chore: remove unused plugin cache assignments (#2446)

src/utils/plugins/installedPluginsManager.ts

@@ -1186,12 +1186,11 @@ export async function migrateFromEnabledPlugins(): Promise<void> {
 
         const { entry, marketplaceInstallLocation } = pluginInfo
 
-        let installPath: string
         let version = 'unknown'
         let gitCommitSha: string | undefined = undefined
 
         if (typeof entry.source === 'string') {
-          installPath = join(marketplaceInstallLocation, entry.source)
+          const installPath = join(marketplaceInstallLocation, entry.source)
           version = getPluginVersionFromManifest(installPath, pluginId)
           gitCommitSha = await getGitCommitSha(installPath)
         } else {
@@ -1218,8 +1217,6 @@ export async function migrateFromEnabledPlugins(): Promise<void> {
             continue
           }
 
-          installPath = pluginCachePath
-
           // Only read manifest if the .claude-plugin dir is present
           if (dirEntries.includes('.claude-plugin')) {
             version = getPluginVersionFromManifest(pluginCachePath, pluginId)

src/utils/plugins/marketplaceManager.ts

@@ -1861,7 +1861,6 @@ async function loadAndCacheMarketplace(
               )
             }
           }
-          cleanupNeeded = false // Clone is the live cache (renamed, copied, or kept)
         } catch (error) {
           const errorMsg = errorMessage(error)
           throw new Error(

src/utils/plugins/mcpbHandler.ts

@@ -796,7 +796,6 @@ export async function loadMcpbFile(
 
   // Not cached or changed - need to download/load and extract
   let mcpbData: Uint8Array
-  let mcpbFilePath: string
 
   if (isUrl(source)) {
     // Download from URL
@@ -804,7 +803,7 @@ export async function loadMcpbFile(
       .update(source)
       .digest('hex')
       .substring(0, 8)
-    mcpbFilePath = join(cacheDir, `${sourceHash}.mcpb`)
+    const mcpbFilePath = join(cacheDir, `${sourceHash}.mcpb`)
     mcpbData = await downloadMcpb(source, mcpbFilePath, onProgress)
   } else {
     // Load from local path
@@ -816,7 +815,6 @@ export async function loadMcpbFile(
 
     try {
       mcpbData = await fs.readFileBytes(localPath)
-      mcpbFilePath = localPath
     } catch (error) {
       if (isENOENT(error)) {
         const err = new Error(`MCPB file not found: ${localPath}`)