Ask for grapho repo URL and copy instructions to clipboard

- Prompt for grapho flake URL and branch (defaults to master)
- Substitute into nix run commands in output
- Auto-copy instructions to clipboard (xclip/wl-copy/pbcopy)
- Apply same changes to both setup_new and setup_join

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

setup

@@ -72,6 +72,19 @@ setup_new() {
     echo -e "${BOLD}Setting up first device...${NC}"
     echo ""
 
+    # Ask for grapho repo URL and branch
+    echo -n "Your grapho flake repo URL (e.g., https://github.com/you/grapho): "
+    read -r grapho_url
+    [[ -z "$grapho_url" ]] && { err "Repo URL is required"; exit 1; }
+
+    echo -n "Branch [master]: "
+    read -r grapho_branch
+    grapho_branch="${grapho_branch:-master}"
+
+    # Build nix run command
+    local nix_run_cmd="nix run 'git+${grapho_url}?ref=${grapho_branch}'"
+
+    echo ""
     mkdir -p "$USYNC_DIR"
 
     # Generate age key
@@ -111,12 +124,23 @@ EOF
         git -C "$config_dir" commit -q --no-gpg-sign -m "Initial setup"
     fi
 
+    local age_key
+    age_key=$(grep 'AGE-SECRET-KEY' "$AGE_KEY_FILE")
+
+    # Build instructions
+    local instructions
+    instructions="# On other devices, run:
+${nix_run_cmd} -- <config-git-url> '${age_key}'
+
+# To pair mobile:
+${nix_run_cmd} -- mobile"
+
     # Summary
     echo ""
     echo -e "${G}=== Setup Complete ===${NC}"
     echo ""
     echo "Your age key (SAVE THIS SOMEWHERE SAFE):"
-    echo -e "${BOLD}$(cat "$AGE_KEY_FILE" | grep 'AGE-SECRET-KEY')${NC}"
+    echo -e "${BOLD}${age_key}${NC}"
     echo ""
     if [[ -n "$device_id" ]]; then
         echo "Device ID: ${device_id:0:20}..."
@@ -127,10 +151,25 @@ EOF
     echo "     cd $config_dir && git remote add origin <your-git-url> && git push -u origin main"
     echo ""
     echo "  2. On other devices, run:"
-    echo "     nix run 'git+<your-grapho-repo>' -- <config-git-url> <age-key>"
+    echo "     ${nix_run_cmd} -- <config-git-url> <age-key>"
     echo ""
     echo "  3. To pair mobile:"
-    echo "     nix run 'git+<your-grapho-repo>' -- mobile"
+    echo "     ${nix_run_cmd} -- mobile"
+
+    # Copy to clipboard if possible
+    if has xclip; then
+        echo "$instructions" | xclip -selection clipboard
+        echo ""
+        ok "Instructions copied to clipboard!"
+    elif has wl-copy; then
+        echo "$instructions" | wl-copy
+        echo ""
+        ok "Instructions copied to clipboard!"
+    elif has pbcopy; then
+        echo "$instructions" | pbcopy
+        echo ""
+        ok "Instructions copied to clipboard!"
+    fi
 }
 
 # =============================================================================
@@ -144,6 +183,18 @@ setup_join() {
     echo -e "${BOLD}Joining existing setup...${NC}"
     echo ""
 
+    # Ask for grapho repo URL and branch
+    echo -n "Your grapho flake repo URL (e.g., https://github.com/you/grapho): "
+    read -r grapho_url
+    [[ -z "$grapho_url" ]] && { err "Repo URL is required"; exit 1; }
+
+    echo -n "Branch [master]: "
+    read -r grapho_branch
+    grapho_branch="${grapho_branch:-master}"
+
+    local nix_run_cmd="nix run 'git+${grapho_url}?ref=${grapho_branch}'"
+
+    echo ""
     mkdir -p "$USYNC_DIR"
 
     # Handle @file syntax
@@ -184,6 +235,14 @@ setup_join() {
     local devices_file="$USYNC_DIR/devices.json"
     echo "{\"devices\":{\"$(hostname)\":{\"id\":\"$device_id\",\"added\":\"$(date -Iseconds)\"}}}" > "$devices_file"
 
+    # Build instructions
+    local instructions
+    instructions="# Add this device on your other machines:
+${nix_run_cmd} -- add $device_id $(hostname)
+
+# To pair mobile:
+${nix_run_cmd} -- mobile"
+
     echo ""
     echo -e "${G}=== Joined! ===${NC}"
     echo ""
@@ -191,11 +250,26 @@ setup_join() {
         echo "This device: ${device_id:0:20}..."
         echo ""
         echo "Add this device on your other machines:"
-        echo -e "  ${BOLD}nix run 'git+<your-grapho-repo>' -- add $device_id $(hostname)${NC}"
+        echo -e "  ${BOLD}${nix_run_cmd} -- add $device_id $(hostname)${NC}"
     fi
     echo ""
-    echo "To pair mobile: nix run 'git+<your-grapho-repo>' -- mobile"
+    echo "To pair mobile: ${nix_run_cmd} -- mobile"
     echo "To sync:        ./scripts/usync"
+
+    # Copy to clipboard if possible
+    if has xclip; then
+        echo "$instructions" | xclip -selection clipboard
+        echo ""
+        ok "Instructions copied to clipboard!"
+    elif has wl-copy; then
+        echo "$instructions" | wl-copy
+        echo ""
+        ok "Instructions copied to clipboard!"
+    elif has pbcopy; then
+        echo "$instructions" | pbcopy
+        echo ""
+        ok "Instructions copied to clipboard!"
+    fi
 }
 
 # =============================================================================