feat: implement global page navigation progress bar using Radix UI

components/page-progress.tsx

@@ -0,0 +1,84 @@
+"use client"
+
+import { Suspense, useEffect, useState } from "react"
+import { usePathname, useSearchParams } from "next/navigation"
+import { Progress } from "@/components/ui/progress"
+
+function PageProgressContent() {
+  const pathname = usePathname()
+  const searchParams = useSearchParams()
+  const [progress, setProgress] = useState(0)
+  const [isVisible, setIsVisible] = useState(false)
+
+  // Start progress on click
+  useEffect(() => {
+    const handleClick = (e: MouseEvent) => {
+      const target = (e.target as HTMLElement).closest("a")
+      if (!target) return
+      
+      const href = target.getAttribute("href")
+      if (!href) return
+      
+      // Check if it's an internal link
+      const isInternal = href.startsWith("/") || href.startsWith(window.location.origin)
+      const isSamePage = href === window.location.pathname || href.startsWith(window.location.pathname + "#") || href === window.location.href
+      
+      // Only show progress for actual page transitions
+      if (isInternal && !isSamePage && target.getAttribute("target") !== "_blank") {
+        setIsVisible(true)
+        setProgress(15)
+        
+        // Simulate progress while waiting for route change
+        // Uses a decaying approach so it slows down as it gets closer to 95%
+        const interval = setInterval(() => {
+          setProgress((prev) => {
+            if (prev >= 95) {
+              clearInterval(interval)
+              return prev
+            }
+            return prev + (95 - prev) * 0.1
+          })
+        }, 100)
+        
+        // Store interval so we can clear it on route change
+        ;(window as any).__page_progress_interval = interval
+      }
+    }
+
+    document.addEventListener("click", handleClick)
+    return () => document.removeEventListener("click", handleClick)
+  }, [])
+
+  // Finish progress on route change
+  useEffect(() => {
+    if (typeof window !== "undefined" && (window as any).__page_progress_interval) {
+      clearInterval((window as any).__page_progress_interval)
+    }
+    
+    if (isVisible) {
+      setProgress(100)
+      const timeout = setTimeout(() => {
+        setIsVisible(false)
+        setTimeout(() => setProgress(0), 300) // Reset after hiding
+      }, 400)
+      return () => clearTimeout(timeout)
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [pathname, searchParams])
+
+  if (!isVisible && progress === 0) return null
+
+  return (
+    <div className="fixed top-0 left-0 w-full z-50 pointer-events-none">
+      <Progress value={progress} className="h-1 w-full rounded-none bg-transparent" />
+    </div>
+  )
+}
+
+export function PageProgress() {
+  return (
+    <Suspense fallback={null}>
+      <PageProgressContent />
+    </Suspense>
+  )
+}

components/ui/progress.tsx

@@ -0,0 +1,31 @@
+"use client"
+
+import * as React from "react"
+import { Progress as ProgressPrimitive } from "radix-ui"
+
+import { cn } from "@/lib/utils"
+
+function Progress({
+  className,
+  value,
+  ...props
+}: React.ComponentProps<typeof ProgressPrimitive.Root>) {
+  return (
+    <ProgressPrimitive.Root
+      data-slot="progress"
+      className={cn(
+        "relative flex h-3 w-full items-center overflow-x-hidden rounded-4xl bg-muted",
+        className
+      )}
+      {...props}
+    >
+      <ProgressPrimitive.Indicator
+        data-slot="progress-indicator"
+        className="size-full flex-1 bg-primary transition-all"
+        style={{ transform: `translateX(-${100 - (value || 0)}%)` }}
+      />
+    </ProgressPrimitive.Root>
+  )
+}
+
+export { Progress }