feat(stats): added frustration metrics to stats parser and charting

- Added new frustration and revised behavior metrics across stats types, parser mappings, and UI charts.
- Reworked session sync to fan out parsing across a capped worker pool with SyncOptions progress callbacks.
- Added worker-based parse messaging and throttled TTY progress rendering in the stats sync command.
- Updated behavior scoring to strip structured content, ignore noisy prompts, and fix profanity boundary regressions.
- Expanded user message schema and migrations, then repaired assistant model/provider links during sync backfill.
- Updated worker-import guidance in AGENTS.md and recorded sync-progress/metrics updates in package changelogs.

packages/coding-agent/CHANGELOG.md

@@ -1,12 +1,14 @@
 # Changelog
 
 ## [Unreleased]
+
 ### Breaking Changes
 
 - Changed the `timeoutMs` execution option to no longer be enforced during worker-based JS runs, so callers must rely on external cancellation signals for time limits
 
 ### Added
 
+- Added a live single-line sync progress display to the stats command showing current/total sessions while syncing
 - Added automatic inline JS evaluation fallback when worker creation failed so script execution still works in environments without worker support
 
 ### Changed

packages/coding-agent/src/cli/stats-cli.ts

@@ -8,6 +8,58 @@ import { APP_NAME, formatDuration, formatNumber, formatPercent } from "@oh-my-pi
 import chalk from "chalk";
 import { openPath } from "../utils/open";
 
+/**
+ * Single-line TTY progress bar. On a non-TTY stream we just stay quiet -
+ * the final "Synced ..." summary still prints either way.
+ */
+function createSyncProgressReporter(): {
+	onProgress: (event: { current: number; total: number; sessionFile: string }) => void;
+	finish: () => void;
+} {
+	const stream = process.stderr;
+	const isTty = stream.isTTY === true;
+	let lastWidth = 0;
+	let lastRender = 0;
+	return {
+		onProgress(event) {
+			if (!isTty) return;
+			const now = Date.now();
+			// Throttle to ~30 fps and always force a render for the last file.
+			if (event.current < event.total && now - lastRender < 33) return;
+			lastRender = now;
+			const label = chalk.dim(shortenSessionFile(event.sessionFile));
+			const pct = ((event.current / event.total) * 100).toFixed(0).padStart(3, " ");
+			const counter = chalk.cyan(`[${event.current}/${event.total}]`);
+			const line = `${counter} ${pct}%  ${label}`;
+			const columns = stream.columns ?? 120;
+			const trimmed = truncateToColumns(line, columns - 1);
+			stream.write(`\r${trimmed.padEnd(lastWidth)}`);
+			lastWidth = trimmed.length;
+		},
+		finish() {
+			if (!isTty || lastWidth === 0) return;
+			stream.write(`\r${" ".repeat(lastWidth)}\r`);
+			lastWidth = 0;
+		},
+	};
+}
+
+function shortenSessionFile(p: string): string {
+	const marker = "/sessions/";
+	const idx = p.indexOf(marker);
+	return idx >= 0 ? p.slice(idx + marker.length) : p;
+}
+
+function truncateToColumns(s: string, max: number): string {
+	if (max <= 0) return "";
+	const width = Bun.stringWidth(s, { countAnsiEscapeCodes: false });
+	if (width <= max) return s;
+	// Cheap right-trim with an ellipsis - we don't need ANSI-aware slicing
+	// because the colored prefix is short and the truncated tail is the
+	// dim filename, where dropping bytes is fine.
+	return `${s.slice(0, Math.max(0, max - 1))}\u2026`;
+}
+
 // =============================================================================
 // Types
 // =============================================================================
@@ -74,8 +126,10 @@ export async function runStatsCommand(cmd: StatsCommandArgs): Promise<void> {
 	);
 
 	// Sync session files first
-	console.log("Syncing session files...");
-	const { processed, files } = await syncAllSessions();
+	const progress = createSyncProgressReporter();
+	process.stderr.write("Syncing session files...\n");
+	const { processed, files } = await syncAllSessions({ onProgress: progress.onProgress });
+	progress.finish();
 	const total = await getTotalMessageCount();
 	console.log(`Synced ${processed} new entries from ${files} files (${total} total)\n`);
 

packages/coding-agent/src/eval/js/worker-core.ts

@@ -503,6 +503,7 @@ function indirectEval(source: string, filename?: string): unknown {
 	const withPragma = filename ? `${source}\n//# sourceURL=${filename}` : source;
 	// Read `eval` via a property access so the call site is *indirect* (global scope),
 	// not direct (this function's lexical scope). The cast erases the lib.dom return type.
+	// biome-ignore lint/security/noGlobalEval: indirect eval is intentional for sandbox execution
 	const geval = globalThis.eval as (src: string) => unknown;
 	return geval(withPragma);
 }