…ports

The demo server's pm2 out.log grew without limit because three console.log
calls run ungated by NODE_ENV: two in the sandbox dependency resolver (one
per unresolvable import, per request) and one in the websocket data
generator (one per tick, per socket). Together they were ~96% of the lines
sampled from the production log. Route them through the existing winston
Logger at debug level, which is suppressed in production (level "http") and
still visible in development.

The resolver logged so heavily because it never tried <name>/index.ts(x),
so folder modules such as ./FloatingPanel could not resolve and the sandbox
received "could not load source" instead of the real file. Add index
resolution and check all four candidates in both cache guards, which also
stops the external-import pass re-resolving what the local pass stored.

Verified: SmithChart, the case in the production log, now resolves;
unresolved imports across 350 example entry points drop 2 -> 1 with the
sandbox file count unchanged at 1114.

Note this removes the log source only. Capping growth also needs
pm2-logrotate on the server, which pm2 does not install by default.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>