fix(db): validate cached project connections

app/native/wndb/database.py

@@ -1,6 +1,6 @@
 from typing import Any
 from psycopg.rows import dict_row, Row
-from .connection import g_conn_dict as conn
+from .connection import project_connection
 
 API_ADD = 'add'
 API_UPDATE = 'update'
@@ -83,29 +83,33 @@ class DbChangeSet:
 
 
 def read(name: str, sql: str) -> Row:
-    with conn[name].cursor(row_factory=dict_row) as cur:
-        cur.execute(sql)
-        row = cur.fetchone()
-        if row == None:
-            raise Exception(sql)
-        return row
+    with project_connection(name) as conn:
+        with conn.cursor(row_factory=dict_row) as cur:
+            cur.execute(sql)
+            row = cur.fetchone()
+            if row == None:
+                raise Exception(sql)
+            return row
 
 
 def read_all(name: str, sql: str) -> list[Row]:
-    with conn[name].cursor(row_factory=dict_row) as cur:
-        cur.execute(sql)
-        return cur.fetchall()
+    with project_connection(name) as conn:
+        with conn.cursor(row_factory=dict_row) as cur:
+            cur.execute(sql)
+            return cur.fetchall()
 
 
 def try_read(name: str, sql: str) -> Row | None:
-    with conn[name].cursor(row_factory=dict_row) as cur:
-        cur.execute(sql)
-        return cur.fetchone()
+    with project_connection(name) as conn:
+        with conn.cursor(row_factory=dict_row) as cur:
+            cur.execute(sql)
+            return cur.fetchone()
 
 
 def write(name: str, sql: str) -> None:
-    with conn[name].cursor() as cur:
-        cur.execute(sql)
+    with project_connection(name) as conn:
+        with conn.cursor() as cur:
+            cur.execute(sql)
 
 
 def get_current_operation(name: str) -> int: