diff --git a/src/headless.ts b/src/headless.ts
index 950ba795e..6319c7337 100644
--- a/src/headless.ts
+++ b/src/headless.ts
@@ -855,6 +855,27 @@ async function runHeadlessOnce(
 		process.exit(exitCode);
 	}
 
+	// import-backlog: deterministic text→DB transform, no LLM or RPC child needed.
+	if (options.command === "import-backlog") {
+		const { runImportBacklog } = await import(
+			"./headless-import-backlog.js"
+		);
+		const filePath = options.commandArgs[0] ?? options.context;
+		if (!filePath) {
+			process.stderr.write(
+				"[headless] Error: import-backlog requires a file path as the first argument\n" +
+					"  Usage: sf headless import-backlog <file.md>\n",
+			);
+			process.exit(1);
+		}
+		const exitCode = await runImportBacklog(
+			resolve(filePath),
+			process.cwd(),
+			{ json: options.json },
+		);
+		process.exit(exitCode);
+	}
+
 	// Resolve CLI path for the child process
 	const cliPath = process.env.SF_BIN_PATH || process.argv[1];
 	if (!cliPath) {
@@ -1918,8 +1939,9 @@ async function runHeadlessOnce(
 		);
 	}
 
-	// Send the command
-	const command = `/sf ${options.command}${options.commandArgs.length > 0 ? " " + options.commandArgs.join(" ") : ""}`;
+	// Send the command — use bare /{subcommand} form so _tryExecuteExtensionCommand
+	// can look up the registered command directly without an "sf" namespace wrapper.
+	const command = `/${options.command}${options.commandArgs.length > 0 ? " " + options.commandArgs.join(" ") : ""}`;
 	try {
 		await waitForHeadlessExtensionCommands(client);
 		await client.prompt(command);
@@ -1962,7 +1984,7 @@ async function runHeadlessOnce(
 
 		try {
 			await waitForHeadlessExtensionCommands(client);
-			await client.prompt("/sf autonomous");
+			await client.prompt("/autonomous");
 		} catch (err) {
 			process.stderr.write(
 				`[headless] Error: Failed to start autonomous mode: ${err instanceof Error ? err.message : String(err)}\n`,