Add Configurable Status Bar Widgets

[JonathanRiche]

I used Opus after i did a review of whats needed(fed it a plan.md file on how prise widgets could work)

Here's the whole session/chat : https://opncd.ai/share/PBAUOlj1

Changes:

1. Added new Zig APIs (src/ui.zig):
   • prise.get_battery() - Returns {percent, charging} table or nil (supports macOS via pmset and Linux via /sys/class/power_supply)
   • prise.get_hostname() - Returns system hostname
   • prise.exec() - Executes shell commands with optional timeout
2. Created widget system in Lua (src/lua/tiling.lua):
   • Widget registry with built-in widgets: mode, git, zoom, time, battery, hostname
   • Shell command widgets for custom data (e.g., weather)
   • Per-widget refresh intervals via timers
   • Auto-hide widgets when data unavailable (e.g., battery on desktop)
   • Support for left, center, and right sections
3. Updated documentation (docs/prise.5.md):
   • Full documentation of widget configuration
   • Examples for built-in widgets, shell widgets, and custom render functions
4. Battery level icons: Added 10 different battery icons based on charge percentage (both charging and discharging states).
   Git Commits Made
   16ec408 feat(battery): show charge level icons based on percentage
   f4d8cb8 feat: add customizable status bar widget system
   Files Modified

• src/ui.zig - New Lua API bindings
• src/lua/tiling.lua - Widget system implementation
• docs/prise.5.md - Documentation
  Example User Configuration

ui.setup({
    status_bar = {
        widgets = {
            left = { "mode", "git", "zoom" },
            center = { "hostname" },
            right = {
                { type = "shell", command = "curl -s 'wttr.in?format=1'", interval = 600000, icon = "" },
                "battery",
                "time",
            },
        },
    },
})

What Could Be Done Next

1. Async shell execution for shell widgets to avoid blocking
2. CPU/Memory widgets (APIs exist in plan but not implemented)
3. Shell command caching with TTL (partially implemented in Lua, could be moved to Zig)
4. More battery icons or color changes for low battery warning

[JonathanRiche]

Fixed the issue with powerline symbols latest session with opencode as well : https://opncd.ai/share/zfK2yfuP