fix(app): regressions

packages/app/src/components/file-tree.tsx

@@ -1,4 +1,5 @@
 import { useFile } from "@/context/file"
+import { encodeFilePath } from "@/context/file/path"
 import { Collapsible } from "@opencode-ai/ui/collapsible"
 import { FileIcon } from "@opencode-ai/ui/file-icon"
 import { Icon } from "@opencode-ai/ui/icon"
@@ -20,11 +21,7 @@ import { Dynamic } from "solid-js/web"
 import type { FileNode } from "@opencode-ai/sdk/v2"
 
 function pathToFileUrl(filepath: string): string {
-  const encodedPath = filepath
-    .split("/")
-    .map((segment) => encodeURIComponent(segment))
-    .join("/")
-  return `file://${encodedPath}`
+  return `file://${encodeFilePath(filepath)}`
 }
 
 type Kind = "add" | "del" | "mix"
@@ -223,12 +220,14 @@ export default function FileTree(props: {
       seen.add(item)
     }
 
-    return out.toSorted((a, b) => {
+    out.sort((a, b) => {
       if (a.type !== b.type) {
         return a.type === "directory" ? -1 : 1
       }
       return a.name.localeCompare(b.name)
     })
+
+    return out
   })
 
   const Node = (

packages/app/src/components/prompt-input/build-request-parts.test.ts

@@ -112,7 +112,7 @@ describe("buildRequestParts", () => {
       // Special chars should be encoded
       expect(filePart.url).toContain("file%23name.txt")
       // Should have Windows drive letter properly encoded
-      expect(filePart.url).toMatch(/file:\/\/\/[A-Z]%3A/)
+      expect(filePart.url).toMatch(/file:\/\/\/[A-Z]:/)
     }
   })
 
@@ -210,7 +210,7 @@ describe("buildRequestParts", () => {
     if (filePart?.type === "file") {
       // Should handle absolute path that differs from sessionDirectory
       expect(() => new URL(filePart.url)).not.toThrow()
-      expect(filePart.url).toContain("/D%3A/other/project/file.ts")
+      expect(filePart.url).toContain("/D:/other/project/file.ts")
     }
   })
 

packages/app/src/components/prompt-input/build-request-parts.ts

@@ -1,6 +1,7 @@
 import { getFilename } from "@opencode-ai/util/path"
 import { type AgentPartInput, type FilePartInput, type Part, type TextPartInput } from "@opencode-ai/sdk/v2/client"
 import type { FileSelection } from "@/context/file"
+import { encodeFilePath } from "@/context/file/path"
 import type { AgentPart, FileAttachmentPart, ImageAttachmentPart, Prompt } from "@/context/prompt"
 import { Identifier } from "@/utils/id"
 
@@ -27,23 +28,11 @@ type BuildRequestPartsInput = {
   sessionDirectory: string
 }
 
-const absolute = (directory: string, path: string) =>
-  path.startsWith("/") ? path : (directory + "/" + path).replace("//", "/")
-
-const encodeFilePath = (filepath: string): string => {
-  // Normalize Windows paths: convert backslashes to forward slashes
-  let normalized = filepath.replace(/\\/g, "/")
-
-  // Handle Windows absolute paths (D:/path -> /D:/path for proper file:// URLs)
-  if (/^[A-Za-z]:/.test(normalized)) {
-    normalized = "/" + normalized
-  }
-
-  // Encode each path segment (preserving forward slashes as path separators)
-  return normalized
-    .split("/")
-    .map((segment) => encodeURIComponent(segment))
-    .join("/")
+const absolute = (directory: string, path: string) => {
+  if (path.startsWith("/")) return path
+  if (/^[A-Za-z]:[\\/]/.test(path) || /^[A-Za-z]:$/.test(path)) return path
+  if (path.startsWith("\\\\") || path.startsWith("//")) return path
+  return `${directory.replace(/[\\/]+$/, "")}/${path}`
 }
 
 const fileQuery = (selection: FileSelection | undefined) =>