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/internal/rand/ordered_go118.go

@@ -0,0 +1,26 @@
+//go:build !go1.22
+
+package rand
+
+import "math/rand"
+
+func Shuffle(n int, swap func(i, j int)) {
+	rand.Shuffle(n, swap)
+}
+
+func IntN(n int) int {
+	// bearer:disable go_gosec_crypto_weak_random
+	return rand.Intn(n)
+}
+
+func Int64() int64 {
+	// bearer:disable go_gosec_crypto_weak_random
+	n := rand.Int63()
+    
+	// bearer:disable go_gosec_crypto_weak_random
+	if rand.Intn(2) == 0 {
+		return -n
+	}
+
+	return n
+}

vendor/github.com/samber/lo/internal/rand/ordered_go122.go

@@ -0,0 +1,17 @@
+//go:build go1.22
+
+package rand
+
+import "math/rand/v2"
+
+func Shuffle(n int, swap func(i, j int)) {
+	rand.Shuffle(n, swap)
+}
+
+func IntN(n int) int {
+	return rand.IntN(n)
+}
+
+func Int64() int64 {
+	return rand.Int64()
+}