`, 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",{"_349":350,"_351":352},"routes/_app.x.$handle.$name",{"_105":104,"_37":50,"_114":95,"_32":115,"_13":14,"_116":-5,"_11":117,"_118":119,"_120":121,"_122":123,"_124":125,"_26":-5,"_126":-5,"_127":-5,"_128":30,"_129":130,"_131":64,"_132":-5,"_133":-5,"_134":135},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":18,"_19":-5},"project",{"_48":49,"_37":50,"_43":51,"_52":-5,"_53":30,"_54":55,"_56":55,"_57":58,"_59":-5,"_19":60,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":72,"_73":74,"_75":76,"_77":-5,"_78":79,"_80":79,"_81":82,"_83":82,"_84":82,"_85":79,"_86":79,"_87":88,"_89":90,"_91":92,"_93":30},"version",22,"changes",[25],"aiChatInfo",{"_20":21,"_22":-5,"_23":-5,"_24":-5},"userId","aiChatMessageId","bd6465bb-b051-4a68-a0a8-02253e300879","aiChatThreadId","aiChatThreadUserId","aiChatThreadTitle",{"_26":27,"_28":-7,"_29":30,"_31":30,"_32":33,"_34":33},"file",{"_35":36,"_37":38,"_39":40,"_41":42,"_43":44,"_45":14,"_46":47,"_29":30},"previous","deleted",false,"deletedHere","path","frontend/components/Toolbar.tsx","latestPath","fileId","e316a19e-aa23-11f1-8ef6-1607ee4eb77e","name","Toolbar.tsx","fileType","script","content","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { LEGEND, type CategoryKey, type Highlight } from \"../../types.ts\";\n\nexport function Toolbar({\n caseName,\n citation,\n query,\n onQuery,\n activeCats,\n onToggleCat,\n showOnlyHighlights,\n onToggleOnly,\n onPrev,\n onNext,\n onExport,\n onReset,\n total,\n}: {\n caseName: string;\n citation: string;\n query: string;\n onQuery: (q: string) => void;\n activeCats: CategoryKey[];\n onToggleCat: (k: CategoryKey) => void;\n showOnlyHighlights: boolean;\n onToggleOnly: () => void;\n onPrev: () => void;\n onNext: () => void;\n onExport: () => void;\n onReset: () => void;\n total: number;\n}) {\n return (\n

\n \n ‹\n \n

\n {caseName || \"Judgment\"}\n

{citation}

\n\n

\n \n ↑\n \n \n ↓\n \n {total} highlighted\n

\n\n onQuery(e.target.value)}\n placeholder=\"Search judgment…\"\n aria-label=\"Search judgment\"\n className=\"px-3 py-1.5 rounded-lg bg-white/10 border border-white/20 text-sm placeholder-gray-300 focus:outline-none focus:ring-2 focus:ring-amber-400 w-44\"\n />\n\n \n \n Shows only highlights\n \n\n \n Export\n \n

\n\n

\n {LEGEND.map((l) => {\n const on = activeCats.includes(l.key);\n return (\n onToggleCat(l.key)}\n className={\n \"px-2.5 py-1 rounded-full text-xs font-medium border transition-colors \" +\n (on ? \"text-charcoal\" : \"text-gray-400 border-white/20 hover:border-white/40\")\n }\n style={on ? { background: l.bg, borderColor: l.text } : {}}\n >\n {l.label}\n \n );\n })}\n

\n );\n}\n","createdAt",["D",1788720653558],"branchVersion","branchId","9da8d75d-5b67-4db9-bfe9-96a9f922df07","id","98a438e2-e86c-4387-8e64-73a6f374b982","caselens-canada",["D",1788720339103],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Canadian judgment analyzer, highlights citation-worthy passages","imageUrl","436e5f36-a2ba-4a6a-a643-a30cb32bc6d0","pinnedFileId","01a0780a-5903-77b6-aac8-7b10e8bcd475","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","01a07805-dad2-708b-ba9b-d68c374aef77","tursoName","98a438e2e86c43878e6473a6f374b982","tursoHostname","98a438e2e86c43878e6473a6f374b982-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789504908499],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_105":104,"_113":109},"org",{"_105":104,"_106":107,"_108":109,"_19":60,"_110":111,"_112":30},"branch",{"_13":94,"_37":95,"_48":47,"_96":49,"_97":-5,"_98":-5,"_99":-5,"_100":-5,"_101":-5,"_102":50,"_103":104},"isOwned",28,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","justinstevens","handle","displayName","Justin Stevens","avatar","https://lh3.googleusercontent.com/a/ACg8ocKLKYD-xizVJxt8-uDEezaNk_hNn0G1pUiiV0LSrwEU1mcm1qa4=s96-c","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_48":49,"_37":50,"_43":344,"_52":-5,"_53":30,"_54":55,"_56":55,"_57":58,"_59":-5,"_19":60,"_61":62,"_63":64,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":72,"_73":74,"_75":345,"_77":-5,"_78":79,"_80":79,"_81":82,"_83":82,"_84":82,"_85":79,"_86":79,"_87":346,"_89":347,"_91":348,"_93":30},"tree",[194,206,211,212,213,214],"files",[194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214],"counts",{"_184":68,"_185":162,"_186":68,"_187":188,"_189":190},"contents",[136,137,138,139,140,141],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_48":179,"_37":180,"_35":181,"_145":-5,"_46":47,"_45":162,"_147":64,"_43":182,"_13":68,"_39":177,"_41":-5,"_29":30,"_150":-5,"_32":183},{"_48":172,"_37":173,"_35":174,"_145":-5,"_46":47,"_45":175,"_147":64,"_43":176,"_13":68,"_39":177,"_41":-5,"_29":30,"_150":-5,"_32":178},{"_48":166,"_37":167,"_35":168,"_145":-5,"_46":47,"_45":162,"_147":64,"_43":169,"_13":68,"_39":26,"_41":170,"_29":30,"_150":-5,"_32":171},{"_48":159,"_37":160,"_35":161,"_145":-5,"_46":47,"_45":162,"_147":30,"_43":163,"_13":68,"_39":26,"_41":164,"_29":30,"_150":-5,"_32":165},{"_48":152,"_37":153,"_35":62,"_145":-5,"_46":47,"_45":154,"_147":64,"_43":155,"_13":146,"_39":156,"_41":157,"_29":30,"_150":-5,"_32":158},{"_48":142,"_37":143,"_35":144,"_145":-5,"_46":47,"_45":146,"_147":64,"_43":148,"_13":68,"_39":40,"_41":149,"_29":30,"_150":-5,"_32":151},"9b30d97f-8b98-4c48-9a4d-868ad6d9c5e0","types.ts","49c0a90e-aa23-11f1-8352-1607ee4eb77e","parentId",2,"latest",["D",1788720396299],"/**\n * Shared types for CaseLens Canada — used by both the server pipeline\n * (server/*.ts) and the client SPA (frontend/**).\n */\n\nexport type CategoryKey =\n | \"ratio\"\n | \"rule\"\n | \"application\"\n | \"fact\"\n | \"credibility\"\n | \"procedural\"\n | \"remedy\"\n | \"obiter\"\n | \"definition\";\n\nexport interface LegendEntry {\n key: CategoryKey;\n label: string;\n short: string;\n /** what a lawyer typically calls this kind of passage */\n explanation?: string;\n bg: string; // highlight background (hex)\n text: string; // readable foreground / accent (hex)\n solid: string; // strong accent (hex)\n}\n\n/** The category legend — a single source of truth for filters, colors, labels. */\nexport const LEGEND: LegendEntry[] = [\n { key: \"ratio\", label: \"Ratio / core holding\", short: \"Ratio\", bg: \"#dbeafe\", text: \"#1e3a8a\", solid: \"#2563eb\", explanation: \"Ratio decidendi — the binding principle on which the decision turns.\" },\n { key: \"rule\", label: \"Legal test / governing rule\", short: \"Rule / test\", bg: \"#e0e7ff\", text: \"#3730a3\", solid: \"#4f46e5\", explanation: \"A statement of a legal test, standard, or rule the court applies.\" },\n { key: \"application\", label: \"Application / reasoning\", short: \"Application\", bg: \"#ccfbf1\", text: \"#115e59\", solid: \"#0d9488\", explanation: \"Reasoning applying the law to the facts of the case.\" },\n { key: \"fact\", label: \"Key factual finding\", short: \"Finding of fact\", bg: \"#fef3c7\", text: \"#92400e\", solid: \"#d97706\", explanation: \"An established or asserted fact the court relies on.\" },\n { key: \"credibility\", label: \"Credibility / evidentiary finding\", short: \"Credibility\", bg: \"#ffedd5\", text: \"#9a3412\", solid: \"#ea580c\", explanation: \"A determination about reliability, credibility, or the weight of evidence.\" },\n { key: \"procedural\", label: \"Procedural ruling\", short: \"Procedural\", bg: \"#ede9fe\", text: \"#4c1d95\", solid: \"#7c3aed\", explanation: \"A ruling about procedure, jurisdiction, standing, or admissibility.\" },\n { key: \"remedy\", label: \"Remedy / disposition / order\", short: \"Remedy / order\", bg: \"#d1fae5\", text: \"#065f46\", solid: \"#059669\", explanation: \"The remedy granted, disposition, or operative order.\" },\n { key: \"obiter\", label: \"Notable obiter\", short: \"Obiter\", bg: \"#ffe4e6\", text: \"#881337\", solid: \"#e11d48\", explanation: \"A comment made in passing that is not necessary to the decision — persuasive, not binding.\" },\n { key: \"definition\", label: \"Important definition / interpretation\", short: \"Definition\", bg: \"#cffafe\", text: \"#164e63\", solid: \"#0891b2\", explanation: \"A definition or statutory/language interpretation the court adopts.\" },\n];\n\nexport const categoryInfo = (key: CategoryKey): LegendEntry =>\n LEGEND.find((l) => l.key === key) ?? LEGEND[0];\n\nexport interface Paragraph {\n /** 0-based index, stable anchor within the analysis */\n index: number;\n /** Paragraph number shown in the margin (from the document when detected, else sequential) */\n num: string;\n /** True for heading/part labels — never highlighted */\n heading: boolean;\n /** Exact text of the paragraph */\n text: string;\n}\n\nexport interface MetadataField {\n value: string | null;\n confidence: \"detected\" | \"not-detected\";\n}\n\nexport interface CaseMetadata {\n styleOfCause: MetadataField;\n neutralCitation: MetadataField;\n court: MetadataField;\n decisionDate: MetadataField;\n judges: MetadataField;\n docket: MetadataField;\n fileNumber: MetadataField;\n}\n\nexport type LegalType =\n | \"ratio decidendi\"\n | \"legal test / rule\"\n | \"application of law to facts\"\n | \"key factual finding\"\n | \"credibility finding\"\n | \"procedural holding\"\n | \"remedy / order\"\n | \"notable obiter\";\n\nexport interface Highlight {\n id: string;\n /** exact, verbatim quote from the uploaded text (normalized whitespace) */\n exactQuote: string;\n paragraphIndex: number;\n paragraphNumber: string;\n /** character offsets into the ORIGINAL paragraph text for precise highlight rendering */\n startChar: number;\n endChar: number;\n category: CategoryKey;\n legalType: LegalType;\n importance: number; // 0–1\n confidence: number; // 0–1\n whatJudgeIsSaying: string;\n whyMatters: string;\n legalProposition: string; // \"Suggested proposition\"\n citationUse: string; // how to use/cite\n contextSummary: string;\n // user state (client-side)\n status?: \"saved\" | \"not-useful\";\n userNote?: string;\n}\n\nexport interface Analysis {\n source: \"ai\" | \"heuristic\";\n model?: string;\n engineLabel: string;\n metadata: CaseMetadata;\n paragraphs: Paragraph[];\n highlights: Highlight[];\n}\n\nexport type ProgressStage =\n | \"idle\"\n | \"Uploading\"\n | \"Extracting text\"\n | \"Identifying key passages\"\n | \"Building explanations\"\n | \"Ready\";\n","label",[143],"f0e0cafd-7acb-4310-8d30-6a8ed2a7d081","index.ts",15,["D",1788720538950],"http","import { parseVal, serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\nimport { Root } from \"./frontend/root.tsx\";\nimport { analyzeJudgment } from \"./server/analyze.ts\";\n\nconst app = new Hono();\n\n// Serve the (never-cached) HTML shell at the root /\napp.get(\"/\", (c) => c.html(Root()));\n\n// Serve frontend files at the version-addressed URLs Root() stamps, cached immutably\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\n\n// View source redirect\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// The analysis endpoint. The client parses the document in the browser and\n// sends plain text here; this endpoint returns structured highlights.\napp.post(\"/api/analyze\", async (c) => {\n let body: unknown;\n try {\n body = await c.req.json();\n } catch {\n return c.json({ ok: false, error: \"Could not read request body.\" }, 400);\n }\n const text = (body as any)?.text;\n if (typeof text !== \"string\" || text.trim().length < 40) {\n return c.json(\n { ok: false, error: \"No readable judgment text was provided (minimum ~40 characters).\" },\n 400,\n );\n }\n if (text.length > 1_500_000) {\n return c.json({ ok: false, error: \"Document is too large to analyze in one pass.\" }, 413);\n }\n try {\n const analysis = await analyzeJudgment(text);\n return c.json({ ok: true, analysis });\n } catch (e: any) {\n console.log(\"analyze failed:\", e);\n return c.json({ ok: false, error: `Analysis failed: ${e?.message ?? \"unknown error\"}` }, 500);\n }\n});\n\n// Unwrap and rethrow Hono errors as the original error\napp.onError((err) => Promise.reject(err));\n\n// HTTP vals expect an exported \"fetch handler\"\nexport default app.fetch;\n",[153],"362d2787-1892-450e-a045-b1158ca752a2","README.md","01a0780a-5903-77b6-aac8-7592d4e98454",1,["D",1788720339103],"# 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",[160],"3ba147c7-9d07-4444-9b21-71b45cae8c00","CHANGELOG.md","01a0780a-5903-77b6-aac8-70166b5b6141",["D",1788720339103],"# 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

Diff · v22