🐋🔧：stop pointing dprint extension at path nothing installs

[DerekNonGeneric]

🐋 dev container
🔧 bug fix

Why

The dprint VS Code extension has been dead since #1775, failing at launch
on every attach:

[ERROR] Problem launching /home/node/.dprint/bin/dprint. /bin/sh: 1:
/home/node/.dprint/bin/dprint: not found
[ERROR] Error initializing dprint. Ensure it is globally installed on the
path (see https://dprint.dev/install) or specify a "dprint.path" setting
to the executable.

~/.dprint/bin/dprint was populated by the old fish-based
tools/devcontainer/post-start.fish, which ran dprint's curl installer
and added that directory to PATH. #1775 replaced that script with the
current bash post-create.sh/post-start.sh and dropped the install
step, but the dprint.path override in .vscode/settings.json still
points there -- at a location nothing populates anymore.

What this does

Removes the dprint.path override rather than restoring the global
install. Re-adding the curl installer would fix the symptom while undoing
what #1777 just settled: dprint is already a pinned devDependency
(currently 0.55.2) that pnpm installs to node_modules/.bin/dprint, and
a second, separately-versioned global copy would drift from that pin
instead of tracking it. The extension auto-resolves
node_modules/.bin/dprint when no dprint.path is set, and
devcontainer.json's remoteEnv already puts that directory on PATH,
so deleting the setting is the whole fix. A comment is left in its place
so the next person doesn't helpfully re-add it.

Test plan

• node_modules/.bin/dprint --version reports 0.55.2, matching the
  package.json pin.
• node_modules/.bin/dprint check --config dprint.json runs clean.
• nps verify.json (biome) clean on the edited settings.json.
• Confirmed against the extension's own docs that dprint.path has no
  ${workspaceFolder} substitution, and that node_modules resolution
  is the supported path for a project-local binary.
• Extension output pane shows no launch error after a window reload
  (needs a reattach to confirm on your side).

🤖 Generated with Claude Code

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