Added

• You can force the format with; format json|jsonl or the new "Open jsonl file" menu.
• When you pick a file without a known format, a dialog asks whether it is JSON or JSONL, and whether to open it read-only.
• Saving a JSONL file writes one row per line.
• Read-only mode: open with --read-only, the "Open read only" menu or the format dialog. It uses much less memory because it keeps the original text and stores each cell as a 16-byte offset into it. Editing, paste, replace and save are turned off. Copy, filter, sort, search and opening sub tables still work.
• --max-depth CLI flag to limit how deep the file is parsed.
• New value popup for cells whose text doesn't fit:
  • It opens only when the text is actually cut off, not just when it's over 100 characters.
  • It stays open while the pointer is over the cell or the popup, so you can scroll it and select text.
  • Nested objects and arrays are shown indented, and only the visible lines are drawn, so large values stay fast.

Changed

• Large files are now always parsed at full depth. Before, files over 100MB were only parsed to depth 1.
• The rows of the root array are parsed in parallel, for both JSON and JSONL.
• Lower memory use for nested objects: only depth-1 objects keep their original text. The text of deeper objects is rebuilt when needed and cached.
• Pinned columns: they now start at a width that fits their content and can be resized. Before, they used a fill-remaining-space column that couldn't be resized. Pinning or unpinning a column now happens after the current frame is drawn, which avoids glitches.

Fixed

• Unpinning the last pinned column, or pinning the last unpinned one, no longer leaves the table in a broken state.
• Pinning or unpinning a column now clears the focused cell and any edit in progress. Before, they could end up pointing at the wrong column.

• Rework filters

Fix jsonl support: fix depth change and support for very long line

Performance improvement

On ultra dense table (see #52) rendered from 42fps to 54fps

• Remove useless interaction zone
• Use our own text component to simply paint cells text instead of using Label, this allow use to control LayoutJob and use the break_on_newline=false option to disable LF to be rendered without performing a replace on cells string
• Context menu was created on each cells, even if not opened it required some work internally in egui (per frame cache update)