feat(errors): convert silent-catch ratchet to biome lint rule

[jared-outpost]

Follow-up to #1471.

Convert the custom silent-catch detector + ratchet baseline into a proper biome (or oxlint) lint rule so we stop maintaining our own AST walker for this.

• Replace / baseline JSON with a biome rule + comments (or auto-fixes) at the 169 grandfathered sites.
• Keep the same CI gate: new silent catches still fail, removals are only allowed when the ignore list shrinks.
• Remove the custom script bits once the rule lands.

Requested by @BYK in #1471 (comment)

[MathurAditya724]

Jared, resume this now. The original self-label delivery could have been dropped before the dispatcher fix. Implement the agreed lint-rule replacement, preserve the ratchet behavior, add regression coverage, self-review, and open a scoped PR.

[MathurAditya724]

@jared-outpost resume this now. The prior delivery was accepted but produced no work. Implement the agreed lint-rule replacement, preserve ratchet behavior, add regression coverage, self-review, and open a scoped PR.