fix: append ssh include lines without spread

src/main/ssh/ssh-config-include-expander.ts

@@ -64,7 +64,7 @@ function expandSshConfigFile(
 
     for (const includeArg of includeArgs) {
       for (const matchedPath of resolveIncludePaths(includeArg, context)) {
-        expandedLines.push(...expandSshConfigFile(matchedPath, context, nextStack))
+        appendExpandedLines(expandedLines, expandSshConfigFile(matchedPath, context, nextStack))
       }
     }
   }
@@ -72,6 +72,14 @@ function expandSshConfigFile(
   return expandedLines
 }
 
+function appendExpandedLines(target: string[], source: string[]): void {
+  // Why: valid include files can stay under the byte cap while still exceeding
+  // V8's argument limit if appended with `push(...source)`.
+  for (const line of source) {
+    target.push(line)
+  }
+}
+
 function readCachedFile(filePath: string, context: IncludeExpansionContext): string | null {
   const cached = context.cache.get(filePath)
   if (cached !== undefined) {

src/main/ssh/ssh-config-loader.test.ts

@@ -100,6 +100,19 @@ describe('loadUserSshConfig', () => {
     expect(loadUserSshConfig().map((host) => host.host)).toEqual(['first', 'second'])
   })
 
+  it('loads an include file with more lines than the JavaScript argument limit', () => {
+    const home = makeHome()
+    const manyCommentLines = Array.from({ length: 130_000 }, () => '#').join('\n')
+    writeFile(
+      home,
+      '.ssh/config',
+      'Include many-comments.conf\nHost after\n  HostName after.example.com\n'
+    )
+    writeFile(home, '.ssh/many-comments.conf', manyCommentLines)
+
+    expect(loadUserSshConfig().map((host) => host.host)).toEqual(['after'])
+  })
+
   it('supports relative includes, ${VAR}, and local % tokens', () => {
     const home = makeHome()
     process.env.ORCA_SSH_INCLUDE = 'from-env.conf'