centralize guides and rails under mosaic with runtime compatibility links

rails/git/pr-view.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+# pr-view.sh - View pull request details on GitHub or Gitea
+# Usage: pr-view.sh -n <pr_number>
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/detect-platform.sh"
+
+# Parse arguments
+PR_NUMBER=""
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -n|--number)
+            PR_NUMBER="$2"
+            shift 2
+            ;;
+        -h|--help)
+            echo "Usage: pr-view.sh -n <pr_number>"
+            echo ""
+            echo "Options:"
+            echo "  -n, --number   PR number (required)"
+            echo "  -h, --help     Show this help"
+            exit 0
+            ;;
+        *)
+            echo "Unknown option: $1"
+            exit 1
+            ;;
+    esac
+done
+
+if [[ -z "$PR_NUMBER" ]]; then
+    echo "Error: PR number is required (-n)"
+    exit 1
+fi
+
+detect_platform
+
+if [[ "$PLATFORM" == "github" ]]; then
+    gh pr view "$PR_NUMBER"
+elif [[ "$PLATFORM" == "gitea" ]]; then
+    tea pr "$PR_NUMBER"
+else
+    echo "Error: Unknown platform"
+    exit 1
+fi