Completes the JS→TS server migration. server.js → server.cts (Node
type-stripping, no build step), and every launch/config reference now
points at it: package.json (main/dev:api/start/check:server) and the
Docker CMD.
scripts/seedDemoData.js is required at runtime by routes/user.cts, so it
crosses into the server runtime — migrated to .cts and its require of
db/database updated to the .cts path. The remaining scripts/*.js are
standalone dev/ops tooling (outside the runtime and the check:server
boundary); their stale extensionless requires of now-.cts modules were
repaired so they still run, and the PM2 ecosystem config entry point was
updated to server.cts.
Verified: 0 runtime .js remain in the server tree; typecheck:server and
check:server clean; 226/226 tests pass; `node server.cts` boots and
/api/health returns 200.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
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