Fix design issues and add comprehensive test suite

Guard doSetup() against re-initialization, route welcome to onboard
wizard, fix import confirmation logic, remove invalid syncthing
generate flags, and show full export path. Add shell-based integration
test suite (123 tests) at ~/src/test/pal/ covering all commands.

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

cli/pal.lux

@@ -339,7 +339,7 @@ fn showInteractiveWelcome(): Unit with {Console, Process} = {
         "3" => showHelp(),
         _ => {
             print("")
-            doSetup()
+            doOnboard()
         }
     }
 }
@@ -371,7 +371,28 @@ fn createDirectories(): Unit with {Process} = {
     ensureDir(base + "/server")
 }
 
-fn doSetup(): Unit with {Process} = {
+fn doSetup(): Unit with {Console, Process} = {
+    print("")
+
+    if isInitialized() then {
+        printWarn("pal is already initialized on this device.")
+        print("")
+        let rerun = askConfirm("Re-run setup? This will overwrite your config.", false)
+        if rerun == false then {
+            print("")
+            printHint("No changes made.")
+            print("")
+            ()
+        } else {
+            print("")
+            doSetupSteps()
+        }
+    } else {
+        doSetupSteps()
+    }
+}
+
+fn doSetupSteps(): Unit with {Process} = {
     print("")
     printHeader("Setting up pal")
 
@@ -403,7 +424,7 @@ fn doSetup(): Unit with {Process} = {
     if hasCommand("syncthing") then {
         let hasConfig = execQuiet("test -f " + palDir() + "/syncthing/config/config.xml && echo yes || echo no")
         if hasConfig |> isNo then {
-            let ignore3 = Process.exec("syncthing generate --home=" + palDir() + "/syncthing/config --no-default-folder --gui-listen=127.0.0.1:8385 2>&1")
+            let ignore3 = Process.exec("syncthing generate --home=" + palDir() + "/syncthing/config 2>&1")
             printStep("Initializing sync", "done")
         } else {
             printStep("Initializing sync", "ready")
@@ -508,7 +529,7 @@ fn doSyncSetup(): Unit with {Process} = {
         let hasConfig = execQuiet("test -f " + palDir() + "/syncthing/config/config.xml && echo yes || echo no")
         if hasConfig |> isNo then {
             printStepPending("Creating config")
-            let ignore = Process.exec("syncthing generate --home=" + palDir() + "/syncthing/config --no-default-folder --gui-listen=127.0.0.1:8385 2>&1")
+            let ignore = Process.exec("syncthing generate --home=" + palDir() + "/syncthing/config 2>&1")
             printStep("Creating config", "done")
         } else {
             printStep("Creating config", "exists")
@@ -779,7 +800,7 @@ fn doExport(): Unit with {Console, Process} = {
         let fileSize = execQuiet("du -h " + exportPath + " | cut -f1")
         printStep("Creating archive", fileSize)
         print("")
-        printSuccess("Export created: " + exportFile)
+        printSuccess("Export created: " + exportPath)
         print("")
         printHint("Restore with:")
         printCmd("pal import " + exportFile)
@@ -814,11 +835,7 @@ fn doImport(archivePath: String): Unit with {Console, Process} = {
                 print("")
 
                 let confirmed = askConfirm("Continue?", false)
-                if confirmed == false then {
+                if confirmed then {
-                    print("")
-                    printHint("Import cancelled.")
-                    print("")
-                } else {
                     print("")
                     printHeader("Importing")
 
@@ -844,6 +861,10 @@ fn doImport(archivePath: String): Unit with {Console, Process} = {
                         printErr("Import failed - config not found in archive")
                     }
                     print("")
+                } else {
+                    print("")
+                    printHint("Import cancelled.")
+                    print("")
                 }
             } else {
                 // No existing data, proceed without confirmation
@@ -1339,7 +1360,7 @@ fn doOnboardSteps(): Unit with {Console, Process} = {
             let hasConfig = execQuiet("test -f " + palDir() + "/syncthing/config/config.xml && echo yes || echo no")
             if hasConfig |> isNo then {
                 printStepPending("Creating sync config")
-                let ignore11 = Process.exec("syncthing generate --home=" + palDir() + "/syncthing/config --no-default-folder --gui-listen=127.0.0.1:8385 2>&1")
+                let ignore11 = Process.exec("syncthing generate --home=" + palDir() + "/syncthing/config 2>&1")
                 printStep("Creating sync config", "done")
             } else {
                 printStep("Creating sync config", "exists")

flake.lock

@@ -47,13 +47,13 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1771221263,
+        "lastModified": 1771638380,
-        "narHash": "sha256-Av4s4pelV+ueIMSY61aHuT8KjKZ6ekXtJsnjVc89gtQ=",
+        "narHash": "sha256-RLGfahDSlYi8ec50DtmfOZn9q8JpF2xBTcUb8K2ZQ3Q=",
-        "path": "/home/blu/src/lux",
+        "path": "/home/blu/src/lux/lang",
         "type": "path"
       },
       "original": {
-        "path": "/home/blu/src/lux",
+        "path": "/home/blu/src/lux/lang",
         "type": "path"
       }
     },

flake.nix

@@ -15,7 +15,7 @@
     };
 
     lux = {
-      url = "path:/home/blu/src/lux";
+      url = "path:/home/blu/src/lux/lang";
       inputs.nixpkgs.follows = "nixpkgs";
     };