update

pi-mono-reference/packages/tui/src/components/box.ts

@@ -0,0 +1,137 @@
+import type { Component } from "../tui.js";
+import { applyBackgroundToLine, visibleWidth } from "../utils.js";
+
+type RenderCache = {
+	childLines: string[];
+	width: number;
+	bgSample: string | undefined;
+	lines: string[];
+};
+
+/**
+ * Box component - a container that applies padding and background to all children
+ */
+export class Box implements Component {
+	children: Component[] = [];
+	private paddingX: number;
+	private paddingY: number;
+	private bgFn?: (text: string) => string;
+
+	// Cache for rendered output
+	private cache?: RenderCache;
+
+	constructor(paddingX = 1, paddingY = 1, bgFn?: (text: string) => string) {
+		this.paddingX = paddingX;
+		this.paddingY = paddingY;
+		this.bgFn = bgFn;
+	}
+
+	addChild(component: Component): void {
+		this.children.push(component);
+		this.invalidateCache();
+	}
+
+	removeChild(component: Component): void {
+		const index = this.children.indexOf(component);
+		if (index !== -1) {
+			this.children.splice(index, 1);
+			this.invalidateCache();
+		}
+	}
+
+	clear(): void {
+		this.children = [];
+		this.invalidateCache();
+	}
+
+	setBgFn(bgFn?: (text: string) => string): void {
+		this.bgFn = bgFn;
+		// Don't invalidate here - we'll detect bgFn changes by sampling output
+	}
+
+	private invalidateCache(): void {
+		this.cache = undefined;
+	}
+
+	private matchCache(width: number, childLines: string[], bgSample: string | undefined): boolean {
+		const cache = this.cache;
+		return (
+			!!cache &&
+			cache.width === width &&
+			cache.bgSample === bgSample &&
+			cache.childLines.length === childLines.length &&
+			cache.childLines.every((line, i) => line === childLines[i])
+		);
+	}
+
+	invalidate(): void {
+		this.invalidateCache();
+		for (const child of this.children) {
+			child.invalidate?.();
+		}
+	}
+
+	render(width: number): string[] {
+		if (this.children.length === 0) {
+			return [];
+		}
+
+		const contentWidth = Math.max(1, width - this.paddingX * 2);
+		const leftPad = " ".repeat(this.paddingX);
+
+		// Render all children
+		const childLines: string[] = [];
+		for (const child of this.children) {
+			const lines = child.render(contentWidth);
+			for (const line of lines) {
+				childLines.push(leftPad + line);
+			}
+		}
+
+		if (childLines.length === 0) {
+			return [];
+		}
+
+		// Check if bgFn output changed by sampling
+		const bgSample = this.bgFn ? this.bgFn("test") : undefined;
+
+		// Check cache validity
+		if (this.matchCache(width, childLines, bgSample)) {
+			return this.cache!.lines;
+		}
+
+		// Apply background and padding
+		const result: string[] = [];
+
+		// Top padding
+		for (let i = 0; i < this.paddingY; i++) {
+			result.push(this.applyBg("", width));
+		}
+
+		// Content
+		for (const line of childLines) {
+			result.push(this.applyBg(line, width));
+		}
+
+		// Bottom padding
+		for (let i = 0; i < this.paddingY; i++) {
+			result.push(this.applyBg("", width));
+		}
+
+		// Update cache
+		this.cache = { childLines, width, bgSample, lines: result };
+
+		return result;
+	}
+
+	private applyBg(line: string, width: number): string {
+		const visLen = visibleWidth(line);
+		const padNeeded = Math.max(0, width - visLen);
+		const padded = line + " ".repeat(padNeeded);
+
+		if (this.bgFn) {
+			return applyBackgroundToLine(padded, width, this.bgFn);
+		}
+		return padded;
+	}
+}

pi-mono-reference/packages/tui/src/components/cancellable-loader.ts

@@ -0,0 +1,40 @@
+import { getKeybindings } from "../keybindings.js";
+import { Loader } from "./loader.js";
+
+/**
+ * Loader that can be cancelled with Escape.
+ * Extends Loader with an AbortSignal for cancelling async operations.
+ *
+ * @example
+ * const loader = new CancellableLoader(tui, cyan, dim, "Working...");
+ * loader.onAbort = () => done(null);
+ * doWork(loader.signal).then(done);
+ */
+export class CancellableLoader extends Loader {
+	private abortController = new AbortController();
+
+	/** Called when user presses Escape */
+	onAbort?: () => void;
+
+	/** AbortSignal that is aborted when user presses Escape */
+	get signal(): AbortSignal {
+		return this.abortController.signal;
+	}
+
+	/** Whether the loader was aborted */
+	get aborted(): boolean {
+		return this.abortController.signal.aborted;
+	}
+
+	handleInput(data: string): void {
+		const kb = getKeybindings();
+		if (kb.matches(data, "tui.select.cancel")) {
+			this.abortController.abort();
+			this.onAbort?.();
+		}
+	}
+
+	dispose(): void {
+		this.stop();
+	}
+}

pi-mono-reference/packages/tui/src/components/image.ts

@@ -0,0 +1,104 @@
+import {
+	getCapabilities,
+	getImageDimensions,
+	type ImageDimensions,
+	imageFallback,
+	renderImage,
+} from "../terminal-image.js";
+import type { Component } from "../tui.js";
+
+export interface ImageTheme {
+	fallbackColor: (str: string) => string;
+}
+
+export interface ImageOptions {
+	maxWidthCells?: number;
+	maxHeightCells?: number;
+	filename?: string;
+	/** Kitty image ID. If provided, reuses this ID (for animations/updates). */
+	imageId?: number;
+}
+
+export class Image implements Component {
+	private base64Data: string;
+	private mimeType: string;
+	private dimensions: ImageDimensions;
+	private theme: ImageTheme;
+	private options: ImageOptions;
+	private imageId?: number;
+
+	private cachedLines?: string[];
+	private cachedWidth?: number;
+
+	constructor(
+		base64Data: string,
+		mimeType: string,
+		theme: ImageTheme,
+		options: ImageOptions = {},
+		dimensions?: ImageDimensions,
+	) {
+		this.base64Data = base64Data;
+		this.mimeType = mimeType;
+		this.theme = theme;
+		this.options = options;
+		this.dimensions = dimensions || getImageDimensions(base64Data, mimeType) || { widthPx: 800, heightPx: 600 };
+		this.imageId = options.imageId;
+	}
+
+	/** Get the Kitty image ID used by this image (if any). */
+	getImageId(): number | undefined {
+		return this.imageId;
+	}
+
+	invalidate(): void {
+		this.cachedLines = undefined;
+		this.cachedWidth = undefined;
+	}
+
+	render(width: number): string[] {
+		if (this.cachedLines && this.cachedWidth === width) {
+			return this.cachedLines;
+		}
+
+		const maxWidth = Math.min(width - 2, this.options.maxWidthCells ?? 60);
+
+		const caps = getCapabilities();
+		let lines: string[];
+
+		if (caps.images) {
+			const result = renderImage(this.base64Data, this.dimensions, {
+				maxWidthCells: maxWidth,
+				imageId: this.imageId,
+			});
+
+			if (result) {
+				// Store the image ID for later cleanup
+				if (result.imageId) {
+					this.imageId = result.imageId;
+				}
+
+				// Return `rows` lines so TUI accounts for image height
+				// First (rows-1) lines are empty (TUI clears them)
+				// Last line: move cursor back up, then output image sequence
+				lines = [];
+				for (let i = 0; i < result.rows - 1; i++) {
+					lines.push("");
+				}
+				// Move cursor up to first row, then output image
+				const moveUp = result.rows > 1 ? `\x1b[${result.rows - 1}A` : "";
+				lines.push(moveUp + result.sequence);
+			} else {
+				const fallback = imageFallback(this.mimeType, this.dimensions, this.options.filename);
+				lines = [this.theme.fallbackColor(fallback)];
+			}
+		} else {
+			const fallback = imageFallback(this.mimeType, this.dimensions, this.options.filename);
+			lines = [this.theme.fallbackColor(fallback)];
+		}
+
+		this.cachedLines = lines;
+		this.cachedWidth = width;
+
+		return lines;
+	}
+}

pi-mono-reference/packages/tui/src/components/input.ts

@@ -0,0 +1,503 @@
+import { getKeybindings } from "../keybindings.js";
+import { decodeKittyPrintable } from "../keys.js";
+import { KillRing } from "../kill-ring.js";
+import { type Component, CURSOR_MARKER, type Focusable } from "../tui.js";
+import { UndoStack } from "../undo-stack.js";
+import { getSegmenter, isPunctuationChar, isWhitespaceChar, sliceByColumn, visibleWidth } from "../utils.js";
+
+const segmenter = getSegmenter();
+
+interface InputState {
+	value: string;
+	cursor: number;
+}
+
+/**
+ * Input component - single-line text input with horizontal scrolling
+ */
+export class Input implements Component, Focusable {
+	private value: string = "";
+	private cursor: number = 0; // Cursor position in the value
+	public onSubmit?: (value: string) => void;
+	public onEscape?: () => void;
+
+	/** Focusable interface - set by TUI when focus changes */
+	focused: boolean = false;
+
+	// Bracketed paste mode buffering
+	private pasteBuffer: string = "";
+	private isInPaste: boolean = false;
+
+	// Kill ring for Emacs-style kill/yank operations
+	private killRing = new KillRing();
+	private lastAction: "kill" | "yank" | "type-word" | null = null;
+
+	// Undo support
+	private undoStack = new UndoStack<InputState>();
+
+	getValue(): string {
+		return this.value;
+	}
+
+	setValue(value: string): void {
+		this.value = value;
+		this.cursor = Math.min(this.cursor, value.length);
+	}
+
+	handleInput(data: string): void {
+		// Handle bracketed paste mode
+		// Start of paste: \x1b[200~
+		// End of paste: \x1b[201~
+
+		// Check if we're starting a bracketed paste
+		if (data.includes("\x1b[200~")) {
+			this.isInPaste = true;
+			this.pasteBuffer = "";
+			data = data.replace("\x1b[200~", "");
+		}
+
+		// If we're in a paste, buffer the data
+		if (this.isInPaste) {
+			// Check if this chunk contains the end marker
+			this.pasteBuffer += data;
+
+			const endIndex = this.pasteBuffer.indexOf("\x1b[201~");
+			if (endIndex !== -1) {
+				// Extract the pasted content
+				const pasteContent = this.pasteBuffer.substring(0, endIndex);
+
+				// Process the complete paste
+				this.handlePaste(pasteContent);
+
+				// Reset paste state
+				this.isInPaste = false;
+
+				// Handle any remaining input after the paste marker
+				const remaining = this.pasteBuffer.substring(endIndex + 6); // 6 = length of \x1b[201~
+				this.pasteBuffer = "";
+				if (remaining) {
+					this.handleInput(remaining);
+				}
+			}
+			return;
+		}
+
+		const kb = getKeybindings();
+
+		// Escape/Cancel
+		if (kb.matches(data, "tui.select.cancel")) {
+			if (this.onEscape) this.onEscape();
+			return;
+		}
+
+		// Undo
+		if (kb.matches(data, "tui.editor.undo")) {
+			this.undo();
+			return;
+		}
+
+		// Submit
+		if (kb.matches(data, "tui.input.submit") || data === "\n") {
+			if (this.onSubmit) this.onSubmit(this.value);
+			return;
+		}
+
+		// Deletion
+		if (kb.matches(data, "tui.editor.deleteCharBackward")) {
+			this.handleBackspace();
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.deleteCharForward")) {
+			this.handleForwardDelete();
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.deleteWordBackward")) {
+			this.deleteWordBackwards();
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.deleteWordForward")) {
+			this.deleteWordForward();
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.deleteToLineStart")) {
+			this.deleteToLineStart();
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.deleteToLineEnd")) {
+			this.deleteToLineEnd();
+			return;
+		}
+
+		// Kill ring actions
+		if (kb.matches(data, "tui.editor.yank")) {
+			this.yank();
+			return;
+		}
+		if (kb.matches(data, "tui.editor.yankPop")) {
+			this.yankPop();
+			return;
+		}
+
+		// Cursor movement
+		if (kb.matches(data, "tui.editor.cursorLeft")) {
+			this.lastAction = null;
+			if (this.cursor > 0) {
+				const beforeCursor = this.value.slice(0, this.cursor);
+				const graphemes = [...segmenter.segment(beforeCursor)];
+				const lastGrapheme = graphemes[graphemes.length - 1];
+				this.cursor -= lastGrapheme ? lastGrapheme.segment.length : 1;
+			}
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.cursorRight")) {
+			this.lastAction = null;
+			if (this.cursor < this.value.length) {
+				const afterCursor = this.value.slice(this.cursor);
+				const graphemes = [...segmenter.segment(afterCursor)];
+				const firstGrapheme = graphemes[0];
+				this.cursor += firstGrapheme ? firstGrapheme.segment.length : 1;
+			}
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.cursorLineStart")) {
+			this.lastAction = null;
+			this.cursor = 0;
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.cursorLineEnd")) {
+			this.lastAction = null;
+			this.cursor = this.value.length;
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.cursorWordLeft")) {
+			this.moveWordBackwards();
+			return;
+		}
+
+		if (kb.matches(data, "tui.editor.cursorWordRight")) {
+			this.moveWordForwards();
+			return;
+		}
+
+		// Kitty CSI-u printable character (e.g. \x1b[97u for 'a').
+		// Terminals with Kitty protocol flag 1 (disambiguate) send CSI-u for all keys,
+		// including plain printable characters. Decode before the control-char check
+		// since CSI-u sequences contain \x1b which would be rejected.
+		const kittyPrintable = decodeKittyPrintable(data);
+		if (kittyPrintable !== undefined) {
+			this.insertCharacter(kittyPrintable);
+			return;
+		}
+
+		// Regular character input - accept printable characters including Unicode,
+		// but reject control characters (C0: 0x00-0x1F, DEL: 0x7F, C1: 0x80-0x9F)
+		const hasControlChars = [...data].some((ch) => {
+			const code = ch.charCodeAt(0);
+			return code < 32 || code === 0x7f || (code >= 0x80 && code <= 0x9f);
+		});
+		if (!hasControlChars) {
+			this.insertCharacter(data);
+		}
+	}
+
+	private insertCharacter(char: string): void {
+		// Undo coalescing: consecutive word chars coalesce into one undo unit
+		if (isWhitespaceChar(char) || this.lastAction !== "type-word") {
+			this.pushUndo();
+		}
+		this.lastAction = "type-word";
+
+		this.value = this.value.slice(0, this.cursor) + char + this.value.slice(this.cursor);
+		this.cursor += char.length;
+	}
+
+	private handleBackspace(): void {
+		this.lastAction = null;
+		if (this.cursor > 0) {
+			this.pushUndo();
+			const beforeCursor = this.value.slice(0, this.cursor);
+			const graphemes = [...segmenter.segment(beforeCursor)];
+			const lastGrapheme = graphemes[graphemes.length - 1];
+			const graphemeLength = lastGrapheme ? lastGrapheme.segment.length : 1;
+			this.value = this.value.slice(0, this.cursor - graphemeLength) + this.value.slice(this.cursor);
+			this.cursor -= graphemeLength;
+		}
+	}
+
+	private handleForwardDelete(): void {
+		this.lastAction = null;
+		if (this.cursor < this.value.length) {
+			this.pushUndo();
+			const afterCursor = this.value.slice(this.cursor);
+			const graphemes = [...segmenter.segment(afterCursor)];
+			const firstGrapheme = graphemes[0];
+			const graphemeLength = firstGrapheme ? firstGrapheme.segment.length : 1;
+			this.value = this.value.slice(0, this.cursor) + this.value.slice(this.cursor + graphemeLength);
+		}
+	}
+
+	private deleteToLineStart(): void {
+		if (this.cursor === 0) return;
+		this.pushUndo();
+		const deletedText = this.value.slice(0, this.cursor);
+		this.killRing.push(deletedText, { prepend: true, accumulate: this.lastAction === "kill" });
+		this.lastAction = "kill";
+		this.value = this.value.slice(this.cursor);
+		this.cursor = 0;
+	}
+
+	private deleteToLineEnd(): void {
+		if (this.cursor >= this.value.length) return;
+		this.pushUndo();
+		const deletedText = this.value.slice(this.cursor);
+		this.killRing.push(deletedText, { prepend: false, accumulate: this.lastAction === "kill" });
+		this.lastAction = "kill";
+		this.value = this.value.slice(0, this.cursor);
+	}
+
+	private deleteWordBackwards(): void {
+		if (this.cursor === 0) return;
+
+		// Save lastAction before cursor movement (moveWordBackwards resets it)
+		const wasKill = this.lastAction === "kill";
+
+		this.pushUndo();
+
+		const oldCursor = this.cursor;
+		this.moveWordBackwards();
+		const deleteFrom = this.cursor;
+		this.cursor = oldCursor;
+
+		const deletedText = this.value.slice(deleteFrom, this.cursor);
+		this.killRing.push(deletedText, { prepend: true, accumulate: wasKill });
+		this.lastAction = "kill";
+
+		this.value = this.value.slice(0, deleteFrom) + this.value.slice(this.cursor);
+		this.cursor = deleteFrom;
+	}
+
+	private deleteWordForward(): void {
+		if (this.cursor >= this.value.length) return;
+
+		// Save lastAction before cursor movement (moveWordForwards resets it)
+		const wasKill = this.lastAction === "kill";
+
+		this.pushUndo();
+
+		const oldCursor = this.cursor;
+		this.moveWordForwards();
+		const deleteTo = this.cursor;
+		this.cursor = oldCursor;
+
+		const deletedText = this.value.slice(this.cursor, deleteTo);
+		this.killRing.push(deletedText, { prepend: false, accumulate: wasKill });
+		this.lastAction = "kill";
+
+		this.value = this.value.slice(0, this.cursor) + this.value.slice(deleteTo);
+	}
+
+	private yank(): void {
+		const text = this.killRing.peek();
+		if (!text) return;
+
+		this.pushUndo();
+
+		this.value = this.value.slice(0, this.cursor) + text + this.value.slice(this.cursor);
+		this.cursor += text.length;
+		this.lastAction = "yank";
+	}
+
+	private yankPop(): void {
+		if (this.lastAction !== "yank" || this.killRing.length <= 1) return;
+
+		this.pushUndo();
+
+		// Delete the previously yanked text (still at end of ring before rotation)
+		const prevText = this.killRing.peek() || "";
+		this.value = this.value.slice(0, this.cursor - prevText.length) + this.value.slice(this.cursor);
+		this.cursor -= prevText.length;
+
+		// Rotate and insert new entry
+		this.killRing.rotate();
+		const text = this.killRing.peek() || "";
+		this.value = this.value.slice(0, this.cursor) + text + this.value.slice(this.cursor);
+		this.cursor += text.length;
+		this.lastAction = "yank";
+	}
+
+	private pushUndo(): void {
+		this.undoStack.push({ value: this.value, cursor: this.cursor });
+	}
+
+	private undo(): void {
+		const snapshot = this.undoStack.pop();
+		if (!snapshot) return;
+		this.value = snapshot.value;
+		this.cursor = snapshot.cursor;
+		this.lastAction = null;
+	}
+
+	private moveWordBackwards(): void {
+		if (this.cursor === 0) {
+			return;
+		}
+
+		this.lastAction = null;
+		const textBeforeCursor = this.value.slice(0, this.cursor);
+		const graphemes = [...segmenter.segment(textBeforeCursor)];
+
+		// Skip trailing whitespace
+		while (graphemes.length > 0 && isWhitespaceChar(graphemes[graphemes.length - 1]?.segment || "")) {
+			this.cursor -= graphemes.pop()?.segment.length || 0;
+		}
+
+		if (graphemes.length > 0) {
+			const lastGrapheme = graphemes[graphemes.length - 1]?.segment || "";
+			if (isPunctuationChar(lastGrapheme)) {
+				// Skip punctuation run
+				while (graphemes.length > 0 && isPunctuationChar(graphemes[graphemes.length - 1]?.segment || "")) {
+					this.cursor -= graphemes.pop()?.segment.length || 0;
+				}
+			} else {
+				// Skip word run
+				while (
+					graphemes.length > 0 &&
+					!isWhitespaceChar(graphemes[graphemes.length - 1]?.segment || "") &&
+					!isPunctuationChar(graphemes[graphemes.length - 1]?.segment || "")
+				) {
+					this.cursor -= graphemes.pop()?.segment.length || 0;
+				}
+			}
+		}
+	}
+
+	private moveWordForwards(): void {
+		if (this.cursor >= this.value.length) {
+			return;
+		}
+
+		this.lastAction = null;
+		const textAfterCursor = this.value.slice(this.cursor);
+		const segments = segmenter.segment(textAfterCursor);
+		const iterator = segments[Symbol.iterator]();
+		let next = iterator.next();
+
+		// Skip leading whitespace
+		while (!next.done && isWhitespaceChar(next.value.segment)) {
+			this.cursor += next.value.segment.length;
+			next = iterator.next();
+		}
+
+		if (!next.done) {
+			const firstGrapheme = next.value.segment;
+			if (isPunctuationChar(firstGrapheme)) {
+				// Skip punctuation run
+				while (!next.done && isPunctuationChar(next.value.segment)) {
+					this.cursor += next.value.segment.length;
+					next = iterator.next();
+				}
+			} else {
+				// Skip word run
+				while (!next.done && !isWhitespaceChar(next.value.segment) && !isPunctuationChar(next.value.segment)) {
+					this.cursor += next.value.segment.length;
+					next = iterator.next();
+				}
+			}
+		}
+	}
+
+	private handlePaste(pastedText: string): void {
+		this.lastAction = null;
+		this.pushUndo();
+
+		// Clean the pasted text - remove newlines and carriage returns
+		const cleanText = pastedText.replace(/\r\n/g, "").replace(/\r/g, "").replace(/\n/g, "").replace(/\t/g, "    ");
+
+		// Insert at cursor position
+		this.value = this.value.slice(0, this.cursor) + cleanText + this.value.slice(this.cursor);
+		this.cursor += cleanText.length;
+	}
+
+	invalidate(): void {
+		// No cached state to invalidate currently
+	}
+
+	render(width: number): string[] {
+		// Calculate visible window
+		const prompt = "> ";
+		const availableWidth = width - prompt.length;
+
+		if (availableWidth <= 0) {
+			return [prompt];
+		}
+
+		let visibleText = "";
+		let cursorDisplay = this.cursor;
+		const totalWidth = visibleWidth(this.value);
+
+		if (totalWidth < availableWidth) {
+			// Everything fits (leave room for cursor at end)
+			visibleText = this.value;
+		} else {
+			// Need horizontal scrolling
+			// Reserve one column for cursor if it's at the end
+			const scrollWidth = this.cursor === this.value.length ? availableWidth - 1 : availableWidth;
+			const cursorCol = visibleWidth(this.value.slice(0, this.cursor));
+
+			if (scrollWidth > 0) {
+				const halfWidth = Math.floor(scrollWidth / 2);
+				let startCol = 0;
+
+				if (cursorCol < halfWidth) {
+					// Cursor near start
+					startCol = 0;
+				} else if (cursorCol > totalWidth - halfWidth) {
+					// Cursor near end
+					startCol = Math.max(0, totalWidth - scrollWidth);
+				} else {
+					// Cursor in middle
+					startCol = Math.max(0, cursorCol - halfWidth);
+				}
+
+				visibleText = sliceByColumn(this.value, startCol, scrollWidth, true);
+				const beforeCursor = sliceByColumn(this.value, startCol, Math.max(0, cursorCol - startCol), true);
+				cursorDisplay = beforeCursor.length;
+			} else {
+				visibleText = "";
+				cursorDisplay = 0;
+			}
+		}
+
+		// Build line with fake cursor
+		// Insert cursor character at cursor position
+		const graphemes = [...segmenter.segment(visibleText.slice(cursorDisplay))];
+		const cursorGrapheme = graphemes[0];
+
+		const beforeCursor = visibleText.slice(0, cursorDisplay);
+		const atCursor = cursorGrapheme?.segment ?? " "; // Character at cursor, or space if at end
+		const afterCursor = visibleText.slice(cursorDisplay + atCursor.length);
+
+		// Hardware cursor marker (zero-width, emitted before fake cursor for IME positioning)
+		const marker = this.focused ? CURSOR_MARKER : "";
+
+		// Use inverse video to show cursor
+		const cursorChar = `\x1b[7m${atCursor}\x1b[27m`; // ESC[7m = reverse video, ESC[27m = normal
+		const textWithCursor = beforeCursor + marker + cursorChar + afterCursor;
+
+		// Calculate visual width
+		const visualLength = visibleWidth(textWithCursor);
+		const padding = " ".repeat(Math.max(0, availableWidth - visualLength));
+		const line = prompt + textWithCursor + padding;
+
+		return [line];
+	}
+}

pi-mono-reference/packages/tui/src/components/loader.ts

@@ -0,0 +1,55 @@
+import type { TUI } from "../tui.js";
+import { Text } from "./text.js";
+
+/**
+ * Loader component that updates every 80ms with spinning animation
+ */
+export class Loader extends Text {
+	private frames = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"];
+	private currentFrame = 0;
+	private intervalId: NodeJS.Timeout | null = null;
+	private ui: TUI | null = null;
+
+	constructor(
+		ui: TUI,
+		private spinnerColorFn: (str: string) => string,
+		private messageColorFn: (str: string) => string,
+		private message: string = "Loading...",
+	) {
+		super("", 1, 0);
+		this.ui = ui;
+		this.start();
+	}
+
+	render(width: number): string[] {
+		return ["", ...super.render(width)];
+	}
+
+	start() {
+		this.updateDisplay();
+		this.intervalId = setInterval(() => {
+			this.currentFrame = (this.currentFrame + 1) % this.frames.length;
+			this.updateDisplay();
+		}, 80);
+	}
+
+	stop() {
+		if (this.intervalId) {
+			clearInterval(this.intervalId);
+			this.intervalId = null;
+		}
+	}
+
+	setMessage(message: string) {
+		this.message = message;
+		this.updateDisplay();
+	}
+
+	private updateDisplay() {
+		const frame = this.frames[this.currentFrame];
+		this.setText(`${this.spinnerColorFn(frame)} ${this.messageColorFn(this.message)}`);
+		if (this.ui) {
+			this.ui.requestRender();
+		}
+	}
+}

pi-mono-reference/packages/tui/src/components/markdown.ts

@@ -0,0 +1,852 @@
+import { Marked, type Token, Tokenizer, type Tokens } from "marked";
+import { getCapabilities, hyperlink, isImageLine } from "../terminal-image.js";
+import type { Component } from "../tui.js";
+import { applyBackgroundToLine, visibleWidth, wrapTextWithAnsi } from "../utils.js";
+
+const STRICT_STRIKETHROUGH_REGEX = /^(~~)(?=[^\s~])((?:\\.|[^\\])*?(?:\\.|[^\s~\\]))\1(?=[^~]|$)/;
+
+class StrictStrikethroughTokenizer extends Tokenizer {
+	override del(src: string): Tokens.Del | undefined {
+		const match = STRICT_STRIKETHROUGH_REGEX.exec(src);
+		if (!match) {
+			return undefined;
+		}
+
+		const text = match[2];
+		return {
+			type: "del",
+			raw: match[0],
+			text,
+			tokens: this.lexer.inlineTokens(text),
+		};
+	}
+}
+
+const markdownParser = new Marked();
+markdownParser.setOptions({
+	tokenizer: new StrictStrikethroughTokenizer(),
+});
+
+/**
+ * Default text styling for markdown content.
+ * Applied to all text unless overridden by markdown formatting.
+ */
+export interface DefaultTextStyle {
+	/** Foreground color function */
+	color?: (text: string) => string;
+	/** Background color function */
+	bgColor?: (text: string) => string;
+	/** Bold text */
+	bold?: boolean;
+	/** Italic text */
+	italic?: boolean;
+	/** Strikethrough text */
+	strikethrough?: boolean;
+	/** Underline text */
+	underline?: boolean;
+}
+
+/**
+ * Theme functions for markdown elements.
+ * Each function takes text and returns styled text with ANSI codes.
+ */
+export interface MarkdownTheme {
+	heading: (text: string) => string;
+	link: (text: string) => string;
+	linkUrl: (text: string) => string;
+	code: (text: string) => string;
+	codeBlock: (text: string) => string;
+	codeBlockBorder: (text: string) => string;
+	quote: (text: string) => string;
+	quoteBorder: (text: string) => string;
+	hr: (text: string) => string;
+	listBullet: (text: string) => string;
+	bold: (text: string) => string;
+	italic: (text: string) => string;
+	strikethrough: (text: string) => string;
+	underline: (text: string) => string;
+	highlightCode?: (code: string, lang?: string) => string[];
+	/** Prefix applied to each rendered code block line (default: "  ") */
+	codeBlockIndent?: string;
+}
+
+interface InlineStyleContext {
+	applyText: (text: string) => string;
+	stylePrefix: string;
+}
+
+export class Markdown implements Component {
+	private text: string;
+	private paddingX: number; // Left/right padding
+	private paddingY: number; // Top/bottom padding
+	private defaultTextStyle?: DefaultTextStyle;
+	private theme: MarkdownTheme;
+	private defaultStylePrefix?: string;
+
+	// Cache for rendered output
+	private cachedText?: string;
+	private cachedWidth?: number;
+	private cachedLines?: string[];
+
+	constructor(
+		text: string,
+		paddingX: number,
+		paddingY: number,
+		theme: MarkdownTheme,
+		defaultTextStyle?: DefaultTextStyle,
+	) {
+		this.text = text;
+		this.paddingX = paddingX;
+		this.paddingY = paddingY;
+		this.theme = theme;
+		this.defaultTextStyle = defaultTextStyle;
+	}
+
+	setText(text: string): void {
+		this.text = text;
+		this.invalidate();
+	}
+
+	invalidate(): void {
+		this.cachedText = undefined;
+		this.cachedWidth = undefined;
+		this.cachedLines = undefined;
+	}
+
+	render(width: number): string[] {
+		// Check cache
+		if (this.cachedLines && this.cachedText === this.text && this.cachedWidth === width) {
+			return this.cachedLines;
+		}
+
+		// Calculate available width for content (subtract horizontal padding)
+		const contentWidth = Math.max(1, width - this.paddingX * 2);
+
+		// Don't render anything if there's no actual text
+		if (!this.text || this.text.trim() === "") {
+			const result: string[] = [];
+			// Update cache
+			this.cachedText = this.text;
+			this.cachedWidth = width;
+			this.cachedLines = result;
+			return result;
+		}
+
+		// Replace tabs with 3 spaces for consistent rendering
+		const normalizedText = this.text.replace(/\t/g, "   ");
+
+		// Parse markdown to HTML-like tokens
+		const tokens = markdownParser.lexer(normalizedText);
+
+		// Convert tokens to styled terminal output
+		const renderedLines: string[] = [];
+
+		for (let i = 0; i < tokens.length; i++) {
+			const token = tokens[i];
+			const nextToken = tokens[i + 1];
+			const tokenLines = this.renderToken(token, contentWidth, nextToken?.type);
+			renderedLines.push(...tokenLines);
+		}
+
+		// Wrap lines (NO padding, NO background yet)
+		const wrappedLines: string[] = [];
+		for (const line of renderedLines) {
+			if (isImageLine(line)) {
+				wrappedLines.push(line);
+			} else {
+				wrappedLines.push(...wrapTextWithAnsi(line, contentWidth));
+			}
+		}
+
+		// Add margins and background to each wrapped line
+		const leftMargin = " ".repeat(this.paddingX);
+		const rightMargin = " ".repeat(this.paddingX);
+		const bgFn = this.defaultTextStyle?.bgColor;
+		const contentLines: string[] = [];
+
+		for (const line of wrappedLines) {
+			if (isImageLine(line)) {
+				contentLines.push(line);
+				continue;
+			}
+
+			const lineWithMargins = leftMargin + line + rightMargin;
+
+			if (bgFn) {
+				contentLines.push(applyBackgroundToLine(lineWithMargins, width, bgFn));
+			} else {
+				// No background - just pad to width
+				const visibleLen = visibleWidth(lineWithMargins);
+				const paddingNeeded = Math.max(0, width - visibleLen);
+				contentLines.push(lineWithMargins + " ".repeat(paddingNeeded));
+			}
+		}
+
+		// Add top/bottom padding (empty lines)
+		const emptyLine = " ".repeat(width);
+		const emptyLines: string[] = [];
+		for (let i = 0; i < this.paddingY; i++) {
+			const line = bgFn ? applyBackgroundToLine(emptyLine, width, bgFn) : emptyLine;
+			emptyLines.push(line);
+		}
+
+		// Combine top padding, content, and bottom padding
+		const result = [...emptyLines, ...contentLines, ...emptyLines];
+
+		// Update cache
+		this.cachedText = this.text;
+		this.cachedWidth = width;
+		this.cachedLines = result;
+
+		return result.length > 0 ? result : [""];
+	}
+
+	/**
+	 * Apply default text style to a string.
+	 * This is the base styling applied to all text content.
+	 * NOTE: Background color is NOT applied here - it's applied at the padding stage
+	 * to ensure it extends to the full line width.
+	 */
+	private applyDefaultStyle(text: string): string {
+		if (!this.defaultTextStyle) {
+			return text;
+		}
+
+		let styled = text;
+
+		// Apply foreground color (NOT background - that's applied at padding stage)
+		if (this.defaultTextStyle.color) {
+			styled = this.defaultTextStyle.color(styled);
+		}
+
+		// Apply text decorations using this.theme
+		if (this.defaultTextStyle.bold) {
+			styled = this.theme.bold(styled);
+		}
+		if (this.defaultTextStyle.italic) {
+			styled = this.theme.italic(styled);
+		}
+		if (this.defaultTextStyle.strikethrough) {
+			styled = this.theme.strikethrough(styled);
+		}
+		if (this.defaultTextStyle.underline) {
+			styled = this.theme.underline(styled);
+		}
+
+		return styled;
+	}
+
+	private getDefaultStylePrefix(): string {
+		if (!this.defaultTextStyle) {
+			return "";
+		}
+
+		if (this.defaultStylePrefix !== undefined) {
+			return this.defaultStylePrefix;
+		}
+
+		const sentinel = "\u0000";
+		let styled = sentinel;
+
+		if (this.defaultTextStyle.color) {
+			styled = this.defaultTextStyle.color(styled);
+		}
+
+		if (this.defaultTextStyle.bold) {
+			styled = this.theme.bold(styled);
+		}
+		if (this.defaultTextStyle.italic) {
+			styled = this.theme.italic(styled);
+		}
+		if (this.defaultTextStyle.strikethrough) {
+			styled = this.theme.strikethrough(styled);
+		}
+		if (this.defaultTextStyle.underline) {
+			styled = this.theme.underline(styled);
+		}
+
+		const sentinelIndex = styled.indexOf(sentinel);
+		this.defaultStylePrefix = sentinelIndex >= 0 ? styled.slice(0, sentinelIndex) : "";
+		return this.defaultStylePrefix;
+	}
+
+	private getStylePrefix(styleFn: (text: string) => string): string {
+		const sentinel = "\u0000";
+		const styled = styleFn(sentinel);
+		const sentinelIndex = styled.indexOf(sentinel);
+		return sentinelIndex >= 0 ? styled.slice(0, sentinelIndex) : "";
+	}
+
+	private getDefaultInlineStyleContext(): InlineStyleContext {
+		return {
+			applyText: (text: string) => this.applyDefaultStyle(text),
+			stylePrefix: this.getDefaultStylePrefix(),
+		};
+	}
+
+	private renderToken(
+		token: Token,
+		width: number,
+		nextTokenType?: string,
+		styleContext?: InlineStyleContext,
+	): string[] {
+		const lines: string[] = [];
+
+		switch (token.type) {
+			case "heading": {
+				const headingLevel = token.depth;
+				const headingPrefix = `${"#".repeat(headingLevel)} `;
+
+				// Build a heading-specific style context so inline tokens (codespan, bold, etc.)
+				// restore heading styling after their own ANSI resets instead of falling back to
+				// the default text style.
+				let headingStyleFn: (text: string) => string;
+				if (headingLevel === 1) {
+					headingStyleFn = (text: string) => this.theme.heading(this.theme.bold(this.theme.underline(text)));
+				} else {
+					headingStyleFn = (text: string) => this.theme.heading(this.theme.bold(text));
+				}
+
+				const headingStyleContext: InlineStyleContext = {
+					applyText: headingStyleFn,
+					stylePrefix: this.getStylePrefix(headingStyleFn),
+				};
+
+				const headingText = this.renderInlineTokens(token.tokens || [], headingStyleContext);
+				const styledHeading = headingLevel >= 3 ? headingStyleFn(headingPrefix) + headingText : headingText;
+				lines.push(styledHeading);
+				if (nextTokenType && nextTokenType !== "space") {
+					lines.push(""); // Add spacing after headings (unless space token follows)
+				}
+				break;
+			}
+
+			case "paragraph": {
+				const paragraphText = this.renderInlineTokens(token.tokens || [], styleContext);
+				lines.push(paragraphText);
+				// Don't add spacing if next token is space or list
+				if (nextTokenType && nextTokenType !== "list" && nextTokenType !== "space") {
+					lines.push("");
+				}
+				break;
+			}
+
+			case "code": {
+				const indent = this.theme.codeBlockIndent ?? "  ";
+				lines.push(this.theme.codeBlockBorder(`\`\`\`${token.lang || ""}`));
+				if (this.theme.highlightCode) {
+					const highlightedLines = this.theme.highlightCode(token.text, token.lang);
+					for (const hlLine of highlightedLines) {
+						lines.push(`${indent}${hlLine}`);
+					}
+				} else {
+					// Split code by newlines and style each line
+					const codeLines = token.text.split("\n");
+					for (const codeLine of codeLines) {
+						lines.push(`${indent}${this.theme.codeBlock(codeLine)}`);
+					}
+				}
+				lines.push(this.theme.codeBlockBorder("```"));
+				if (nextTokenType && nextTokenType !== "space") {
+					lines.push(""); // Add spacing after code blocks (unless space token follows)
+				}
+				break;
+			}
+
+			case "list": {
+				const listLines = this.renderList(token as any, 0, styleContext);
+				lines.push(...listLines);
+				// Don't add spacing after lists if a space token follows
+				// (the space token will handle it)
+				break;
+			}
+
+			case "table": {
+				const tableLines = this.renderTable(token as any, width, nextTokenType, styleContext);
+				lines.push(...tableLines);
+				break;
+			}
+
+			case "blockquote": {
+				const quoteStyle = (text: string) => this.theme.quote(this.theme.italic(text));
+				const quoteStylePrefix = this.getStylePrefix(quoteStyle);
+				const applyQuoteStyle = (line: string): string => {
+					if (!quoteStylePrefix) {
+						return quoteStyle(line);
+					}
+					const lineWithReappliedStyle = line.replace(/\x1b\[0m/g, `\x1b[0m${quoteStylePrefix}`);
+					return quoteStyle(lineWithReappliedStyle);
+				};
+
+				// Calculate available width for quote content (subtract border "│ " = 2 chars)
+				const quoteContentWidth = Math.max(1, width - 2);
+
+				// Blockquotes contain block-level tokens (paragraph, list, code, etc.), so render
+				// children with renderToken() instead of renderInlineTokens().
+				// Default message style should not apply inside blockquotes.
+				const quoteInlineStyleContext: InlineStyleContext = {
+					applyText: (text: string) => text,
+					stylePrefix: quoteStylePrefix,
+				};
+				const quoteTokens = token.tokens || [];
+				const renderedQuoteLines: string[] = [];
+				for (let i = 0; i < quoteTokens.length; i++) {
+					const quoteToken = quoteTokens[i];
+					const nextQuoteToken = quoteTokens[i + 1];
+					renderedQuoteLines.push(
+						...this.renderToken(quoteToken, quoteContentWidth, nextQuoteToken?.type, quoteInlineStyleContext),
+					);
+				}
+
+				// Avoid rendering an extra empty quote line before the outer blockquote spacing.
+				while (renderedQuoteLines.length > 0 && renderedQuoteLines[renderedQuoteLines.length - 1] === "") {
+					renderedQuoteLines.pop();
+				}
+
+				for (const quoteLine of renderedQuoteLines) {
+					const styledLine = applyQuoteStyle(quoteLine);
+					const wrappedLines = wrapTextWithAnsi(styledLine, quoteContentWidth);
+					for (const wrappedLine of wrappedLines) {
+						lines.push(this.theme.quoteBorder("│ ") + wrappedLine);
+					}
+				}
+				if (nextTokenType && nextTokenType !== "space") {
+					lines.push(""); // Add spacing after blockquotes (unless space token follows)
+				}
+				break;
+			}
+
+			case "hr":
+				lines.push(this.theme.hr("─".repeat(Math.min(width, 80))));
+				if (nextTokenType && nextTokenType !== "space") {
+					lines.push(""); // Add spacing after horizontal rules (unless space token follows)
+				}
+				break;
+
+			case "html":
+				// Render HTML as plain text (escaped for terminal)
+				if ("raw" in token && typeof token.raw === "string") {
+					lines.push(this.applyDefaultStyle(token.raw.trim()));
+				}
+				break;
+
+			case "space":
+				// Space tokens represent blank lines in markdown
+				lines.push("");
+				break;
+
+			default:
+				// Handle any other token types as plain text
+				if ("text" in token && typeof token.text === "string") {
+					lines.push(token.text);
+				}
+		}
+
+		return lines;
+	}
+
+	private renderInlineTokens(tokens: Token[], styleContext?: InlineStyleContext): string {
+		let result = "";
+		const resolvedStyleContext = styleContext ?? this.getDefaultInlineStyleContext();
+		const { applyText, stylePrefix } = resolvedStyleContext;
+		const applyTextWithNewlines = (text: string): string => {
+			const segments: string[] = text.split("\n");
+			return segments.map((segment: string) => applyText(segment)).join("\n");
+		};
+
+		for (const token of tokens) {
+			switch (token.type) {
+				case "text":
+					// Text tokens in list items can have nested tokens for inline formatting
+					if (token.tokens && token.tokens.length > 0) {
+						result += this.renderInlineTokens(token.tokens, resolvedStyleContext);
+					} else {
+						result += applyTextWithNewlines(token.text);
+					}
+					break;
+
+				case "paragraph":
+					// Paragraph tokens contain nested inline tokens
+					result += this.renderInlineTokens(token.tokens || [], resolvedStyleContext);
+					break;
+
+				case "strong": {
+					const boldContent = this.renderInlineTokens(token.tokens || [], resolvedStyleContext);
+					result += this.theme.bold(boldContent) + stylePrefix;
+					break;
+				}
+
+				case "em": {
+					const italicContent = this.renderInlineTokens(token.tokens || [], resolvedStyleContext);
+					result += this.theme.italic(italicContent) + stylePrefix;
+					break;
+				}
+
+				case "codespan":
+					result += this.theme.code(token.text) + stylePrefix;
+					break;
+
+				case "link": {
+					const linkText = this.renderInlineTokens(token.tokens || [], resolvedStyleContext);
+					const styledLink = this.theme.link(this.theme.underline(linkText));
+					if (getCapabilities().hyperlinks) {
+						// OSC 8: render as a clickable hyperlink. The URL is not printed inline,
+						// so we always show only the link text regardless of whether it matches href.
+						result += hyperlink(styledLink, token.href) + stylePrefix;
+					} else {
+						// Fallback: print URL in parentheses when text differs from href.
+						// Compare raw token.text (not styled) against href for the equality check.
+						// For mailto: links strip the prefix (autolinked emails use text="foo@bar.com"
+						// but href="mailto:foo@bar.com").
+						const hrefForComparison = token.href.startsWith("mailto:") ? token.href.slice(7) : token.href;
+						if (token.text === token.href || token.text === hrefForComparison) {
+							result += styledLink + stylePrefix;
+						} else {
+							result += styledLink + this.theme.linkUrl(` (${token.href})`) + stylePrefix;
+						}
+					}
+					break;
+				}
+
+				case "br":
+					result += "\n";
+					break;
+
+				case "del": {
+					const delContent = this.renderInlineTokens(token.tokens || [], resolvedStyleContext);
+					result += this.theme.strikethrough(delContent) + stylePrefix;
+					break;
+				}
+
+				case "html":
+					// Render inline HTML as plain text
+					if ("raw" in token && typeof token.raw === "string") {
+						result += applyTextWithNewlines(token.raw);
+					}
+					break;
+
+				default:
+					// Handle any other inline token types as plain text
+					if ("text" in token && typeof token.text === "string") {
+						result += applyTextWithNewlines(token.text);
+					}
+			}
+		}
+
+		while (stylePrefix && result.endsWith(stylePrefix)) {
+			result = result.slice(0, -stylePrefix.length);
+		}
+
+		return result;
+	}
+
+	/**
+	 * Render a list with proper nesting support
+	 */
+	private renderList(
+		token: Token & { items: any[]; ordered: boolean; start?: number },
+		depth: number,
+		styleContext?: InlineStyleContext,
+	): string[] {
+		const lines: string[] = [];
+		const indent = "  ".repeat(depth);
+		// Use the list's start property (defaults to 1 for ordered lists)
+		const startNumber = token.start ?? 1;
+
+		for (let i = 0; i < token.items.length; i++) {
+			const item = token.items[i];
+			const bullet = token.ordered ? `${startNumber + i}. ` : "- ";
+
+			// Process item tokens to handle nested lists
+			const itemLines = this.renderListItem(item.tokens || [], depth, styleContext);
+
+			if (itemLines.length > 0) {
+				// First line - check if it's a nested list
+				// A nested list will start with indent (spaces) followed by cyan bullet
+				const firstLine = itemLines[0];
+				const isNestedList = /^\s+\x1b\[36m[-\d]/.test(firstLine); // starts with spaces + cyan + bullet char
+
+				if (isNestedList) {
+					// This is a nested list, just add it as-is (already has full indent)
+					lines.push(firstLine);
+				} else {
+					// Regular text content - add indent and bullet
+					lines.push(indent + this.theme.listBullet(bullet) + firstLine);
+				}
+
+				// Rest of the lines
+				for (let j = 1; j < itemLines.length; j++) {
+					const line = itemLines[j];
+					const isNestedListLine = /^\s+\x1b\[36m[-\d]/.test(line); // starts with spaces + cyan + bullet char
+
+					if (isNestedListLine) {
+						// Nested list line - already has full indent
+						lines.push(line);
+					} else {
+						// Regular content - add parent indent + 2 spaces for continuation
+						lines.push(`${indent}  ${line}`);
+					}
+				}
+			} else {
+				lines.push(indent + this.theme.listBullet(bullet));
+			}
+		}
+
+		return lines;
+	}
+
+	/**
+	 * Render list item tokens, handling nested lists
+	 * Returns lines WITHOUT the parent indent (renderList will add it)
+	 */
+	private renderListItem(tokens: Token[], parentDepth: number, styleContext?: InlineStyleContext): string[] {
+		const lines: string[] = [];
+
+		for (const token of tokens) {
+			if (token.type === "list") {
+				// Nested list - render with one additional indent level
+				// These lines will have their own indent, so we just add them as-is
+				const nestedLines = this.renderList(token as any, parentDepth + 1, styleContext);
+				lines.push(...nestedLines);
+			} else if (token.type === "text") {
+				// Text content (may have inline tokens)
+				const text =
+					token.tokens && token.tokens.length > 0
+						? this.renderInlineTokens(token.tokens, styleContext)
+						: token.text || "";
+				lines.push(text);
+			} else if (token.type === "paragraph") {
+				// Paragraph in list item
+				const text = this.renderInlineTokens(token.tokens || [], styleContext);
+				lines.push(text);
+			} else if (token.type === "code") {
+				// Code block in list item
+				const indent = this.theme.codeBlockIndent ?? "  ";
+				lines.push(this.theme.codeBlockBorder(`\`\`\`${token.lang || ""}`));
+				if (this.theme.highlightCode) {
+					const highlightedLines = this.theme.highlightCode(token.text, token.lang);
+					for (const hlLine of highlightedLines) {
+						lines.push(`${indent}${hlLine}`);
+					}
+				} else {
+					const codeLines = token.text.split("\n");
+					for (const codeLine of codeLines) {
+						lines.push(`${indent}${this.theme.codeBlock(codeLine)}`);
+					}
+				}
+				lines.push(this.theme.codeBlockBorder("```"));
+			} else {
+				// Other token types - try to render as inline
+				const text = this.renderInlineTokens([token], styleContext);
+				if (text) {
+					lines.push(text);
+				}
+			}
+		}
+
+		return lines;
+	}
+
+	/**
+	 * Get the visible width of the longest word in a string.
+	 */
+	private getLongestWordWidth(text: string, maxWidth?: number): number {
+		const words = text.split(/\s+/).filter((word) => word.length > 0);
+		let longest = 0;
+		for (const word of words) {
+			longest = Math.max(longest, visibleWidth(word));
+		}
+		if (maxWidth === undefined) {
+			return longest;
+		}
+		return Math.min(longest, maxWidth);
+	}
+
+	/**
+	 * Wrap a table cell to fit into a column.
+	 *
+	 * Delegates to wrapTextWithAnsi() so ANSI codes + long tokens are handled
+	 * consistently with the rest of the renderer.
+	 */
+	private wrapCellText(text: string, maxWidth: number): string[] {
+		return wrapTextWithAnsi(text, Math.max(1, maxWidth));
+	}
+
+	/**
+	 * Render a table with width-aware cell wrapping.
+	 * Cells that don't fit are wrapped to multiple lines.
+	 */
+	private renderTable(
+		token: Token & { header: any[]; rows: any[][]; raw?: string },
+		availableWidth: number,
+		nextTokenType?: string,
+		styleContext?: InlineStyleContext,
+	): string[] {
+		const lines: string[] = [];
+		const numCols = token.header.length;
+
+		if (numCols === 0) {
+			return lines;
+		}
+
+		// Calculate border overhead: "│ " + (n-1) * " │ " + " │"
+		// = 2 + (n-1) * 3 + 2 = 3n + 1
+		const borderOverhead = 3 * numCols + 1;
+		const availableForCells = availableWidth - borderOverhead;
+		if (availableForCells < numCols) {
+			// Too narrow to render a stable table. Fall back to raw markdown.
+			const fallbackLines = token.raw ? wrapTextWithAnsi(token.raw, availableWidth) : [];
+			if (nextTokenType && nextTokenType !== "space") {
+				fallbackLines.push("");
+			}
+			return fallbackLines;
+		}
+
+		const maxUnbrokenWordWidth = 30;
+
+		// Calculate natural column widths (what each column needs without constraints)
+		const naturalWidths: number[] = [];
+		const minWordWidths: number[] = [];
+		for (let i = 0; i < numCols; i++) {
+			const headerText = this.renderInlineTokens(token.header[i].tokens || [], styleContext);
+			naturalWidths[i] = visibleWidth(headerText);
+			minWordWidths[i] = Math.max(1, this.getLongestWordWidth(headerText, maxUnbrokenWordWidth));
+		}
+		for (const row of token.rows) {
+			for (let i = 0; i < row.length; i++) {
+				const cellText = this.renderInlineTokens(row[i].tokens || [], styleContext);
+				naturalWidths[i] = Math.max(naturalWidths[i] || 0, visibleWidth(cellText));
+				minWordWidths[i] = Math.max(
+					minWordWidths[i] || 1,
+					this.getLongestWordWidth(cellText, maxUnbrokenWordWidth),
+				);
+			}
+		}
+
+		let minColumnWidths = minWordWidths;
+		let minCellsWidth = minColumnWidths.reduce((a, b) => a + b, 0);
+
+		if (minCellsWidth > availableForCells) {
+			minColumnWidths = new Array(numCols).fill(1);
+			const remaining = availableForCells - numCols;
+
+			if (remaining > 0) {
+				const totalWeight = minWordWidths.reduce((total, width) => total + Math.max(0, width - 1), 0);
+				const growth = minWordWidths.map((width) => {
+					const weight = Math.max(0, width - 1);
+					return totalWeight > 0 ? Math.floor((weight / totalWeight) * remaining) : 0;
+				});
+
+				for (let i = 0; i < numCols; i++) {
+					minColumnWidths[i] += growth[i] ?? 0;
+				}
+
+				const allocated = growth.reduce((total, width) => total + width, 0);
+				let leftover = remaining - allocated;
+				for (let i = 0; leftover > 0 && i < numCols; i++) {
+					minColumnWidths[i]++;
+					leftover--;
+				}
+			}
+
+			minCellsWidth = minColumnWidths.reduce((a, b) => a + b, 0);
+		}
+
+		// Calculate column widths that fit within available width
+		const totalNaturalWidth = naturalWidths.reduce((a, b) => a + b, 0) + borderOverhead;
+		let columnWidths: number[];
+
+		if (totalNaturalWidth <= availableWidth) {
+			// Everything fits naturally
+			columnWidths = naturalWidths.map((width, index) => Math.max(width, minColumnWidths[index]));
+		} else {
+			// Need to shrink columns to fit
+			const totalGrowPotential = naturalWidths.reduce((total, width, index) => {
+				return total + Math.max(0, width - minColumnWidths[index]);
+			}, 0);
+			const extraWidth = Math.max(0, availableForCells - minCellsWidth);
+			columnWidths = minColumnWidths.map((minWidth, index) => {
+				const naturalWidth = naturalWidths[index];
+				const minWidthDelta = Math.max(0, naturalWidth - minWidth);
+				let grow = 0;
+				if (totalGrowPotential > 0) {
+					grow = Math.floor((minWidthDelta / totalGrowPotential) * extraWidth);
+				}
+				return minWidth + grow;
+			});
+
+			// Adjust for rounding errors - distribute remaining space
+			const allocated = columnWidths.reduce((a, b) => a + b, 0);
+			let remaining = availableForCells - allocated;
+			while (remaining > 0) {
+				let grew = false;
+				for (let i = 0; i < numCols && remaining > 0; i++) {
+					if (columnWidths[i] < naturalWidths[i]) {
+						columnWidths[i]++;
+						remaining--;
+						grew = true;
+					}
+				}
+				if (!grew) {
+					break;
+				}
+			}
+		}
+
+		// Render top border
+		const topBorderCells = columnWidths.map((w) => "─".repeat(w));
+		lines.push(`┌─${topBorderCells.join("─┬─")}─┐`);
+
+		// Render header with wrapping
+		const headerCellLines: string[][] = token.header.map((cell, i) => {
+			const text = this.renderInlineTokens(cell.tokens || [], styleContext);
+			return this.wrapCellText(text, columnWidths[i]);
+		});
+		const headerLineCount = Math.max(...headerCellLines.map((c) => c.length));
+
+		for (let lineIdx = 0; lineIdx < headerLineCount; lineIdx++) {
+			const rowParts = headerCellLines.map((cellLines, colIdx) => {
+				const text = cellLines[lineIdx] || "";
+				const padded = text + " ".repeat(Math.max(0, columnWidths[colIdx] - visibleWidth(text)));
+				return this.theme.bold(padded);
+			});
+			lines.push(`│ ${rowParts.join(" │ ")} │`);
+		}
+
+		// Render separator
+		const separatorCells = columnWidths.map((w) => "─".repeat(w));
+		const separatorLine = `├─${separatorCells.join("─┼─")}─┤`;
+		lines.push(separatorLine);
+
+		// Render rows with wrapping
+		for (let rowIndex = 0; rowIndex < token.rows.length; rowIndex++) {
+			const row = token.rows[rowIndex];
+			const rowCellLines: string[][] = row.map((cell, i) => {
+				const text = this.renderInlineTokens(cell.tokens || [], styleContext);
+				return this.wrapCellText(text, columnWidths[i]);
+			});
+			const rowLineCount = Math.max(...rowCellLines.map((c) => c.length));
+
+			for (let lineIdx = 0; lineIdx < rowLineCount; lineIdx++) {
+				const rowParts = rowCellLines.map((cellLines, colIdx) => {
+					const text = cellLines[lineIdx] || "";
+					return text + " ".repeat(Math.max(0, columnWidths[colIdx] - visibleWidth(text)));
+				});
+				lines.push(`│ ${rowParts.join(" │ ")} │`);
+			}
+
+			if (rowIndex < token.rows.length - 1) {
+				lines.push(separatorLine);
+			}
+		}
+
+		// Render bottom border
+		const bottomBorderCells = columnWidths.map((w) => "─".repeat(w));
+		lines.push(`└─${bottomBorderCells.join("─┴─")}─┘`);
+
+		if (nextTokenType && nextTokenType !== "space") {
+			lines.push(""); // Add spacing after table
+		}
+		return lines;
+	}
+}

pi-mono-reference/packages/tui/src/components/select-list.ts

@@ -0,0 +1,229 @@
+import { getKeybindings } from "../keybindings.js";
+import type { Component } from "../tui.js";
+import { truncateToWidth, visibleWidth } from "../utils.js";
+
+const DEFAULT_PRIMARY_COLUMN_WIDTH = 32;
+const PRIMARY_COLUMN_GAP = 2;
+const MIN_DESCRIPTION_WIDTH = 10;
+
+const normalizeToSingleLine = (text: string): string => text.replace(/[\r\n]+/g, " ").trim();
+const clamp = (value: number, min: number, max: number): number => Math.max(min, Math.min(value, max));
+
+export interface SelectItem {
+	value: string;
+	label: string;
+	description?: string;
+}
+
+export interface SelectListTheme {
+	selectedPrefix: (text: string) => string;
+	selectedText: (text: string) => string;
+	description: (text: string) => string;
+	scrollInfo: (text: string) => string;
+	noMatch: (text: string) => string;
+}
+
+export interface SelectListTruncatePrimaryContext {
+	text: string;
+	maxWidth: number;
+	columnWidth: number;
+	item: SelectItem;
+	isSelected: boolean;
+}
+
+export interface SelectListLayoutOptions {
+	minPrimaryColumnWidth?: number;
+	maxPrimaryColumnWidth?: number;
+	truncatePrimary?: (context: SelectListTruncatePrimaryContext) => string;
+}
+
+export class SelectList implements Component {
+	private items: SelectItem[] = [];
+	private filteredItems: SelectItem[] = [];
+	private selectedIndex: number = 0;
+	private maxVisible: number = 5;
+	private theme: SelectListTheme;
+	private layout: SelectListLayoutOptions;
+
+	public onSelect?: (item: SelectItem) => void;
+	public onCancel?: () => void;
+	public onSelectionChange?: (item: SelectItem) => void;
+
+	constructor(items: SelectItem[], maxVisible: number, theme: SelectListTheme, layout: SelectListLayoutOptions = {}) {
+		this.items = items;
+		this.filteredItems = items;
+		this.maxVisible = maxVisible;
+		this.theme = theme;
+		this.layout = layout;
+	}
+
+	setFilter(filter: string): void {
+		this.filteredItems = this.items.filter((item) => item.value.toLowerCase().startsWith(filter.toLowerCase()));
+		// Reset selection when filter changes
+		this.selectedIndex = 0;
+	}
+
+	setSelectedIndex(index: number): void {
+		this.selectedIndex = Math.max(0, Math.min(index, this.filteredItems.length - 1));
+	}
+
+	invalidate(): void {
+		// No cached state to invalidate currently
+	}
+
+	render(width: number): string[] {
+		const lines: string[] = [];
+
+		// If no items match filter, show message
+		if (this.filteredItems.length === 0) {
+			lines.push(this.theme.noMatch("  No matching commands"));
+			return lines;
+		}
+
+		const primaryColumnWidth = this.getPrimaryColumnWidth();
+
+		// Calculate visible range with scrolling
+		const startIndex = Math.max(
+			0,
+			Math.min(this.selectedIndex - Math.floor(this.maxVisible / 2), this.filteredItems.length - this.maxVisible),
+		);
+		const endIndex = Math.min(startIndex + this.maxVisible, this.filteredItems.length);
+
+		// Render visible items
+		for (let i = startIndex; i < endIndex; i++) {
+			const item = this.filteredItems[i];
+			if (!item) continue;
+
+			const isSelected = i === this.selectedIndex;
+			const descriptionSingleLine = item.description ? normalizeToSingleLine(item.description) : undefined;
+			lines.push(this.renderItem(item, isSelected, width, descriptionSingleLine, primaryColumnWidth));
+		}
+
+		// Add scroll indicators if needed
+		if (startIndex > 0 || endIndex < this.filteredItems.length) {
+			const scrollText = `  (${this.selectedIndex + 1}/${this.filteredItems.length})`;
+			// Truncate if too long for terminal
+			lines.push(this.theme.scrollInfo(truncateToWidth(scrollText, width - 2, "")));
+		}
+
+		return lines;
+	}
+
+	handleInput(keyData: string): void {
+		const kb = getKeybindings();
+		// Up arrow - wrap to bottom when at top
+		if (kb.matches(keyData, "tui.select.up")) {
+			this.selectedIndex = this.selectedIndex === 0 ? this.filteredItems.length - 1 : this.selectedIndex - 1;
+			this.notifySelectionChange();
+		}
+		// Down arrow - wrap to top when at bottom
+		else if (kb.matches(keyData, "tui.select.down")) {
+			this.selectedIndex = this.selectedIndex === this.filteredItems.length - 1 ? 0 : this.selectedIndex + 1;
+			this.notifySelectionChange();
+		}
+		// Enter
+		else if (kb.matches(keyData, "tui.select.confirm")) {
+			const selectedItem = this.filteredItems[this.selectedIndex];
+			if (selectedItem && this.onSelect) {
+				this.onSelect(selectedItem);
+			}
+		}
+		// Escape or Ctrl+C
+		else if (kb.matches(keyData, "tui.select.cancel")) {
+			if (this.onCancel) {
+				this.onCancel();
+			}
+		}
+	}
+
+	private renderItem(
+		item: SelectItem,
+		isSelected: boolean,
+		width: number,
+		descriptionSingleLine: string | undefined,
+		primaryColumnWidth: number,
+	): string {
+		const prefix = isSelected ? "→ " : "  ";
+		const prefixWidth = visibleWidth(prefix);
+
+		if (descriptionSingleLine && width > 40) {
+			const effectivePrimaryColumnWidth = Math.max(1, Math.min(primaryColumnWidth, width - prefixWidth - 4));
+			const maxPrimaryWidth = Math.max(1, effectivePrimaryColumnWidth - PRIMARY_COLUMN_GAP);
+			const truncatedValue = this.truncatePrimary(item, isSelected, maxPrimaryWidth, effectivePrimaryColumnWidth);
+			const truncatedValueWidth = visibleWidth(truncatedValue);
+			const spacing = " ".repeat(Math.max(1, effectivePrimaryColumnWidth - truncatedValueWidth));
+			const descriptionStart = prefixWidth + truncatedValueWidth + spacing.length;
+			const remainingWidth = width - descriptionStart - 2; // -2 for safety
+
+			if (remainingWidth > MIN_DESCRIPTION_WIDTH) {
+				const truncatedDesc = truncateToWidth(descriptionSingleLine, remainingWidth, "");
+				if (isSelected) {
+					return this.theme.selectedText(`${prefix}${truncatedValue}${spacing}${truncatedDesc}`);
+				}
+
+				const descText = this.theme.description(spacing + truncatedDesc);
+				return prefix + truncatedValue + descText;
+			}
+		}
+
+		const maxWidth = width - prefixWidth - 2;
+		const truncatedValue = this.truncatePrimary(item, isSelected, maxWidth, maxWidth);
+		if (isSelected) {
+			return this.theme.selectedText(`${prefix}${truncatedValue}`);
+		}
+
+		return prefix + truncatedValue;
+	}
+
+	private getPrimaryColumnWidth(): number {
+		const { min, max } = this.getPrimaryColumnBounds();
+		const widestPrimary = this.filteredItems.reduce((widest, item) => {
+			return Math.max(widest, visibleWidth(this.getDisplayValue(item)) + PRIMARY_COLUMN_GAP);
+		}, 0);
+
+		return clamp(widestPrimary, min, max);
+	}
+
+	private getPrimaryColumnBounds(): { min: number; max: number } {
+		const rawMin =
+			this.layout.minPrimaryColumnWidth ?? this.layout.maxPrimaryColumnWidth ?? DEFAULT_PRIMARY_COLUMN_WIDTH;
+		const rawMax =
+			this.layout.maxPrimaryColumnWidth ?? this.layout.minPrimaryColumnWidth ?? DEFAULT_PRIMARY_COLUMN_WIDTH;
+
+		return {
+			min: Math.max(1, Math.min(rawMin, rawMax)),
+			max: Math.max(1, Math.max(rawMin, rawMax)),
+		};
+	}
+
+	private truncatePrimary(item: SelectItem, isSelected: boolean, maxWidth: number, columnWidth: number): string {
+		const displayValue = this.getDisplayValue(item);
+		const truncatedValue = this.layout.truncatePrimary
+			? this.layout.truncatePrimary({
+					text: displayValue,
+					maxWidth,
+					columnWidth,
+					item,
+					isSelected,
+				})
+			: truncateToWidth(displayValue, maxWidth, "");
+
+		return truncateToWidth(truncatedValue, maxWidth, "");
+	}
+
+	private getDisplayValue(item: SelectItem): string {
+		return item.label || item.value;
+	}
+
+	private notifySelectionChange(): void {
+		const selectedItem = this.filteredItems[this.selectedIndex];
+		if (selectedItem && this.onSelectionChange) {
+			this.onSelectionChange(selectedItem);
+		}
+	}
+
+	getSelectedItem(): SelectItem | null {
+		const item = this.filteredItems[this.selectedIndex];
+		return item || null;
+	}
+}

pi-mono-reference/packages/tui/src/components/settings-list.ts

@@ -0,0 +1,250 @@
+import { fuzzyFilter } from "../fuzzy.js";
+import { getKeybindings } from "../keybindings.js";
+import type { Component } from "../tui.js";
+import { truncateToWidth, visibleWidth, wrapTextWithAnsi } from "../utils.js";
+import { Input } from "./input.js";
+
+export interface SettingItem {
+	/** Unique identifier for this setting */
+	id: string;
+	/** Display label (left side) */
+	label: string;
+	/** Optional description shown when selected */
+	description?: string;
+	/** Current value to display (right side) */
+	currentValue: string;
+	/** If provided, Enter/Space cycles through these values */
+	values?: string[];
+	/** If provided, Enter opens this submenu. Receives current value and done callback. */
+	submenu?: (currentValue: string, done: (selectedValue?: string) => void) => Component;
+}
+
+export interface SettingsListTheme {
+	label: (text: string, selected: boolean) => string;
+	value: (text: string, selected: boolean) => string;
+	description: (text: string) => string;
+	cursor: string;
+	hint: (text: string) => string;
+}
+
+export interface SettingsListOptions {
+	enableSearch?: boolean;
+}
+
+export class SettingsList implements Component {
+	private items: SettingItem[];
+	private filteredItems: SettingItem[];
+	private theme: SettingsListTheme;
+	private selectedIndex = 0;
+	private maxVisible: number;
+	private onChange: (id: string, newValue: string) => void;
+	private onCancel: () => void;
+	private searchInput?: Input;
+	private searchEnabled: boolean;
+
+	// Submenu state
+	private submenuComponent: Component | null = null;
+	private submenuItemIndex: number | null = null;
+
+	constructor(
+		items: SettingItem[],
+		maxVisible: number,
+		theme: SettingsListTheme,
+		onChange: (id: string, newValue: string) => void,
+		onCancel: () => void,
+		options: SettingsListOptions = {},
+	) {
+		this.items = items;
+		this.filteredItems = items;
+		this.maxVisible = maxVisible;
+		this.theme = theme;
+		this.onChange = onChange;
+		this.onCancel = onCancel;
+		this.searchEnabled = options.enableSearch ?? false;
+		if (this.searchEnabled) {
+			this.searchInput = new Input();
+		}
+	}
+
+	/** Update an item's currentValue */
+	updateValue(id: string, newValue: string): void {
+		const item = this.items.find((i) => i.id === id);
+		if (item) {
+			item.currentValue = newValue;
+		}
+	}
+
+	invalidate(): void {
+		this.submenuComponent?.invalidate?.();
+	}
+
+	render(width: number): string[] {
+		// If submenu is active, render it instead
+		if (this.submenuComponent) {
+			return this.submenuComponent.render(width);
+		}
+
+		return this.renderMainList(width);
+	}
+
+	private renderMainList(width: number): string[] {
+		const lines: string[] = [];
+
+		if (this.searchEnabled && this.searchInput) {
+			lines.push(...this.searchInput.render(width));
+			lines.push("");
+		}
+
+		if (this.items.length === 0) {
+			lines.push(this.theme.hint("  No settings available"));
+			if (this.searchEnabled) {
+				this.addHintLine(lines, width);
+			}
+			return lines;
+		}
+
+		const displayItems = this.searchEnabled ? this.filteredItems : this.items;
+		if (displayItems.length === 0) {
+			lines.push(truncateToWidth(this.theme.hint("  No matching settings"), width));
+			this.addHintLine(lines, width);
+			return lines;
+		}
+
+		// Calculate visible range with scrolling
+		const startIndex = Math.max(
+			0,
+			Math.min(this.selectedIndex - Math.floor(this.maxVisible / 2), displayItems.length - this.maxVisible),
+		);
+		const endIndex = Math.min(startIndex + this.maxVisible, displayItems.length);
+
+		// Calculate max label width for alignment
+		const maxLabelWidth = Math.min(30, Math.max(...this.items.map((item) => visibleWidth(item.label))));
+
+		// Render visible items
+		for (let i = startIndex; i < endIndex; i++) {
+			const item = displayItems[i];
+			if (!item) continue;
+
+			const isSelected = i === this.selectedIndex;
+			const prefix = isSelected ? this.theme.cursor : "  ";
+			const prefixWidth = visibleWidth(prefix);
+
+			// Pad label to align values
+			const labelPadded = item.label + " ".repeat(Math.max(0, maxLabelWidth - visibleWidth(item.label)));
+			const labelText = this.theme.label(labelPadded, isSelected);
+
+			// Calculate space for value
+			const separator = "  ";
+			const usedWidth = prefixWidth + maxLabelWidth + visibleWidth(separator);
+			const valueMaxWidth = width - usedWidth - 2;
+
+			const valueText = this.theme.value(truncateToWidth(item.currentValue, valueMaxWidth, ""), isSelected);
+
+			lines.push(truncateToWidth(prefix + labelText + separator + valueText, width));
+		}
+
+		// Add scroll indicator if needed
+		if (startIndex > 0 || endIndex < displayItems.length) {
+			const scrollText = `  (${this.selectedIndex + 1}/${displayItems.length})`;
+			lines.push(this.theme.hint(truncateToWidth(scrollText, width - 2, "")));
+		}
+
+		// Add description for selected item
+		const selectedItem = displayItems[this.selectedIndex];
+		if (selectedItem?.description) {
+			lines.push("");
+			const wrappedDesc = wrapTextWithAnsi(selectedItem.description, width - 4);
+			for (const line of wrappedDesc) {
+				lines.push(this.theme.description(`  ${line}`));
+			}
+		}
+
+		// Add hint
+		this.addHintLine(lines, width);
+
+		return lines;
+	}
+
+	handleInput(data: string): void {
+		// If submenu is active, delegate all input to it
+		// The submenu's onCancel (triggered by escape) will call done() which closes it
+		if (this.submenuComponent) {
+			this.submenuComponent.handleInput?.(data);
+			return;
+		}
+
+		// Main list input handling
+		const kb = getKeybindings();
+		const displayItems = this.searchEnabled ? this.filteredItems : this.items;
+		if (kb.matches(data, "tui.select.up")) {
+			if (displayItems.length === 0) return;
+			this.selectedIndex = this.selectedIndex === 0 ? displayItems.length - 1 : this.selectedIndex - 1;
+		} else if (kb.matches(data, "tui.select.down")) {
+			if (displayItems.length === 0) return;
+			this.selectedIndex = this.selectedIndex === displayItems.length - 1 ? 0 : this.selectedIndex + 1;
+		} else if (kb.matches(data, "tui.select.confirm") || data === " ") {
+			this.activateItem();
+		} else if (kb.matches(data, "tui.select.cancel")) {
+			this.onCancel();
+		} else if (this.searchEnabled && this.searchInput) {
+			const sanitized = data.replace(/ /g, "");
+			if (!sanitized) {
+				return;
+			}
+			this.searchInput.handleInput(sanitized);
+			this.applyFilter(this.searchInput.getValue());
+		}
+	}
+
+	private activateItem(): void {
+		const item = this.searchEnabled ? this.filteredItems[this.selectedIndex] : this.items[this.selectedIndex];
+		if (!item) return;
+
+		if (item.submenu) {
+			// Open submenu, passing current value so it can pre-select correctly
+			this.submenuItemIndex = this.selectedIndex;
+			this.submenuComponent = item.submenu(item.currentValue, (selectedValue?: string) => {
+				if (selectedValue !== undefined) {
+					item.currentValue = selectedValue;
+					this.onChange(item.id, selectedValue);
+				}
+				this.closeSubmenu();
+			});
+		} else if (item.values && item.values.length > 0) {
+			// Cycle through values
+			const currentIndex = item.values.indexOf(item.currentValue);
+			const nextIndex = (currentIndex + 1) % item.values.length;
+			const newValue = item.values[nextIndex];
+			item.currentValue = newValue;
+			this.onChange(item.id, newValue);
+		}
+	}
+
+	private closeSubmenu(): void {
+		this.submenuComponent = null;
+		// Restore selection to the item that opened the submenu
+		if (this.submenuItemIndex !== null) {
+			this.selectedIndex = this.submenuItemIndex;
+			this.submenuItemIndex = null;
+		}
+	}
+
+	private applyFilter(query: string): void {
+		this.filteredItems = fuzzyFilter(this.items, query, (item) => item.label);
+		this.selectedIndex = 0;
+	}
+
+	private addHintLine(lines: string[], width: number): void {
+		lines.push("");
+		lines.push(
+			truncateToWidth(
+				this.theme.hint(
+					this.searchEnabled
+						? "  Type to search · Enter/Space to change · Esc to cancel"
+						: "  Enter/Space to change · Esc to cancel",
+				),
+				width,
+			),
+		);
+	}
+}

pi-mono-reference/packages/tui/src/components/spacer.ts

@@ -0,0 +1,28 @@
+import type { Component } from "../tui.js";
+
+/**
+ * Spacer component that renders empty lines
+ */
+export class Spacer implements Component {
+	private lines: number;
+
+	constructor(lines: number = 1) {
+		this.lines = lines;
+	}
+
+	setLines(lines: number): void {
+		this.lines = lines;
+	}
+
+	invalidate(): void {
+		// No cached state to invalidate currently
+	}
+
+	render(_width: number): string[] {
+		const result: string[] = [];
+		for (let i = 0; i < this.lines; i++) {
+			result.push("");
+		}
+		return result;
+	}
+}

pi-mono-reference/packages/tui/src/components/text.ts

@@ -0,0 +1,106 @@
+import type { Component } from "../tui.js";
+import { applyBackgroundToLine, visibleWidth, wrapTextWithAnsi } from "../utils.js";
+
+/**
+ * Text component - displays multi-line text with word wrapping
+ */
+export class Text implements Component {
+	private text: string;
+	private paddingX: number; // Left/right padding
+	private paddingY: number; // Top/bottom padding
+	private customBgFn?: (text: string) => string;
+
+	// Cache for rendered output
+	private cachedText?: string;
+	private cachedWidth?: number;
+	private cachedLines?: string[];
+
+	constructor(text: string = "", paddingX: number = 1, paddingY: number = 1, customBgFn?: (text: string) => string) {
+		this.text = text;
+		this.paddingX = paddingX;
+		this.paddingY = paddingY;
+		this.customBgFn = customBgFn;
+	}
+
+	setText(text: string): void {
+		this.text = text;
+		this.cachedText = undefined;
+		this.cachedWidth = undefined;
+		this.cachedLines = undefined;
+	}
+
+	setCustomBgFn(customBgFn?: (text: string) => string): void {
+		this.customBgFn = customBgFn;
+		this.cachedText = undefined;
+		this.cachedWidth = undefined;
+		this.cachedLines = undefined;
+	}
+
+	invalidate(): void {
+		this.cachedText = undefined;
+		this.cachedWidth = undefined;
+		this.cachedLines = undefined;
+	}
+
+	render(width: number): string[] {
+		// Check cache
+		if (this.cachedLines && this.cachedText === this.text && this.cachedWidth === width) {
+			return this.cachedLines;
+		}
+
+		// Don't render anything if there's no actual text
+		if (!this.text || this.text.trim() === "") {
+			const result: string[] = [];
+			this.cachedText = this.text;
+			this.cachedWidth = width;
+			this.cachedLines = result;
+			return result;
+		}
+
+		// Replace tabs with 3 spaces
+		const normalizedText = this.text.replace(/\t/g, "   ");
+
+		// Calculate content width (subtract left/right margins)
+		const contentWidth = Math.max(1, width - this.paddingX * 2);
+
+		// Wrap text (this preserves ANSI codes but does NOT pad)
+		const wrappedLines = wrapTextWithAnsi(normalizedText, contentWidth);
+
+		// Add margins and background to each line
+		const leftMargin = " ".repeat(this.paddingX);
+		const rightMargin = " ".repeat(this.paddingX);
+		const contentLines: string[] = [];
+
+		for (const line of wrappedLines) {
+			// Add margins
+			const lineWithMargins = leftMargin + line + rightMargin;
+
+			// Apply background if specified (this also pads to full width)
+			if (this.customBgFn) {
+				contentLines.push(applyBackgroundToLine(lineWithMargins, width, this.customBgFn));
+			} else {
+				// No background - just pad to width with spaces
+				const visibleLen = visibleWidth(lineWithMargins);
+				const paddingNeeded = Math.max(0, width - visibleLen);
+				contentLines.push(lineWithMargins + " ".repeat(paddingNeeded));
+			}
+		}
+
+		// Add top/bottom padding (empty lines)
+		const emptyLine = " ".repeat(width);
+		const emptyLines: string[] = [];
+		for (let i = 0; i < this.paddingY; i++) {
+			const line = this.customBgFn ? applyBackgroundToLine(emptyLine, width, this.customBgFn) : emptyLine;
+			emptyLines.push(line);
+		}
+
+		const result = [...emptyLines, ...contentLines, ...emptyLines];
+
+		// Update cache
+		this.cachedText = this.text;
+		this.cachedWidth = width;
+		this.cachedLines = result;
+
+		return result.length > 0 ? result : [""];
+	}
+}

pi-mono-reference/packages/tui/src/components/truncated-text.ts

@@ -0,0 +1,65 @@
+import type { Component } from "../tui.js";
+import { truncateToWidth, visibleWidth } from "../utils.js";
+
+/**
+ * Text component that truncates to fit viewport width
+ */
+export class TruncatedText implements Component {
+	private text: string;
+	private paddingX: number;
+	private paddingY: number;
+
+	constructor(text: string, paddingX: number = 0, paddingY: number = 0) {
+		this.text = text;
+		this.paddingX = paddingX;
+		this.paddingY = paddingY;
+	}
+
+	invalidate(): void {
+		// No cached state to invalidate currently
+	}
+
+	render(width: number): string[] {
+		const result: string[] = [];
+
+		// Empty line padded to width
+		const emptyLine = " ".repeat(width);
+
+		// Add vertical padding above
+		for (let i = 0; i < this.paddingY; i++) {
+			result.push(emptyLine);
+		}
+
+		// Calculate available width after horizontal padding
+		const availableWidth = Math.max(1, width - this.paddingX * 2);
+
+		// Take only the first line (stop at newline)
+		let singleLineText = this.text;
+		const newlineIndex = this.text.indexOf("\n");
+		if (newlineIndex !== -1) {
+			singleLineText = this.text.substring(0, newlineIndex);
+		}
+
+		// Truncate text if needed (accounting for ANSI codes)
+		const displayText = truncateToWidth(singleLineText, availableWidth);
+
+		// Add horizontal padding
+		const leftPadding = " ".repeat(this.paddingX);
+		const rightPadding = " ".repeat(this.paddingX);
+		const lineWithPadding = leftPadding + displayText + rightPadding;
+
+		// Pad line to exactly width characters
+		const lineVisibleWidth = visibleWidth(lineWithPadding);
+		const paddingNeeded = Math.max(0, width - lineVisibleWidth);
+		const finalLine = lineWithPadding + " ".repeat(paddingNeeded);
+
+		result.push(finalLine);
+
+		// Add vertical padding below
+		for (let i = 0; i < this.paddingY; i++) {
+			result.push(emptyLine);
+		}
+
+		return result;
+	}
+}