Provide file-level behavioral test audit response for PR #282

[Copilot]

This stacked PR addresses the review request to audit PR #282 for behavioral test quality rather than test count.
It delivers a structured, file-by-file assessment focused on business-observable guarantees, coupling risks, and confidence impact.

• Audit outcome posted to review thread

  • Added a formal response in the tagged @copilot thread with:
    • Behavioral Confidence Score (Moderate)
    • Per-file analysis for:
      • Modules/Clients/Tests/Feature/ContactsTest.php
      • Modules/Clients/Tests/Feature/CustomersTest.php
    • Explicit identification of:
      • strong behavioral assertions (validation + persistence checks)
      • weak/superficial assertions
      • structural coupling to Filament action internals
      • missing authorization / tenant-boundary guarantees

• Coverage scope clarified

  • Confirmed no modified Playwright test scope in PR Just develop to master #282.
  • Confirmed no generator/replay-driven test artifacts added in the reviewed delta.

• Blocking context captured

  • Documented CI blocker observed during audit context: composer install fails due duplicated lock entries for paragonie/constant_time_encoding.

// Example audit distinction applied in the review:
$component->assertSuccessful(); // weak alone
$this->assertDatabaseHas('relations', ['company_name' => 'Beta LLC']); // behavioral