fix(test): harden preload cleanup against Windows EBUSY (#14895)

packages/opencode/src/storage/db.ts

@@ -33,6 +33,10 @@ export namespace Database {
 
   type Journal = { sql: string; timestamp: number }[]
 
+  const state = {
+    sqlite: undefined as BunDatabase | undefined,
+  }
+
   function time(tag: string) {
     const match = /^(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/.exec(tag)
     if (!match) return 0
@@ -69,6 +73,7 @@ export namespace Database {
     log.info("opening database", { path: path.join(Global.Path.data, "opencode.db") })
 
     const sqlite = new BunDatabase(path.join(Global.Path.data, "opencode.db"), { create: true })
+    state.sqlite = sqlite
 
     sqlite.run("PRAGMA journal_mode = WAL")
     sqlite.run("PRAGMA synchronous = NORMAL")
@@ -95,6 +100,14 @@ export namespace Database {
     return db
   })
 
+  export function close() {
+    const sqlite = state.sqlite
+    if (!sqlite) return
+    sqlite.close()
+    state.sqlite = undefined
+    Client.reset()
+  }
+
   export type TxOrDb = Transaction | Client
 
   const ctx = Context.create<{