feat: Claude Code Monitor — lanes, pipelines and a merged workspace

Internal SmartGift build of a Claude Code monitoring dashboard. Lanes: a durable unit of parallel agent work, one per working directory, tracked across session restarts. Managed lanes are git worktrees the dashboard provisions and can reset or remove behind a three-check destroy guard and a counted preflight; adopted lanes are directories you already own and are never destroyable. Pipelines: a lane moves through pipeline stages. A stage the agent declares with evidence renders green; a stage inferred from the tool-event stream renders dashed amber and never counts as done. Detection is forward-only within a 30-minute window, and never writes the declared stage. Workspace: one page at /run with a lane grid, the selected lane's pipeline, and a full Claude console behind a disclosure.
2026-07-29 17:07:45 +07:00
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+/**
+ * @file StatCard.tsx
+ * @description Compact metric tile for dashboard and analytics grids. Shows a
+ * label, large formatted value, Lucide icon, and optional trend suffix. When
+ * the displayed value is abbreviated (e.g. "1.2k"), pass the full precision
+ * string via `raw` so {@link Tip} can reveal it on hover.
+ *
+ * ## Loading state
+ * Set `loading` while fetching so the card renders {@link StatValueSkeleton}
+ * instead of flashing placeholder dashes or zeros before real data arrives.
+ *
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+/* =============================================================================
+ * MODULE_GUIDE — extended in-file reference (comments only; safe to read, never executed)
+ * =============================================================================
+ * **Purpose:** Dashboard module consumed by the React client, MCP tools, or desktop shell depending on deployment mode.
+ *
+ * ## Design constraints
+ * - Local-first: no telemetry leaves the machine unless the user configures webhooks.
+ * - Fail-safe hooks path on the server must never block Claude Code; UI mirrors that
+ *   philosophy by degrading gracefully (empty states, stale badges, reconnect loops).
+ * - Destructive flows stay behind explicit confirmation modals and server-side gates.
+ * - Internationalization: user-visible strings belong in i18n JSON, not literals here.
+ *
+ * ## Remote data & SSH
+ * Remote Data Sources let operators aggregate multiple machines. SSH entries describe
+ * how to reach a peer dashboard; the global data scope (`dataScope.ts`) narrows every
+ * scoped GET via `?sources=`. Health checks and import history surface in Settings.
+ *
+ * ## Observability
+ * Prometheus scrapes `GET /api/metrics` (see `monitoring/`). Grafana ships four
+ * provisioned boards (overview, sessions, tools, alerts). Native npm scripts and
+ * Docker Compose profiles are documented in `monitoring/README.md`.
+ *
+ * ## Internal dependencies
+ * - `./Tip`
+ * - `./Skeleton`
+ *
+ * ## Public surface
+ * - `StatCard` — exported API; see TSDoc on the symbol for behavior.
+ *
+ * ## Testing pointers
+ * - Prefer colocated `__tests__` with Vitest + Testing Library for UI.
+ * - Server contract changes require `npm run test:server` and OpenAPI sync.
+ * - MCP edits: `npm run mcp:typecheck` and `npm run mcp:build`.
+ *
+ * ## Related docs
+ * - `ARCHITECTURE.md` — hooks → API → SQLite → WebSocket → UI pipeline.
+ * - `docs/API.md` — REST reference.
+ * - `.claude/skills/file-headers/` — mandatory `@author` header policy.
+ * ============================================================================= */
+/* -----------------------------------------------------------------------------
+ * EXPORT CATALOG — quick index of symbols defined below (documentation only).
+ * -----------------------------------------------------------------------------
+ * **StatCard**
+ *   Part of this module's public contract. Downstream imports should treat
+ *   the signature and return type as stable unless release notes say otherwise.
+ *   When behavior changes, update the `@file` overview and relevant tests.
+ *
+ * ----------------------------------------------------------------------------- */
+
+import type { LucideIcon } from "lucide-react";
+import { Tip } from "./Tip";
+import { StatValueSkeleton } from "./Skeleton";
+
+/** Props for {@link StatCard}. */
+interface StatCardProps {
+  /** Uppercase label above the value (usually a translated metric name). */
+  label: string;
+  /** Primary metric — pre-formatted by the caller. */
+  value: string | number;
+  /** Decorative icon in the card header. */
+  icon: LucideIcon;
+  /** Optional secondary line (e.g. "+12% vs last week"). */
+  trend?: string;
+  /** Tailwind text-color class for the icon. Defaults to `text-accent`. */
+  accentColor?: string;
+  /** Full-precision value shown in the hover tooltip when `value` is abbreviated. */
+  raw?: string;
+  /** When true, render skeletons in place of value/trend. */
+  loading?: boolean;
+}
+
+/**
+ * Renders a single statistic inside the shared `card` chrome.
+ * @param props See {@link StatCardProps}.
+ */
+export function StatCard({
+  label,
+  value,
+  icon: Icon,
+  trend,
+  accentColor = "text-accent",
+  raw,
+  loading = false,
+}: StatCardProps) {
+  return (
+    <div className="card p-5">
+      <div className="flex items-center justify-between gap-3 mb-3">
+        <span className="text-xs font-medium text-gray-500 uppercase tracking-wider truncate">
+          {label}
+        </span>
+        <Icon className={`w-5 h-5 flex-shrink-0 ${accentColor}`} />
+      </div>
+      <div className="flex items-end gap-2 min-w-0">
+        {loading ? (
+          <StatValueSkeleton />
+        ) : (
+          <Tip raw={raw}>
+            <span className="text-2xl font-semibold text-gray-100 truncate">{value}</span>
+          </Tip>
+        )}
+        {!loading && trend && (
+          <span className="text-xs text-gray-500 mb-1 flex-shrink-0">{trend}</span>
+        )}
+      </div>
+    </div>
+  );
+}