plan["canvasBlocks"][0]["type"] == "textCanvas"
+
+
+@pytest.mark.asyncio
+async def test_persona_render_uses_existing_prompt_files() -> None:
+    rendered = await persona_service.render_prompt(
+        prompt_name="qd_calculator",
+        variables={"lead_name": "Amina", "query": "Summarize buyer intent"},
+    )
+    assert rendered["promptName"] == "qd_calculator"
+    assert "Amina" in rendered["renderedPrompt"] or rendered["unresolvedVariables"] is not None