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

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PxgMEoa2PWNkKnW88pbMBM

Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 description = "Minimal status bar and notification daemon for Hyprland on Wayland"
 license = "MIT"
 authors = ["Breadway <rileyhorsham@gmail.com>"]
-repository = "https://github.com/breadway/breadbar"
+repository = "https://github.com/Breadway/breadbar"
 keywords = ["wayland", "hyprland", "bar", "status-bar", "gtk4"]
 categories = ["gui"]