v0.17.0

Added — smart paste: lex/preparePaste re-anchors pasted text to the caret's structural level (#708)

The language server now implements a custom lex/preparePaste request. On paste, lex-lsp classifies the clipboard (verbatim / table / single-line / re-anchor) and, for the re-anchor case, shifts the pasted block's indentation to match the structural container enclosing the caret — so copy-paste between and into Lex documents lands at the right structural level instead of the source's original indentation. Advertised via a capability flag so editors enable interception only against a server that implements it. Editor glue that calls the request ships separately, one PR per editor.