#10531 - Refactor: Explicit/implicit Any type clean up from packages\ketcher-core\src\application\render\renderers\utils.ts file

[Copilot]

How the feature works? / How did you fix the issue?

getRenderedStructuresBbox in renderers/utils.ts relied on untyped accumulators, which allowed implicit any and unsafe narrowing. This update makes bbox accumulation explicitly typed and initialization-safe without changing behavior.

• Type safety hardening

  • Replaced untyped bbox accumulators with number | undefined.
  • Switched min/max updates to explicit undefined checks instead of truthy checks.

• Return-path guarantees

  • Added a pre-return assertion to ensure bbox coordinates are initialized before width/height calculation.

let left: number | undefined;
// ...
left =
  left !== undefined ? Math.min(left, monomerPosition.x) : monomerPosition.x;

Check list

• unit-tests written
• e2e-tests written
• documentation updated
• PR name follows the pattern #1234 – issue name
• branch name doesn't contain '#'
• PR is linked with the issue
• base branch (master or release/xx) is correct
• task status changed to "Code review"
• reviewers are notified about the pull request