docs/concepts/context.md: replaced 12 curly quote and italic-marker
typography characters with ASCII equivalents so grep, copy-paste, and
Mintlify search hit clean tokens. Converted the 4-bullet Related list
into a CardGroup linking context-engine, compaction, system-prompt,
and agent-loop. Verified all four targets exist.
docs/concepts/soul.md: replaced 7 typography characters (curly
apostrophe in 'agent's' and similar) with ASCII equivalents. Renamed
'## Related docs' to '## Related' for consistency with sibling pages
and converted the 3-bullet list into a CardGroup linking
agent-workspace, system-prompt, and the SOUL.md template.
docs/tools/perplexity-search.md: removed the duplicate
'# Perplexity Search API' H1 (Mintlify renders title from frontmatter).
Replaced 2 typography characters and converted the 4-bullet Related
list into a CardGroup; verified web/brave-search/exa-search targets.
docs/tools/apply-patch.md: converted the 3-bullet Related list into a
CardGroup linking diffs, exec, and code-execution.
