Fix footer overflow on narrow terminals, add /arminsayshi easter egg

packages/coding-agent/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Fixed
+
+- **Footer overflow on narrow terminals**: Fixed footer path display exceeding terminal width when resizing to very narrow widths, causing rendering crashes. /arminsayshi
+
 ## [0.24.2] - 2025-12-20
 
 ### Fixed

packages/coding-agent/src/modes/interactive/components/armin.ts

@@ -0,0 +1,382 @@
+/**
+ * Armin says hi! A fun easter egg with animated XBM art.
+ */
+
+import type { Component, TUI } from "@mariozechner/pi-tui";
+import { theme } from "../theme/theme.js";
+
+// XBM image: 31x36 pixels, LSB first, 1=background, 0=foreground
+const WIDTH = 31;
+const HEIGHT = 36;
+const BITS = [
+	0xff, 0xff, 0xff, 0x7f, 0xff, 0xf0, 0xff, 0x7f, 0xff, 0xed, 0xff, 0x7f, 0xff, 0xdb, 0xff, 0x7f, 0xff, 0xb7, 0xff,
+	0x7f, 0xff, 0x77, 0xfe, 0x7f, 0x3f, 0xf8, 0xfe, 0x7f, 0xdf, 0xff, 0xfe, 0x7f, 0xdf, 0x3f, 0xfc, 0x7f, 0x9f, 0xc3,
+	0xfb, 0x7f, 0x6f, 0xfc, 0xf4, 0x7f, 0xf7, 0x0f, 0xf7, 0x7f, 0xf7, 0xff, 0xf7, 0x7f, 0xf7, 0xff, 0xe3, 0x7f, 0xf7,
+	0x07, 0xe8, 0x7f, 0xef, 0xf8, 0x67, 0x70, 0x0f, 0xff, 0xbb, 0x6f, 0xf1, 0x00, 0xd0, 0x5b, 0xfd, 0x3f, 0xec, 0x53,
+	0xc1, 0xff, 0xef, 0x57, 0x9f, 0xfd, 0xee, 0x5f, 0x9f, 0xfc, 0xae, 0x5f, 0x1f, 0x78, 0xac, 0x5f, 0x3f, 0x00, 0x50,
+	0x6c, 0x7f, 0x00, 0xdc, 0x77, 0xff, 0xc0, 0x3f, 0x78, 0xff, 0x01, 0xf8, 0x7f, 0xff, 0x03, 0x9c, 0x78, 0xff, 0x07,
+	0x8c, 0x7c, 0xff, 0x0f, 0xce, 0x78, 0xff, 0xff, 0xcf, 0x7f, 0xff, 0xff, 0xcf, 0x78, 0xff, 0xff, 0xdf, 0x78, 0xff,
+	0xff, 0xdf, 0x7d, 0xff, 0xff, 0x3f, 0x7e, 0xff, 0xff, 0xff, 0x7f,
+];
+
+const BYTES_PER_ROW = Math.ceil(WIDTH / 8);
+const DISPLAY_HEIGHT = Math.ceil(HEIGHT / 2); // Half-block rendering
+
+type Effect = "typewriter" | "scanline" | "rain" | "fade" | "crt" | "glitch" | "dissolve";
+
+const EFFECTS: Effect[] = ["typewriter", "scanline", "rain", "fade", "crt", "glitch", "dissolve"];
+
+// Get pixel at (x, y): true = foreground, false = background
+function getPixel(x: number, y: number): boolean {
+	if (y >= HEIGHT) return false;
+	const byteIndex = y * BYTES_PER_ROW + Math.floor(x / 8);
+	const bitIndex = x % 8;
+	return ((BITS[byteIndex] >> bitIndex) & 1) === 0;
+}
+
+// Get the character for a cell (2 vertical pixels packed)
+function getChar(x: number, row: number): string {
+	const upper = getPixel(x, row * 2);
+	const lower = getPixel(x, row * 2 + 1);
+	if (upper && lower) return "█";
+	if (upper) return "▀";
+	if (lower) return "▄";
+	return " ";
+}
+
+// Build the final image grid
+function buildFinalGrid(): string[][] {
+	const grid: string[][] = [];
+	for (let row = 0; row < DISPLAY_HEIGHT; row++) {
+		const line: string[] = [];
+		for (let x = 0; x < WIDTH; x++) {
+			line.push(getChar(x, row));
+		}
+		grid.push(line);
+	}
+	return grid;
+}
+
+export class ArminComponent implements Component {
+	private ui: TUI;
+	private interval: ReturnType<typeof setInterval> | null = null;
+	private effect: Effect;
+	private finalGrid: string[][];
+	private currentGrid: string[][];
+	private effectState: Record<string, unknown> = {};
+	private cachedLines: string[] = [];
+	private cachedWidth = 0;
+	private gridVersion = 0;
+	private cachedVersion = -1;
+
+	constructor(ui: TUI) {
+		this.ui = ui;
+		this.effect = EFFECTS[Math.floor(Math.random() * EFFECTS.length)];
+		this.finalGrid = buildFinalGrid();
+		this.currentGrid = this.createEmptyGrid();
+
+		this.initEffect();
+		this.startAnimation();
+	}
+
+	invalidate(): void {
+		this.cachedWidth = 0;
+	}
+
+	render(width: number): string[] {
+		if (width === this.cachedWidth && this.cachedVersion === this.gridVersion) {
+			return this.cachedLines;
+		}
+
+		const padding = 1;
+		const availableWidth = width - padding;
+
+		this.cachedLines = this.currentGrid.map((row) => {
+			// Clip row to available width before applying color
+			const clipped = row.slice(0, availableWidth).join("");
+			const padRight = Math.max(0, width - padding - clipped.length);
+			return " " + theme.fg("accent", clipped) + " ".repeat(padRight);
+		});
+
+		// Add "ARMIN SAYS HI" at the end
+		const message = "ARMIN SAYS HI";
+		const msgPadRight = Math.max(0, width - padding - message.length);
+		this.cachedLines.push(" " + theme.fg("accent", message) + " ".repeat(msgPadRight));
+
+		this.cachedWidth = width;
+		this.cachedVersion = this.gridVersion;
+
+		return this.cachedLines;
+	}
+
+	private createEmptyGrid(): string[][] {
+		return Array.from({ length: DISPLAY_HEIGHT }, () => Array(WIDTH).fill(" "));
+	}
+
+	private initEffect(): void {
+		switch (this.effect) {
+			case "typewriter":
+				this.effectState = { pos: 0 };
+				break;
+			case "scanline":
+				this.effectState = { row: 0 };
+				break;
+			case "rain":
+				// Track falling position for each column
+				this.effectState = {
+					drops: Array.from({ length: WIDTH }, () => ({
+						y: -Math.floor(Math.random() * DISPLAY_HEIGHT * 2),
+						settled: 0,
+					})),
+				};
+				break;
+			case "fade": {
+				// Shuffle all pixel positions
+				const positions: [number, number][] = [];
+				for (let row = 0; row < DISPLAY_HEIGHT; row++) {
+					for (let x = 0; x < WIDTH; x++) {
+						positions.push([row, x]);
+					}
+				}
+				// Fisher-Yates shuffle
+				for (let i = positions.length - 1; i > 0; i--) {
+					const j = Math.floor(Math.random() * (i + 1));
+					[positions[i], positions[j]] = [positions[j], positions[i]];
+				}
+				this.effectState = { positions, idx: 0 };
+				break;
+			}
+			case "crt":
+				this.effectState = { expansion: 0 };
+				break;
+			case "glitch":
+				this.effectState = { phase: 0, glitchFrames: 8 };
+				break;
+			case "dissolve": {
+				// Start with random noise
+				this.currentGrid = Array.from({ length: DISPLAY_HEIGHT }, () =>
+					Array.from({ length: WIDTH }, () => {
+						const chars = [" ", "░", "▒", "▓", "█", "▀", "▄"];
+						return chars[Math.floor(Math.random() * chars.length)];
+					}),
+				);
+				// Shuffle positions for gradual resolve
+				const dissolvePositions: [number, number][] = [];
+				for (let row = 0; row < DISPLAY_HEIGHT; row++) {
+					for (let x = 0; x < WIDTH; x++) {
+						dissolvePositions.push([row, x]);
+					}
+				}
+				for (let i = dissolvePositions.length - 1; i > 0; i--) {
+					const j = Math.floor(Math.random() * (i + 1));
+					[dissolvePositions[i], dissolvePositions[j]] = [dissolvePositions[j], dissolvePositions[i]];
+				}
+				this.effectState = { positions: dissolvePositions, idx: 0 };
+				break;
+			}
+		}
+	}
+
+	private startAnimation(): void {
+		const fps = this.effect === "glitch" ? 60 : 30;
+		this.interval = setInterval(() => {
+			const done = this.tickEffect();
+			this.updateDisplay();
+			this.ui.requestRender();
+			if (done) {
+				this.stopAnimation();
+			}
+		}, 1000 / fps);
+	}
+
+	private stopAnimation(): void {
+		if (this.interval) {
+			clearInterval(this.interval);
+			this.interval = null;
+		}
+	}
+
+	private tickEffect(): boolean {
+		switch (this.effect) {
+			case "typewriter":
+				return this.tickTypewriter();
+			case "scanline":
+				return this.tickScanline();
+			case "rain":
+				return this.tickRain();
+			case "fade":
+				return this.tickFade();
+			case "crt":
+				return this.tickCrt();
+			case "glitch":
+				return this.tickGlitch();
+			case "dissolve":
+				return this.tickDissolve();
+			default:
+				return true;
+		}
+	}
+
+	private tickTypewriter(): boolean {
+		const state = this.effectState as { pos: number };
+		const pixelsPerFrame = 3;
+
+		for (let i = 0; i < pixelsPerFrame; i++) {
+			const row = Math.floor(state.pos / WIDTH);
+			const x = state.pos % WIDTH;
+			if (row >= DISPLAY_HEIGHT) return true;
+			this.currentGrid[row][x] = this.finalGrid[row][x];
+			state.pos++;
+		}
+		return false;
+	}
+
+	private tickScanline(): boolean {
+		const state = this.effectState as { row: number };
+		if (state.row >= DISPLAY_HEIGHT) return true;
+
+		// Copy row
+		for (let x = 0; x < WIDTH; x++) {
+			this.currentGrid[state.row][x] = this.finalGrid[state.row][x];
+		}
+		state.row++;
+		return false;
+	}
+
+	private tickRain(): boolean {
+		const state = this.effectState as {
+			drops: { y: number; settled: number }[];
+		};
+
+		let allSettled = true;
+		this.currentGrid = this.createEmptyGrid();
+
+		for (let x = 0; x < WIDTH; x++) {
+			const drop = state.drops[x];
+
+			// Draw settled pixels
+			for (let row = DISPLAY_HEIGHT - 1; row >= DISPLAY_HEIGHT - drop.settled; row--) {
+				if (row >= 0) {
+					this.currentGrid[row][x] = this.finalGrid[row][x];
+				}
+			}
+
+			// Check if this column is done
+			if (drop.settled >= DISPLAY_HEIGHT) continue;
+
+			allSettled = false;
+
+			// Find the target row for this column (lowest non-space pixel)
+			let targetRow = -1;
+			for (let row = DISPLAY_HEIGHT - 1 - drop.settled; row >= 0; row--) {
+				if (this.finalGrid[row][x] !== " ") {
+					targetRow = row;
+					break;
+				}
+			}
+
+			// Move drop down
+			drop.y++;
+
+			// Draw falling drop
+			if (drop.y >= 0 && drop.y < DISPLAY_HEIGHT) {
+				if (targetRow >= 0 && drop.y >= targetRow) {
+					// Settle
+					drop.settled = DISPLAY_HEIGHT - targetRow;
+					drop.y = -Math.floor(Math.random() * 5) - 1;
+				} else {
+					// Still falling
+					this.currentGrid[drop.y][x] = "▓";
+				}
+			}
+		}
+
+		return allSettled;
+	}
+
+	private tickFade(): boolean {
+		const state = this.effectState as { positions: [number, number][]; idx: number };
+		const pixelsPerFrame = 15;
+
+		for (let i = 0; i < pixelsPerFrame; i++) {
+			if (state.idx >= state.positions.length) return true;
+			const [row, x] = state.positions[state.idx];
+			this.currentGrid[row][x] = this.finalGrid[row][x];
+			state.idx++;
+		}
+		return false;
+	}
+
+	private tickCrt(): boolean {
+		const state = this.effectState as { expansion: number };
+		const midRow = Math.floor(DISPLAY_HEIGHT / 2);
+
+		this.currentGrid = this.createEmptyGrid();
+
+		// Draw from middle expanding outward
+		const top = midRow - state.expansion;
+		const bottom = midRow + state.expansion;
+
+		for (let row = Math.max(0, top); row <= Math.min(DISPLAY_HEIGHT - 1, bottom); row++) {
+			for (let x = 0; x < WIDTH; x++) {
+				this.currentGrid[row][x] = this.finalGrid[row][x];
+			}
+		}
+
+		state.expansion++;
+		return state.expansion > DISPLAY_HEIGHT;
+	}
+
+	private tickGlitch(): boolean {
+		const state = this.effectState as { phase: number; glitchFrames: number };
+
+		if (state.phase < state.glitchFrames) {
+			// Glitch phase: show corrupted version
+			this.currentGrid = this.finalGrid.map((row) => {
+				const offset = Math.floor(Math.random() * 7) - 3;
+				const glitchRow = [...row];
+
+				// Random horizontal offset
+				if (Math.random() < 0.3) {
+					const shifted = glitchRow.slice(offset).concat(glitchRow.slice(0, offset));
+					return shifted.slice(0, WIDTH);
+				}
+
+				// Random vertical swap
+				if (Math.random() < 0.2) {
+					const swapRow = Math.floor(Math.random() * DISPLAY_HEIGHT);
+					return [...this.finalGrid[swapRow]];
+				}
+
+				return glitchRow;
+			});
+			state.phase++;
+			return false;
+		}
+
+		// Final frame: show clean image
+		this.currentGrid = this.finalGrid.map((row) => [...row]);
+		return true;
+	}
+
+	private tickDissolve(): boolean {
+		const state = this.effectState as { positions: [number, number][]; idx: number };
+		const pixelsPerFrame = 20;
+
+		for (let i = 0; i < pixelsPerFrame; i++) {
+			if (state.idx >= state.positions.length) return true;
+			const [row, x] = state.positions[state.idx];
+			this.currentGrid[row][x] = this.finalGrid[row][x];
+			state.idx++;
+		}
+		return false;
+	}
+
+	private updateDisplay(): void {
+		this.gridVersion++;
+	}
+
+	dispose(): void {
+		this.stopAnimation();
+	}
+}

packages/coding-agent/src/modes/interactive/components/footer.ts

@@ -188,11 +188,15 @@ export class FooterComponent implements Component {
 		}
 
 		// Truncate path if too long to fit width
-		const maxPathLength = Math.max(20, width - 10); // Leave some margin
-		if (pwd.length > maxPathLength) {
-			const start = pwd.slice(0, Math.floor(maxPathLength / 2) - 2);
-			const end = pwd.slice(-(Math.floor(maxPathLength / 2) - 1));
-			pwd = `${start}...${end}`;
+		if (pwd.length > width) {
+			const half = Math.floor(width / 2) - 2;
+			if (half > 0) {
+				const start = pwd.slice(0, half);
+				const end = pwd.slice(-(half - 1));
+				pwd = `${start}...${end}`;
+			} else {
+				pwd = pwd.slice(0, Math.max(1, width));
+			}
 		}
 
 		// Build stats line

packages/coding-agent/src/modes/interactive/interactive-mode.ts

@@ -37,6 +37,7 @@ import { loadProjectContextFiles } from "../../core/system-prompt.js";
 import type { TruncationResult } from "../../core/tools/truncate.js";
 import { getChangelogPath, parseChangelog } from "../../utils/changelog.js";
 import { copyToClipboard } from "../../utils/clipboard.js";
+import { ArminComponent } from "./components/armin.js";
 import { AssistantMessageComponent } from "./components/assistant-message.js";
 import { BashExecutionComponent } from "./components/bash-execution.js";
 import { CompactionComponent } from "./components/compaction.js";
@@ -685,6 +686,11 @@ export class InteractiveMode {
 				this.editor.setText("");
 				return;
 			}
+			if (text === "/arminsayshi") {
+				this.handleArminSaysHi();
+				this.editor.setText("");
+				return;
+			}
 			if (text === "/resume") {
 				this.showSessionSelector();
 				this.editor.setText("");
@@ -1756,6 +1762,12 @@ export class InteractiveMode {
 		this.ui.requestRender();
 	}
 
+	private handleArminSaysHi(): void {
+		this.chatContainer.addChild(new Spacer(1));
+		this.chatContainer.addChild(new ArminComponent(this.ui));
+		this.ui.requestRender();
+	}
+
 	private async handleBashCommand(command: string): Promise<void> {
 		const isDeferred = this.session.isStreaming;
 		this.bashComponent = new BashExecutionComponent(command, this.ui);