v0.10.0

• Browse a SQLite database as directories: Enter a .db/.sqlite file to list its tables, enter a table to stream its rows, and each row reads as JSON with F3 and copies out as <database>.<table>.<id>.json with F5. Read-only.
• A table's own first columns become the panel's columns, so Ctrl+2 sorts by the second column of the database and Ctrl+3 by the third, like any other column.
• The SQLite backend is a default-on sqlite build feature; cargo build --no-default-features produces a pure-Rust binary without it, and everything else is unaffected.
• A listing can now define its own columns rather than only choosing among the panel's built-in ones, with per-row values that sort as numbers or text.
• A backend can suggest the format the viewer reads a row as, so a database row named 10000 still opens as highlighted JSON.