T59: the newest line typed is the one of the highest number, not the lowest on the screen, so a prompt drawn at the top over older lines takes its clicks; a press goes no lower than that line's last row or the cursor's

AGENTS.md

@@ -114,4 +114,4 @@ ELYTerminal. A terminal on GPUI and Ely components. `PRD.md` says what it does;
 - 2026-10-19: a drag moves Ely along the edge she stands on, which the owner asked for after 0.1.5. On macOS, Windows and X11 her glue moves her window after the pointer's place on the screen, `NSEvent`'s `mouseLocation`, `GetCursorPos` and `query_pointer`, since her window moves under the pointer, so a place in it would lag; her window keeps the pointer while the button is held, inside it or not, as AppKit, gpui's `SetCapture` and X's implicit grab give it. A Wayland popup cannot move, so there she moves once let go: the settings keep the place, and the twice-a-second check opens her popup there. She moves by whole points inside the pane, and `ely_left` keeps where she stands, 140 by default, where she stood before; a narrower pane holds her at its right end, and the log names where she is let go. Under Xorg's dummy screen xdotool dragged her 200 pixels and her window followed them; under Sway nested in Xorg, whose X input gives its seat a pointer, xdotool's drag reopened her popup 200 points on. Sway's own `seat cursor` commands send no motion while their press is held, and Sway draws no popup opened before its window settled, so a probe there reopens her before it drags.
 - 2026-10-19: Settings › Terminal checks for updates, which the owner asked for after 0.1.5: under Ely, a switch, on by default, checks at start and once a day, and Check now checks at once. The check runs `curl`, as git runs through its command line, so no HTTP or TLS crate joins the build; macOS and Windows 10 ship it, and a missing curl shows as a failed check. It asks Gitea's API for the latest published release, compares its tag's three numbers with the running version, and the row says what it found; a newer one brings Download, which opens the release's page in the browser, since replacing a running, signed app is a job of its own. An automatic check that finds one posts a system notification, at most once a day, whose press opens the page. Checks run off the main thread, one at a time, each start and finding logged; a failure shows its error in the row. Under Xorg's dummy screen the start's check found 0.1.5 the latest, Check now and the switch checked again, and a build named 0.1.4 showed 0.1.5 out with Download, which opened its page.
 - 2026-10-19: the terminal shows a scrollbar, which a user asked for in issue #2 after 0.1.5: a program that tracks the mouse takes the wheel, so the wheel alone could not reach the history. A thumb rides the view's right edge, over the padding, in Ely's scrollbar sizes and colors, its thickness, its least length and the foreground at 22 and 42 percent; its length is the screen's share of the history, and its place where the view stands. A drag moves the view through the history, whatever mouse mode the program asked for; the bar covers the grid's hitbox, so the terminal sees none of its presses, and a release with no press of its own reports nothing. Ely's `Scrollbar` reads a gpui `ScrollHandle`, and the terminal's place is alacritty's display offset, so the bar is the terminal's own, drawn as Ely draws hers and dragged through gpui's drag as hers is; gpui sets a drag's anchor at its first move past the threshold, so a pointer that jumps far at once loses that jump. The alternate screen holds no history, so it shows none. Under Xorg's dummy screen, 500 lines in, a drag to the top showed the first prompt and lines 1 to 39, and with mouse tracking on, which sent the wheel to the program, the bar still scrolled.
-- 2026-10-19: a plain click on the line the shell reads moves its cursor there, which a user asked for after 0.1.6, as Ghostty's `cursor-click-to-move`: a press with no modifier, one click, let go in its own cell with no selection, while OSC 133 says the shell reads a line, B since the last A or C, and the program tracks no mouse at the release. A shell whose prompt start says `click_events=1` or `2`, as fish from 4.1 says on its own, hears a click past the prompt's last cell before the cursor, or, where no prompt cell of its own line comes before the input, as under fish's empty prompt, from the first cell of the newest line typed, and never on a prompt cell, itself, a left press in SGR, its row the screen's or counted from the prompt's first, as kitty and Ghostty send it, and moves its own cursor, combining marks and its own redraws included: fish moves by code point, and its redraws drop the wrap flags a count would follow. Any other shell gets Left or Right arrows, one per cell, each pressed and let go as the keyboard would, through the key encoder, so DECCKM, kitty's flags and win32-input-mode shape them; the count runs only on the cursor's line, soft wraps joined, past the prompt's cells, which the prompt's link marks, so bash 3.2, which sends no C, moves nothing once its command left the prompt's line. Cells after the last character typed count only up to the cursor, so a click past the end goes to the end; a wide character takes one arrow. Never on the alternate screen. One line only, as Ghostty's `cl=line`. A right prompt or an autosuggestion past the typed text counts as text, as in Ghostty, so a click on it may take the suggestion. The first click of a double click moves the cursor before the word selects, as in Ghostty.
+- 2026-10-19: a plain click on the line the shell reads moves its cursor there, which a user asked for after 0.1.6, as Ghostty's `cursor-click-to-move`: a press with no modifier, one click, let go in its own cell with no selection, while OSC 133 says the shell reads a line, B since the last A or C, and the program tracks no mouse at the release. A shell whose prompt start says `click_events=1` or `2`, as fish from 4.1 says on its own, hears a click past the prompt's last cell before the cursor, or, where no prompt cell of its own line comes before the input, as under fish's empty prompt, from the first cell of the newest line typed, known by its number, not its place, since a prompt drawn at the screen's top leaves older lines below it, down to that line's last row or the cursor's, and never on a prompt cell, itself, a left press in SGR, its row the screen's or counted from the prompt's first, as kitty and Ghostty send it, and moves its own cursor, combining marks and its own redraws included: fish moves by code point, and its redraws drop the wrap flags a count would follow. Any other shell gets Left or Right arrows, one per cell, each pressed and let go as the keyboard would, through the key encoder, so DECCKM, kitty's flags and win32-input-mode shape them; the count runs only on the cursor's line, soft wraps joined, past the prompt's cells, which the prompt's link marks, so bash 3.2, which sends no C, moves nothing once its command left the prompt's line. Cells after the last character typed count only up to the cursor, so a click past the end goes to the end; a wide character takes one arrow. Never on the alternate screen. One line only, as Ghostty's `cl=line`. A right prompt or an autosuggestion past the typed text counts as text, as in Ghostty, so a click on it may take the suggestion. The first click of a double click moves the cursor before the word selects, as in Ghostty.