diff --git a/addons/vest/cli/vest-cli-runner.gd b/addons/vest/cli/vest-cli-runner.gd
index 438b5a7..d4652fd 100644
--- a/addons/vest/cli/vest-cli-runner.gd
+++ b/addons/vest/cli/vest-cli-runner.gd
@@ -31,6 +31,7 @@ func run(params: VestCLI.Params) -> int:
 
 func _run_tests(params: VestCLI.Params) -> VestResult.Suite:
 	var runner := VestLocalRunner.new()
+	runner.log_file = params.log_file
 	runner.on_partial_result.connect(func(result: VestResult.Suite):
 		if _peer != null:
 			if result != null:
diff --git a/addons/vest/cli/vest-cli.gd b/addons/vest/cli/vest-cli.gd
index 6b4ac5b..5ae523e 100644
--- a/addons/vest/cli/vest-cli.gd
+++ b/addons/vest/cli/vest-cli.gd
@@ -28,6 +28,9 @@ class Params:
 	## Port to connect to for sending results
 	var port: int = -1
 
+	## Log file path for capturing push_error output
+	var log_file: String = ""
+
 	## Validate parameters.
 	## [br][br]
 	## Returns an array of error messages, or an empty array of the parameters
@@ -52,6 +55,7 @@ class Params:
 		if report_file: result.append_array(["--vest-report-file", report_file])
 		if host: result.append_array(["--vest-host", host])
 		if port != -1: result.append_array(["--vest-port", str(port)])
+		if log_file: result.append_array(["--vest-log-file", log_file])
 
 		match only_mode:
 			Vest.__.ONLY_DISABLED: result.append("--no-only")
@@ -76,17 +80,33 @@ class Params:
 			elif arg == "--vest-report-format": result.report_format = val
 			elif arg == "--vest-port": result.port = val.to_int()
 			elif arg == "--vest-host": result.host = val
+			elif arg == "--vest-log-file": result.log_file = val
 			elif arg == "--no-only": result.only_mode = Vest.__.ONLY_DISABLED
 			elif arg == "--only": result.only_mode = Vest.__.ONLY_ENABLED
 			elif arg == "--auto-only": result.only_mode = Vest.__.ONLY_AUTO
 
 		return result
 
+static func uuid4() -> String:
+	var b := PackedByteArray()
+	b.resize(16)
+	for i in 16:
+		b[i] = randi() & 0xff
+	b[6] = (b[6] & 0x0f) | 0x40
+	b[8] = (b[8] & 0x3f) | 0x80
+	return "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x" % [
+		b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
+		b[8], b[9], b[10], b[11], b[12], b[13], b[14], b[15]]
+
 ## Run vest CLI with parameters.
 ## [br][br]
 ## Returns the spawned process' ID.
 static func run(params: Params) -> int:
-	var args = ["--headless", "-s", (VestCLI as Script).resource_path]
+	var log_dir := ProjectSettings.globalize_path("user://unit-tests")
+	DirAccess.make_dir_recursive_absolute(log_dir)
+	var log_path := log_dir.path_join("%s.log" % uuid4())
+	params.log_file = log_path
+	var args = ["--headless", "--log-file", log_path, "-s", (VestCLI as Script).resource_path]
 	return OS.create_instance(args + params.to_args())
 
 ## Run vest in debug mode.
@@ -103,6 +123,20 @@ func _init():
 	await process_frame
 
 	var params := Params.parse(OS.get_cmdline_args())
+
+	# Auto-detect log file if not explicitly provided
+	if params.log_file.is_empty():
+		# Check if --log-file was passed as a Godot engine arg
+		var engine_args := OS.get_cmdline_args()
+		for i in range(engine_args.size()):
+			if engine_args[i] == "--log-file" and i + 1 < engine_args.size():
+				params.log_file = engine_args[i + 1]
+				break
+		# Fall back to Godot's default log path
+		if params.log_file.is_empty():
+			params.log_file = ProjectSettings.globalize_path(
+				ProjectSettings.get_setting("debug/file_logging/log_path", "user://logs/godot.log"))
+
 	var runner := VestCLIRunner.new()
 
 	var exit_code := await runner.run(params)
diff --git a/addons/vest/plugin.gd b/addons/vest/plugin.gd
index 862b31f..479c6f2 100644
--- a/addons/vest/plugin.gd
+++ b/addons/vest/plugin.gd
@@ -2,6 +2,7 @@
 extends EditorPlugin
 
 var bottom_control: Control
+var status_indicator: Control
 
 static var SETTINGS := [
 	{
@@ -53,7 +54,17 @@ func _enter_tree():
 	add_control_to_bottom_panel(bottom_control, "Vest")
 
 	add_settings(SETTINGS)
-	
+
+	# Status indicator (bottom-right overlay, auto-runs tests on save)
+	status_indicator = preload("res://addons/vest/ui/vest-status-indicator.gd").new()
+	var base := EditorInterface.get_base_control()
+	base.add_child(status_indicator)
+	status_indicator.set_anchors_and_offsets_preset(
+		Control.PRESET_BOTTOM_RIGHT, Control.PRESET_MODE_KEEP_SIZE, 12)
+	status_indicator.grow_horizontal = Control.GROW_DIRECTION_BEGIN
+	status_indicator.grow_vertical = Control.GROW_DIRECTION_BEGIN
+	resource_saved.connect(status_indicator.handle_resource_saved)
+
 	# Create commands
 	for command in Vest.__.create_commands():
 		add_child(command)
@@ -63,6 +74,9 @@ func _exit_tree():
 	remove_control_from_bottom_panel(bottom_control)
 	bottom_control.queue_free()
 
+	resource_saved.disconnect(status_indicator.handle_resource_saved)
+	status_indicator.queue_free()
+
 	remove_settings(SETTINGS)
 
 func add_settings(settings: Array):
diff --git a/addons/vest/runner/vest-local-runner.gd b/addons/vest/runner/vest-local-runner.gd
index c827a44..cf4cb9e 100644
--- a/addons/vest/runner/vest-local-runner.gd
+++ b/addons/vest/runner/vest-local-runner.gd
@@ -2,6 +2,8 @@ extends "res://addons/vest/runner/vest-base-runner.gd"
 class_name VestLocalRunner
 
 var _result_buffer: VestResult.Suite
+var log_file: String = ""
+var _log_offset: int = 0
 
 ## Run a test script
 func run_script(script: Script, only_mode: int = Vest.__.ONLY_DEFAULT) -> VestResult.Suite:
@@ -90,14 +92,72 @@ func _run_case(case: VestDefs.Case, test_instance: VestTest, run_only: bool, is_
 	if run_only and not case.is_only and not is_parent_only:
 		return null
 
+	_mark_log_position()
 	await test_instance._begin(case)
 	await case.callback.call()
 	await test_instance._finish(case)
+	_check_log_for_errors(test_instance)
 
 	on_partial_result.emit(_result_buffer)
 
 	return test_instance._get_result()
 
+func _mark_log_position() -> void:
+	if log_file.is_empty():
+		return
+	var fa := FileAccess.open(log_file, FileAccess.READ)
+	if fa:
+		fa.seek_end()
+		_log_offset = fa.get_position()
+
+func _check_log_for_errors(test_instance: VestTest) -> void:
+	if log_file.is_empty():
+		return
+	var fa := FileAccess.open(log_file, FileAccess.READ)
+	if not fa:
+		return
+	if fa.get_length() <= _log_offset:
+		return
+	fa.seek(_log_offset)
+	var new_content := fa.get_buffer(fa.get_length() - _log_offset).get_string_from_utf8()
+	var errors := _parse_gdscript_errors(new_content)
+	if not errors.is_empty():
+		var msg := "\n".join(errors)
+		test_instance.fail("push_error during test:\n" + msg)
+		for err in errors:
+			print_rich("[color=red]VEST ERROR:[/color] %s — in [b]%s[/b]" % [err, test_instance._result.case.description])
+
+## Parse log content and return only errors with a GDScript backtrace or SCRIPT ERROR.
+## Filters out pure engine/renderer errors (null material, RID, etc.) that are
+## false positives in headless mode.
+static func _parse_gdscript_errors(content: String) -> PackedStringArray:
+	var errors: PackedStringArray = []
+	var lines := content.split("\n")
+	var i := 0
+	while i < lines.size():
+		var line := lines[i].strip_edges()
+		if line.begins_with("SCRIPT ERROR:"):
+			errors.append(line)
+			i += 1
+		elif line.begins_with("ERROR:"):
+			# Look ahead: does this error block have a GDScript backtrace?
+			var has_backtrace := false
+			var j := i + 1
+			while j < lines.size():
+				var next := lines[j].strip_edges()
+				if next.is_empty() or next.begins_with("ERROR:") or next.begins_with("SCRIPT ERROR:") or next.begins_with("WARNING:"):
+					break
+				if next.contains("GDScript backtrace"):
+					has_backtrace = true
+					break
+				j += 1
+			if has_backtrace:
+				errors.append(line)
+			i = j
+		else:
+			i += 1
+	return errors
+
 func _run_suite(result: VestResult.Suite, suite: VestDefs.Suite, test_instance: VestTest, run_only: bool, is_parent_only: bool = false) -> VestResult.Suite:
 	if run_only and not suite.has_only() and not is_parent_only:
 		return null
diff --git a/addons/vest/ui/vest-status-indicator.gd b/addons/vest/ui/vest-status-indicator.gd
new file mode 100644
index 0000000..158dff0
--- /dev/null
+++ b/addons/vest/ui/vest-status-indicator.gd
@@ -0,0 +1,116 @@
+@tool
+extends PanelContainer
+
+## Persistent status indicator that auto-runs tests after script reloads.
+## Shows pass/fail count in the bottom-right corner of the editor.
+
+const DEBOUNCE_SEC := 20.0
+
+var _timer: Timer
+var _label: Label
+var _icon: TextureRect
+var _running := false
+
+func _ready() -> void:
+	z_index = 100
+
+	# Dark semi-transparent background
+	var style := StyleBoxFlat.new()
+	style.bg_color = Color(0.15, 0.15, 0.15, 0.9)
+	style.corner_radius_top_left = 4
+	style.corner_radius_top_right = 4
+	style.corner_radius_bottom_left = 4
+	style.corner_radius_bottom_right = 4
+	style.content_margin_left = 8
+	style.content_margin_right = 8
+	style.content_margin_top = 4
+	style.content_margin_bottom = 4
+	add_theme_stylebox_override("panel", style)
+
+	_timer = Timer.new()
+	_timer.one_shot = true
+	_timer.wait_time = DEBOUNCE_SEC
+	_timer.timeout.connect(_on_timer_timeout)
+	add_child(_timer)
+
+	var hbox := HBoxContainer.new()
+	hbox.add_theme_constant_override("separation", 6)
+
+	_icon = TextureRect.new()
+	_icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
+	_icon.custom_minimum_size = Vector2(16, 16)
+	hbox.add_child(_icon)
+
+	_label = Label.new()
+	_label.text = "tests: --"
+	hbox.add_child(_label)
+
+	var run_btn := Button.new()
+	run_btn.text = "Run Now"
+	run_btn.flat = true
+	run_btn.pressed.connect(_on_run_now_pressed)
+	hbox.add_child(run_btn)
+
+	add_child(hbox)
+
+
+func handle_resource_saved(resource: Resource) -> void:
+	if not resource is Script:
+		return
+	_timer.start(DEBOUNCE_SEC)
+
+
+func _on_run_now_pressed() -> void:
+	_timer.stop()
+	if not _running:
+		_run_tests()
+
+
+func _on_timer_timeout() -> void:
+	if _running:
+		return
+	_run_tests()
+
+
+func _run_tests() -> void:
+	_running = true
+	_label.text = "running..."
+	_label.remove_theme_color_override("font_color")
+	_icon.texture = null
+
+	var runner := VestDaemonRunner.new()
+	var glob_pattern: String = Vest.__.LocalSettings.test_glob
+	if glob_pattern.is_empty() or glob_pattern == "res://*.test.gd":
+		glob_pattern = "res://addons/map_generator/test/*.test.gd"
+
+	var results: VestResult.Suite = await runner.run_glob(glob_pattern)
+	_running = false
+
+	if results == null:
+		_label.text = "ERR"
+		_label.add_theme_color_override("font_color", Color(1.0, 0.5, 0.0))
+		return
+
+	var passed := _count_recursive(results, VestResult.TEST_PASS)
+	var failed := _count_recursive(results, VestResult.TEST_FAIL)
+	var total := results.size()
+
+	_label.text = "%d/%d" % [passed, total]
+
+	if failed > 0:
+		_icon.texture = Vest.Icons.result_fail
+		_label.add_theme_color_override("font_color", Color(1.0, 0.3, 0.3))
+	else:
+		_icon.texture = Vest.Icons.result_pass
+		_label.add_theme_color_override("font_color", Color(0.3, 1.0, 0.3))
+
+
+## Recursively count all cases with a given status across the entire suite tree.
+static func _count_recursive(suite: VestResult.Suite, status: int) -> int:
+	var count := 0
+	for c: VestResult.Case in suite.cases:
+		if c.status == status:
+			count += 1
+	for s: VestResult.Suite in suite.subsuites:
+		count += _count_recursive(s, status)
+	return count
diff --git a/addons/vest/ui/vest-status-indicator.gd.uid b/addons/vest/ui/vest-status-indicator.gd.uid
new file mode 100644
index 0000000..ffe2351
--- /dev/null
+++ b/addons/vest/ui/vest-status-indicator.gd.uid
@@ -0,0 +1 @@
+uid://et5uijepnhvo