Adds findFilePathLinks, a pure matcher that finds file paths (with
optional :line, :line:col, :start-end and #L42/#L40-L50 suffixes) in
a line of terminal text, skipping anything inside a URL and stripping
markdown/quote wrapping from the matched span.
Per pre-flight ruling P7, a slash-having token still requires the
basename to carry a real extension (any extension) or be a known
extensionless basename -- a bare and/or or src/components is no
longer treated as a path.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>