`, favicon, and body of `Root()` to\nmatch your app's existing `index.html`, and stamp anything else your shell\nreferences directly (images, css) with `immutableFileUrl()`.\n\n1. Create `frontend/root.tsx`:\n\n```tsx\n/** @jsxImportSource npm:hono@4/jsx */\nimport { raw } from \"npm:hono@4/html\";\nimport { immutableFileUrl } from \"https://esm.town/v/std/utils/index.ts\";\n\n// The HTML shell for the app. It is never cached, so immutableFileUrl can stamp\n// the current val version into each asset URL — the browser caches those\n// immutably, and publishing the val changes the URLs, refetching exactly once.\nexport function Root() {\n return (\n <>\n {raw(\"<!DOCTYPE html>\")}\n <html lang=\"en\">\n <head>\n <meta charSet=\"UTF-8\" />\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n <title>React Hono Val Town Starter

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\n  ),\n  code: ({ className, children, ...p }: { className?: string; children?: unknown }) => {\n    const block = /language-/.test(className ?? \"\") || String(children).includes(\"\\n\");\n    if (block) {\n      return {children};\n    }\n    return (\n      \n        {children}\n      \n    );\n  },\n};\n\nexport function Markdown({ text }: { text: string }) {\n  return (\n    \n      \n        {text}\n      \n    
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\n  );\n}\n","createdAt",["D",1787386755629],"branchVersion","branchId","6924747a-bd7f-44f6-8ed7-64b4b4bc8bc0","id","97ce4900-8329-43bb-b758-880f88637a91","cursor-chat",["D",1787382471418],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Mobile chat relay to Cursor + Val Town","imageUrl","96c2793d-57c8-41d2-a49a-d1ee82f9dd24","pinnedFileId","01a0284c-1b46-711a-b263-211c80180a34","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","93515af8-c7b7-459c-9bf2-3bb3df310a75","tursoName","97ce4900832943bbb758880f88637a91","tursoHostname","97ce4900832943bbb758880f88637a91-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789474853273],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_101":100,"_108":104},"org",{"_101":100,"_102":-5,"_103":104,"_18":56,"_105":106,"_107":25},"branch",{"_13":90,"_32":91,"_44":43,"_92":45,"_93":-5,"_94":-5,"_95":-5,"_96":-5,"_97":-5,"_98":46,"_99":100},"isOwned",376,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","yuxiaoy","handle","displayName","avatar","https://img.clerk.com/eyJ0eXBlIjoiZGVmYXVsdCIsImlpZCI6Imluc18yTm10cGhQUklwU0tqZHNiOHNnNGd2ZjJURFUiLCJyaWQiOiJ1c2VyXzJObXd1QWdCZmVtaUh0bGU5TkswOG1sM0xheiIsImluaXRpYWxzIjoiRlkifQ","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_44":45,"_32":46,"_39":351,"_48":-5,"_49":25,"_50":51,"_52":51,"_53":54,"_55":-5,"_18":56,"_57":58,"_59":60,"_61":-5,"_62":-5,"_63":64,"_65":66,"_67":68,"_69":70,"_71":352,"_73":-5,"_74":75,"_76":75,"_77":78,"_79":78,"_80":78,"_81":75,"_82":75,"_83":353,"_85":354,"_87":355,"_89":25},"tree",[182,188,201,202,203],"files",[182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203],"counts",{"_172":64,"_173":150,"_174":64,"_175":176,"_177":178},"contents",[131,132,133,134,135],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_44":166,"_32":167,"_30":168,"_138":-5,"_42":43,"_41":169,"_140":60,"_39":170,"_13":64,"_34":164,"_36":-5,"_24":25,"_145":-5,"_27":171},{"_44":160,"_32":161,"_30":162,"_138":-5,"_42":43,"_41":150,"_140":60,"_39":163,"_13":64,"_34":164,"_36":-5,"_24":25,"_145":-5,"_27":165},{"_44":154,"_32":155,"_30":156,"_138":-5,"_42":43,"_41":150,"_140":25,"_39":157,"_13":64,"_34":20,"_36":158,"_24":25,"_145":-5,"_27":159},{"_44":147,"_32":148,"_30":149,"_138":-5,"_42":43,"_41":150,"_140":25,"_39":151,"_13":64,"_34":20,"_36":152,"_24":25,"_145":-5,"_27":153},{"_44":136,"_32":137,"_30":58,"_138":-5,"_42":43,"_41":139,"_140":25,"_39":141,"_13":142,"_34":143,"_36":144,"_24":25,"_145":-5,"_27":146},"3ef7ff6e-e29b-47b4-af06-58aae3289fe0","index.ts","parentId",49,"latest",["D",1787385012320],10,"http","import { parseVal, serveFile, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\nimport { Root } from \"./frontend/root.tsx\";\nimport { isAuthed, isConfigured, loginCookie, logoutCookie } from \"./backend/auth.ts\";\nimport { archiveAgent, cancelRun, getRun, listAgents, listModels, recover, startChat } from \"./backend/cursor.ts\";\nimport { addMessage, deleteChat, initDb, listLocalChats, listMessages, upsertChat } from \"./backend/db.ts\";\nimport { renderIconPng } from \"./backend/icon.ts\";\n\nconst app = new Hono();\nconst iconCache = new Map();\n\nasync function iconPng(size: number) {\n  let png = iconCache.get(size);\n  if (!png) {\n    png = renderIconPng(size);\n    iconCache.set(size, png);\n  }\n  return new Response(png, {\n    headers: {\n      \"Content-Type\": \"image/png\",\n      \"Cache-Control\": \"public, max-age=86400\",\n    },\n  });\n}\n\napp.get(\"/\", (c) => c.html(Root()));\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\napp.get(\"/apple-touch-icon.png\", () => iconPng(180));\napp.get(\"/icon-512.png\", () => iconPng(512));\napp.get(\"/manifest.webmanifest\", async () => {\n  const res = await serveFile(\"/frontend/manifest.webmanifest\");\n  return new Response(res.body, {\n    headers: {\n      \"Content-Type\": \"application/manifest+json\",\n      \"Cache-Control\": \"no-cache\",\n    },\n  });\n});\napp.get(\"/sw.js\", async () => {\n  const res = await serveFile(\"/frontend/sw.js\");\n  return new Response(res.body, {\n    headers: {\n      \"Content-Type\": \"text/javascript; charset=utf-8\",\n      \"Cache-Control\": \"no-cache\",\n      \"Service-Worker-Allowed\": \"/\",\n    },\n  });\n});\n\nasync function requireUser(c: { req: { raw: Request } }) {\n  if (!isConfigured()) return { error: \"先配置 CURSOR_API_KEY 和 APP_PASSWORD\", status: 503 as const };\n  if (!await isAuthed(c.req.raw)) return { error: \"未登录\", status: 401 as const };\n  return null;\n}\n\napp.get(\"/api/status\", async (c) => {\n  return c.json({\n    configured: isConfigured(),\n    authed: await isAuthed(c.req.raw),\n  });\n});\n\napp.post(\"/api/login\", async (c) => {\n  const body = await c.req.json().catch(() => ({}));\n  const cookie = await loginCookie(String(body.password ?? \"\"));\n  if (!cookie) return c.json({ error: \"密码错误或未配置 APP_PASSWORD\" }, 401);\n  c.header(\"Set-Cookie\", cookie);\n  return c.json({ ok: true });\n});\n\napp.post(\"/api/logout\", (c) => {\n  c.header(\"Set-Cookie\", logoutCookie());\n  return c.json({ ok: true });\n});\n\napp.get(\"/api/models\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  try {\n    return c.json({ items: await listModels() });\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.get(\"/api/chats\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  try {\n    await initDb();\n    const [remote, local] = await Promise.all([listAgents(), listLocalChats()]);\n    const localMap = new Map(local.map((row) => [row.agent_id, row]));\n    const items = remote.map((agent) => {\n      const row = localMap.get(agent.id);\n      return {\n        id: agent.id,\n        title: row?.title || agent.name || \"未命名对话\",\n        status: agent.status,\n        updatedAt: row?.updated_at || agent.updatedAt || agent.createdAt,\n        model: row?.model,\n        mode: row?.mode || \"agent\",\n        url: agent.url,\n      };\n    });\n    return c.json({ items });\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.get(\"/api/chats/:agentId/messages\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  try {\n    const items = await listMessages(c.req.param(\"agentId\"));\n    return c.json({ items });\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.delete(\"/api/chats/:agentId\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  const agentId = c.req.param(\"agentId\");\n  try {\n    await archiveAgent(agentId).catch(() => undefined);\n    await deleteChat(agentId);\n    return c.json({ ok: true });\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.post(\"/api/messages\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  const body = await c.req.json().catch(() => ({}));\n  const agentId = String(body.agentId ?? \"\");\n  const role = String(body.role ?? \"\");\n  const text = String(body.text ?? \"\");\n  if (!agentId || !role || !text) return c.json({ error: \"missing fields\" }, 400);\n  await addMessage(agentId, role, text);\n  if (body.model) await upsertChat(agentId, undefined, String(body.model));\n  return c.json({ ok: true });\n});\n\napp.post(\"/api/chat\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  const body = await c.req.json().catch(() => ({}));\n  const text = String(body.text ?? \"\").trim();\n  if (!text) return c.json({ error: \"请输入内容\" }, 400);\n  const agentId = body.agentId ? String(body.agentId) : undefined;\n  const modelId = body.modelId ? String(body.modelId) : undefined;\n  const mode = body.mode === \"plan\" ? \"plan\" as const : \"agent\" as const;\n  try {\n    const started = await startChat(text, agentId, modelId, mode);\n    if (started.agentId) {\n      await addMessage(started.agentId, \"user\", text);\n      await upsertChat(started.agentId, text.slice(0, 48), modelId, mode);\n    }\n    return c.json(started);\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.get(\"/api/recover\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  const stamp = c.req.query(\"stamp\") ?? \"\";\n  const agentId = c.req.query(\"agentId\") || undefined;\n  if (!stamp && !agentId) return c.json({ error: \"missing stamp\" }, 400);\n  try {\n    return c.json(await recover(stamp, agentId));\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.get(\"/api/run/:agentId/:runId\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  try {\n    const run = await getRun(c.req.param(\"agentId\"), c.req.param(\"runId\"));\n    return c.json(run);\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.post(\"/api/run/:agentId/:runId/cancel\", async (c) => {\n  const denied = await requireUser(c);\n  if (denied) return c.json({ error: denied.error }, denied.status);\n  try {\n    await cancelRun(c.req.param(\"agentId\"), c.req.param(\"runId\"));\n    return c.json({ ok: true });\n  } catch (err) {\n    return c.json({ error: err instanceof Error ? err.message : String(err) }, 502);\n  }\n});\n\napp.onError((err) => Promise.reject(err));\nexport default app.fetch;\n","label",[137],"bec3edd4-de87-44e1-8d87-e30ed84d02f0","README.md","01a0284c-1b46-711a-b263-1e3f3ba9965c",1,["D",1787382471418],"# React + Hono Starter\n\nA minimal starter template for building client-side React apps with a Hono\nbackend on Val Town. Click **Remix** to get your own copy.\n\n## Picking a starter\n\n| Starter | When to pick it |\n| --- | --- |\n| [`basic-html-starter`](https://www.val.town/x/templates/basic-html-starter) | Static HTML pages. Sprinkle of vanilla JS. No server-side rendering. |\n| [`hono-jsx-starter`](https://www.val.town/x/templates/hono-jsx-starter) | Dynamic server-rendered HTML with JSX. API routes. No React, no SPA. |\n| **[`react-hono-starter`](https://www.val.town/x/templates/react-hono-starter)** *(you're here)* | Client-side React SPA with a Hono API backend. |\n\n**Want to build UI?** Start writing React components in\n[`frontend/components/`](/frontend/components/). Import them into `App.tsx` and\nyou're good to go. Styling is [Twind](https://twind.style/) — just use Tailwind\nutility classes, zero config.\n\n**Want to add an API?** Add routes in [`index.ts`](/index.ts) (there's a\ncommented-out example). Fetch them from your React components.\n\n## Architecture\n\n```mermaid\ngraph LR\n    Browser -->|\"GET /\"| Hono[\"index.ts
(Hono server)\"]\n    Hono -->|serves| HTML[\"root.tsx\"]\n    HTML -->|loads| Entry[\"index.tsx\"]\n    Entry -->|renders| App[\"App.tsx\"]\n    App -->|renders| Counter[\"Counter.tsx\"]\n```\n\n## File structure\n\n```\nindex.ts              ← Hono backend (serves frontend + API routes)\nfrontend/\n  root.tsx            ← HTML shell (stamps immutable asset URLs)\n  index.tsx           ← React entrypoint (mounts )\n  favicon.svg         ← App icon\n  components/\n    App.tsx            ← Root component (layout + view source link)\n    Counter.tsx        ← Example component with state\n```\n\n## How it works\n\n1. **`index.ts`** is the HTTP entrypoint — a Hono server that serves the\n   frontend and any API routes you add.\n2. **`frontend/root.tsx`** is the HTML shell — it loads Twind and stamps\n   immutable asset URLs for the favicon and React entrypoint.\n3. **`frontend/index.tsx`** mounts the React app.\n4. **`frontend/components/App.tsx`** is the root layout — add new components\n   alongside it.\n5. **`frontend/components/Counter.tsx`** is an example stateful component —\n   replace it with your own!\n\n## Next steps\n\n- Add API routes in `index.ts`\n- Add new components in `frontend/components/`\n- Add a SQLite database — see the\n  [React Hono Example](https://www.val.town/x/stevekrouse/reactHonoExample) for\n  a full-stack example with database, queries, and shared types\n\nTemplate updates and upgrade paths for existing remixes: [CHANGELOG.md](/CHANGELOG.md)\n",[148],"b5d3d126-3f9f-4e76-9dd6-b57a2130ef32","CHANGELOG.md","01a0284c-1b46-711a-b263-184ef9e69f49",["D",1787382471418],"# Changelog\n\n## 2026-07-30 — Immutable asset caching\n\nFrontend files are now served at version-addressed URLs\n(`/__immutable/45/frontend/index.tsx`) with\n`Cache-Control: public, max-age=31536000, immutable`, so repeat visits load the\nwhole client graph from the browser cache — roughly 3× faster (~665ms → ~157ms\nmeasured). Publishing your val bumps its version, which changes every URL, so\ncaches invalidate automatically. Old-version URLs return 404 after a publish\n(like Next.js build assets); a reload picks up the new version.\n\nWhat changed in the template:\n\n- `frontend/index.html` → [`frontend/root.tsx`](/frontend/root.tsx): the HTML\n  shell is now JSX and stamps asset URLs with `immutableFileUrl()`\n- [`index.ts`](/index.ts): serves `Root()` at `/`, and one\n  `app.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path))` route\n  serves all frontend files\n\n### Upgrading an existing remix\n\nYour copy of this template doesn't update automatically. Two options:\n\n**Minimal (most of the benefit):** point both routes at `serveImmutableFile` —\nyour existing bare URLs redirect into versioned space, the new route serves\nthem, and the whole module graph gets cached (costs one redirect per page view):\n\n```ts\nimport { serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\n\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\napp.get(\"/frontend/**/*\", (c) => serveImmutableFile(c.req.path)); // was serveFile\n```\n\n**Full upgrade (also removes the redirect):** three self-contained steps —\nno other files needed. Adjust the ``, favicon, and body of `Root()` to\nmatch your app's existing `index.html`, and stamp anything else your shell\nreferences directly (images, css) with `immutableFileUrl()`.\n\n1. Create `frontend/root.tsx`:\n\n```tsx\n/** @jsxImportSource npm:hono@4/jsx */\nimport { raw } from \"npm:hono@4/html\";\nimport { immutableFileUrl } from \"https://esm.town/v/std/utils/index.ts\";\n\n// The HTML shell for the app. It is never cached, so immutableFileUrl can stamp\n// the current val version into each asset URL — the browser caches those\n// immutably, and publishing the val changes the URLs, refetching exactly once.\nexport function Root() {\n  return (\n    <>\n      {raw(\"<!DOCTYPE html>\")}\n      <html lang=\"en\">\n        <head>\n          <meta charSet=\"UTF-8\" />\n          <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n          <title>React Hono Val Town Starter\n          `)}\n

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