Add tests for the quick-open overlay's keymap-intent handlers (nav,
accept, dismiss), the no-match / truncated / walk-failure hints, the
search panel's error + no-results states and toggle re-run, the
controller's failed-grep and exclude paths, and engine glob/regex-group
cases. Restores the coverage floor (95.20%).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The pure-Dart content-search engine behind find-in-files (D-79): walks
the ignore-pruned workspace, fans files across worker isolates
(Isolate.run) for parallelism, matches each line with a literal
indexOf fast-path or a RegExp, and streams match batches with
cooperative cancellation. No ripgrep dependency; the search.grep IPC
contract is engine-agnostic so an rg accelerator can slot in later.
search.grep returns a searchId and streams search.match / search.done
(or search.error) events, mirroring files.watch; search.cancel stops
an in-flight search. The service reuses the files service's resolved
ignore set so both honour the same ignore_files: layering.
editor.open gains an optional 1-based line argument: it converts the
line to a byte offset and sets the initial selection, enabling
click-to-line from search results.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>