---
phase: 08-error-display
plan: 01
subsystem: ui
tags: [toast, error-handling, overlay, notifications]

# Dependency graph
requires:
  - phase: 07-video-connections
    provides: Video node with connection validation
provides:
  - Persistent toast notifications with expandable details
  - Error overlay on generate nodes showing failure state
  - Top-right positioned toast (moved from bottom-center)
affects: [error-handling, user-feedback, debugging]

# Tech tracking
tech-stack:
  added: []
  patterns:
    - "Persistent toast with manual dismiss for errors"
    - "Expandable details in toast notifications"
    - "Semi-transparent overlay for error states"

key-files:
  created: []
  modified:
    - src/components/Toast.tsx
    - src/components/nodes/GenerateImageNode.tsx
    - src/components/nodes/GenerateVideoNode.tsx

key-decisions:
  - "Toast position moved to top-right for better visibility"
  - "Error overlay at 40% opacity to show previous output"
  - "White text on red overlay for contrast"

patterns-established:
  - "Error states trigger persistent toast with full error in details"
  - "Overlay pattern for error indication on nodes"

issues-created: [ISS-002]

# Metrics
duration: 14 min
completed: 2026-01-12
---

# Phase 8 Plan 01: Error Display Summary

**Persistent top-right toast notifications with expandable error details, plus semi-transparent red overlays on failed generate nodes**

## Performance

- **Duration:** 14 min
- **Started:** 2026-01-11T23:40:10Z
- **Completed:** 2026-01-11T23:54:13Z
- **Tasks:** 4
- **Files modified:** 3

## Accomplishments

- Toast component enhanced: moved to top-right, added persistent mode, added expandable details
- Error overlay added to GenerateImageNode showing failure state over previous output
- Error overlay added to GenerateVideoNode with same pattern
- Users can now see errors even when previous generation output exists

## Task Commits

Each task was committed atomically:

1. **Task 1: Update Toast component** - `6625449` (feat)
2. **Task 2: GenerateImageNode error overlay** - `77fdea5` (feat)
3. **Task 3: GenerateVideoNode error overlay** - `7356fd0` (feat)
4. **UAT fix: Reduce overlay opacity** - `ee6214d` (fix)
5. **UAT fix: White text for contrast** - `dbc0727` (fix)

## Files Created/Modified

- `src/components/Toast.tsx` - Added persistent mode, details expansion, top-right positioning
- `src/components/nodes/GenerateImageNode.tsx` - Added error overlay, toast trigger on error
- `src/components/nodes/GenerateVideoNode.tsx` - Added error overlay, toast trigger on error

## Decisions Made

- Moved toast from bottom-center to top-right for better visibility
- Error overlay uses 40% opacity (reduced from 70% during UAT)
- White text on red overlay for better contrast (changed during UAT)
- Toast requires manual dismiss for errors (persistent mode)

## Deviations from Plan

### UAT Adjustments

**1. Reduced overlay opacity**
- **Found during:** UAT verification
- **Issue:** 70% opacity too dark, obscured previous output
- **Fix:** Reduced to 40% opacity
- **Committed in:** ee6214d

**2. Changed text color for contrast**
- **Found during:** UAT verification
- **Issue:** Red text on red overlay hard to read
- **Fix:** Changed to white text
- **Committed in:** dbc0727

---

**Total deviations:** 2 UAT fixes (visual adjustments)
**Impact on plan:** Minor visual refinements based on user feedback

## Issues Encountered

None - all tasks completed as planned with minor visual adjustments during UAT.

## Issues Logged

- **ISS-002:** Multi-image inputs not mapped correctly for fal.ai models (discovered during UAT, unrelated to this phase)

## Next Phase Readiness

- Error display complete, ready for Phase 9 (Video History)
- No blockers

---
*Phase: 08-error-display*
*Completed: 2026-01-12*