testing

Testing Goal

Push the suite toward three layers only:

• Pure unit tests for deterministic logic.
• Thin editor or plugin contract tests for real Plate or Slate wiring.
• Golden input or output tests for serializer and parser behavior.

Hard constraints:

• Bun-first and speed-first. bun run test is the default iterative workflow.
• pnpm test:all is the full end-of-task and CI run. Do not use it as the default inner-loop command.
• Keep the default iterative suite fast.
• No browser or e2e coverage in this program.
• Coverage is hotspot telemetry, not a vanity target. Do not chase repo-wide numbers blindly.
• Use coverage after each phase only to choose the next hotspot.
• No one-smoke-test-per-package sweep.
• Do not add broad smoke coverage for thin wrapper packages.