Jiwon Choi d7aa66c345 Remove generated error codes (#97687) ...

### Why?

Should come up with better solution that does not block PRs with git
conflict

x-ref:
https://vercel.slack.com/archives/C02CDC2ALJH/p1785263902728189?thread_ts=1785263687.502649&cid=C02CDC2ALJH

### How?

- Delete `errors.json`, the error-code SWC plugin, generated WASM, merge
driver, and validation/build tooling.
- Stop attaching error codes to server-rendering digests, redboxes, and
telemetry; native `Error.code` and `Error.name` remain available where
applicable.
- Remove the development-overlay error feedback UI, middleware, and
telemetry event that depended on stable codes.
- Update fixtures, snapshots, and guidance for code-free errors and
numeric-only digests.

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2026-08-21 22:45:12 +02:00

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server-side-dev-errors.test.ts

Remove generated error codes (#97687)

2026-08-21 22:45:12 +02:00