Strip whitespace from publication abstracts to prevent code block rendering

[Copilot]

Publication abstracts with leading whitespace are rendered as single-line code blocks in markdown, requiring horizontal scrolling.

Changes

Model: Added before_save callback to strip leading/trailing whitespace from abstract field

# app/models/publication.rb
before_save :strip_abstract_whitespace

private

def strip_abstract_whitespace
  self.abstract = abstract&.strip
end

Tests: Added coverage for whitespace stripping across all import paths (PubMed, DOI, BibTeX, manual entry)

Result

Abstracts now render as normal text with proper line wrapping instead of horizontal-scrolling code blocks.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>publication abstract are rendered as a single line</issue_title>
<issue_description>Describe the bug
The abstracts of publications are squished into a single line that requires horizonal scrolling.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://workflowhub.eu/publications/64
2. Try to read the entire abstract without scrolling

Expected behavior
The abstract is presented without the need for scrolling.

Screenshots

Smartphone (please complete the following information):

• Device: FairPhone 5
• OS: Android
• Browser: standard Chrome, latest Firefox

Additional context
Add any other context about the problem here.
</issue_description>

<agent_instructions>Ensure the Publication model's abstract field is pre-processed to strip it of preceeding/trailing whitespace.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@fbacall Looks like the whitespace at the start turns it into a code block.

We should either:

1. Strip whitespace from the start/end of abstracts
2. Not render abstracts as markdown</comment_new>

• Fixes publication abstract are rendered as a single line #2404

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