Add code editing features to the scripting terminal

[rubensworks]

Phase 3 of the scripting terminal UX improvements, stacked on #78 (which is stacked on #77). One commit per feature.

I checked each problem on the previous phase's build in a dev client driven by clientdevbridge, then checked the feature with this branch.

Commit	Problem before	Result with this PR
Indent with tab in the script editor	Tab inserted nothing.	Tab inserts one indent, or indents every selected line; Shift+Tab removes one level.
Keep indentation on enter in the script editor	Enter after an indented line put the cursor in column 0.	The new line keeps the indentation, gets one more level after {, ( or [, and {} is split so the closing bracket gets its own line.
Highlight matching brackets in the script editor	Hard to see which bracket closes which block.	The bracket next to the cursor and its match are highlighted.
Add find and go to line to the script editor	No way to search; you had to scroll.	Ctrl+F finds text and Ctrl+G goes to a line number.
Add toggle comment and move lines to the script editor	Commenting out or moving lines meant editing each line by hand.	Ctrl+/ toggles // on the current or selected lines; Alt+Up/Down moves them. Both are undoable.
Scroll the script editor while drag-selecting	Dragging below the editor stopped at the 12 visible lines.	The editor scrolls while you drag (19 lines selected, view moved to row 7).
Close the find field when the scripting terminal is resized	After a resize with the find field open, the field was gone but still received key presses.	Checked: after a resize, typing goes to the editor.
Make the indent size of the script editor configurable	The indent was a fixed 4 spaces, which is wide in the small editor and doesn't match every code style.	New client option terminalScriptingIndentSize (1–16), default 2, the common JavaScript style. Checked in-game: Tab and Enter-after-{ use 2 spaces; after changing the config file to 4, Tab added 4 without restarting the game.
Show find and go to line in a search bar below the editor	The first version's find field floated over the top right of the code. It covered a match on line 1, had no label and no match count, and gave no feedback when nothing matched.	A search bar below the editor, which takes the space of the bottom row. It shows a Find: or Line: label, the current match and total (2/29), and previous/next buttons (also Shift+Enter / Enter). All matches are highlighted, and the input turns red when nothing matches (0/0) or the line number is invalid. Escape closes the bar before it closes the screen. Checked in-game: wrap-around in both directions with the view following, the count updating while editing with the bar open, the editor regaining its full height when closed, and the bar closing on resize.
Add toolbar buttons for editor actions	All of the above were only reachable through keyboard shortcuts, which players have no way to discover.	Small icon buttons next to the terminal title: undo, redo, find, go to line and toggle comment. Each tooltip shows the action and its shortcut. Undo/redo are dimmed and inactive when there is nothing to undo or redo.
Don't let a long terminal title overlap the toolbar	With the toolbar, longer translations of the title (for example pt_br) ran under the buttons.	The title is cut off before the toolbar.
Remove the keyboard shortcuts button from the editor toolbar	A separate help button that only listed all shortcuts mostly repeated the other buttons' tooltips.	Removed, along with its icon.
Make the script editor shortcuts rebindable	The shortcuts were hardcoded, so players couldn't change them, for example when they clash with another mod.	Undo, redo, find, go to line, toggle comment and move lines up/down are key mappings under "Integrated Scripting" in Controls, and the tooltips show the current key. Modifiers must match exactly, so Ctrl+Shift+Z doesn't trigger Ctrl+Z (5 unit tests). Ctrl+Shift+Z stays as a fixed extra redo key, since a key mapping can only have one modifier. Checked in-game: all defaults work; after rebinding Find in the Controls screen, the tooltip shows the new key, the new key opens find, and Ctrl+F no longer does.
Document the script editor shortcuts in the info book	The shortcuts were only discoverable through tooltips.	New "Editor Shortcuts" section after "Scripting Terminal", with a keybinding appendix per rebindable shortcut and a paragraph for the fixed keys (Tab, Page Up/Down, search bar keys).
Use an ellipsis character when truncating the terminal title	Truncation used three dots.	Uses …, which is narrower.
Keep scrolling while a drag selection is held outside the editor	Scrolling only happened once per mouse movement beyond the editor, so holding the mouse still below the last line stopped scrolling, and the speed depended on how fast the mouse moved.	Scrolls every tick while held, from about 5 lines per second right below the last line to about 50 further away, in both directions. Starts as soon as the mouse is below the last visible line, and stops on release (checked: no further scrolling 2 seconds after release). Also checked in focus mode.
Document word and line navigation keys in the info book	The word and line keys from #77 were not listed.	Added to the fixed keys paragraph, including the macOS variants.

I left out duplicate-line, which was in the original plan: copy/paste already covers it.

Known issues

• With the current CyclopsCore, the keybinding appendix shows letter keys as key.keyboard.z and leaves out the modifier. This is fixed in Show the bound key in key binding appendices CyclopsCore#255; I checked this section against that branch, and it shows CTRL + Z, ALT + Up Arrow and so on. Bumping cyclopscore_version after that is released makes it show correctly here.
• NeoForge's Controls screen marks Toggle comment (Ctrl+/) red, because it counts it as a conflict with vanilla's universal "Open Command" key (/). There is no actual clash at runtime, since our keys are only checked inside the terminal.

All text logic is in a new TextEditing class with 38 unit tests, covering both indent sizes and the search helpers.

Testing

• ./gradlew build passes, including the new unit tests.
• ./gradlew runGameTestServer: all 22 tests pass.

🤖 Generated with Claude Code

https://claude.ai/code/session_018MRyTdV3fSV5Q5NPGep4q9

[coveralls]

Coverage Report for CI Build 39131775591

Coverage decreased (-2.3%) to 44.119%

Details

• Coverage decreased (-2.3%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 579 coverage regressions across 6 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

579 previously-covered lines in 6 files lost coverage.

File	Lines Losing Coverage	Coverage
org/cyclops/integratedscripting/client/gui/component/input/WidgetTextArea.java	315	0.0%
org/cyclops/integratedscripting/client/gui/container/ContainerScreenTerminalScripting.java	246	0.0%
org/cyclops/integratedscripting/proxy/ClientProxy.java	6	0.0%
org/cyclops/integratedscripting/client/gui/image/ScriptImages.java	5	0.0%
org/cyclops/integratedscripting/inventory/container/ContainerTerminalScripting.java	5	23.75%
org/cyclops/integratedscripting/client/gui/component/input/TextHistory.java	2	86.54%

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Coverage Stats

Relevant Lines:	3253
Covered Lines:	1562
Line Coverage:	48.02%
Relevant Branches:	1287
Covered Branches:	441
Branch Coverage:	34.27%
Branches in Coverage %:	Yes
Coverage Strength:	22.68 hits per line

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💛 - Coveralls

[rubensworks]

Replaced by #86: same changes, rebased with every commit as one standalone change.

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Generated by Claude Code