fix: add PATH environment variable to launchd plist

Add EnvironmentVariables to plist so commands can be found when
the service runs at login.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cmd/picoclaw/main.go

@@ -1536,6 +1536,7 @@ func findExecutable() (string, error) {
 
 // generatePlist generates the plist content for launch agent
 func generatePlist(execPath string) string {
+	home := os.Getenv("HOME")
 	return fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
@@ -1551,8 +1552,13 @@ func generatePlist(execPath string) string {
     <true/>
     <key>KeepAlive</key>
     <true/>
+    <key>EnvironmentVariables</key>
+    <dict>
+        <key>PATH</key>
+        <string>/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:%s/.local/bin:%s/bin</string>
+    </dict>
 </dict>
-</plist>`, execPath)
+</plist>`, execPath, home, home)
 }
 
 // uninstallInstall uninstalls the launch agent