Update tsconfig.json

[Fleuveroi]

Note

Modernizes TypeScript config: NodeNext modules, ES2020 target/lib, excludes dist, and streamlines strict options.

• Build/TypeScript Config (tsconfig.json):
  • Switch module and moduleResolution to NodeNext.
  • Bump target and lib to es2020.
  • Add dist to exclude; simplify exclude entries.
  • Keep strict; remove redundant strictNullChecks/noImplicitReturns; retain noUnused* and noFallthroughCasesInSwitch.
  • Add descriptive comments and minor cleanup.

^{Written by Cursor Bugbot for commit 03e8364. This will update automatically on new commits. Configure here.}

[cursor]

Bug: Incorrect removal of noImplicitReturns option

The comment claims noImplicitReturns is covered by strict: true, but this is incorrect. The strict flag only enables noImplicitAny, noImplicitThis, alwaysStrict, strictBindCallApply, strictNullChecks, strictFunctionTypes, and strictPropertyInitialization. It does not include noImplicitReturns, which must be enabled separately. Removing this option weakens type checking by no longer requiring all code paths in functions to return values.