fix(opencode): enforce storage path invariants (#29666)

packages/core/src/database/path.ts

@@ -0,0 +1,91 @@
+import nodePath from "path"
+import { customType } from "drizzle-orm/sqlite-core"
+import { AbsolutePath } from "../schema"
+
+function storagePath(input: string) {
+  if (process.platform !== "win32") return input
+  return input.replaceAll("\\", "/")
+}
+
+function isWindowsStoragePath(input: string) {
+  return /^[A-Za-z]:\//.test(input) || input.startsWith("//")
+}
+
+function absolute(input: string) {
+  const result = storagePath(input)
+  if (!nodePath.posix.isAbsolute(result) && !(process.platform === "win32" && isWindowsStoragePath(result))) {
+    throw new Error(`Path is not absolute: ${input}`)
+  }
+  return result
+}
+
+function toPlatform(input: string) {
+  if (process.platform !== "win32" || !isWindowsStoragePath(input)) return input
+  return input.replaceAll("/", "\\")
+}
+
+export const absoluteColumn = customType<{
+  data: AbsolutePath
+  driverData: string
+  driverOutput: string
+}>({
+  dataType() {
+    return "text"
+  },
+  toDriver(input) {
+    return absolute(input)
+  },
+  fromDriver(input) {
+    return AbsolutePath.make(toPlatform(absolute(input)))
+  },
+})
+
+// Legacy sessions may persist an empty directory. Keep that existing value
+// readable while normalizing and validating every real directory.
+export const directoryColumn = customType<{
+  data: string
+  driverData: string
+  driverOutput: string
+}>({
+  dataType() {
+    return "text"
+  },
+  toDriver(input) {
+    return input ? absolute(input) : input
+  },
+  fromDriver(input) {
+    return input ? toPlatform(absolute(input)) : input
+  },
+})
+
+export const pathColumn = customType<{
+  data: string
+  driverData: string
+  driverOutput: string
+}>({
+  dataType() {
+    return "text"
+  },
+  toDriver(input) {
+    return storagePath(input)
+  },
+  fromDriver(input) {
+    return storagePath(input)
+  },
+})
+
+export const absoluteArrayColumn = customType<{
+  data: AbsolutePath[]
+  driverData: string
+  driverOutput: string
+}>({
+  dataType() {
+    return "text"
+  },
+  toDriver(input) {
+    return JSON.stringify(input.map(absolute))
+  },
+  fromDriver(input) {
+    return (JSON.parse(input) as string[]).map((item) => AbsolutePath.make(toPlatform(absolute(item))))
+  },
+})