- Extended line selector parsing in path-utils to accept `..` as a forgiving alias for `-`, with `..` normalized during chunk parsing.
- Updated selector-matching regexes for file selectors and internal URL selectors to recognize alias-style ranges in single chunks and comma-separated lists.
- Added tests covering `N..M`, `N..`, mixed separators, inverted-range errors, and path-splitting behavior with `:N..M` selectors and `foo:../bar.ts` paths.
- Replaced per-line hash anchors with file-level hash validation in hashline format, changing anchor syntax from LINE+HASH to bare LINE numbers.
- Simplified hashline line separator from pipe (|) to colon (:) and replaced replace operator (->) with colon, added delete operator (!) for explicit line deletion.
- Implemented file-read snapshot caching with multi-snapshot ring buffer per path and file-hash-based recovery to detect and recover from stale edits.
- Refactored hashline grammar, parser, and execution to support file-level hash binding, anchor-scoped validation, and structural bracket warnings for delete operations.
- Updated documentation and test fixtures to reflect new hashline syntax with file hashes, colon separators, and delete operator throughout.
- Extended selector regex and parser to accept ranges like `:5-16,960-973`.
- Ranges are sorted and merged automatically before reading.
- Out-of-bounds ranges surface as inline notices instead of errors.
- Added `#readLocalFileMultiRange` and `#buildInMemoryMultiRangeResult` for file, archive, notebook, and internal URL targets.
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