Migrate urfave/cli to v3

[javuto]

Migrating urfave/cli to v3 as described here https://cli.urfave.org/migrate-v2-to-v3/

[Copilot]

Pull request overview

This PR migrates the project from urfave/cli/v2 to v3, following the official migration guide. The changes update all CLI-related code to use the new v3 API patterns.

Key Changes:

• Updated import paths from github.com/urfave/cli/v2 to github.com/urfave/cli/v3
• Changed EnvVars field to Sources: cli.EnvVars() for all flags
• Updated action function signatures to accept context.Context and *cli.Command parameters
• Modified application initialization to use cli.Command instead of cli.App

Reviewed changes

Copilot reviewed 15 out of 16 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
pkg/config/flags.go	Updated all flag definitions to use Sources instead of EnvVars
go.mod	Updated dependency from cli/v2 to cli/v3 and removed obsolete transitive dependencies
cmd/tls/main.go	Updated CLI app initialization and action signatures to v3 patterns
cmd/cli/*.go	Updated all CLI command action functions to use new v3 signature
cmd/api/main.go	Updated API service CLI initialization and action handlers
cmd/admin/main.go	Updated admin service CLI initialization and action handlers

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[Copilot]

The condition len(cmd.Flags) == 0 will always be false since flags are appended in the Command initialization. The original v2 code used c.NumFlags() which checked for provided flags. Consider using cmd.NArg() == 0 && !cmd.Bool(\"help\") or a similar pattern to check if no arguments/flags were actually provided by the user.

Suggested change

	if len(cmd.Flags) == 0 {
	if err := cli.ShowCommandHelp(ctx, cmd, cmd.Name); err != nil {
	log.Fatal().Msgf("❌ Error with CLI help - %s", err)
	}
	return cli.Exit("\nNo flags provided", 2)
	if cmd.NArg() == 0 && !cmd.Bool("help") {
	if err := cli.ShowCommandHelp(ctx, cmd, cmd.Name); err != nil {
	log.Fatal().Msgf("❌ Error with CLI help - %s", err)
	}
	return cli.Exit("\nNo flags or arguments provided", 2)

[Copilot]

Using cmd.Name as the command name parameter is incorrect for the help command. This should be the parent command's name or empty string to show app-level help. Change to cli.ShowCommandHelpAndExit(ctx, cmd.Parent, \"\", 0) or similar.

Suggested change

	cli.ShowCommandHelpAndExit(ctx, cmd, cmd.Name, 0)
	cli.ShowCommandHelpAndExit(ctx, cmd, "", 0)

[Copilot]

Using cmd.Name (which is "help") as the command name parameter is incorrect. This should show the app-level help, not help for the help command itself. Change to cli.ShowCommandHelpAndExit(ctx, cmd.Parent, \"\", 0) or use an empty string for the command name.

Suggested change

	cli.ShowCommandHelpAndExit(ctx, cmd, cmd.Name, 0)
	cli.ShowCommandHelpAndExit(ctx, cmd, "", 0)

[Copilot]

Using cmd.Name (which is "help") as the command name parameter is incorrect. This should show the app-level help. Change to cli.ShowCommandHelpAndExit(ctx, cmd.Parent, \"\", 0) or use an empty string for the command name.

Suggested change

	cli.ShowCommandHelpAndExit(ctx, cmd, cmd.Name, 0)
	cli.ShowCommandHelpAndExit(ctx, cmd.Parent, "", 0)