zsh: add pv-backed mv/cp wrappers with progress and dir creation

Override mv and cp to pipe large transfers through pv for progress.
Directories are streamed via tar+pv; single files go through pv
directly. Parent directories are created (mkdir -p) when the
destination path doesn't exist yet.

zsh/.zshrc

@@ -139,3 +139,62 @@ alias pip=pip3
 . "/home/sammieo/.deno/env"
 
 export LC_ALL="en_US.UTF-8"
+
+# Make sure no alias hides the real mv / cp
+unalias mv 2>/dev/null
+unalias cp 2>/dev/null
+
+# Custom 'move' command that incorporates the pv command
+mv() {
+    if (( $# > 2 )); then
+        command mv "$@"
+        return
+    fi
+
+    local src=$1 dest=$2
+
+    if [ -d "$src" ]; then
+        mkdir -p "$dest"
+
+        # Total size in bytes (du -sb)
+        local total=$(du -sb "$src" | awk '{print $1}')
+
+        # Pipe through pv and extract at destination
+        tar -cf - -C "$(dirname "$src")" "$(basename "$src")" |
+            pv -s "$total" |
+            tar -xf - -C "$dest"
+
+        # Remove the original directory
+        rm -rf "$src"
+    else
+        mkdir -p "$(dirname "$dest")"
+        command mv "$@"
+    fi
+}
+
+# Custom 'cp' command that incorporates the pv command
+cp() {
+    if (( $# > 2 )); then
+        command cp "$@"
+        return
+    fi
+
+    local src=$1 dst=$2
+
+    if [ -d "$src" ]; then
+        mkdir -p "$dst"
+
+        # ---- 1️⃣ Total size of the directory ---------------------------------
+        local total=$(du -sb "$src" | awk '{print $1}')
+
+        # ---- 2️⃣ Stream the dir through pv into the destination ---------------
+        tar -cf - -C "$(dirname "$src")" "$(basename "$src")" |
+            pv -s "$total" |
+            tar -xf - -C "$dst"
+    else
+        # ---- 3️⃣ Single file -------------------------------------------------
+        mkdir -p "$(dirname "$dst")"
+        local fsize=$(stat -c%s "$src" 2>/dev/null || wc -c <"$src")
+        pv -s "$fsize" < "$src" > "$dst"
+    fi
+}