Keep WordPress eval contracts portable across Anima and Anima LT

[georgeolaru]

Problem

The full WordPress eval-file contract pass fails when the generated anima-lt sibling is active even though the runtime behavior is current.

Root cause

Four test fixtures drifted from production contracts:

• the intro-animation test reloads the source integration after the active Anima LT theme already defined those functions;
• the post-content layout fixture hardcodes the commercial anima stylesheet slug even though runtime normalization correctly uses get_stylesheet();
• the Site Frame test still expects the controls at the end although the UI intentionally places them immediately before Fancy Titles;
• the contextual-colors test still expects the pre-rename title and description.

Expected

• The contracts run with either anima or generated anima-lt active.
• Fixtures assert current user-facing behavior and current control ordering.
• No production-only test hooks or mocks are introduced.
• The corrected contracts fail against the stale assumptions and pass against the current implementation.

RED evidence

The 2026-07-14 release pass reproduced all four failures through WP-CLI on style-manager.local with Anima LT 2.0.43 active.