# Developer Memory Log

This document records the exact state of the project, completed features, solved bugs, and historical changes to maintain continuity.

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## 1. Core Completed Features

### A. Onboarding Legal Skip & MFA Control
* **Onboarding Skip**: Implemented "None (No agreement required)" legal options. When a partner is invited or updated with no NDA/MSA requirement, the backend `AuthService` automatically bypasses signing steps and sets the user's status to `APPROVED`.
* **MFA Toggle**: Added `mfaEnabled` options inside the partner invitation modal, partner editing forms, and backend API routes.

### B. Client-Side Document Previews
* **Word Document Preview**: Integrated `docx-preview` to parse raw OpenXML array buffers and render them in-browser.
* **Spreadsheet & CSV Preview**: Integrated SheetJS (`xlsx`) to parse spreadsheet buffers and generate clean HTML cell tables.
* **Online Preview Button**: Enabled online preview buttons (Eye icon) for CSV files and text/code files by expanding the `isRenderable` utility in `AssetCard.tsx`.

### C. Responsive Full-Bleed Thumbnails
* **Word & Spreadsheet Card Thumbnails**: Replaced static placeholders with dynamic rendered previews of the first page/sheet.
* **Responsive Scaling**: Integrated a React `ResizeObserver` hook inside `DocxThumbnail.tsx` and `SpreadsheetThumbnail.tsx` to automatically calculate scaling factor based on card width, making cards fit their containers perfectly instead of sticking to the top-left corner.

### D. Clean Admin Deletion
* **S3 Deletion Hook**: Updated backend `AssetService.deleteAsset` to detect files under `/uploads/` and dispatch a `DeleteObjectCommand` to the MinIO container bucket, cleaning up disk space on deletion.

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## 2. Key Resolved Bugs

### A. CSV Text Preview Bypass
* **Symptom**: CSV files were being treated as plain text files, rendering as comma-separated text blocks in a code viewport.
* **Resolution**: Excluded `.csv` files and mime-types from the `isTextOrCodeAsset` filter inside `AssetViewerModal.tsx`. This routed them correctly to the SheetJS spreadsheet parser.

### B. Dark Mode Cell Invisible Text
* **Symptom**: In dark mode, spreadsheet/CSV cells rendered as blank grids because text inherited the light mode/system white text color.
* **Resolution**: Added explicit `.excel-thumbnail-container table { color: #0f172a }` and `.excel-preview-container table { color: #0f172a }` CSS rules to override dark mode layout text colors and keep tables fully readable.