fix(daemon): use canonical movie states in import

PRs #82 and #85 were each green pre-merge; #85 renamed movie states
(grabbed->downloading, imported->available) and #82's import path
still wrote the old names, so main failed the movies CHECK constraint.

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

.sqlx/query-93d05b3370c722a59239b486f5ca68123fb59610ba8ab8e8f6c1a1189610e377.json

@@ -1,12 +0,0 @@
-{
-  "db_name": "SQLite",
-  "query": "UPDATE movies\n         SET    state = 'imported',\n                updated_at = strftime('%Y-%m-%dT%H:%M:%fZ', 'now')\n         WHERE  id = ?",
-  "describe": {
-    "columns": [],
-    "parameters": {
-      "Right": 1
-    },
-    "nullable": []
-  },
-  "hash": "93d05b3370c722a59239b486f5ca68123fb59610ba8ab8e8f6c1a1189610e377"
-}

.sqlx/query-c17e4da86245ae665fc2326f0939eacba63e1e3e7f3bb39e38beee5a170c6984.json

@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "UPDATE movies\n         SET    state = 'available',\n                updated_at = strftime('%Y-%m-%dT%H:%M:%fZ', 'now')\n         WHERE  id = ?",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": []
+  },
+  "hash": "c17e4da86245ae665fc2326f0939eacba63e1e3e7f3bb39e38beee5a170c6984"
+}