chore(migrations): 合并 ephemeral cache 迁移到 20260423000000，移除冗余迁移文件并同步 baseline cutoff

crates/aether-data/migrations/20260423000000_fix_provider_api_key_api_formats_nullable.sql

@@ -32,3 +32,7 @@ WHERE p.id = pak.provider_id
       )
     )
   );
+
+ALTER TABLE public.stats_daily_model
+    ADD COLUMN IF NOT EXISTS cache_creation_ephemeral_5m_tokens bigint DEFAULT '0'::bigint NOT NULL,
+    ADD COLUMN IF NOT EXISTS cache_creation_ephemeral_1h_tokens bigint DEFAULT '0'::bigint NOT NULL;

crates/aether-data/migrations/20260423010000_add_ephemeral_cache_to_stats_daily_model.sql

@@ -1,3 +0,0 @@
-ALTER TABLE public.stats_daily_model
-    ADD COLUMN IF NOT EXISTS cache_creation_ephemeral_5m_tokens bigint DEFAULT '0'::bigint NOT NULL,
-    ADD COLUMN IF NOT EXISTS cache_creation_ephemeral_1h_tokens bigint DEFAULT '0'::bigint NOT NULL;

crates/aether-data/src/migrate.rs

@@ -8,7 +8,7 @@ use tracing::{error, info, warn};
 
 static MIGRATOR: Migrator = sqlx::migrate!("./migrations");
 static BASELINE_V2_SQL: &str = include_str!("../bootstrap/20260413020000_baseline_v2.sql");
-const BASELINE_V2_CUTOFF_VERSION: i64 = 20260423010000;
+const BASELINE_V2_CUTOFF_VERSION: i64 = 20260423000000;
 const MIGRATIONS_TABLE_EXISTS_SQL: &str =
     "SELECT to_regclass('public._sqlx_migrations') IS NOT NULL";
 const PUBLIC_BASE_TABLE_COUNT_SQL: &str = r#"
@@ -663,7 +663,6 @@ SELECT EXISTS (
                 20260422110000,
                 20260422120000,
                 20260423000000,
-                20260423010000,
             ]
         );
     }
@@ -811,7 +810,6 @@ SELECT EXISTS (
                 20260422110000,
                 20260422120000,
                 20260423000000,
-                20260423010000,
             ]
         );
     }