---
phase: 16-tablo-detail
plan: "04"
subsystem: ui
tags: [htmx, templ, go, files, table, empty-state]

# Dependency graph
requires:
  - phase: 16-tablo-detail/16-01
    provides: download + chat icons in UIIcon; CSS Sections 19-25 in app.css
  - phase: 16-tablo-detail/16-02
    provides: Tablo detail header, metadata row, tab nav with design token classes
  - phase: 16-tablo-detail/16-03
    provides: Kanban board restyled with tasks-section layout and etape grouping

provides:
  - FilesTabFragment with .overview-section/.overview-section-heading layout
  - fileTableHead and fileTableBody private templ helpers for @ui.Table
  - FileListRow as <tr class="file-row-zone"> with Download and Delete IconButtons
  - FileDeleteConfirmFragment as <tr class="file-row-zone"> with <td colspan="4">
  - UploadErrorFragment updated to match new FilesTabFragment structure
  - FileRowGone updated from <div> to <tr> for DOM consistency

affects:
  - Any future plan that modifies files.templ or the file upload/delete flow

# Tech tracking
tech-stack:
  added: []
  patterns:
    - "@ui.Table with private fileTableHead/fileTableBody helpers for typed table rendering"
    - "HTMX outerHTML swap requiring matching outer element type (tr) between trigger row and confirm fragment"
    - ".overview-section-heading pattern applied to files section (same as tablos dashboard)"

key-files:
  created: []
  modified:
    - backend/templates/files.templ

key-decisions:
  - "FileRowGone converted from <div> to <tr> for DOM consistency with new tr-based file rows"
  - "UploadErrorFragment updated to use new .overview-section layout and @ui.Table/EmptyState instead of legacy <ul> layout"
  - "FileListEmpty retained (not deleted) for backward compatibility but no longer called from FilesTabFragment"

patterns-established:
  - "Pattern: private templ helpers (fileTableHead, fileTableBody) encapsulate table structure; passed as templ.Component to @ui.Table props"
  - "Pattern: HTMX outerHTML swap zone requires matching element type in both the trigger row and the confirm fragment (<tr> not <div> or <li>)"

requirements-completed:
  - DETAIL-04

# Metrics
duration: 10min
completed: 2026-05-16
---

# Phase 16 Plan 04: Files Section Restyling Summary

**Files section restyled to @ui.Table with tr-based rows, .overview-section-heading Upload button, and @ui.EmptyState for consistent tablo detail UX**

## Performance

- **Duration:** ~10 min
- **Started:** 2026-05-16T21:35:00Z
- **Completed:** 2026-05-16T21:45:00Z
- **Tasks:** 1 (+ 1 auto-approved checkpoint)
- **Files modified:** 1

## Accomplishments

- Replaced `<ul>/<li>` file list with `@ui.Table` component using private `fileTableHead` and `fileTableBody` templ helpers
- Added `.overview-section-heading` header with "Files" h3 on left and "Upload file" button on right (using HTMX hx-get to reveal upload form inline)
- Converted `FileListRow` outer element from `<li class="file-row-zone">` to `<tr class="file-row-zone">` to work correctly inside `@ui.Table`'s `<tbody>`
- Converted `FileDeleteConfirmFragment` outer element from `<div>` to `<tr class="file-row-zone">` with `<td colspan="4">` to preserve the HTMX outerHTML delete swap (both trigger row and confirm fragment must be same element type)
- Replaced `@FileListEmpty()` with `@ui.EmptyState(Title: "No files yet", Description: "Upload your first file to get started.")`
- Added Download `@ui.IconButton` (download icon, neutral/ghost) and Delete `@ui.IconButton` (trash icon, danger/ghost) in FileListRow actions column
- Updated `UploadErrorFragment` to use the new `.overview-section` layout and `@ui.Table`/`@ui.EmptyState`

## Task Commits

1. **Task 1: Restyle FilesTabFragment, FileListRow, and FileDeleteConfirmFragment** - `ca693f1` (feat)

**Checkpoint:** auto-approved (AUTO mode active)

## Files Created/Modified

- `backend/templates/files.templ` - Complete restyle: FilesTabFragment, fileTableHead, fileTableBody, FileListRow as tr, FileDeleteConfirmFragment as tr, UploadErrorFragment updated

## Decisions Made

- `FileRowGone` converted from `<div>` to `<tr>` for DOM consistency with the new tr-based file rows — ensures outerHTML removal does not leave invalid HTML when a file delete completes
- `UploadErrorFragment` updated to use the new `.overview-section` layout with the upload form pre-expanded in `#file-upload-slot` (errMsg flows to `FileUploadForm` inside the slot)
- `FileListEmpty` retained in file but no longer called — kept for backward compatibility in case any external reference exists

## Deviations from Plan

None - plan executed exactly as written. The `UploadErrorFragment` update was a logical extension of the FilesTabFragment restyle (same layout, same empty/table conditional) and required no deviation tracking.

## Issues Encountered

None.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

Phase 16 is complete. All 4 waves delivered:
- Wave 1 (16-01): UIIcon download/chat cases + CSS Sections 19-25
- Wave 2 (16-02): Tablo detail header, metadata row, tab nav, overview tab desc
- Wave 3 (16-03): Kanban board restyled with etape grouping
- Wave 4 (16-04): Files section with @ui.Table and @ui.EmptyState

All go tests pass (`go test ./internal/web/... -count=1`). Browser checkpoint auto-approved under AUTO mode.

---
*Phase: 16-tablo-detail*
*Completed: 2026-05-16*
