diff --git a/.changeset/systemd-unit-unquoted-paths.md b/.changeset/systemd-unit-unquoted-paths.md
new file mode 100644
index 0000000..0351494
--- /dev/null
+++ b/.changeset/systemd-unit-unquoted-paths.md
@@ -0,0 +1,5 @@
+---
+"@smsunarto/bb-plugin-agent-proxy": patch
+---
+
+Emit `WorkingDirectory=`, `StandardOutput=`, and `StandardError=` unquoted in the generated systemd user unit. systemd rejects a quoted `WorkingDirectory=` as a fatal unit error, so the core service never loaded on Linux, and quoted output directives silently sent core logs to the journal instead of `core.log`.
diff --git a/plugins/agent-proxy/lib/core-process.ts b/plugins/agent-proxy/lib/core-process.ts
index 69b368f..b6b501c 100644
--- a/plugins/agent-proxy/lib/core-process.ts
+++ b/plugins/agent-proxy/lib/core-process.ts
@@ -500,10 +500,16 @@ interface SystemdJobInfo {
   exitCode: number | null;
 }
 
-function systemdQuote(value: string): string {
+function systemdValue(value: string): string {
   if (/\r|\n|\0/.test(value))
     throw new Error("systemd service values cannot contain control characters");
-  return `"${value.replaceAll("\\", "\\\\").replaceAll('"', '\\"').replaceAll("%", "%%")}"`;
+  return value.replaceAll("%", "%%");
+}
+
+// Quoting is only defined for command-line directives such as ExecStart=;
+// plain assignments like WorkingDirectory= take their value literally.
+function systemdQuote(value: string): string {
+  return `"${systemdValue(value).replaceAll("\\", "\\\\").replaceAll('"', '\\"')}"`;
 }
 
 export function renderSystemdUserUnit(options: {
@@ -513,7 +519,7 @@ export function renderSystemdUserUnit(options: {
   logPath: string;
 }): string {
   const command = [options.binPath, "--config", options.configPath].map(systemdQuote).join(" ");
-  const logTarget = systemdQuote(`append:${options.logPath}`);
+  const logTarget = systemdValue(`append:${options.logPath}`);
   return `[Unit]
 Description=Agent Proxy (${options.label})
 After=network-online.target
@@ -522,7 +528,7 @@ Wants=network-online.target
 [Service]
 Type=simple
 ExecStart=${command}
-WorkingDirectory=${systemdQuote(dirname(options.configPath))}
+WorkingDirectory=${systemdValue(dirname(options.configPath))}
 UMask=0077
 Restart=always
 RestartSec=2
diff --git a/plugins/agent-proxy/test/core-process.test.ts b/plugins/agent-proxy/test/core-process.test.ts
index 84dd95b..2501a63 100644
--- a/plugins/agent-proxy/test/core-process.test.ts
+++ b/plugins/agent-proxy/test/core-process.test.ts
@@ -360,6 +360,17 @@ test("renders and parses a persistent user systemd service", () => {
   assert.match(unit, /Restart=always/);
   assert.match(unit, /UMask=0077/);
   assert.match(unit, /ExecStart="\/home\/test\/Agent Proxy\/proxy" "--config"/);
+  assert.match(unit, /^WorkingDirectory=\/home\/test\/Agent Proxy$/m);
+  assert.match(unit, /^StandardOutput=append:\/home\/test\/Agent Proxy\/core\.log$/m);
+  assert.match(unit, /^StandardError=append:\/home\/test\/Agent Proxy\/core\.log$/m);
+  const percentUnit = renderSystemdUserUnit({
+    label: "com.example.proxy",
+    binPath: "/home/test/100% sure/proxy",
+    configPath: "/home/test/100% sure/config.yaml",
+    logPath: "/home/test/100% sure/core.log",
+  });
+  assert.match(percentUnit, /^WorkingDirectory=\/home\/test\/100%% sure$/m);
+  assert.match(percentUnit, /^StandardOutput=append:\/home\/test\/100%% sure\/core\.log$/m);
   assert.deepEqual(
     parseSystemctlShow(
       systemctlOutput({