Fix release installers and package manager fallbacks

scripts/install/install.ps1

@@ -45,7 +45,23 @@ New-Item -ItemType Directory -Path $tmpDir | Out-Null
 try {
   $archivePath = Join-Path $tmpDir $archiveName
   Write-Host "==> Downloading $archiveName"
-  Invoke-WebRequest -Uri $downloadUrl -OutFile $archivePath
+  try {
+    Invoke-WebRequest -Uri $downloadUrl -OutFile $archivePath
+  } catch {
+    throw @"
+Failed to download $archiveName from:
+  $downloadUrl
+
+The win32-$archSuffix bundle is missing from the GitHub release.
+This usually means the release exists, but not all platform bundles were uploaded.
+
+Workarounds:
+  - try again after the release finishes publishing
+  - install via npm instead: npm install -g @companion-ai/feynman
+  - install via pnpm instead: pnpm add -g @companion-ai/feynman
+  - install via bun instead: bun add -g @companion-ai/feynman
+"@
+  }
 
   New-Item -ItemType Directory -Path $installRoot -Force | Out-Null
   if (Test-Path $bundleDir) {

scripts/install/install.sh

@@ -222,7 +222,22 @@ trap cleanup EXIT INT TERM
 
 archive_path="$tmp_dir/$archive_name"
 step "Downloading ${archive_name}"
-download_file "$download_url" "$archive_path"
+if ! download_file "$download_url" "$archive_path"; then
+  cat >&2 <<EOF
+Failed to download ${archive_name} from:
+  ${download_url}
+
+The ${asset_target} bundle is missing from the GitHub release.
+This usually means the release exists, but not all platform bundles were uploaded.
+
+Workarounds:
+  - try again after the release finishes publishing
+  - install via npm instead: npm install -g @companion-ai/feynman
+  - install via pnpm instead: pnpm add -g @companion-ai/feynman
+  - install via bun instead: bun add -g @companion-ai/feynman
+EOF
+  exit 1
+fi
 
 mkdir -p "$INSTALL_APP_DIR"
 rm -rf "$INSTALL_APP_DIR/$bundle_name"

scripts/patch-embedded-pi.mjs

@@ -56,6 +56,61 @@ const workspaceDir = resolve(appRoot, ".feynman", "npm");
 const workspacePackageJsonPath = resolve(workspaceDir, "package.json");
 const workspaceArchivePath = resolve(appRoot, ".feynman", "runtime-workspace.tgz");
 
+function createInstallCommand(packageManager, packageSpecs) {
+	switch (packageManager) {
+		case "npm":
+			return ["install", "--prefer-offline", "--no-audit", "--no-fund", "--loglevel", "error", ...packageSpecs];
+		case "pnpm":
+			return ["add", "--prefer-offline", "--reporter", "silent", ...packageSpecs];
+		case "bun":
+			return ["add", "--silent", ...packageSpecs];
+		default:
+			throw new Error(`Unsupported package manager: ${packageManager}`);
+	}
+}
+
+let cachedPackageManager = undefined;
+
+function resolvePackageManager() {
+	if (cachedPackageManager !== undefined) return cachedPackageManager;
+
+	const requested = process.env.FEYNMAN_PACKAGE_MANAGER?.trim();
+	const candidates = requested ? [requested] : ["npm", "pnpm", "bun"];
+	for (const candidate of candidates) {
+		if (resolveExecutable(candidate)) {
+			cachedPackageManager = candidate;
+			return candidate;
+		}
+	}
+
+	cachedPackageManager = null;
+	return null;
+}
+
+function installWorkspacePackages(packageSpecs) {
+	const packageManager = resolvePackageManager();
+	if (!packageManager) {
+		process.stderr.write(
+			"[feynman] no supported package manager found; install npm, pnpm, or bun, or set FEYNMAN_PACKAGE_MANAGER.\n",
+		);
+		return false;
+	}
+
+	const result = spawnSync(packageManager, createInstallCommand(packageManager, packageSpecs), {
+		cwd: workspaceDir,
+		stdio: ["ignore", "ignore", "pipe"],
+		timeout: 300000,
+	});
+
+	if (result.status !== 0) {
+		if (result.stderr?.length) process.stderr.write(result.stderr);
+		process.stderr.write(`[feynman] ${packageManager} failed while setting up bundled packages.\n`);
+		return false;
+	}
+
+	return true;
+}
+
 function parsePackageName(spec) {
 	const match = spec.match(/^(@?[^@]+(?:\/[^@]+)?)(?:@.+)?$/);
 	return match?.[1] ?? spec;
@@ -81,17 +136,7 @@ function restorePackagedWorkspace(packageSpecs) {
 }
 
 function refreshPackagedWorkspace(packageSpecs) {
-	const result = spawnSync("npm", ["install", "--prefer-offline", "--no-audit", "--no-fund", "--loglevel", "error", "--prefix", workspaceDir, ...packageSpecs], {
-		stdio: ["ignore", "ignore", "pipe"],
-		timeout: 300000,
-	});
-
-	if (result.status !== 0) {
-		if (result.stderr?.length) process.stderr.write(result.stderr);
-		return false;
-	}
-
-	return true;
+	return installWorkspacePackages(packageSpecs);
 }
 
 function resolveExecutable(name, fallbackPaths = []) {
@@ -139,17 +184,13 @@ function ensurePackageWorkspace() {
 		process.stderr.write(`\r${frames[frame++ % frames.length]} setting up feynman... ${elapsed}s`);
 	}, 80);
 
-	const result = spawnSync("npm", ["install", "--prefer-offline", "--no-audit", "--no-fund", "--loglevel", "error", "--prefix", workspaceDir, ...packageSpecs], {
-		stdio: ["ignore", "ignore", "pipe"],
-		timeout: 300000,
-	});
+	const result = installWorkspacePackages(packageSpecs);
 
 	clearInterval(spinner);
 	const elapsed = Math.round((Date.now() - start) / 1000);
 
-	if (result.status !== 0) {
+	if (!result) {
 		process.stderr.write(`\r✗ setup failed (${elapsed}s)\n`);
-		if (result.stderr?.length) process.stderr.write(result.stderr);
 	} else {
 		process.stderr.write(`\r✓ feynman ready (${elapsed}s)\n`);
 	}