v0.7.0 — text selection and clipboard copy

[borghei]

0.7.0 — text selection and clipboard copy

ink captures the mouse for wheel-scroll, which meant giving up the terminal's own text selection. It now does the job itself — and does it better, because it knows where a code block starts and where ink's own decoration ends.

Added

• v / V — character-wise / line-wise selection. hjkl/arrows, w/b, 0/$, g/G, Ctrl+d/Ctrl+u move the cursor end and the view follows it; y copies, Esc cancels.
• Mouse drag selects and copies on release; double-click takes the word, triple-click the line.
• c labels every code block on screen and copies the one you pick — raw source, no borders, no syntax escapes, no margin.
• Y copies the current section's markdown source, down to the next heading of the same or higher level. Inside link-hint mode (f), Y flips the labels from "open this link" to "copy this URL".
• Copies go out over OSC 52 (crosses SSH, wrapped for tmux) and through a native helper (pbcopy, wl-copy, xclip, xsel, clip.exe) when one is on PATH. No new dependencies. [behavior] clipboard = "auto" | "osc52" | "native" | "off" narrows or disables it.
• New rebindable actions select_mode, select_line_mode, copy_code, copy_section. Visual-mode motions are a fixed table, as with search and slides.
• Themes gained selection_bg / selection_fg, both optional — a theme file written before this release still loads and derives a legible selection from its existing colors.

Fixed

• Heading text is stripped of terminal control bytes where it is recorded, not only where it is drawn as a line. A heading carrying an ESC byte reached the TOC sidebar unfiltered before. Fence info strings get the same treatment.

Notes on the implementation

• Selection lives in document coordinates measured in terminal cells, snapping to grapheme boundaries — scrolling, resize and --watch reloads cannot rot a selection, and a wide CJK glyph or ZWJ emoji is never cut in half.
• Code blocks nested in lists/blockquotes are deliberately not offered by c: they are laid out in a sub-buffer with no absolute row, so labelling them would point at the wrong line.
• v/V copy lines as drawn, ink's heading bars included — they select what you can see. c and Y are the tools for source.

QA (all local)

gate	result
cargo test	✓ 190 passed
cargo clippy --all-targets -- -D warnings	✓
cargo build --release	✓
cargo check	✓
cargo fmt --check	✓
security review	0 critical / 0 high; OSC 52 payload is base64 so a hostile document cannot break out of the sequence; the native helper takes text on stdin, never through a shell
secret scan	0 hits
code review	1 critical found and fixed before commit: dedent measured the shared indent in bytes and sliced by byte offset, which panics on mixed-width leading whitespace (U+3000 + U+00A0). Now compares the actual character prefix; regression test included.
test adequacy	+58 tests — selection extraction and column math, clipboard payloads, code-block discovery, section boundaries, screen→document mapping, legacy theme loading, escape stripping

Behaviour was also driven end to end against the real binary in a pty (synthetic keys and SGR mouse events, OSC 52 payload decoded back out of the terminal stream), covering drag, double/triple-click, word motions, c, Y, f Y, and every clipboard config mode.