fix(gui): correct relative import that broke app startup — 0.18.2

The recording indicator (0.18.0) used `from .core import diagnostic`, which
resolves to the non-existent rigdoctor.gui.core and crashed MainWindow on launch.
Fixed to `from ..core import diagnostic`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to RigDoctor are recorded here. Format follows
 (`MAJOR.MINOR.PATCH`, pre-1.0). `__version__` and `pyproject.toml` must match the git
 release tag (so the auto-updater, D18, can compare versions).
 
+## [0.18.2] - 2026-05-22
+### Fixed
+- **GUI wouldn't start** (0.18.0 regression): the recording indicator used a wrong relative
+  import (`from .core` → `rigdoctor.gui.core`, which doesn't exist), crashing `MainWindow` on
+  launch. Corrected to `from ..core`.
+
 ## [0.18.1] - 2026-05-22
 ### Changed
 - Recording badge: dropped the sample count (not useful at a glance) — it now shows just

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "rigdoctor"
-version = "0.18.1"
+version = "0.18.2"
 description = "Modular hardware monitoring & crash diagnostics for Linux gamers."
 readme = "README.md"
 requires-python = ">=3.11"

src/rigdoctor/__init__.py

@@ -1,3 +1,3 @@
 """RigDoctor — modular hardware monitoring & crash diagnostics for Linux gamers."""
 
-__version__ = "0.18.1"
+__version__ = "0.18.2"

src/rigdoctor/gui/main_window.py

@@ -263,7 +263,7 @@ class MainWindow(QMainWindow):
         self.inventory_page._run()
 
     def _update_recording(self) -> None:
-        from .core import diagnostic
+        from ..core import diagnostic
 
         status = diagnostic.active()
         if not status: