Two-step cleanup of the no-unused-vars warning bucket :
1. Widened the rule's ignore patterns in eslint.config.js so the
`_`-prefix convention works uniformly across all four contexts
(function args, local vars, caught errors, destructured arrays).
The argsIgnorePattern was already `^_` ; added varsIgnorePattern,
caughtErrorsIgnorePattern, destructuredArrayIgnorePattern with
the same `^_` regex. Knocked 17 warnings out instantly because the
codebase had already adopted `_xxx` for unused locals and was
waiting on this config change.
2. Fixed the remaining 117 cases across 99 files by pattern :
* 26 catch-binding cases : `catch (e) {…}` → `catch {…}` (TS 4.0+
optional binding, ES2019). Cleaner than `catch (_e)` for the
dozen "swallow and toast" error handlers that don't read the
error.
* 58 unused imports removed (incl. one literal `electron`
contextBridge import that crept in from a phantom port-attempt).
* 28 destructure / assignment cases : prefixed with `_` where the
name documents the contract (test fixtures, hook return tuples
where one slot isn't used yet) ; deleted outright when the
assignment had no side effect and no documentary value.
* 3 function param cases : prefixed with `_`.
* 2 self-recursive `requestAnimationFrame` blocks that were dead
code (an interval-based alternative did the work) : deleted.
`tsc --noEmit` reports 0 errors after the changes. ESLint total
dropped from 1240 to 1108. Updated the baseline in
.github/workflows/ci.yml in the next commit.
Pattern decisions logged inline so future maintainers know that
`_`-prefix isn't slop — it's the documented, lint-aware way to mark
"intentionally unused" without having to remove the name.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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