feat(placements): v0.11 P5 learner placement visibility (REQ-11-005) [2/10] — wave 5-1: get_application_by_posting_learner mine point-read (G-322)

apps/ai-service/ai_service/marketplace/store.py

@@ -353,6 +353,16 @@ class MarketplaceStore(Protocol):
         shape)."""
         ...
 
+    def get_application_by_posting_learner(
+        self, posting_id: str, learner_id: str
+    ) -> Application | None:
+        """v0.11 P5 (G-322, binding): the mine point-read over the
+        (posting_id, learner_id) unique key — the status panel's
+        application DISCOVERY on revisit; None = no application (the
+        surface renders the apply CTA — never client-persisted
+        application_ids)."""
+        ...
+
     def list_applications_by_postings(
         self, posting_ids: list[str], status: str | None = None
     ) -> list[Application]:
@@ -926,6 +936,24 @@ class SQLiteMarketplaceStore:
             session.refresh(row)
             return row.to_application()
 
+    def get_application_by_posting_learner(
+        self, posting_id: str, learner_id: str
+    ) -> Application | None:
+        """v0.11 P5 (G-322): the mine point-read — one row over the
+        insert_application unique key (the get_posting point-read
+        discipline)."""
+        with Session(self._engine) as session:
+            row = session.exec(
+                select(ApplicationRow).where(
+                    ApplicationRow.posting_id == posting_id,
+                    ApplicationRow.learner_id == learner_id,
+                )
+            ).one_or_none()
+            if row is None:
+                return None
+            session.refresh(row)
+            return row.to_application()
+
     def list_applications_by_postings(
         self, posting_ids: list[str], status: str | None = None
     ) -> list[Application]: