fix(gui): style radio buttons + checkbox states in the setup wizard — 0.26.1

QRadioButton was unstyled, so the selected trigger option was invisible on the
dark theme. Added QRadioButton::indicator styling (accent ring + center dot when
checked) and explicit QCheckBox :checked/:disabled states. Bundle checkboxes stay
selectable even when already installed so the page isn't dead when all deps are
present.

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

src/rigdoctor/__init__.py

@@ -1,3 +1,3 @@
 """RigDoctor — modular hardware monitoring & crash diagnostics for Linux gamers."""
 
-__version__ = "0.26.0"
+__version__ = "0.26.1"

src/rigdoctor/gui/setup_wizard.py

@@ -117,7 +117,7 @@ class SetupWizard(QDialog):
             tag = " — all installed ✓" if not missing else f" — {len(missing)} to install"
             cb = QCheckBox(f"{bundle}: {names}{tag}")
             cb.setChecked(bool(missing))  # default-check bundles with something to add
-            cb.setEnabled(bool(missing) and sysenv.package_manager() == "apt")
+            cb.setEnabled(sysenv.package_manager() == "apt")  # selectable even if already installed
             self._bundle_checks[bundle] = cb
             v.addWidget(cb)
         if sysenv.package_manager() != "apt":

src/rigdoctor/gui/theme.py

@@ -144,6 +144,24 @@ QCheckBox::indicator:hover {{ border-color: {ACCENT}; }}
 QCheckBox::indicator:checked {{
     background: {ACCENT}; border-color: {ACCENT}; image: url("{_CHECK}");
 }}
+QCheckBox::indicator:disabled {{ border-color: #3a414d; background: #1c2026; }}
+QCheckBox::indicator:checked:disabled {{ background: #2a6175; border-color: #2a6175; }}
+QCheckBox:disabled {{ color: {MUTED}; }}
+
+/* Radio buttons — same dark treatment as checkboxes; the selected one gets a clear
+   accent dot (Fusion leaves these unstyled = the selection is invisible on dark). */
+QRadioButton {{ spacing: 8px; background: transparent; }}
+QRadioButton::indicator {{
+    width: 17px; height: 17px; border-radius: 9px;
+    border: 1px solid {MUTED}; background: #262b34;
+}}
+QRadioButton::indicator:hover {{ border-color: {ACCENT}; }}
+QRadioButton::indicator:checked {{
+    border: 1px solid {ACCENT};
+    background: qradialgradient(cx:0.5, cy:0.5, radius:0.5, fx:0.5, fy:0.5,
+        stop:0 {ACCENT}, stop:0.5 {ACCENT}, stop:0.55 #262b34, stop:1 #262b34);
+}}
+QRadioButton:disabled {{ color: {MUTED}; }}
 
 /* Dialogs (update prompt, changelog) — match the dark theme so text is readable. */
 QDialog {{ background: {BG}; }}