fix(db): bump sqlx to 0.9, honour no-transaction

sqlx-sqlite 0.8 ignored Migration.no_tx and wrapped every
migration in a transaction, where PRAGMA foreign_keys = OFF
is a no-op — so any table rebuild cascade-deleted children.
0.9 honours `-- no-transaction`, so 0014 drops its
movie_releases_backup / episode_releases_backup workaround
and runs the plain rebuild recipe with foreign keys off.
A migration test rebuilds both parents from a pre-0014
database and asserts the child link rows survive.

Closes #155

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.sqlx/query-a071c1bedfdd1347713cac523cb1aa9522dc9a07fb5d681655622971398a0ff4.json

@@ -6,22 +6,46 @@
       {
         "name": "series_id!: i64",
         "ordinal": 0,
-        "type_info": "Integer"
+        "type_info": "Integer",
+        "origin": {
+          "Table": {
+            "table": "series",
+            "name": "id"
+          }
+        }
       },
       {
         "name": "title!: String",
         "ordinal": 1,
-        "type_info": "Text"
+        "type_info": "Text",
+        "origin": {
+          "Table": {
+            "table": "series",
+            "name": "title"
+          }
+        }
       },
       {
         "name": "year",
         "ordinal": 2,
-        "type_info": "Integer"
+        "type_info": "Integer",
+        "origin": {
+          "Table": {
+            "table": "series",
+            "name": "year"
+          }
+        }
       },
       {
         "name": "episode_id!: i64",
         "ordinal": 3,
-        "type_info": "Integer"
+        "type_info": "Integer",
+        "origin": {
+          "Table": {
+            "table": "episodes",
+            "name": "id"
+          }
+        }
       }
     ],
     "parameters": {
@@ -31,7 +55,7 @@
       false,
       false,
       true,
-      true
+      false
     ]
   },
   "hash": "a071c1bedfdd1347713cac523cb1aa9522dc9a07fb5d681655622971398a0ff4"