Fix: Remove quotes from YAML tags for Obsidian compatibility

- Tags now generate as [tag1, tag2] instead of ["tag1", "tag2"]
- Fixes Obsidian tag linking and recognition
- Better knowledge base integration

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: gitcoder89431

crates/agentic-tui/src/ui/app.rs

@@ -1361,7 +1361,7 @@ impl App {
                 chrono::Utc::now().format("%Y-%m-%d %H:%M:%S UTC"),
                 self.original_user_query.replace("\"", "\\\""),
                 clean_proposal.replace("\"", "\\\""),
-                note.header_tags.iter().map(|tag| format!("\"{}\"", tag)).collect::<Vec<_>>().join(", "),
+                note.header_tags.join(", "),
                 local_model,
                 local_prompt_tokens,
                 local_completion_tokens,