fix(gpu-interop): clean up pooled GL slots on constructor failure

[hyperb1iss]

Motivation

• Prevent leaking GL memory objects, textures, and framebuffers when LinuxGlFramebufferImporter::new fails partway through creating pooled ImportedFrameSlots, which previously dropped partially-constructed slots without invoking GL cleanup and could exhaust GPU resources.

Description

• In crates/hypercolor-linux-gpu-interop/src/linux.rs update LinuxGlFramebufferImporter::new to explicitly call destroy_gl_resources on all previously-created slots if ImportedFrameSlot::create(...) returns an error, then return the original error to avoid partial-construction leaks.

Testing

• Ran cargo test -p hypercolor-linux-gpu-interop --no-default-features --lib --no-run and the test build completed successfully.

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Codex Task

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 423f6cec-993b-46fc-9df1-d130845c1707

📥 Commits

Reviewing files that changed from the base of the PR and between 72769dd and 9aa082e.

📒 Files selected for processing (1)

• crates/hypercolor-linux-gpu-interop/src/linux.rs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/fix-gl-resource-leak-in-gpu-importer

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