Initial commit: niri workspaces waybar module in Rust

Fast workspace visualization for waybar with:
- Color-coded windows by app (Chrome, Discord, Firefox, etc.)
- Terminal detection (Claude, Codex, nvim) via /proc
- Dimmed colors for unfocused workspaces
- Active window indicator (▌) for would-be-focused windows
- Parallel niri IPC calls for ~12ms execution time

1 files changed, 107 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..fda0e4e
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,107 @@
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