fix(combine): let the cards zoom to 500% (#2531)

The Combine grid stopped at 200%, too small to read a value off an invoice
while reordering the pages of a statement. The main viewer already reached
6400%, so only the card grid was capped.

- The range is 60–500%, and the buttons and keys step
  60/80/100/125/150/175/200/250/300/400/500%.
- MAX_SIDE, the thumbnail texture cap, goes 768 → 1536, so a card near the top
  re-renders sharper instead of upscaling a 768px texture. It only binds near the
  top: a card below it asks for less and costs no more than it did. Up there one
  thumbnail is a few megabytes, so TEXTURE_BUDGET and UPLOAD_BYTES_PER_FRAME keep
  the cache at a screenful plus one frame's uploads — and a screenful at the top
  of the range is a card or two, because a card is wider than most windows.
- The control channel's range message is derived from the constant rather than
  repeating "60 and 200", so it cannot drift from the range again.

parity/acrobat-features.toml

@@ -2992,8 +2992,8 @@ milestone = "M4"
 status = "shipped"
 commands = ["page.combine"]
 tools = ["doc_combine"]
-evidence = ["crates/ui-egui/tests/combine_grid.rs::combine_shows_a_grid_by_default_and_the_view_is_kept_in_the_settings", "crates/ui-egui/tests/combine_grid.rs::cards_select_like_the_list_and_the_selection_survives_switching_views", "crates/ui-egui/tests/combine_grid.rs::dragging_a_card_moves_it_and_undo_puts_it_back", "crates/ui-egui/tests/combine_grid.rs::a_dragged_selection_moves_together_to_the_first_and_last_gaps", "crates/ui-egui/tests/combine_grid.rs::thumbnails_show_the_first_page_each_file_takes", "crates/ui-egui/tests/combine_grid.rs::many_files_render_only_what_is_in_view_a_few_at_a_time", "crates/ui-egui/tests/combine_grid.rs::long_thin_pages_get_thumbnails_within_the_size_limits", "crates/ui-egui/tests/combine_grid.rs::combine_follows_the_order_shown_in_the_grid", "crates/ui-egui/src/combine_grid.rs::render_threads_never_exceed_three_while_files_come_and_go", "crates/ui-egui/src/combine_grid.rs::textures_over_budget_go_longest_unseen_first_and_those_in_view_stay", "crates/ui-egui/src/combine_grid.rs::on_the_web_one_thumbnail_waits_at_a_time", "crates/ui-egui/tests/combine_grid.rs::a_file_whose_pages_cant_be_measured_says_there_is_no_preview", "crates/ui-egui/tests/combine_grid.rs::the_toolbar_sizes_the_cards_within_limits_and_the_size_is_kept_in_the_settings", "crates/ui-egui/tests/combine_grid.rs::ctrl_keys_and_ctrl_wheel_size_the_cards_and_leave_the_window_alone", "crates/ui-egui/tests/combine_grid.rs::zooming_keeps_the_card_under_the_pointer_in_place_and_thumbnails_never_go_blank", "crates/ui-egui/tests/combine_grid.rs::zooming_quickly_never_runs_more_than_three_render_threads", "crates/ui-egui/tests/combine_grid.rs::hovering_a_card_shows_its_trash_and_magnifier_and_only_then", "crates/ui-egui/tests/combine_grid.rs::the_card_trash_removes_only_that_file_and_undo_brings_it_back", "crates/ui-egui/tests/combine_grid.rs::the_magnifier_shows_the_file_large_and_flips_through_the_pages_it_adds", "crates/ui-egui/tests/combine_grid.rs::the_preview_closes_when_its_file_leaves_and_keeps_to_three_render_threads", "crates/ui-egui/tests/combine_grid.rs::a_right_click_on_a_card_offers_preview_and_remove", "crates/ui-egui/tests/combine_grid.rs::space_shows_the_selected_file_large_in_the_grid_and_the_list", "crates/ui-egui/tests/combine_grid.rs::expanding_a_file_shows_the_pages_it_adds_in_order_with_their_numbers", "crates/ui-egui/tests/combine_grid.rs::expand_all_and_collapse_all_from_the_toolbar_and_a_right_click", "crates/ui-egui/tests/combine_grid.rs::expanding_is_a_view_kept_across_views_and_zoom_and_never_an_undo_step", "crates/ui-egui/tests/combine_grid.rs::dragging_a_page_moves_that_page_even_between_another_files_pages", "crates/ui-egui/tests/combine_grid.rs::combining_with_files_expanded_gives_the_same_document", "crates/ui-egui/tests/combine_grid.rs::a_page_click_selects_that_page_and_the_arrows_step_rows_of_cards", "crates/ui-egui/tests/combine_grid.rs::a_page_cards_magnifier_opens_the_preview_on_that_page", "crates/ui-egui/tests/combine_grid.rs::a_long_file_expanded_renders_only_its_pages_in_view_within_three_threads", "crates/ui-egui/tests/combine_grid.rs::collapsing_brings_the_files_card_into_view", "crates/ui-egui/tests/combine_grid.rs::a_file_too_long_to_spread_out_offers_no_expand", "crates/ui-egui/src/combine_grid.rs::the_next_page_of_a_file_reuses_its_open_document_until_it_closes", "crates/ui-egui/tests/combine_grid.rs::removing_pages_from_the_hover_bar_the_toolbar_and_delete_never_touches_the_file", "crates/ui-egui/tests/combine_grid.rs::a_split_file_counts_once_and_combines_with_one_bookmark", "crates/ui-egui/src/combine_ui.rs::a_page_moved_between_another_files_pages_splits_its_file_and_parts_rejoin", "crates/ui-egui/src/combine_ui.rs::removing_pages_drops_emptied_parts_and_joins_what_meets", "crates/ui-egui/src/combine_ui.rs::page_lists_become_the_shortest_range", "crates/ui-egui/tests/combine_grid.rs::pages_picked_out_of_sight_or_before_an_undo_are_let_go_of", "crates/ui-egui/tests/combine_grid.rs::a_files_parts_join_when_what_was_between_them_goes_and_one_file_cannot_be_combined", "crates/organize/src/tests.rs::a_page_shown_twice_gets_its_own_annotations", "crates/engine/src/tests.rs::a_page_with_a_form_field_shown_twice_keeps_one_field", "crates/ui-egui/tests/combine_grid.rs::files_picked_by_automation_let_go_of_the_pages_picked"]
-notes = "Combine files shows a card per file (the default; Grid/List toggle kept in the settings, --combine-view grid|list): the first page the file contributes (its page range's first page), stacked when it contributes more, and its name shortened in the middle. Cards are sized from 60% to 200% (toolbar slider, buttons and percentage reset, Ctrl/⌘ +/−/0, Ctrl/⌘ with the wheel or a pinch over the grid; kept in the settings, --combine-zoom 60..200), keeping the card under the pointer in place. Hovering a card shows its own actions along the top of its page: remove that file only (whatever else is selected; undoable) and a magnifier that shows the file large, flipping through the pages it adds (buttons, Left/Right; Esc, close or a click outside closes it), also on the card's right-click menu, and Space shows the selected file large (the way there by keyboard). Cards select (click, Ctrl, Shift, arrows by card and by row), drag to reorder (one undo step; the grid scrolls at its edges) and share the list's toolbar. Thumbnails render off the UI thread, only for cards in view, sized to both sides of the page and at most 768 px; at most three render threads at once, counted as threads until they exit (no watchdog replacements; a page stuck for good in one step that can't be interrupted keeps its thread, and so its place, for the rest of the run); textures out of view are dropped over a 32 MB budget (those in view are kept). Locked, unreadable and bad-range files show why instead of a page, and a file whose page size can't be read (e.g. opened with an RC4 owner password) says No preview; page ranges are edited in the list. On the web a thumbnail, and the page shown large, render on the UI thread (one per frame, and only one waits at a time), so a very slow or very large page stalls that frame. A file that adds more than one page (up to 2000) expands into its pages (hover bar, right-click, or Expand all / Collapse all in the toolbar): one card per page it adds, in its range's order, each saying Page N and the file's name, on a tinted band; a click on a page selects that page, Up/Down step rows of cards, dragging a file's card moves the whole file (a drop among a file's pages goes to its nearer end), and its magnifier opens the preview on that page; expanding is a view, not an undo step, and changes nothing in the combined file; a page's render reuses its file's open document for a moment rather than reading the file again. With a file expanded, single pages are selected (click, Ctrl, Shift), dragged anywhere (a page moved between another file's pages splits its file into parts, shown as rows in the list with their own page ranges; parts side by side join again) and removed (a page card's trash, the toolbar, Delete), each one undo step, never changing the files themselves; a split file still counts and combines as one file."
+evidence = ["crates/ui-egui/tests/combine_grid.rs::combine_shows_a_grid_by_default_and_the_view_is_kept_in_the_settings", "crates/ui-egui/tests/combine_grid.rs::cards_select_like_the_list_and_the_selection_survives_switching_views", "crates/ui-egui/tests/combine_grid.rs::dragging_a_card_moves_it_and_undo_puts_it_back", "crates/ui-egui/tests/combine_grid.rs::a_dragged_selection_moves_together_to_the_first_and_last_gaps", "crates/ui-egui/tests/combine_grid.rs::thumbnails_show_the_first_page_each_file_takes", "crates/ui-egui/tests/combine_grid.rs::many_files_render_only_what_is_in_view_a_few_at_a_time", "crates/ui-egui/tests/combine_grid.rs::long_thin_pages_get_thumbnails_within_the_size_limits", "crates/ui-egui/tests/combine_grid.rs::combine_follows_the_order_shown_in_the_grid", "crates/ui-egui/src/combine_grid.rs::render_threads_never_exceed_three_while_files_come_and_go", "crates/ui-egui/src/combine_grid.rs::textures_over_budget_go_longest_unseen_first_and_those_in_view_stay", "crates/ui-egui/src/combine_grid.rs::on_the_web_one_thumbnail_waits_at_a_time", "crates/ui-egui/tests/combine_grid.rs::a_file_whose_pages_cant_be_measured_says_there_is_no_preview", "crates/ui-egui/tests/combine_grid.rs::the_toolbar_sizes_the_cards_within_limits_and_the_size_is_kept_in_the_settings", "crates/ui-egui/src/combine_grid.rs::the_cards_zoom_far_enough_to_read_a_value", "crates/ui-egui/tests/combine_grid.rs::ctrl_keys_and_ctrl_wheel_size_the_cards_and_leave_the_window_alone", "crates/ui-egui/tests/combine_grid.rs::zooming_keeps_the_card_under_the_pointer_in_place_and_thumbnails_never_go_blank", "crates/ui-egui/tests/combine_grid.rs::zooming_quickly_never_runs_more_than_three_render_threads", "crates/ui-egui/tests/combine_grid.rs::hovering_a_card_shows_its_trash_and_magnifier_and_only_then", "crates/ui-egui/tests/combine_grid.rs::the_card_trash_removes_only_that_file_and_undo_brings_it_back", "crates/ui-egui/tests/combine_grid.rs::the_magnifier_shows_the_file_large_and_flips_through_the_pages_it_adds", "crates/ui-egui/tests/combine_grid.rs::the_preview_closes_when_its_file_leaves_and_keeps_to_three_render_threads", "crates/ui-egui/tests/combine_grid.rs::a_right_click_on_a_card_offers_preview_and_remove", "crates/ui-egui/tests/combine_grid.rs::space_shows_the_selected_file_large_in_the_grid_and_the_list", "crates/ui-egui/tests/combine_grid.rs::expanding_a_file_shows_the_pages_it_adds_in_order_with_their_numbers", "crates/ui-egui/tests/combine_grid.rs::expand_all_and_collapse_all_from_the_toolbar_and_a_right_click", "crates/ui-egui/tests/combine_grid.rs::expanding_is_a_view_kept_across_views_and_zoom_and_never_an_undo_step", "crates/ui-egui/tests/combine_grid.rs::dragging_a_page_moves_that_page_even_between_another_files_pages", "crates/ui-egui/tests/combine_grid.rs::combining_with_files_expanded_gives_the_same_document", "crates/ui-egui/tests/combine_grid.rs::a_page_click_selects_that_page_and_the_arrows_step_rows_of_cards", "crates/ui-egui/tests/combine_grid.rs::a_page_cards_magnifier_opens_the_preview_on_that_page", "crates/ui-egui/tests/combine_grid.rs::a_long_file_expanded_renders_only_its_pages_in_view_within_three_threads", "crates/ui-egui/tests/combine_grid.rs::collapsing_brings_the_files_card_into_view", "crates/ui-egui/tests/combine_grid.rs::a_file_too_long_to_spread_out_offers_no_expand", "crates/ui-egui/src/combine_grid.rs::the_next_page_of_a_file_reuses_its_open_document_until_it_closes", "crates/ui-egui/tests/combine_grid.rs::removing_pages_from_the_hover_bar_the_toolbar_and_delete_never_touches_the_file", "crates/ui-egui/tests/combine_grid.rs::a_split_file_counts_once_and_combines_with_one_bookmark", "crates/ui-egui/src/combine_ui.rs::a_page_moved_between_another_files_pages_splits_its_file_and_parts_rejoin", "crates/ui-egui/src/combine_ui.rs::removing_pages_drops_emptied_parts_and_joins_what_meets", "crates/ui-egui/src/combine_ui.rs::page_lists_become_the_shortest_range", "crates/ui-egui/tests/combine_grid.rs::pages_picked_out_of_sight_or_before_an_undo_are_let_go_of", "crates/ui-egui/tests/combine_grid.rs::a_files_parts_join_when_what_was_between_them_goes_and_one_file_cannot_be_combined", "crates/organize/src/tests.rs::a_page_shown_twice_gets_its_own_annotations", "crates/engine/src/tests.rs::a_page_with_a_form_field_shown_twice_keeps_one_field", "crates/ui-egui/tests/combine_grid.rs::files_picked_by_automation_let_go_of_the_pages_picked"]
+notes = "Combine files shows a card per file (the default; Grid/List toggle kept in the settings, --combine-view grid|list): the first page the file contributes (its page range's first page), stacked when it contributes more, and its name shortened in the middle. Cards are sized from 60% to 500% (toolbar slider, buttons and percentage reset, Ctrl/⌘ +/−/0, Ctrl/⌘ with the wheel or a pinch over the grid; the buttons step 60/80/100/125/150/175/200/250/300/400/500%, kept in the settings, --combine-zoom 60..500), keeping the card under the pointer in place. 200% used to be the ceiling, which was too small to read values off an invoice while reordering the pages of a statement (#2531). Hovering a card shows its own actions along the top of its page: remove that file only (whatever else is selected; undoable) and a magnifier that shows the file large, flipping through the pages it adds (buttons, Left/Right; Esc, close or a click outside closes it), also on the card's right-click menu, and Space shows the selected file large (the way there by keyboard). Cards select (click, Ctrl, Shift, arrows by card and by row), drag to reorder (one undo step; the grid scrolls at its edges) and share the list's toolbar. Thumbnails render off the UI thread, only for cards in view, sized to both sides of the page and at most 1536 px (room for a Letter page at 500% on a 1.5 pixels-per-point screen); at most three render threads at once, counted as threads until they exit (no watchdog replacements; a page stuck for good in one step that can't be interrupted keeps its thread, and so its place, for the rest of the run); textures out of view are dropped over a 32 MB budget (those in view are kept). Locked, unreadable and bad-range files show why instead of a page, and a file whose page size can't be read (e.g. opened with an RC4 owner password) says No preview; page ranges are edited in the list. On the web a thumbnail, and the page shown large, render on the UI thread (one per frame, and only one waits at a time), so a very slow or very large page stalls that frame. A file that adds more than one page (up to 2000) expands into its pages (hover bar, right-click, or Expand all / Collapse all in the toolbar): one card per page it adds, in its range's order, each saying Page N and the file's name, on a tinted band; a click on a page selects that page, Up/Down step rows of cards, dragging a file's card moves the whole file (a drop among a file's pages goes to its nearer end), and its magnifier opens the preview on that page; expanding is a view, not an undo step, and changes nothing in the combined file; a page's render reuses its file's open document for a moment rather than reading the file again. With a file expanded, single pages are selected (click, Ctrl, Shift), dragged anywhere (a page moved between another file's pages splits its file into parts, shown as rows in the list with their own page ranges; parts side by side join again) and removed (a page card's trash, the toolbar, Delete), each one undo step, never changing the files themselves; a split file still counts and combines as one file."
 
 [[feature]]
 id = "organize.combine-options"