Fix battle move animations not firing from buttons; add post-attack pause

[Copilot]

• Fix: on_button_pressed made async in terminal.py; move-button calls now await self.execute_player_move(...) — coroutine was silently dropped before
• Fix: await simple_delay(0.5) added after opponent's turn in execute_player_move
• Fix CI: add pytest-asyncio to the pip install step in ci.yml — it was missing, causing all 33 async tests in test_text_animation.py to fail with "async def functions are not natively supported"
• All 1725 tests pass locally

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[MobyNL]

@copilot not all unit tests pass. Please fix the issues, or update the unit tests if we updated our code

[Copilot]

@copilot not all unit tests pass. Please fix the issues, or update the unit tests if we updated our code

Fixed in fa38c86. The 33 failing tests were all async tests in test_text_animation.py — pytest-asyncio was missing from the CI pip install command in ci.yml, so the asyncio_mode = "auto" setting in pyproject.toml had no effect. Added pytest-asyncio to the install step. All 1725 tests now pass.