chore: clear pre-existing lint errors

- caveman.ts: drop unused ARTICLES constant (dropArticles has always
  used a hardcoded regex) and simplify the dropArticles replacement
  callback to a literal empty-string replacement. The callback never
  branched on its match/offset parameters, so the simpler form is
  equivalent and removes two biome noUnusedFunctionParameters hints.
- event-resolvers.test.ts: remove the biome-ignore comment for
  lint/performance/noDelete that no longer suppresses anything. The
  rule stopped firing on that site and biome promoted the stale
  suppression to an error.

Author: ualtinok

packages/plugin/src/hooks/magic-context/caveman.ts

@@ -121,8 +121,6 @@ const HEDGING_PHRASES = [
 
 const PLEASANTRIES = ["please", "thanks", "thank you", "kindly", "if possible"];
 
-const ARTICLES = ["the", "a", "an"];
-
 /** Auxiliary verbs we drop when they appear in non-essential positions.
  *  We only drop them between a subject noun and a participle/verb, where
  *  dropping changes tense but preserves meaning enough for a terse summary. */
@@ -222,10 +220,7 @@ function dropPhrases(text: string, phrases: string[]): string {
 function dropArticles(text: string): string {
     // Match " the ", " a ", " an " (with leading space) and replace with single space.
     // Also match at start of line: "The X" → "X".
-    let working = text.replace(/\b(?:the|a|an)\b\s+/gi, (match, _offset, full) => {
-        // Keep if at end of sentence fragment (before a period or line end) — rare.
-        return "";
-    });
+    let working = text.replace(/\b(?:the|a|an)\b\s+/gi, "");
     // Collapse resulting multiple spaces.
     working = working.replace(/ +/g, " ");
     return working;

packages/plugin/src/hooks/magic-context/event-resolvers.test.ts

@@ -160,7 +160,6 @@ describe("event-resolvers", () => {
                 [key: string]: number;
             };
             // Simulate missing default by deleting
-            // biome-ignore lint/performance/noDelete: test setup requires actual missing key
             delete (config as Record<string, unknown>).default;
 
             //#when