Reveal complete summaries when proposal cards expand

[Cyber-preacher]

Why

Proposal cards should remain compact in the list while still making the complete summary available. The previous preview helper removed text before rendering, and the one-line CSS crop did not reliably display an ellipsis.

What changed

• Preserve the complete normalized summary in shared record cards
• Keep the original collapsed card dimensions
• Show a CSS ellipsis whenever the collapsed summary exceeds its available width
• Let expanded summaries wrap across the full card width
• Add regression coverage for retained content and collapsed/expanded presentation

Validation

• yarn test: 54 files, 241 tests passed
• yarn typecheck
• yarn prettier:check
• yarn build
• Browser-verified five summary lengths, including an extreme case
• Collapsed cards measured at the original compact height and displayed ellipsis
• Expanded stress summary had no overflow and retained its final sentence

Data safety

Web-only presentation change. No API, schema, migration, runtime fixture, or user-data changes. Temporary preview fixtures were kept outside the repository and removed before commit.