fix: resolve pre-existing typecheck errors (zod v4 compat + RCS web exclude)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-code-best",
-  "version": "2.6.6",
+  "version": "2.6.5",
   "description": "Reverse-engineered Anthropic Claude Code CLI — interactive AI coding assistant in the terminal",
   "type": "module",
   "author": "claude-code-best <claude-code-best@proton.me>",

src/services/skillSearch/localSearch.ts

@@ -397,7 +397,7 @@ export function searchSkills(
   for (const v of freq.values()) if (v > max) max = v
   for (const [term, count] of freq) queryTf.set(term, count / max)
 
-  const idf = cachedIndex === index && cachedIdf ? cachedIdf : computeIdf(index)
+  const idf = cachedIdf ?? computeIdf(index)
   const queryTfIdf = new Map<string, number>()
   for (const [term, tf] of queryTf) {
     queryTfIdf.set(term, tf * (idf.get(term) ?? 0))