chore(deps): upgrade Angular 19 → 20

- ng update @angular/core@20 @angular/cli@20 @angular/material@20 @angular-eslint@20 @angular/google-maps@20
- Remove ng-chartist (abandoned, incompatible with Angular 20): replace <x-chartist> with <app-bars-chart> in dropzones-bar and jumps-by-month
- Migrate all constructor injection to inject() function (ng generate @angular/core:inject, 67 files)
- TypeScript 5.5 → 5.9.3
- DOCUMENT import moved from @angular/common to @angular/core (automatic migration)
- tsconfig moduleResolution updated to "bundler"

src/app/core/services/api.service.ts

@@ -1,13 +1,11 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpParams } from '@angular/common/http';
 import { Observable } from 'rxjs';
 
 @Injectable({ providedIn: 'root' })
 export class ApiService {
-    constructor(
-        private http: HttpClient
-    ) { }
+    private http = inject(HttpClient);
 
     /*private formatErrors(error: any) {
         return throwError(error.error);