- Removed the mnemopi Bun preload file and added explicit `./setup` imports in the changed test suites.
- Deleted the `RUN_EMBEDDINGS` flag path and shifted `MNEMOPI_NO_EMBEDDINGS` handling into per-suite before/after hooks.
- Excluded `packages/mnemopi` from the fast parallel CI test bucket with a note about missing fastembed models.
- Added composite GitHub actions to ensure rust toolchains and cargo helpers.
- Added a kata-native build action with variant checks and platform artifact uploads.
- Reworked CI matrices to split native cross-platform jobs and gate releases accordingly.
- Updated runner bootstrap and image to preinstall pinned build tools for CI consistency.
- Added a Bun test preload config in packages/mnemopi/bunfig.toml to run shared setup automatically.
- Moved embedding opt-out logic into test/setup.ts, using EMBEDDINGS=1 to enable embeddings and defaulting MNEMOPI_NO_EMBEDDINGS otherwise.
- Updated embedding-focused tests to import RUN_EMBEDDINGS and skip suites unless embeddings are enabled.
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