chore: repo cleanup for v0.2.0

- Fix read_cpu_temp loop: ok()? was aborting iteration on unreadable hwmon
  entries instead of continuing to the next; use let Ok(...) else continue
- Fix osd.rs: replace stdout.unwrap() with defensive let-else guard
- PKGBUILD: bump pkgver to 0.2.0, replace libpulse dep with wireplumber +
  pipewire-pulse + brightnessctl (actual runtime tools used)
- bakery.toml: same dep fix as PKGBUILD
- Cargo.toml: fix repository URL casing (breadway -> Breadway)
- theme.rs: add wifi-popover-row-unsaved opacity rule

src/theme.rs

@@ -48,6 +48,7 @@ fn load_css() -> String {
              border-radius: 4px; padding: 2px 6px; }}\
          .wifi-popover-row:hover {{ background: alpha({on_bg}, 0.08); }}\
          .wifi-popover-row-active {{ color: {accent}; }}\
+         .wifi-popover-row-unsaved {{ opacity: 0.4; }}\
          .wifi-popover-loading {{ opacity: 0.5; padding: 8px; }}\
          .media-widget {{ border-radius: 4px; padding: 0 6px; cursor: pointer; }}\
          .media-widget:hover {{ background: alpha({on_bg}, 0.10); }}\