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 NotFound.tsx
+ * @description Catch-all route for unknown paths (`path="*"` in {@link App}).
+ * Presents a friendly 404 card with translated copy and two recovery actions:
+ * navigate home (dashboard) or go back one history entry.
+ *
+ * Uses the `errors` i18n namespace (`notFound.*` keys) so the page stays
+ * localized without hard-coded English strings.
+ *
+ * @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`.
+ *
+ * ## Public surface
+ * - `NotFound` — 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).
+ * -----------------------------------------------------------------------------
+ * **NotFound**
+ *   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 { useNavigate } from "react-router-dom";
+import { useTranslation } from "react-i18next";
+import { AlertTriangle, ArrowLeft, Home } from "lucide-react";
+
+/**
+ * 404 page rendered for unmatched routes.
+ * @returns Centered error card with navigation actions.
+ */
+export function NotFound() {
+  const navigate = useNavigate();
+  const { t } = useTranslation("errors");
+
+  return (
+    <div className="min-h-[calc(100vh-4rem)] flex items-center justify-center animate-fade-in">
+      <div className="card max-w-xl w-full p-8 md:p-10 text-center">
+        <div className="w-14 h-14 mx-auto mb-5 rounded-xl bg-accent/15 border border-accent/25 flex items-center justify-center">
+          <AlertTriangle className="w-7 h-7 text-accent" />
+        </div>
+
+        <p className="text-xs uppercase tracking-[0.18em] text-gray-500 mb-2">
+          {t("notFound.code")}
+        </p>
+        <h2 className="text-2xl font-semibold text-gray-100 mb-2">{t("notFound.title")}</h2>
+        <p className="text-sm text-gray-400 mb-8">{t("notFound.description")}</p>
+
+        <div className="flex flex-col sm:flex-row gap-3 justify-center">
+          <button className="btn-primary" onClick={() => navigate("/")}>
+            <Home className="w-4 h-4" />
+            {t("notFound.goDashboard")}
+          </button>
+          <button
+            className="btn-ghost border border-border hover:border-border-light"
+            onClick={() => navigate(-1)}
+          >
+            <ArrowLeft className="w-4 h-4" />
+            {t("notFound.goBack")}
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}