Reklamator/specs/003-render-ai-analyis/spec.md

# Feature Specification: Render AI Analysis as Formatted HTML

**Feature Branch**: `003-render-ai-analyis`
**Created**: 2025-10-17
**Status**: Draft
**Input**: User description: "Render ai analyis as html. When I view a feedback detail, the ai analysis is shown as plain text markdown without any formating. This is not very usefull and the analysis markdown shoud be rendered as html and integrated in the feedback detail as formated html."

## User Scenarios & Testing *(mandatory)*

### User Story 1 - View Formatted AI Analysis (Priority: P1)

Product owners viewing feedback details see AI analysis rendered as formatted HTML with proper headings, lists, emphasis, and structure instead of plain markdown text. This makes the analysis easier to read and understand, improving the ability to quickly extract insights from customer feedback.

**Why this priority**: This is the core value of the feature. The AI analysis is only useful if it's readable and well-formatted. Currently, users see raw markdown which defeats the purpose of having AI-generated insights.

**Independent Test**: Can be fully tested by navigating to any feedback detail page that has AI analysis and verifying that markdown elements (headings, bold, lists, etc.) are properly rendered as HTML formatting.

**Acceptance Scenarios**:

1. **Given** a feedback item has AI analysis with markdown headings (e.g., `## Summary`, `### Key Points`), **When** the product owner views the feedback detail page, **Then** the headings are displayed as properly sized and styled HTML headings
2. **Given** a feedback item has AI analysis with bullet lists or numbered lists, **When** the product owner views the feedback detail page, **Then** the lists are rendered as proper HTML lists with indentation and bullets/numbers
3. **Given** a feedback item has AI analysis with bold text (`**important**`) or italic text (`*emphasis*`), **When** the product owner views the feedback detail page, **Then** the text appears with proper bold/italic formatting
4. **Given** a feedback item has AI analysis with code blocks or inline code, **When** the product owner views the feedback detail page, **Then** the code is displayed in a monospace font with appropriate background styling
5. **Given** a feedback item has AI analysis with markdown links (e.g., `[text](url)`), **When** the product owner views the feedback detail page, **Then** the links are rendered as clickable HTML anchor tags that open in a new tab with security attributes (rel="noopener noreferrer nofollow")
6. **Given** a feedback item has AI analysis with markdown tables, **When** the product owner views the feedback detail page, **Then** the tables are rendered as properly formatted HTML tables with rows and columns
7. **Given** a feedback item has AI analysis containing images or embedded content, **When** the product owner views the feedback detail page, **Then** these elements are excluded from the rendered output
8. **Given** a feedback item has AI analysis containing potentially dangerous HTML (scripts, iframes, event handlers), **When** the product owner views the feedback detail page, **Then** only whitelisted safe formatting tags are rendered and all dangerous content is removed
9. **Given** a feedback item has no AI analysis yet, **When** the product owner views the feedback detail page, **Then** the AI analysis section is not displayed (existing behavior preserved)

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## Clarifications

### Session 2025-10-17

- Q: When markdown-to-HTML conversion fails (e.g., library error, unexpected exception), how should the system behave? → A: Fall back to displaying the raw markdown text surrounded with a preformatted HTML tag to preserve line breaks
- Q: What level of sanitization should be applied to the converted HTML? → A: Whitelist-based: allow only safe formatting tags (headings, lists, bold, italic, code, paragraphs, links)
- Q: Should the system support additional markdown features beyond basic formatting? → A: Include links and tables, but exclude images and embedded content
- Q: How should external links behave for security and user experience? → A: External links open in new tab with rel="noopener noreferrer nofollow" for security
- Q: Should conversion issues be logged for monitoring and debugging? → A: Log warnings for conversion issues with feedback ID for debugging

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### Edge Cases

- When the AI analysis contains malformed markdown (e.g., unclosed tags, invalid syntax), the system renders it as best-effort HTML and logs a warning with the feedback ID
- When markdown-to-HTML conversion completely fails (e.g., library exception), the system falls back to displaying the raw markdown in a preformatted block and logs a warning with the feedback ID
- When the AI analysis contains HTML-like characters (e.g., `<`, `>`, `&`), they are escaped before markdown processing
- When the AI analysis is empty or contains only whitespace, the AI Analysis section is not displayed
- When the AI analysis is extremely long with many nested lists or headings, the system still renders within the 2-second page load budget
- When the AI analysis contains potentially unsafe content (e.g., JavaScript, embedded scripts), it is removed by HTML sanitization and a warning is logged with the feedback ID

## Requirements *(mandatory)*

### Functional Requirements

- **FR-001**: System MUST convert markdown-formatted AI analysis to HTML before displaying it on feedback detail pages
- **FR-002**: System MUST support standard markdown elements including headings (h1-h6), bold, italic, lists (ordered and unordered), code blocks, inline code, links, and tables; images and embedded content are explicitly excluded
- **FR-003**: System MUST sanitize the converted HTML using a whitelist approach, allowing only safe formatting tags (headings, lists, bold, italic, code, paragraphs, links, tables) and removing all potentially dangerous content (scripts, iframes, event handlers, images, embedded content, etc.)
- **FR-004**: System MUST configure all links to open in a new tab with `target="_blank"` and include security attributes `rel="noopener noreferrer nofollow"` to prevent window access and search engine link transfer
- **FR-005**: System MUST preserve the existing behavior when no AI analysis is present (do not display the analysis section)
- **FR-006**: System MUST handle malformed markdown gracefully without causing page rendering errors; when conversion completely fails, fall back to displaying raw markdown in a preformatted HTML block
- **FR-007**: System MUST apply appropriate styling to the rendered HTML to ensure readability and visual consistency with the rest of the interface
- **FR-008**: System MUST escape HTML-like characters in the original markdown to prevent unintended HTML injection
- **FR-009**: System MUST log warnings when markdown conversion encounters issues (malformed syntax, sanitization removes content, conversion failures), including the feedback ID for debugging purposes

### Key Entities

- **AI Analysis**: Text content containing markdown-formatted analysis generated by Claude AI. Stored as plain text with markdown syntax, needs to be converted to HTML for display.

## Success Criteria *(mandatory)*

### Measurable Outcomes

- **SC-001**: Product owners can read and understand AI analysis 50% faster due to improved formatting and visual hierarchy
- **SC-002**: 100% of supported markdown elements (headings, lists, bold, italic, code, links, tables) are properly rendered as HTML
- **SC-003**: Zero XSS vulnerabilities introduced by the HTML rendering functionality
- **SC-004**: Users can distinguish between different sections of AI analysis (summary, sentiment, key points) at a glance due to proper heading hierarchy
- **SC-005**: Page load time for feedback detail remains under 2 seconds even with complex AI analysis content