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Also stops one benign libmpv message being logged as an error: `after creating texture: OpenGL error INVALID_ENUM` comes from the GL driver, arrives several times per playback start and per fullscreen toggle, and playback continues regardless. Hundreds of lines a session buried the errors that matter -- it is a debug line now. Verified end to end on the real display with an actual video playing: ten tab switches and four fullscreen toggles while frames were rendering, position advancing throughout, the render context intact, no crash, and an empty error log afterwards. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>