feat(arr): expose the OpenAI endpoint on /settings

Two more fields on the subtitle settings row, validated on write — a base
URL that does not parse is a 422 naming the field — and pushed into the
cell the running backend and the health lamp both read.

.sqlx/query-74356a3425389d243ffdf162f4adbe8ae248e7e58ad8ecf635dcbe6a9d2a0289.json

@@ -1,26 +0,0 @@
-{
-  "db_name": "SQLite",
-  "query": "SELECT remote_command_timeout_seconds AS \"remote_command_timeout_seconds!: i64\"\n           FROM subtitle_settings WHERE id = 1",
-  "describe": {
-    "columns": [
-      {
-        "name": "remote_command_timeout_seconds!: i64",
-        "ordinal": 0,
-        "type_info": "Integer",
-        "origin": {
-          "Table": {
-            "table": "subtitle_settings",
-            "name": "remote_command_timeout_seconds"
-          }
-        }
-      }
-    ],
-    "parameters": {
-      "Right": 0
-    },
-    "nullable": [
-      false
-    ]
-  },
-  "hash": "74356a3425389d243ffdf162f4adbe8ae248e7e58ad8ecf635dcbe6a9d2a0289"
-}

.sqlx/query-7c501e25106ea8d4ad9f28ca904c446551c6afd68d85e2231742bebd215a1a4b.json

@@ -0,0 +1,50 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT remote_command_timeout_seconds AS \"remote_command_timeout_seconds!: i64\",\n                  openai_base_url AS \"openai_base_url: String\",\n                  openai_model    AS \"openai_model: String\"\n           FROM subtitle_settings WHERE id = 1",
+  "describe": {
+    "columns": [
+      {
+        "name": "remote_command_timeout_seconds!: i64",
+        "ordinal": 0,
+        "type_info": "Integer",
+        "origin": {
+          "Table": {
+            "table": "subtitle_settings",
+            "name": "remote_command_timeout_seconds"
+          }
+        }
+      },
+      {
+        "name": "openai_base_url: String",
+        "ordinal": 1,
+        "type_info": "Text",
+        "origin": {
+          "Table": {
+            "table": "subtitle_settings",
+            "name": "openai_base_url"
+          }
+        }
+      },
+      {
+        "name": "openai_model: String",
+        "ordinal": 2,
+        "type_info": "Text",
+        "origin": {
+          "Table": {
+            "table": "subtitle_settings",
+            "name": "openai_model"
+          }
+        }
+      }
+    ],
+    "parameters": {
+      "Right": 0
+    },
+    "nullable": [
+      false,
+      true,
+      true
+    ]
+  },
+  "hash": "7c501e25106ea8d4ad9f28ca904c446551c6afd68d85e2231742bebd215a1a4b"
+}

.sqlx/query-82bb36910db14d5471117285ef2d3a9f8efefc5d400a8f94e1f4aed321284504.json

@@ -1,6 +1,6 @@
 {
   "db_name": "SQLite",
-  "query": "SELECT wanted_languages           AS \"wanted_languages!: String\",\n                  providers_enabled          AS \"providers_enabled!: String\",\n                  translation_engine         AS \"translation_engine: String\",\n                  provider_daily_budgets     AS \"provider_daily_budgets!: String\",\n                  translator_daily_budgets   AS \"translator_daily_budgets!: String\",\n                  remote_command_timeout_seconds AS \"remote_command_timeout_seconds!: i64\"\n           FROM subtitle_settings WHERE id = 1",
+  "query": "SELECT wanted_languages           AS \"wanted_languages!: String\",\n                  providers_enabled          AS \"providers_enabled!: String\",\n                  translation_engine         AS \"translation_engine: String\",\n                  provider_daily_budgets     AS \"provider_daily_budgets!: String\",\n                  translator_daily_budgets   AS \"translator_daily_budgets!: String\",\n                  remote_command_timeout_seconds AS \"remote_command_timeout_seconds!: i64\",\n                  openai_base_url            AS \"openai_base_url: String\",\n                  openai_model              AS \"openai_model: String\"\n           FROM subtitle_settings WHERE id = 1",
   "describe": {
     "columns": [
       {
@@ -68,6 +68,28 @@
             "name": "remote_command_timeout_seconds"
           }
         }
+      },
+      {
+        "name": "openai_base_url: String",
+        "ordinal": 6,
+        "type_info": "Text",
+        "origin": {
+          "Table": {
+            "table": "subtitle_settings",
+            "name": "openai_base_url"
+          }
+        }
+      },
+      {
+        "name": "openai_model: String",
+        "ordinal": 7,
+        "type_info": "Text",
+        "origin": {
+          "Table": {
+            "table": "subtitle_settings",
+            "name": "openai_model"
+          }
+        }
       }
     ],
     "parameters": {
@@ -79,8 +101,10 @@
       true,
       false,
       false,
-      false
+      false,
+      true,
+      true
     ]
   },
-  "hash": "44a954a16f858caf8bc9ff9a3a05a1f10482c9d13e0ffd7b9f92d35bdf9cccdc"
+  "hash": "82bb36910db14d5471117285ef2d3a9f8efefc5d400a8f94e1f4aed321284504"
 }

.sqlx/query-eab2c4e7c21cd5d22a583c36dd2d79590e9ce55801c4b87b8db1b90f7b317225.json

@@ -1,12 +1,12 @@
 {
   "db_name": "SQLite",
-  "query": "UPDATE subtitle_settings SET\n               wanted_languages = ?, providers_enabled = ?, translation_engine = ?,\n               provider_daily_budgets = ?, translator_daily_budgets = ?,\n               remote_command_timeout_seconds = ?,\n               updated_at = strftime('%Y-%m-%dT%H:%M:%fZ', 'now')\n           WHERE id = 1",
+  "query": "UPDATE subtitle_settings SET\n               wanted_languages = ?, providers_enabled = ?, translation_engine = ?,\n               provider_daily_budgets = ?, translator_daily_budgets = ?,\n               remote_command_timeout_seconds = ?,\n               openai_base_url = ?, openai_model = ?,\n               updated_at = strftime('%Y-%m-%dT%H:%M:%fZ', 'now')\n           WHERE id = 1",
   "describe": {
     "columns": [],
     "parameters": {
-      "Right": 6
+      "Right": 8
     },
     "nullable": []
   },
-  "hash": "e4438c9d2ac3ca2bb88922c8cb16a26221efec3b1de7976d8015f61e26118cd1"
+  "hash": "eab2c4e7c21cd5d22a583c36dd2d79590e9ce55801c4b87b8db1b90f7b317225"
 }