Diffusion Ant (feature/nursery) Code

ant/tests/test_gc_coro.js
ddfe6237cab5feature/nursery

test_gc_coro.js
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			// Simulate TUI-like behavior: async handler with lots of string allocations

			function stripAnsi(str) {
			return str.replace(/\x1b\[[0-9;]*m/g, '');
			}

			function pad(str, len) {
			const visible = stripAnsi(str).length;
			const diff = len - visible;
			if (diff <= 0) return str;
			return str + ' '.repeat(diff);
			}

			function render() {
			// Simulate TUI render - matches what tui.js does
			const width = 120;
			const height = 40;
			const lines = [];

			// Clear buffer
			for (let y = 0; y < height; y++) {
			lines.push(' '.repeat(width));
			}

			// Draw styled content (like the TUI does)
			for (let y = 0; y < height; y++) {
			let text = `\x1b[38;5;196mRow ${y}\x1b[0m: `;
			text += `\x1b[38;5;82m${'█'.repeat(20)}\x1b[0m`;
			text += `\x1b[2m${'░'.repeat(20)}\x1b[0m`;
			text = pad(text, width);
			lines[y] = text;
			}

			return lines.join('\n');
			}

			async function handleEvent(n) {
			// Simulate multiple renders per event (like scrolling does)
			for (let i = 0; i < 10; i++) {
			render();
			}
			}

			let count = 0;
			const interval = setInterval(() => {
			count++;
			handleEvent(count);

			const stats = Ant.stats();
			console.log(`tick ${count}: arena ${(stats.arenaUsed / 1024 / 1024).toFixed(1)}MB / ${(stats.arenaSize / 1024 / 1024).toFixed(1)}MB, rss ${(stats.rss / 1024 / 1024).toFixed(1)}MB`);

			if (count >= 500) { // Run for ~5 seconds
			clearInterval(interval);
			console.log('Done - forcing GC...');
			Ant.gc();
			setTimeout(() => {
			const after = Ant.stats();
			console.log(`after GC: arena ${(after.arenaUsed / 1024 / 1024).toFixed(1)}MB`);
			}, 10);
			}
			}, 10); // 500 * 10ms = 5 seconds

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