`, 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

[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_346":347,"_348":349},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":-7,"_18":19,"_17":-7,"_261":-5,"_20":262,"_22":263,"_264":265,"_266":267,"_26":268,"_24":269,"_270":-5,"_271":-5,"_272":52,"_273":274,"_275":43,"_276":-5,"_277":-5,"_278":279},"routes/_app.x.$handle.$name.code.$",{"_11":12,"_13":14,"_15":16,"_17":-7,"_18":19,"_20":21,"_22":23,"_24":25,"_26":27,"_28":-5,"_29":-5,"_30":-5,"_31":-5,"_32":-5},"handle","agentia","name","aion-evolution","branchName","main","version","path","index.ts","project",{"_33":203,"_13":14,"_44":204,"_205":-5,"_206":52,"_207":208,"_209":208,"_210":211,"_212":-5,"_213":214,"_215":36,"_216":43,"_217":-5,"_218":-5,"_219":68,"_220":221,"_222":223,"_224":225,"_226":227,"_228":-5,"_229":230,"_231":230,"_232":233,"_234":233,"_235":233,"_236":230,"_237":230,"_238":239,"_240":241,"_242":243,"_244":52},"tree",[55,56,57,58],"file",{"_33":34,"_13":19,"_35":36,"_37":-5,"_38":39,"_40":41,"_42":43,"_44":45,"_17":46,"_47":48,"_49":50,"_51":52,"_53":-5,"_18":54},"contents",[],"upstream","pull","ahead","behind","envVars","id","2fc2a397-fe8c-4046-8ea8-948ae0187cf5","fileId","01a09047-131c-7786-a391-4376117feaf1","parentId","branchId","37762a14-d77d-4462-8efc-7ba413421494","branchVersion",63,"latest",true,"createdAt",["D",1789383926573],12,"fileType","http","content","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { blob } from \"https://esm.town/v/std/blob/main.ts\";\nimport { Root } from \"./frontend/root.tsx\";\n\nconst app=new Hono();\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS aion_state(device TEXT PRIMARY KEY, studio TEXT NOT NULL DEFAULT '{}', cut TEXT NOT NULL DEFAULT '{}', work TEXT NOT NULL DEFAULT '{}', files TEXT NOT NULL DEFAULT '[]', updated_at TEXT NOT NULL)`);\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS aion_files(id TEXT PRIMARY KEY, device TEXT NOT NULL, name TEXT NOT NULL, type TEXT, size INTEGER, blob_key TEXT NOT NULL, created_at TEXT NOT NULL)`);\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS aion_app_state(device TEXT NOT NULL, app TEXT NOT NULL, data TEXT NOT NULL, updated_at TEXT NOT NULL, PRIMARY KEY(device,app))`);\n\nfunction device(c:any){const d=(c.req.query(\"device\")||c.req.header(\"x-aion-device\")||\"\").trim();return /^[A-Za-z0-9_-]{8,80}$/.test(d)?d:null}\napp.get(\"/\",c=>c.html(Root()));\napp.get(\"/__immutable/*\",c=>serveImmutableFile(c.req.path));\napp.get(\"/source\",c=>c.redirect(parseVal().links.self.val));\n\napp.get(\"/api/state\",async c=>{const d=device(c);if(!d)return c.json({error:\"invalid_device\"},400);const r=await sqlite.execute({sql:\"SELECT * FROM aion_state WHERE device=?\",args:[d]});const row=r.rows[0] as any;if(!row)return c.json({studio:{},cut:{},work:{},files:[]});return c.json({studio:JSON.parse(String(row.studio)),cut:JSON.parse(String(row.cut)),work:JSON.parse(String(row.work)),files:JSON.parse(String(row.files))})});\napp.put(\"/api/state/:section\",async c=>{const d=device(c),section=c.req.param(\"section\");if(!d||![\"studio\",\"cut\",\"work\",\"files\"].includes(section))return c.json({error:\"invalid_request\"},400);const body=await c.req.json();const now=new Date().toISOString();await sqlite.execute({sql:\"INSERT OR IGNORE INTO aion_state(device,updated_at) VALUES(?,?)\",args:[d,now]});await sqlite.execute({sql:`UPDATE aion_state SET ${section}=?, updated_at=? WHERE device=?`,args:[JSON.stringify(body),now,d]});return c.json({ok:true,updatedAt:now})});\n\napp.get(\"/api/files\",async c=>{const d=device(c);if(!d)return c.json({error:\"invalid_device\"},400);const r=await sqlite.execute({sql:\"SELECT id,name,type,size,created_at FROM aion_files WHERE device=? ORDER BY created_at DESC\",args:[d]});return c.json({items:r.rows})});\napp.post(\"/api/files\",async c=>{const d=device(c);if(!d)return c.json({error:\"invalid_device\"},400);const f=await c.req.formData();const file=f.get(\"file\");if(!(file instanceof File)||file.size>5_000_000)return c.json({error:\"invalid_file\"},400);const id=crypto.randomUUID(),key=`files/${d}/${id}/${file.name.replace(/[^A-Za-z0-9._-]/g,\"_\")}`;await blob.set(key,await file.arrayBuffer());await sqlite.execute({sql:\"INSERT INTO aion_files(id,device,name,type,size,blob_key,created_at) VALUES(?,?,?,?,?,?,?)\",args:[id,d,file.name,file.type,file.size,key,new Date().toISOString()]});return c.json({ok:true,id})});\napp.get(\"/api/files/:id\",async c=>{const d=device(c);if(!d)return c.json({error:\"invalid_device\"},400);const r=await sqlite.execute({sql:\"SELECT * FROM aion_files WHERE id=? AND device=?\",args:[c.req.param(\"id\"),d]});const row=r.rows[0] as any;if(!row)return c.json({error:\"not_found\"},404);const res=await blob.get(String(row.blob_key));return new Response(res.body,{headers:{\"content-type\":String(row.type||\"application/octet-stream\"),\"content-disposition\":`attachment; filename=\"${String(row.name).replace(/\"/g,\"\")}\"`}})});\napp.get(\"/api/assets/:id\",async c=>{const d=device(c);if(!d)return c.json({error:\"invalid_device\"},400);const r=await sqlite.execute({sql:\"SELECT * FROM aion_files WHERE id=? AND device=?\",args:[c.req.param(\"id\"),d]});const row=r.rows[0] as any;if(!row)return c.json({error:\"not_found\"},404);const res=await blob.get(String(row.blob_key));return new Response(res.body,{headers:{\"content-type\":String(row.type||\"application/octet-stream\"),\"cache-control\":\"private, max-age=3600\",\"content-disposition\":\"inline\"}})});\napp.delete(\"/api/files/:id\",async c=>{const d=device(c);if(!d)return c.json({error:\"invalid_device\"},400);const r=await sqlite.execute({sql:\"SELECT blob_key FROM aion_files WHERE id=? AND device=?\",args:[c.req.param(\"id\"),d]});const row=r.rows[0] as any;if(!row)return c.json({error:\"not_found\"},404);await blob.delete(String(row.blob_key));await sqlite.execute({sql:\"DELETE FROM aion_files WHERE id=? AND device=?\",args:[c.req.param(\"id\"),d]});return c.json({ok:true})});\n\napp.get(\"/api/apps/:app\",async c=>{const d=device(c),name=c.req.param(\"app\");if(!d||![\"talk\",\"flow\",\"mail\",\"meet\",\"view\",\"sound\",\"web\",\"learn\",\"atlas\",\"play\",\"store\",\"tasks\"].includes(name))return c.json({error:\"invalid_request\"},400);const r=await sqlite.execute({sql:\"SELECT data FROM aion_app_state WHERE device=? AND app=?\",args:[d,name]});return c.json({data:r.rows[0]?JSON.parse(String((r.rows[0] as any).data)):null})});\napp.put(\"/api/apps/:app\",async c=>{const d=device(c),name=c.req.param(\"app\");if(!d||![\"talk\",\"flow\",\"mail\",\"meet\",\"view\",\"sound\",\"web\",\"learn\",\"atlas\",\"play\",\"store\",\"tasks\"].includes(name))return c.json({error:\"invalid_request\"},400);const data=await c.req.json(),now=new Date().toISOString();await sqlite.execute({sql:\"INSERT INTO aion_app_state(device,app,data,updated_at) VALUES(?,?,?,?) ON CONFLICT(device,app) DO UPDATE SET data=excluded.data,updated_at=excluded.updated_at\",args:[d,name,JSON.stringify(data),now]});return c.json({ok:true,updatedAt:now})});\napp.post(\"/api/studio-ai\",async c=>{const d=device(c);if(!d)return c.json({error:\"invalid_device\"},400);const body=await c.req.json() as any;const kind=String(body.kind||\"route\"),prompt=String(body.prompt||\"\").trim().slice(0,3000),text=String(body.text||\"\").slice(0,5000);if(!prompt)return c.json({error:\"prompt_required\"},400);const session=(\"oso-\"+d.replace(/[^A-Za-z0-9-]/g,\"\").slice(0,40)).padEnd(12,\"0\");let instruction=\"\";if(kind===\"route\")instruction=`Clasifica la orden del usuario para un editor gráfico. Devuelve SOLO uno de estos tokens exactos: premium, minimal, brand, story, square, landscape, banner, enhance, product_crop, portrait_crop, shorten_text, cta, headline, qa_fix, center, remove_background, extract_subject. Orden: ${prompt}`;else instruction=`Actúa como editor de copy dentro de OSO Studio. ${prompt}. Devuelve SOLO el texto final, sin comillas, explicación ni markdown. Texto original: ${text}`;try{const r=await fetch(\"https://aion-cloud-os-wj15xf.v2.appdeploy.ai/api/assist\",{method:\"POST\",headers:{\"content-type\":\"application/json\"},body:JSON.stringify({session,mode:\"studio\",prompt:instruction})});if(!r.ok){const raw=await r.text();return c.json({ok:false,error:\"ai_upstream\",upstreamStatus:r.status,detail:raw.slice(0,500)})}const data=await r.json() as any;return c.json({ok:true,text:String(data.text||\"\").trim()})}catch(e){return c.json({ok:false,error:\"ai_unavailable\",detail:String(e).slice(0,300)})}});\napp.get(\"/api/studio-ai/health\",async c=>{try{const r=await fetch(\"https://aion-cloud-os-wj15xf.v2.appdeploy.ai/api/_healthcheck\");return c.json({ok:r.ok,upstream:r.status})}catch{return c.json({ok:false},503)}});\napp.get(\"/api/health\",c=>c.json({ok:true,apps:[\"studio\",\"cut\",\"work\",\"files\",\"talk\",\"flow\",\"mail\",\"meet\",\"view\",\"sound\",\"web\",\"learn\",\"atlas\",\"play\",\"store\",\"tasks\"],studioIntelligence:\"local-tools\",imageAI:\"browser-local\",remoteTextAI:\"fallback-only\",runtime:\"Val Town\"}));\napp.onError(err=>Promise.reject(err));\nexport default app.fetch;","deleted",false,"label",[19],{"_33":79,"_13":80,"_35":81,"_37":-5,"_38":39,"_40":66,"_42":43,"_44":82,"_17":68,"_47":83,"_49":-5,"_51":52,"_53":-5,"_60":84,"_18":85},{"_33":72,"_13":73,"_35":74,"_37":-5,"_38":39,"_40":66,"_42":43,"_44":75,"_17":68,"_47":24,"_49":76,"_51":52,"_53":-5,"_60":77,"_18":78},{"_33":63,"_13":64,"_35":65,"_37":-5,"_38":39,"_40":66,"_42":43,"_44":67,"_17":68,"_47":24,"_49":69,"_51":52,"_53":-5,"_60":70,"_18":71},{"_33":34,"_13":19,"_35":36,"_37":-5,"_38":39,"_40":41,"_42":43,"_44":59,"_17":46,"_47":48,"_49":50,"_51":52,"_53":-5,"_60":61,"_18":62},["D",1789383926573],"children",[],[19],"bdfa25dc-c360-4e99-ba59-550e011b968a","README.md","01a09047-131c-7786-a391-3c9e634e5a4c",1,["D",1789126972111],0,"# 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",[],[64],"2dd9c3d1-03f8-49b4-aa56-18e40e5abb4b","CHANGELOG.md","01a09047-131c-7786-a391-38204a3a8bf0",["D",1789126972111],"# 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