v3 release with persistent auth, session tagging, hierarchical file explorer, and smart ZIP packaging

[iAyon]

🚀 AutoClimDS v3 Major Update

🔑 Authentication & Session State Persistence

• Query Parameter Auth Recovery: Integrated st.query_params session auto-recovery (user & admin) to maintain active login states across browser refreshes and file downloads without unexpected logouts.
• Password Authentication: Added secure password hashing (scrypt) and user sign-in / sign-up flows for Columbia University emails (@columbia.edu).

🏷️ Custom Session Tagging & Tag-First Navigation

• Session Naming: Added custom session tagging (🏷️ Session Tag / Name) allowing users to label research sessions while maintaining underlying UUID mappings.
• Tag-First Dropdown Formatting: Updated Admin File Explorer, Admin User Inspector, and User Sidebar options to display 🏷️ Tag | Date (SessionID...) for fast visual lookup.

🗄️ Hierarchical Admin File Explorer & User Inspector

• 4-Stage Hierarchical Filter: Filter system files by User Email ➔ Date Range ➔ Session ➔ Directory.
• God Mode Replay: Replay past user conversations and inspect token usage and custom session tags.
• Selective ZIP Packaging: Allows packaging specific chosen files or generating a full session ZIP (transcript, metadata, Jupyter notebook .ipynb, and datasets).

📦 Smart 3-Tier File & Dataset Detection

• Multi-Level File Association: Bundles files matching the session UUID, filenames referenced in conversation transcripts (e.g., texas_flood_disasters_2021.csv, .nc, .png), and files generated during the active session timeframe.
• Auto-Tagging: Automatically prefixes session-generated data files with <session_id>_.

🧹 Clean File Maintenance & Session Controls

• Empty Session Protection: Prevents writing 0-conversation snapshot files to disk when no user queries are submitted.
• Automated Purging: Automatically cleans up orphaned empty session JSON files.
• Fresh Session Reset: Added ➕ Start New Fresh Session controls in the top banner and sidebar for one-click clean slate research runs.