fix(build): escape literal braces in bun:sqlite stub regex (Perl strict)

[nuga0718]

Problem

./setup fails on Windows with exit code 255 during the final build step:

Unescaped left brace in regex is illegal here in regex;
marked by <-- HERE in m/import { <-- HERE  Database } from "bun:sqlite";/
error: script "build" exited with code 255

browse/scripts/build-node-server.sh post-processes the Node server bundle with a Perl substitution that stubs out the bun:sqlite import. The pattern contains an unescaped literal {:

perl -pi -e 's|import { Database } from "bun:sqlite";|const Database = null; ...|g' ...

Perl treats an unescaped { that is not part of a valid quantifier as an error, so the build hard-fails before the stub is applied.

Environment

• Reproduced on Windows Git Bash (msys Perl 5.26.2).
• Also affects modern Perl 5.32+ on Linux, where the long-standing deprecation became a hard error.

Fix

Escape the braces (\{ \}) so they match literally. One-line change, behavior-preserving.

Verification

After the fix, on the same Windows environment:

• Build completes with exit code 0.
• The substitution correctly produces const Database = null; // bun:sqlite stubbed on Node (no real from "bun:sqlite" import remains).
• The Windows compatibility polyfill header is injected.
• node --check browse/dist/server-node.mjs passes.

🤖 Generated with Claude Code

[trunk-io]

Merging to main in this repository is managed by Trunk.

• To merge this pull request, check the box to the left or comment /trunk merge below.

After your PR is submitted to the merge queue, this comment will be automatically updated with its status. If the PR fails, failure details will also be posted here