feat: add download-attachment and pull-request commands

- Add /download-attachment command for downloading files from URLs
- Add /pull-request command for creating PRs in one step
- Expose transcript:extract script in package.json

🤖 Generated with Claude Code

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

package.json

@@ -15,6 +15,7 @@
     "attachments:orphans": "for file in 05_Attachments/*; do basename \"$file\" | xargs -I {} sh -c 'grep -r \"{}\" . --include=\"*.md\" > /dev/null || echo \"{}\"'; done",
     "attachments:recent": "find 05_Attachments -type f -mtime -7 -exec ls -la {} \\;",
     "attachments:create-organized": "mkdir -p 05_Attachments/Organized",
+    "transcript:extract": ".scripts/transcript-extract.sh",
     "vault:stats": ".scripts/vault-stats.sh",
     "check-updates": "REMOTE=$(curl -s https://raw.githubusercontent.com/heyitsnoah/claudesidian/main/package.json | grep version | head -1 | sed 's/.*: \"\\(.*\\)\".*/\\1/') && LOCAL=$(grep version package.json | head -1 | sed 's/.*: \"\\(.*\\)\".*/\\1/') && if [ \"$LOCAL\" != \"$REMOTE\" ]; then echo -e \"📦 Update available! Latest: $REMOTE (you have: $LOCAL)\\n\\n⬇\\n/upgrade\\n⬆\\n\\n## What will this do\\n\\n✅ Update to the latest version of Claudesidian\\n✅ Get new features and improvements\\n✅ Preserve your vault content and settings\\n\\n\"; fi"
   },