Switch remote deploy to vendored source builds

Move remote deployment to a vendored source bundle built on the target host via Docker so redeploys no longer require local cross-compilation or host Go installation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

vendor/github.com/samber/lo/mutable/slice.go

@@ -0,0 +1,23 @@
+package mutable
+
+import "github.com/samber/lo/internal/rand"
+
+// Shuffle returns an array of shuffled values. Uses the Fisher-Yates shuffle algorithm.
+// Play: https://go.dev/play/p/ZTGG7OUCdnp
+func Shuffle[T any, Slice ~[]T](collection Slice) {
+	rand.Shuffle(len(collection), func(i, j int) {
+		collection[i], collection[j] = collection[j], collection[i]
+	})
+}
+
+// Reverse reverses array so that the first element becomes the last, the second element becomes the second to last, and so on.
+// Play: https://go.dev/play/p/iv2e9jslfBM
+func Reverse[T any, Slice ~[]T](collection Slice) {
+	length := len(collection)
+	half := length / 2
+
+	for i := 0; i < half; i = i + 1 {
+		j := length - 1 - i
+		collection[i], collection[j] = collection[j], collection[i]
+	}
+}