Implement enterprise licensing management system for Business Central

[Copilot]

Adds a complete licensing management system with RSA-2048 signed licenses, centralized application registry, and date-based access control.

Core Components

Business Central Objects (80570-80599)

• Tables: Application registry, License Header with BLOB signature storage, License Detail for feature permissions
• Pages: List/Card pairs for applications and licenses, detail subpage for feature configuration
• Codeunits: License validation, signature data serialization, feature access control, integration samples
• Enum: License status state machine (Invalid → Unsigned → Pending → Active → Expired)

Cryptographic Infrastructure

• RSA-2048-SHA256 signing: PowerShell scripts for key generation, license signing, and signature verification
• Tamper detection: Base64-encoded signatures stored in BLOB fields, verified before validation
• Key management: Separate public/private storage with .gitignore protection

CLI Interface (LicenseManager-CLI.ps1)

Five operations: GenerateKeys, CreateLicense, SignLicense, VerifyLicense, ListApplications

Integration Pattern

// Feature access control
local procedure ExecutePremiumFeature()
var
    LicenseValidator: Codeunit "LM License Validator Sample";
begin
    LicenseValidator.CheckFeatureAccessWithError('APP-001', 'PREMIUM');
    // Feature implementation
end;

// License validation with metadata
local procedure GetLicenseMetadata()
var
    LicenseValidator: Codeunit "LM License Validator Sample";
    LicenseNo: Code[20];
    ExpiryDate: Date;
    MaxUsers: Integer;
begin
    if LicenseValidator.GetLicenseInfo('APP-001', LicenseNo, ExpiryDate, MaxUsers) then
        // Use license metadata
end;

Security Model

• Automatic status updates: Date-based transitions trigger on record insert/modify
• Signature verification: GetLicenseSignatureData() serializes license+features, hash verified against stored RSA signature
• Permission levels: Read/Write/Execute/Full per feature with quantity limits
• Audit trails: Created/Modified By/Date on all core tables

Documentation

• QUICKSTART.md: 5-minute setup workflow
• ARCHITECTURE.md: State machines, data flow diagrams, component interactions
• IMPLEMENTATION_SUMMARY.md: Statistics and testing results

Object ID allocation reserves 80580-80599 for future API endpoints and license analytics.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Implement Comprehensive Licensing Management Application for Business Central</issue_title>
<issue_description>Description:
This PR introduces a full-featured licensing management system for Business Central solutions. It enables secure, signed license file generation, centralized application management, and date-based access control to ensure enterprise-grade software licensing.

Overview

The system provides a complete solution for managing software licenses in Business Central environments, featuring:

Centralized Application Registry: Maintain applications with version control and activation status.
Secure License Generation: RSA-2048 signed licenses to prevent tampering.
Date-Based Access Control: Configurable validity periods with automatic enforcement.
Command-Line Interface: Streamlined CLI for licensing operations.
Key Features
Application Management

Add, list, and update applications in the centralized registry.
Track versions and control activation status.
Full application lifecycle management.
License Creation & Validation

Generate cryptographically signed licenses.
Validate license authenticity and permissions.
Support feature-based licensing and custom metadata.
Automatic tamper detection via signature verification.
Security

RSA digital signatures with automated key pair generation.
Tamper-proof license files.
Secure key management (separate public/private key storage).
Date-based access control with precise timestamp validation.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Implement Comprehensive Licensing Management Application for Business Central #13

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