Dev server fails with ENOENT errors when optimizeDeps enabled in Vite config

Enabling optimizeDeps in vite.config.ts makes the Fresh dev server return 500 for every request.

With optimizeDeps enabled, the Deno loader plugin receives a module id carrying Vite's ?v=<hash> suffix and passes it to path.toFileUrl(), which percent-encodes the ? into the filename, which throws an exception because the file cannot be found:

[vite] Internal server error: Unable to load
  /…/[email protected]/…/preact/debug/dist/debug.module.js?v=ff8da874:
  ENOENT: no such file or directory, open
  '/…/[email protected]/…/preact/debug/dist/debug.module.js?v=ff8da874'

Both environments are affected — client and environments.ssr fail identically, on the .module.js and .mjs builds respectively.

The failing module is not the one being optimized: adding preact to optimizeDeps produces the error for preact/debug. Vite versions dependency ids whether or not it pre-bundles them, so excluding one module just moves the error to the next.

Reproduction

See https://github.com/mryall-mawson/fresh-vite-loader-repro

app/ is an unmodified deno run -Ar jsr:@fresh/init@^2 scaffold; the only edit is vite.config.ts, switching optimizeDeps on from an env var:

./run.sh
without optimizeDeps: HTTP 200
with optimizeDeps   : HTTP 500

repro.ts in the same repo shows the defect with no Vite or Fresh involved.

Expected behaviour

The page renders with optimizeDeps enabled.

Versions

@fresh/core 2.3.3, @fresh/plugin-vite 1.1.2, vite 7.3.6, deno 2.9.4

Cause

packages/plugin-vite/src/plugins/deno.ts:220

const url = path.toFileUrl(id);
const result = await loader.load(url.href, meta.type);