Complete TypeScript migration with strict mode and zero `any` types#65

Draft

Copilot wants to merge 15 commits intomainfrom

copilot/fix-be7cc5ba-0d29-4d90-a733-1e00df6363f8

Commits on Oct 1, 2025

Initial plan
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Convert basic library files to TypeScript (wca-env, localStorage, history, formulas, events)

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Convert remaining core library files to TypeScript (wcaAPI, wcif-extensions, wcif-validation)

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Convert lib/import.js to TypeScript with proper typing

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Convert store reducers and reportWebVitals to TypeScript

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Changes before error encountered

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Changes before error encountered

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Fixed typescript issues
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Fix TypeScript errors in Import, Query, and Room files - remove @ts-nocheck

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Remove @ts-nocheck from all remaining files and add type fixes

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Fix TypeScript errors - significant progress on removing @ts-nocheck

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Enable strict TypeScript mode and fix store files - remove any types

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Fix implicit any errors in library files - activities, events, wcif-extensions, wcaAPI

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Fix all implicit any errors in utils.ts - comprehensive type annotations

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Fix implicit any errors in provider and simple component files

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