feat: consolidated and automate changelog management

- Added `rewrite-changelog.ts` and `fix-changelogs.ts` utilities to automate the consolidation of release notes using LLM-assisted processing.
- Updated multiple internal changelog files by consolidating redundant entries and improving phrasing for readability.
- Implemented `previewLine` utility in `coding-agent` to prevent visual spillover in status rows by managing text truncation and whitespace.
- Updated `package.json` with new workflow scripts for managing package-level change histories and documentation indexes.

packages/coding-agent/src/export/html/index.ts

@@ -9,7 +9,7 @@ import { SessionManager } from "../../session/session-manager";
 import templateCss from "./template.css" with { type: "text" };
 import templateHtml from "./template.html" with { type: "text" };
 import templateJs from "./template.js" with { type: "text" };
-// Pre-built React tool renderers: built by `bun --cwd=packages/collab-web run build:tool-views`,
+// Pre-built React tool renderers: built by `gen:tool-views` (`bun run gen:tool-views`),
 // run automatically by root `prepare` on install and by `prepack` at publish.
 import toolViewsJs from "./tool-views.generated.js" with { type: "text" };
 import { webExportThemeVars } from "./web-palette";

packages/coding-agent/src/internal-urls/docs-index.ts

@@ -2,8 +2,7 @@
  * Harness documentation index for the `omp://` protocol.
  *
  * Compiled binaries and the prepacked npm bundle inline a compressed index from
- * `docs-index.generated.txt` (populated by `scripts/generate-docs-index.ts
- * --generate` at build time). The format is two lines:
+ * `docs-index.generated.txt` (populated by `gen:docs` at build time). The format is two lines:
  *   1. a plain JSON array of the sorted doc file names, and
  *   2. a base64 gzip blob of the index-aligned doc bodies (`string[]`).
  * Listing/completion (`getDocFilenames`) parses only the small first line and
@@ -84,7 +83,7 @@ function getIndex(): DocsIndex {
 	if (decoded === null) {
 		throw new Error(
 			"Malformed embedded docs index (docs-index.generated.txt): non-empty payload without a newline separator. " +
-				"Rebuild with `bun --cwd=packages/coding-agent scripts/generate-docs-index.ts --generate`.",
+				"Rebuild with `bun run gen:docs`.",
 		);
 	}
 	index = decoded;

packages/coding-agent/src/task/render.ts

@@ -18,6 +18,7 @@ import {
 	formatExpandHint,
 	formatMoreItems,
 	formatStatusIcon,
+	previewLine,
 	replaceTabs,
 	type ToolUIStatus,
 	truncateToWidth,
@@ -749,7 +750,7 @@ function renderAgentProgress(
 	const showBadge = settings.get("task.showResolvedModelBadge");
 	if (progress.status === "running") {
 		if (!description) {
-			const taskPreview = truncateToWidth(progress.assignment ?? progress.task, 40);
+			const taskPreview = previewLine(progress.assignment ?? progress.task, 40);
 			statusLine += ` ${theme.fg("muted", taskPreview)}`;
 		}
 		statusLine = appendAgentStats(statusLine, { ...progress, showResolvedModelBadge: showBadge }, theme);
@@ -767,7 +768,7 @@ function renderAgentProgress(
 			let toolLine = `${continuePrefix}${theme.tree.hook} ${theme.fg("muted", progress.currentTool)}`;
 			const toolDetail = progress.lastIntent ?? progress.currentToolArgs;
 			if (toolDetail) {
-				toolLine += `: ${theme.fg("dim", truncateToWidth(replaceTabs(toolDetail), 40))}`;
+				toolLine += `: ${theme.fg("dim", previewLine(toolDetail, 40))}`;
 			}
 			if (progress.currentToolStartMs) {
 				const elapsed = Date.now() - progress.currentToolStartMs;
@@ -782,7 +783,7 @@ function renderAgentProgress(
 			let toolLine = `${continuePrefix}${theme.tree.hook} ${theme.fg("dim", recent.tool)}`;
 			const toolDetail = progress.lastIntent ?? recent.args;
 			if (toolDetail) {
-				toolLine += `: ${theme.fg("dim", truncateToWidth(replaceTabs(toolDetail), 40))}`;
+				toolLine += `: ${theme.fg("dim", previewLine(toolDetail, 40))}`;
 			}
 			lines.push(toolLine);
 		}
@@ -796,12 +797,12 @@ function renderAgentProgress(
 		const waitLabel = remainingMs > 0 ? `in ${formatDuration(remainingMs)}` : "now";
 		const summary =
 			`retrying ${progress.retryState.attempt}/${progress.retryState.maxAttempts} ${waitLabel}: ` +
-			truncateToWidth(replaceTabs(progress.retryState.errorMessage), 60);
+			previewLine(progress.retryState.errorMessage, 60);
 		lines.push(`${continuePrefix}${theme.tree.hook} ${theme.fg("warning", summary)}`);
 	} else if (progress.retryFailure && progress.status !== "running") {
 		const summary = `auto-retry gave up after ${progress.retryFailure.attempt} attempt${
 			progress.retryFailure.attempt === 1 ? "" : "s"
-		}: ${truncateToWidth(replaceTabs(progress.retryFailure.errorMessage), 80)}`;
+		}: ${previewLine(progress.retryFailure.errorMessage, 80)}`;
 		lines.push(`${continuePrefix}${theme.tree.hook} ${theme.fg("error", summary)}`);
 	}
 
@@ -1064,7 +1065,7 @@ function renderAgentResult(
 
 	if (aborted && result.abortReason) {
 		lines.push(
-			`${continuePrefix}${theme.fg("error", theme.status.aborted)} ${theme.fg("dim", truncateToWidth(replaceTabs(result.abortReason), 80))}`,
+			`${continuePrefix}${theme.fg("error", theme.status.aborted)} ${theme.fg("dim", previewLine(result.abortReason, 80))}`,
 		);
 	}
 	// Check for review result (yield with review schema + report_finding)
@@ -1176,9 +1177,7 @@ function renderAgentResult(
 
 	// Error message
 	if (result.error && (!success || mergeFailed) && (!aborted || result.error !== result.abortReason)) {
-		lines.push(
-			`${continuePrefix}${theme.fg(mergeFailed ? "warning" : "error", truncateToWidth(replaceTabs(result.error), 70))}`,
-		);
+		lines.push(`${continuePrefix}${theme.fg(mergeFailed ? "warning" : "error", previewLine(result.error, 70))}`);
 	}
 
 	return lines;

packages/coding-agent/src/tools/render-utils.ts

@@ -99,6 +99,17 @@ export function getPreviewLines(text: string, maxLines: number, maxLineLen: numb
 	return lines.slice(0, maxLines).map(l => truncateToWidth(l.trim(), maxLineLen, ellipsis));
 }
 
+/**
+ * Collapse a possibly multi-line string into a single line, then truncate it to
+ * `maxWidth` display cells. {@link truncateToWidth} alone caps width but
+ * newlines are zero-width, so multi-line content (markdown briefs, tool args,
+ * provider errors) would otherwise spill a single status row across several
+ * visual lines. Whitespace runs collapse to one space, so tabs are handled too.
+ */
+export function previewLine(text: string, maxWidth: number, ellipsis?: Ellipsis): string {
+	return truncateToWidth(text.replace(/\s+/g, " ").trim(), maxWidth, ellipsis);
+}
+
 // =============================================================================
 // URL Utilities
 // =============================================================================