Switch production builds from -Os to -Oz to avoid 25 MB deployment limit

[Keavon]

No description provided.

[gemini-code-assist]

Code Review

This pull request updates the wasm-opt optimization flag from -Os to -Oz in the release build steps for the frontend. This change optimizes the WASM output for size over speed to remain under Cloudflare Pages' 25 MiB single-file limit, while retaining the -g flag to preserve the name section for runtime panic hooks. There are no review comments, and I have no feedback to provide.

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[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

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