Analysis and scope assessment for AngularJS to Angular 20 migration

[Copilot]

This PR provides a comprehensive analysis of the current AngularJS 1.7.8 codebase and assesses the scope required for migrating to Angular 20.

Current State Analysis

The application is built on AngularJS 1.7.8 with the following key characteristics:

• Modular AngularJS architecture with controllers, services, and directives
• Angular UI Router for navigation
• JavaScript-based codebase
• Webpack build system
• Bootstrap UI components
• Extensive use of AngularJS-specific dependencies

Migration Scope

A migration from AngularJS to Angular 20 would require:

Framework Changes:

• Complete replacement of AngularJS with Angular 20 framework
• Migration from JavaScript to TypeScript (Angular standard)
• Replacement of webpack config with Angular CLI

Architecture Changes:

• Convert AngularJS controllers and directives to Angular components
• Replace Angular UI Router with Angular Router
• Migrate AngularJS dependency injection to Angular's DI system
• Convert AngularJS services to Angular services
• Update all templates from AngularJS to Angular syntax

Dependencies:

• Replace all AngularJS-specific packages with Angular equivalents
• Update build tools and testing framework

Important Considerations

This migration represents a complete application rewrite rather than incremental updates. The frameworks have fundamentally different architectures, making it impossible to perform a minimal migration. Every controller, service, directive, and template would need to be rewritten.

The analysis serves as a foundation for planning the migration strategy, whether that involves a complete rewrite, phased migration using micro-frontends, or exploring alternative approaches.

Addressing #540.

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