A polish release setting the stage for next week’s unveil. It adds a Color type, opt‑in replay for existing query matches, stricter typing, and consistent vector access semantics — all while keeping performance crisp and coverage at 100%.

Added

• Color type: Types.Color (RGBA), stored as Float32Array[4], defaulting to [1, 1, 1, 1]. Initialization clamps channels to [0, 1] and warns when clamping occurs (under checks).
• Query subscription replay: Query.subscribe(event, callback, replayExisting?) can now replay existing matches when subscribing to 'qualify'.

Changed

• Systems: World.registerSystem now accepts partial configData (you can provide only the keys you care about).
• Typing/lint: Tightened internal typings and banned explicit any in src/; enabled curly rule to require braces for control statements.

Fixed

• Vector access correctness: Entity.getValue/setValue now throw for vector‑like fields (Types.Vec2, Types.Vec3, Types.Vec4, and Types.Color). Previously, these calls could lead to partial or incorrect reads/writes (e.g., only touching the first lane). Use getVectorView(component, key) to read/write packed vector data.

Documentation

• Query docs updated with the new subscribe signature and behavior.
• Added a focused page on replaying existing subscriptions.
• Getting Started note updated to include Types.Color in vector access guidance.
• Entity docs now call out vector‑view requirements explicitly.

Tests

• Maintained 100% coverage. Added tests for Color initialization (clamping + defaults), vector access enforcement, and replayExisting subscribe behavior.

Migration

• Replace any direct getValue/setValue usage on vector fields with getVectorView:

  // Before
  // const v = e.getValue(Position, 'value'); // now throws
  // e.setValue(Position, 'value', [x, y, z]); // now throws
  
  // After
  const v = e.getVectorView(Position, 'value');
  v[0] += dx;
  v[1] += dy;
  v[2] += dz;

• If you want to initialize subscribers with entities that already match a query, pass true as the third arg:

  query.subscribe('qualify', onQualify, true);