Closes #557

Description

Implements a configuration diff view for harbor config apply command with interactive confirmation prompt.

Changes

New Features

• AWS CDK-style diff output: Color-coded change visualization with [+] additions, [~] modifications, and [-] deletions
• Interactive confirmation prompt: Users must explicitly confirm changes with y/N (safe default: No)
• --yes flag: Skip confirmation for CI/CD automation (-y short form also supported)
• Change summary: Shows count of additions, modifications, and deletions at the top
• Smart filtering: Only shows fields explicitly set in the local config file (partial configs supported)

Implementation Details

• Added DiffConfigurations() view in pkg/views/configurations/diff/view.go
• Updated ApplyConfigCmd() to use the new diff view
• Added ExtractConfigValues() utility to normalize *models.ConfigurationsResponse into flat maps
• Styled output using charmbracelet/lipgloss for consistent terminal colors

Visual Output

Configuration changes to be applied:

[+] 1 to add  [~] 2 to modify

[+] OIDCClientID
    └─ "harbor-client"

[~] AuthMode
    [-] "db_auth"
    [+] "ldap_auth"

[~] TokenExpiration
    [-] 30
    [+] 60

Do you want to apply these changes? (y/N): 

Usage

Interactive mode (default)

harbor config apply -f config.yaml
# Shows diff, prompts for confirmation

Auto-apply mode (CI/CD)

harbor config apply -f config.yaml --yes
# Skips confirmation prompt

Partial configuration files

# config.yaml - only specify fields you want to change
auth_mode: ldap_auth
token_expiration: 60

Screenshots