Add image paste support for Claude Code CLI with Z.AI vision MCP

Add clipboard image helper scripts to enable easy image paste functionality
in Claude Code CLI using the Z.AI vision MCP server.

Features:
- clippaste-image: Simple clipboard image extractor (Wayland/X11)
- clipimage-paste: Advanced handler with JSON/base64/watch modes
- IMAGE-PASTE-README.md: Complete documentation

Integration:
- Works with Ctrl+V in Claude Code CLI
- Automatic Wayland (wl-paste) and X11 (xclip) detection
- Z.AI MCP server provides 8 vision analysis tools

Usage:
  clippaste-image                    # Paste to temp file
  clippaste-image ~/screenshot.png   # Paste to specific file
  clipimage-paste --json             # Get JSON with metadata
  clipimage-paste --watch            # Watch for new images

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

bin/clippaste-image

@@ -0,0 +1,79 @@
+#!/bin/bash
+# clippaste-image - Paste clipboard image to temp file for Claude Code
+# Usage: clippaste-image [output-path]
+#
+# This script extracts image data from the clipboard and saves it to a file.
+# Works with both Wayland (wl-paste) and X11 (xclip).
+#
+# Examples:
+#   clippaste-image                    # Saves to /tmp/clipboard-image.png
+#   clippaste-image ~/screenshot.png   # Saves to specified path
+#   clippaste-image -                  # Outputs file path to stdout only
+#
+# Claude Code Integration:
+#   Simply press Ctrl+V in Claude Code CLI, or use this script directly.
+
+set -e
+
+OUTPUT_PATH="${1:-/tmp/clipboard-image.png}"
+STDOUT_ONLY=false
+
+if [[ "$OUTPUT_PATH" == "-" ]]; then
+    OUTPUT_PATH="/tmp/clipboard-image-$(date +%s).png"
+    STDOUT_ONLY=true
+fi
+
+# Create temp directory if needed
+mkdir -p "$(dirname "$OUTPUT_PATH")"
+
+# Try Wayland first (wl-paste)
+if command -v wl-paste &> /dev/null; then
+    # Check if Wayland display is available
+    if [[ -n "$WAYLAND_DISPLAY" ]] || wl-paste --type text &> /dev/null; then
+        # Try to get image from clipboard
+        if wl-paste --type image/png > "$OUTPUT_PATH" 2>/dev/null; then
+            # Verify we got actual image data (not empty)
+            if [[ -s "$OUTPUT_PATH" ]]; then
+                if [[ "$STDOUT_ONLY" == true ]]; then
+                    echo "$OUTPUT_PATH"
+                else
+                    echo "✓ Image saved to: $OUTPUT_PATH"
+                    echo "  Size: $(du -h "$OUTPUT_PATH" | cut -f1)"
+                fi
+                exit 0
+            fi
+        fi
+    fi
+fi
+
+# Fallback to X11 (xclip)
+if command -v xclip &> /dev/null; then
+    if [[ -n "$DISPLAY" ]]; then
+        # Try to get image from X11 clipboard
+        if xclip -selection clipboard -t image/png -o > "$OUTPUT_PATH" 2>/dev/null; then
+            if [[ -s "$OUTPUT_PATH" ]]; then
+                if [[ "$STDOUT_ONLY" == true ]]; then
+                    echo "$OUTPUT_PATH"
+                else
+                    echo "✓ Image saved to: $OUTPUT_PATH"
+                    echo "  Size: $(du -h "$OUTPUT_PATH" | cut -f1)"
+                fi
+                exit 0
+            fi
+        fi
+    fi
+fi
+
+# No image found in clipboard
+if [[ "$STDOUT_ONLY" == true ]]; then
+    exit 1
+else
+    echo "✗ No image found in clipboard" >&2
+    echo ""
+    echo "Tips:"
+    echo "  - Take a screenshot first (gnome-screenshot -a -c)"
+    echo "  - Copy an image from your file manager or browser"
+    echo "  - On Wayland: ensure wl-paste can access your compositor"
+    echo "  - On X11: ensure xclip can access the X server"
+    exit 1
+fi