feat: auto-create .env file from .env.example if missing

[artengin]

Refs: #77

[coveralls]

Pull Request Test Coverage Report for Build 19103775997

Details

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.3%) to 98.746%

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Totals
Change from base Build 19103726582:	0.3%
Covered Lines:	315
Relevant Lines:	319

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💛 - Coveralls

[artengin]

The changes have been tested on the laravel-empty-project, everything works as expected.

[Copilot]

Pull Request Overview

This PR refactors the .env file handling logic in the InitCommand to ensure .env.example is always updated first, then .env is either copied from .env.example (if it doesn't exist) or updated separately (if it exists). This change improves consistency in how environment files are managed during project initialization.

• Simplified the conditional logic for .env file creation/update
• Ensured .env.example is always the source of truth that gets updated first
• Updated Clerk credentials handling to explicitly update all three environment files in the correct order

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/Commands/InitCommand.php	Refactored env file handling to always update .env.example first, then conditionally copy or update .env, and explicitly update all env files when Clerk authentication is enabled
tests/InitCommandTest.php	Updated test mocks to reflect the new env file handling logic, including additional callCopy and changeEnvFileCall expectations for .env creation and updates

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