Mark completed backlog tasks (#455)

Author: shayancoin

docs/plan/paform-fastapi-extension-v0-1-plan.md

@@ -83,6 +83,11 @@ We have revised the execution sequence to prioritize backend stability, testing,
 
 11. [Infra] Verify `docker-compose` (dev/prod) functionality.
 
+#### Backlog Status Update
+
+- ✅ **Task #2 – Backend Data Modeling:** The SQLAlchemy models and Pydantic schemas are live, so this task is complete and providing the persistence layer expected by the rest of the plan.
+- ✅ **Task #22 – Pricing Flow Coverage:** Consolidated into the existing pricing experience work because the `/api/v1` pricing routes and their frontend clients/tests already cover the intended behavior; no additional backlog work is required.
+
 Proceed immediately with Step 1. Execute flawlessly.#
 
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