Align admin dashboard version for 1.7.0

[mehul0810]

Summary

• align PERFORM_VERSION with the 1.7.0 release branch metadata
• keep the PHPStan bootstrap version mirror in sync
• load plugin constants in the PHPUnit bootstrap and assert the dashboard payload reports 1.7.0

Issue

• Fixes Align admin dashboard version display with 1.7.0 branch metadata #188

Validation

• php -l tests/bootstrap.php && php -l config/constants.php && php -l phpstan-bootstrap.php && php -l tests/unit-tests/tests-dashboard-payload.php
• ./vendor/bin/parallel-lint config/constants.php phpstan-bootstrap.php tests/bootstrap.php tests/unit-tests/tests-dashboard-payload.php --show-deprecated
• ./vendor/bin/phpcs -s config/constants.php phpstan-bootstrap.php tests/bootstrap.php tests/unit-tests/tests-dashboard-payload.php
• ./vendor/bin/phpunit --dont-report-useless-tests --filter Tests_Dashboard_Payload
• composer test
• composer lint
• composer phpstan

Proof

• Current-state screenshot from the existing Studio checkout shows the Perform dashboard version card rendering 1.6.0 at output/playwright/perform-169-dashboard.png.
• Code-path proof now covers the admin dashboard payload source: DashboardPayload::get_data() reads PERFORM_VERSION, and the focused PHPUnit assertion verifies the payload reports 1.7.0.

Browser proof gap

• I did not install this patched branch into the active Studio plugin path because that checkout is dirty and was explicitly read-only for this task.
• After-merge or owner-run browser proof should verify the dashboard card on options-general.php?page=perform_settings shows 1.7.0 and that the Scope Runtime Diagnostics to the Dashboard tab on the 1.7.0 beta settings UI #169 diagnostics behavior remains unchanged.

Scope notes

• This does not refresh or replace 1.7.0.beta.1.
• This does not tag, release, publish, merge production/main, close issues, or change milestone dates.

[github-actions]

Test on Playground
Test this pull request on the Playground