diff --git a/packages/desktop/src/main/wsl/sidecar-shell.test.ts b/packages/desktop/src/main/wsl/sidecar-shell.test.ts
new file mode 100644
index 0000000000..ffb3b58fab
--- /dev/null
+++ b/packages/desktop/src/main/wsl/sidecar-shell.test.ts
@@ -0,0 +1,29 @@
+import { expect, test } from "bun:test"
+import { chmod, mkdtemp, rm, writeFile } from "node:fs/promises"
+import { tmpdir } from "node:os"
+import { join } from "node:path"
+import { wslSidecarShell } from "./sidecar-shell"
+
+test("loads interactive WSL environment variables for the desktop server", async () => {
+  const home = await mkdtemp(join(tmpdir(), "opencode-wsl-env-"))
+  const opencode = join(home, "opencode")
+  await writeFile(join(home, ".profile"), 'source "$HOME/.bashrc"\n')
+  await writeFile(join(home, ".bashrc"), "export COMPANY_BASEURL=https://company.example\n")
+  await writeFile(opencode, '#!/usr/bin/env bash\nprintf "%s" "$COMPANY_BASEURL"\n')
+  await chmod(opencode, 0o755)
+
+  const shell = wslSidecarShell(opencode, 4096, "opencode", "secret", false)
+  const proc = Bun.spawn(shell.args, {
+    cwd: home,
+    env: { ...process.env, HOME: home },
+    stdin: new Blob([shell.script]),
+    stdout: "pipe",
+    stderr: "pipe",
+  })
+  const output = await new Response(proc.stdout).text()
+  await new Response(proc.stderr).text()
+  const code = await proc.exited
+  await rm(home, { recursive: true, force: true })
+
+  expect({ code, output }).toEqual({ code: 0, output: "https://company.example" })
+})
diff --git a/packages/desktop/src/main/wsl/sidecar-shell.ts b/packages/desktop/src/main/wsl/sidecar-shell.ts
new file mode 100644
index 0000000000..e1eceb6e3a
--- /dev/null
+++ b/packages/desktop/src/main/wsl/sidecar-shell.ts
@@ -0,0 +1,28 @@
+import { shellEscape } from "./runtime"
+
+export function wslSidecarShell(opencode: string, port: number, username: string, password: string, packaged: boolean) {
+  return {
+    // Explicit WSL commands skip login startup files. Load the same user environment
+    // as a terminal launch, then replace the interactive shell before reading stdin.
+    args: [
+      "bash",
+      "--noprofile",
+      "--norc",
+      "-ic",
+      'for file in "$HOME/.bash_profile" "$HOME/.bash_login" "$HOME/.profile"; do [[ ! -r "$file" ]] || { source "$file"; break; }; done; exec bash -se',
+    ],
+    script: [
+      "set -euo pipefail",
+      'cd "$HOME" || cd /',
+      'PATH=$(awk -v RS=: -v ORS=: \'$0 !~ /^\\/mnt\\//\' <<<"$PATH" | sed "s/:$//")',
+      "export PATH",
+      "export WSLENV=",
+      "export OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER=true",
+      "export OPENCODE_CLIENT=desktop",
+      `export OPENCODE_SERVER_USERNAME=${shellEscape(username)}`,
+      `export OPENCODE_SERVER_PASSWORD=${shellEscape(password)}`,
+      'export XDG_STATE_HOME="$HOME/.local/state"',
+      `exec ${shellEscape(opencode)} --print-logs --log-level ${packaged ? "WARN" : "INFO"} serve --hostname 0.0.0.0 --port ${port}`,
+    ].join("\n"),
+  }
+}
diff --git a/packages/desktop/src/main/wsl/sidecar.ts b/packages/desktop/src/main/wsl/sidecar.ts
index 522e575a47..1e4b550474 100644
--- a/packages/desktop/src/main/wsl/sidecar.ts
+++ b/packages/desktop/src/main/wsl/sidecar.ts
@@ -3,7 +3,8 @@ import { randomUUID } from "node:crypto"
 import { createServer } from "node:net"
 import { app } from "electron"
 import { checkHealth } from "../server"
-import { type WslCommandLine, resolveWslOpencode, shellEscape, wslArgs } from "./runtime"
+import { type WslCommandLine, resolveWslOpencode, wslArgs } from "./runtime"
+import { wslSidecarShell } from "./sidecar-shell"
 import { pollWslHealth } from "./startup"
 
 export type WslSidecar = {
@@ -23,24 +24,12 @@ export async function spawnWslSidecar(
   const port = await allocatePort()
   const password = randomUUID()
   const username = "opencode"
-  const script = [
-    "set -euo pipefail",
-    'cd "$HOME" || cd /',
-    'PATH=$(awk -v RS=: -v ORS=: \'$0 !~ /^\\/mnt\\//\' <<<"$PATH" | sed "s/:$//")',
-    "export PATH",
-    "export WSLENV=",
-    "export OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER=true",
-    "export OPENCODE_CLIENT=desktop",
-    `export OPENCODE_SERVER_USERNAME=${shellEscape(username)}`,
-    `export OPENCODE_SERVER_PASSWORD=${shellEscape(password)}`,
-    'export XDG_STATE_HOME="$HOME/.local/state"',
-    `exec ${shellEscape(opencode)} --print-logs --log-level ${app.isPackaged ? "WARN" : "INFO"} serve --hostname 0.0.0.0 --port ${port}`,
-  ].join("\n")
-  const child = spawn("wsl", wslArgs(["bash", "-se"], distro), {
+  const shell = wslSidecarShell(opencode, port, username, password, app.isPackaged)
+  const child = spawn("wsl", wslArgs(shell.args, distro), {
     stdio: ["pipe", "pipe", "pipe"],
     windowsHide: true,
   })
-  child.stdin.end(script)
+  child.stdin.end(shell.script)
 
   const recentOutput: string[] = []
   const emit = (line: WslCommandLine) => {