add scripts/show_drafts and scripts/scheduled for listing unpublished blog posts

scripts/show_drafts

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+# Show all blog post files that are drafts (published: false in frontmatter).
+# Usage: make show-drafts  (from repo root)
+
+set -euo pipefail
+
+# Resolve repo root: script/ is one level below the repo root
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+BLOG_DIR="$REPO_ROOT/app/priv/blog"
+
+if [ ! -d "$BLOG_DIR" ]; then
+  echo "Error: blog directory not found at $BLOG_DIR" >&2
+  exit 1
+fi
+
+# Find .md files with frontmatter containing published: false
+# Uses a multi-line grep approach: find files where the frontmatter block
+# (between first --- markers) contains published: false
+found=0
+while IFS= read -r -d '' file; do
+  # Extract frontmatter (between first line and first ---)
+  frontmatter=$(sed -n '1,/^---$/p' "$file" | sed '$d')
+  if echo "$frontmatter" | grep -q 'published: *false'; then
+    echo "$file"
+    found=$((found + 1))
+  fi
+done < <(find "$BLOG_DIR" -name '*.md' -type f -print0 | sort -z)
+
+if [ "$found" -eq 0 ]; then
+  echo "(no drafts found)"
+fi