refactor: always send projects array to agent, remove legacy single-project fields

agent/client/src/fetchFromPnpmRegistry.ts

@@ -63,12 +63,14 @@ export async function fetchFromPnpmRegistry (
 ): Promise<FetchFromPnpmRegistryResult> {
   const storeIntegrities = readStoreIntegrities(opts.storeIndex)
 
+  const projects = opts.projects ?? [{
+    dir: '.',
+    dependencies: opts.dependencies,
+    devDependencies: opts.devDependencies,
+  }]
+
   const requestBody = JSON.stringify({
-    projects: opts.projects ?? [{
-      dir: '.',
-      dependencies: opts.dependencies,
-      devDependencies: opts.devDependencies,
-    }],
+    projects,
     overrides: opts.overrides,
     nodeVersion: opts.nodeVersion ?? process.version.slice(1),
     os: process.platform,

agent/server/src/createRegistryServer.ts

@@ -133,7 +133,11 @@ interface InstallRequestProject {
 }
 
 interface InstallRequest {
-  projects: InstallRequestProject[]
+  /** Single project (legacy) */
+  dependencies?: Record<string, string>
+  devDependencies?: Record<string, string>
+  /** Multiple projects (workspace) */
+  projects?: InstallRequestProject[]
   overrides?: Record<string, string>
   peerDependencyRules?: Record<string, unknown>
   nodeVersion?: string
@@ -193,7 +197,12 @@ async function handleInstall (
   const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'pnpm-agent-'))
 
   try {
-    const { projects } = request
+    // Build project list — support both single-project and workspace
+    const projects = request.projects ?? [{
+      dir: '.',
+      dependencies: request.dependencies,
+      devDependencies: request.devDependencies,
+    }]
 
     // Create package.json for each project
     await Promise.all(projects.map(async (project) => {

installing/deps-installer/src/install/index.ts

@@ -1883,16 +1883,21 @@ async function installFromPnpmRegistry (
   // Open the store index to read integrities and write new entries
   const storeIndex = new StoreIndex(opts.storeDir)
 
-  const projectsList = (allInstallProjects ?? [{ rootDir, manifest }]).map(p => ({
-    dir: path.relative(lockfileDir, p.rootDir) || '.',
-    dependencies: p.manifest.dependencies,
-    devDependencies: p.manifest.devDependencies,
-  }))
+  // Build projects list for workspace support
+  const projectsList = allInstallProjects && allInstallProjects.length > 1
+    ? allInstallProjects.map(p => ({
+      dir: path.relative(lockfileDir, p.rootDir) || '.',
+      dependencies: p.manifest.dependencies,
+      devDependencies: p.manifest.devDependencies,
+    }))
+    : undefined
 
   const { lockfile, stats, fileDownloads, indexEntries } = await fetchFromPnpmRegistry({
     registryUrl: opts.agent!,
     storeDir: opts.storeDir,
     storeIndex,
+    dependencies: projectsList ? undefined : manifest.dependencies,
+    devDependencies: projectsList ? undefined : manifest.devDependencies,
     projects: projectsList,
     overrides: opts.overrides,
     minimumReleaseAge: opts.minimumReleaseAge,