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{ resolvePDS } from \"./auth.ts\";\nimport { deleteDelayedRequest, listDueRequests } from \"./db.ts\";\n\nexport default async function (): Promise {\n const due = await listDueRequests(Date.now());\n\n for (const row of due) {\n try {\n const request = JSON.parse(row.request) as Record;\n const $type = request.$type;\n delete request.$type;\n\n if (typeof $type !== \"string\" || $type.length === 0) {\n throw new Error(`stored request for ${row.dkey} is missing $type`);\n }\n\n const pds = await resolvePDS(row.did);\n const resp = await fetch(`${pds}/xrpc/${$type}`, {\n method: \"POST\",\n headers: {\n Authorization: `Bearer ${row.authToken}`,\n \"Content-Type\": \"application/json\",\n },\n body: JSON.stringify(request),\n });\n\n if (!resp.ok) {\n const body = await resp.text().catch(() => \"\");\n console.error(\n `[${row.dkey}] ${$type} failed for ${row.did}: ${resp.status} ${body}`,\n );\n } else {\n console.log(`[${row.dkey}] ${$type} succeeded for ${row.did}`);\n }\n } catch (e: any) {\n console.error(`[${row.dkey}] error: ${e?.message ?? e}`);\n } finally {\n await deleteDelayedRequest(row.dkey);\n }\n }\n}\n","createdAt",["D",1779402633314],"branchVersion","branchId","d352e792-5535-11f1-8318-ee650bb23af1","id","d3523040-5535-11f1-8318-ee650bb23af1","Delay",["D",1779382509220],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","Update atproto record after a delay, unless 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{ safeParse } from \"https://esm.sh/@atcute/lexicons@2.0.0\";\nimport {\n ComAtprotoRepoDeleteRecord,\n ComAtprotoRepoPutRecord,\n} from \"https://esm.sh/@atcute/atproto@4.0.0?deps=@atcute/lexicons@2.0.0\";\n\nconst SCHEMAS = {\n \"com.atproto.repo.putRecord\": ComAtprotoRepoPutRecord.mainSchema.input.schema,\n \"com.atproto.repo.deleteRecord\": ComAtprotoRepoDeleteRecord.mainSchema.input.schema,\n} as const;\n\nexport type RequestType = keyof typeof SCHEMAS;\nconst ALLOWED_TYPES = Object.keys(SCHEMAS) as RequestType[];\n\nexport type ValidatedRequest =\n | {\n ok: true;\n $type: \"com.atproto.repo.putRecord\";\n value: ComAtprotoRepoPutRecord.$input;\n }\n | {\n ok: true;\n $type: \"com.atproto.repo.deleteRecord\";\n value: ComAtprotoRepoDeleteRecord.$input;\n }\n | { ok: false; message: string; issues?: unknown };\n\n/** Validate a request against the appropriate lexicon based on its $type field. */\nexport function validateRequest(input: unknown): ValidatedRequest {\n if (typeof input !== \"object\" || input === null) {\n return { ok: false, message: \"request must be an object\" };\n }\n const $type = (input as Record).$type;\n if (typeof $type !== \"string\") {\n return { ok: false, message: \"request.$type is required\" };\n }\n if (!ALLOWED_TYPES.includes($type as RequestType)) {\n return {\n ok: false,\n message: `request.$type must be one of: ${ALLOWED_TYPES.join(\", \")}`,\n };\n }\n const result = safeParse(SCHEMAS[$type as RequestType], input);\n if (!result.ok) {\n return { ok: false, message: result.message, issues: result.issues };\n }\n return { ok: true, $type, value: result.value } as ValidatedRequest;\n}\n","label",[139],"d6ed0500-553e-11f1-b925-ee650bb23af1","parse-time.ts","9faafa7a-553e-11f1-afa3-ee650bb23af1",16,["D",1779386380722],2,"/**\n * Parse an executeAfter value into a unix timestamp in milliseconds.\n *\n * Supported formats:\n * - ISO 8601 timestamp: \"2026-05-21T10:00:00.000Z\"\n * - ISO 8601 timestamp + duration suffix: \"2026-05-21T10:00:00.000Z/PT30M\"\n * - Unix timestamp (ms): \"1779354000000\"\n * - Unix timestamp (ms) + offset: \"1779354000000+60000\"\n */\nexport function parseExecuteAfter(input: string): number {\n // Try unix timestamp format: digits, optionally followed by +digits\n const unixMatch = input.match(/^(\\d{10,16})(?:\\+(\\d{1,16}))?$/);\n if (unixMatch) {\n const base = parseInt(unixMatch[1], 10);\n const offset = unixMatch[2] ? parseInt(unixMatch[2], 10) : 0;\n return base + offset;\n }\n\n // Try ISO 8601, optionally with /duration suffix\n const slashIdx = input.indexOf(\"/\");\n let isoStr: string;\n let durationStr: string | null = null;\n\n if (slashIdx !== -1) {\n isoStr = input.slice(0, slashIdx);\n durationStr = input.slice(slashIdx + 1);\n } else {\n isoStr = input;\n }\n\n // Sanity check: must start with a 4-digit year to be a valid ISO 8601 timestamp\n if (!/^\\d{4}-/.test(isoStr)) {\n throw new Error(`Invalid executeAfter value: \"${input}\"`);\n }\n\n const baseMs = Date.parse(isoStr);\n if (isNaN(baseMs)) {\n throw new Error(`Invalid executeAfter value: \"${input}\"`);\n }\n\n if (!durationStr) return baseMs;\n\n const offsetMs = parseISO8601Duration(durationStr);\n return baseMs + offsetMs;\n}\n\n/**\n * Parse a subset of ISO 8601 durations into milliseconds.\n * Supports: P[nD][T[nH][nM][nS]]\n * Examples: PT30M, PT1H30M, P1DT12H, PT90S, PT1H, PT0.5S\n */\nfunction parseISO8601Duration(dur: string): number {\n const match = dur.match(\n /^P(?:(\\d+)D)?(?:T(?:(\\d+)H)?(?:(\\d+(?:\\.\\d+)?)M)?(?:(\\d+(?:\\.\\d+)?)S)?)?$/,\n );\n if (!match) {\n throw new Error(`Invalid ISO 8601 duration: \"${dur}\"`);\n }\n\n const days = parseInt(match[1] || \"0\", 10);\n const hours = parseInt(match[2] || \"0\", 10);\n const minutes = parseFloat(match[3] || \"0\");\n const seconds = parseFloat(match[4] || \"0\");\n\n return (\n days * 86_400_000 +\n hours * 3_600_000 +\n minutes * 60_000 +\n seconds * 1_000\n );\n}\n",[151],"c970df14-553e-11f1-bf79-ee650bb23af1","parse-time.test.ts","bfddc57a-553e-11f1-b51e-ee650bb23af1",14,["D",1779386358099],"import { parseExecuteAfter } from \"./parse-time.ts\";\n\n// Compute expected values from Date.parse to avoid manual arithmetic errors\nconst baseMs = Date.parse(\"2026-05-21T10:00:00.000Z\");\n\nconst cases: [string, number][] = [\n // Plain ISO 8601\n [\"2026-05-21T10:00:00.000Z\", baseMs],\n // ISO 8601 + duration\n [\"2026-05-21T10:00:00.000Z/PT30M\", baseMs + 30 * 60_000],\n [\"2026-05-21T10:00:00.000Z/PT1H\", baseMs + 3_600_000],\n [\"2026-05-21T10:00:00.000Z/P1DT12H\", baseMs + 86_400_000 + 12 * 3_600_000],\n [\"2026-05-21T10:00:00.000Z/PT1.5S\", baseMs + 1_500],\n // Unix timestamp ms\n [\"1779357600000\", 1779357600000],\n // Unix timestamp ms + offset\n [\"1779357600000+60000\", 1779357600000 + 60000],\n [\"1779357600000+0\", 1779357600000],\n];\n\nlet pass = 0;\nlet fail = 0;\nfor (const [input, expected] of cases) {\n const result = parseExecuteAfter(input);\n if (result === expected) {\n pass++;\n console.log(`✅ \"${input}\" => ${result}`);\n } else {\n fail++;\n console.error(`❌ \"${input}\" => ${result} (expected ${expected})`);\n }\n}\n\n// Error cases\nconst badCases = [\"not-a-date\", \"\", \"abc+123\", \"PT30M\", \"/PT30M\"];\nfor (const input of badCases) {\n try {\n parseExecuteAfter(input);\n fail++;\n console.error(`❌ \"${input}\" should have thrown`);\n } catch {\n pass++;\n console.log(`✅ \"${input}\" correctly threw`);\n }\n}\n\nconsole.log(`\\n${pass} passed, ${fail} failed`);\nif (fail > 0) throw new Error(\"Tests failed\");\n",[159],"1996a4ee-555b-11f1-9e8d-ee650bb23af1","main.ts","d3593908-5535-11f1-8318-ee650bb23af1",25,["D",1779398518353],9,"http","import { validateAuth } from \"./auth.ts\";\nimport { deleteDelayedRequest, upsertDelayedRequest } from \"./db.ts\";\nimport { parseExecuteAfter } from \"./parse-time.ts\";\nimport { validateRequest } from \"./validate.ts\";\n\nexport default async function(req: Request): Promise {\n const url = new URL(req.url);\n\n // Only accept POST to our XRPC endpoint\n if (req.method !== \"POST\" || url.pathname !== \"/xrpc/me.byjp.atproto.repo.delayedRequest\") {\n return Response.json(\n { error: \"NotFound\", message: `Unknown endpoint: ${req.method} ${url.pathname}` },\n { status: 404 },\n );\n }\n\n // Extract Bearer token\n const authHeader = req.headers.get(\"Authorization\");\n if (!authHeader?.startsWith(\"Bearer \")) {\n return Response.json(\n { error: \"AuthRequired\", message: \"Missing or invalid Authorization header\" },\n { status: 401 },\n );\n }\n const token = authHeader.slice(\"Bearer \".length);\n\n // Parse body\n let body: any;\n try {\n body = await req.json();\n } catch {\n return Response.json(\n { error: \"InvalidRequest\", message: \"Request body must be valid JSON\" },\n { status: 400 },\n );\n }\n\n // Validate delay.key is present\n const dkey = body?.delay?.key;\n if (typeof dkey !== \"string\" || dkey.length === 0) {\n return Response.json(\n { error: \"InvalidRequest\", message: \"delay.key is required and must be a non-empty string\" },\n { status: 400 },\n );\n }\n\n // If there's no request field, this is a delete\n if (!body.request) {\n const deleted = await deleteDelayedRequest(dkey);\n return Response.json({ ok: true, deleted });\n }\n\n // Validate request: $type must be one of the allowed procedures, and the body\n // must match that procedure's input lexicon.\n const validation = validateRequest(body.request);\n if (!validation.ok) {\n return Response.json(\n { error: \"InvalidRequest\", message: validation.message, issues: validation.issues },\n { status: 400 },\n );\n }\n const atpRequest = validation.value;\n\n // Validate executeAfter\n const rawExecuteAfter = body.delay?.executeAfter;\n if (rawExecuteAfter === undefined || rawExecuteAfter === null) {\n return Response.json(\n { error: \"InvalidRequest\", message: \"delay.executeAfter is required when request is provided\" },\n { status: 400 },\n );\n }\n\n let executeAfter: number;\n try {\n executeAfter = parseExecuteAfter(String(rawExecuteAfter));\n } catch (e: any) {\n return Response.json(\n { error: \"InvalidRequest\", message: e.message },\n { status: 400 },\n );\n }\n\n // Validate auth: token must be valid for the given repo DID\n try {\n await validateAuth(atpRequest.repo, token);\n } catch (e: any) {\n return Response.json(\n { error: \"AuthFailed\", message: e.message },\n { status: 403 },\n );\n }\n\n // Upsert into database\n await upsertDelayedRequest({\n dkey,\n did: atpRequest.repo,\n request: JSON.stringify(atpRequest),\n executeAfter,\n authToken: token,\n });\n\n return Response.json({ ok: true, dkey, executeAfter });\n}\n","atproto-delayed-put",[166],"ae39643e-5564-11f1-909e-ee650bb23af1",["D",1779402633314],[27],"8a692f46-5558-11f1-a7f1-ee650bb23af1","deno.json","8a692ff0-5558-11f1-a7f1-ee650bb23af1",22,["D",1779397419229],"{\n \"$schema\": \"https://raw.githubusercontent.com/denoland/deno/98f62cee78e85bfc47c62ed703777c6bc8794f1c/cli/schemas/config-file.v1.json\",\n \"lock\": false,\n \"compilerOptions\": {\n \"noImplicitAny\": false,\n \"strict\": true,\n \"types\": [\"https://www.val.town/types/valtown.d.ts\"],\n \"lib\": [\n \"dom\",\n \"dom.iterable\",\n \"dom.asynciterable\",\n \"deno.ns\",\n \"deno.unstable\"\n ]\n },\n \"lint\": {\n \"include\": [\"deno:/https/esm.town/**/*\"],\n \"rules\": {\n \"exclude\": [\"no-explicit-any\"]\n }\n },\n \"node_modules_dir\": false,\n \"experimental\": {\n \"unstable-node-globals\": true,\n \"unstable-temporal\": true,\n \"unstable-worker-options\": true,\n \"unstable-sloppy-imports\": true\n }\n}",[179],"8a7eb0c8-5558-11f1-b998-ee650bb23af1","db.ts","a873d550-553e-11f1-bf79-ee650bb23af1",23,["D",1779397419399],"import { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\n\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS delayed_requests (\n dkey TEXT PRIMARY KEY,\n did TEXT NOT NULL,\n request TEXT NOT NULL,\n executeAfter INTEGER NOT NULL,\n authToken TEXT NOT NULL\n)`);\n\nexport interface DelayedRequest {\n dkey: string;\n did: string;\n request: string;\n executeAfter: number;\n authToken: string;\n}\n\n/** Upsert a delayed request (insert or replace by primary key). */\nexport async function upsertDelayedRequest(row: DelayedRequest): Promise {\n await sqlite.execute({\n sql: `INSERT INTO delayed_requests (dkey, did, request, executeAfter, authToken)\n VALUES (?, ?, ?, ?, ?)\n ON CONFLICT(dkey) DO UPDATE SET\n did = excluded.did,\n request = excluded.request,\n executeAfter = excluded.executeAfter,\n authToken = excluded.authToken`,\n args: [row.dkey, row.did, row.request, row.executeAfter, row.authToken],\n });\n}\n\n/** Delete a delayed request by key. Returns true if a row was deleted. */\nexport async function deleteDelayedRequest(dkey: string): Promise {\n const result = await sqlite.execute({\n sql: `DELETE FROM delayed_requests WHERE dkey = ?`,\n args: [dkey],\n });\n return (result.rowsAffected ?? 0) > 0;\n}\n",[186],"a626b8b2-553e-11f1-b51e-ee650bb23af1","auth.ts","a626b952-553e-11f1-b51e-ee650bb23af1",["D",1779386298896],"/**\n * Resolve a DID to its PDS endpoint, then validate the Bearer token\n * by calling com.atproto.server.getSession on that PDS.\n *\n * Returns the validated DID on success, or throws on failure.\n */\n\n/** Resolve the PDS service endpoint for a DID */\nexport async function resolvePDS(did: string): Promise {\n const doc = await resolveDidDocument(did);\n const pdsService = doc.service?.find(\n (s: { id: string; type: string }) =>\n s.id === \"#atproto_pds\" || s.type === \"AtprotoPersonalDataServer\",\n );\n if (!pdsService?.serviceEndpoint) {\n throw new Error(`No PDS service endpoint found for ${did}`);\n }\n return pdsService.serviceEndpoint;\n}\n\nasync function resolveDidDocument(did: string): Promise {\n if (did.startsWith(\"did:plc:\")) {\n const resp = await fetch(`https://plc.directory/${did}`);\n if (!resp.ok) {\n throw new Error(`Failed to resolve ${did} via plc.directory: ${resp.status}`);\n }\n return resp.json();\n }\n\n if (did.startsWith(\"did:web:\")) {\n // did:web:example.com -> https://example.com/.well-known/did.json\n // did:web:example.com:path:to -> https://example.com/path/to/did.json\n const parts = did.slice(\"did:web:\".length).split(\":\");\n const host = decodeURIComponent(parts[0]);\n const path = parts.length > 1\n ? \"/\" + parts.slice(1).map(decodeURIComponent).join(\"/\") + \"/did.json\"\n : \"/.well-known/did.json\";\n const url = `https://${host}${path}`;\n const resp = await fetch(url);\n if (!resp.ok) {\n throw new Error(`Failed to resolve ${did} via ${url}: ${resp.status}`);\n }\n return resp.json();\n }\n\n throw new Error(`Unsupported DID method: ${did}`);\n}\n\n/**\n * Validate a Bearer token against the PDS for the given DID.\n * Calls com.atproto.server.getSession and checks the returned DID matches.\n */\nexport async function validateAuth(did: string, token: string): Promise {\n const pds = await resolvePDS(did);\n const resp = await fetch(`${pds}/xrpc/com.atproto.server.getSession`, {\n headers: { Authorization: `Bearer ${token}` },\n });\n\n if (!resp.ok) {\n const body = await resp.text().catch(() => \"\");\n throw new Error(`Auth validation failed (${resp.status}): ${body}`);\n }\n\n const session: { did: string } = await resp.json();\n if (session.did !== did) {\n throw new Error(\n `Token DID mismatch: expected ${did}, got ${session.did}`,\n );\n }\n}\n",[193],"8a4fe978-5558-11f1-a7cd-ee650bb23af1","AGENTS.md","8a4fea4a-5558-11f1-a7cd-ee650bb23af1",19,["D",1779397419093],"You are an advanced assistant specialized in generating Val Town code.\n\n## Core Guidelines\n\n- Ask clarifying questions when requirements are ambiguous\n- Provide complete, functional solutions rather than skeleton implementations\n- Test your logic against edge cases before presenting the final solution\n- Ensure all code follows Val Town's specific platform requirements\n- If a section of code that you're working on is getting too complex, consider refactoring it into subcomponents\n\n## Code Standards\n\n- Generate code in TypeScript or TSX\n- Add appropriate TypeScript types and interfaces for all data structures\n- Prefer official SDKs or libraries than writing API calls directly\n- Ask the user to supply API or library documentation if you are at all unsure about it\n- **Never bake in secrets into the code** - always use environment variables\n- Include comments explaining complex logic (avoid commenting obvious operations)\n- Follow modern ES6+ conventions and functional programming practices if possible\n\n## Types of triggers\n\n### 1. HTTP Trigger\n\n- Create web APIs and endpoints\n- Handle HTTP requests and responses\n- Example structure:\n\n```ts\nexport default async function (req: Request) {\n return new Response(\"Hello World\");\n}\n```\n\nFiles that are HTTP triggers have http in their name like `foobar.http.tsx`\n\n### 2. Cron Triggers\n\n- Run on a schedule\n- Use cron expressions for timing\n- Example structure:\n\n```ts\nexport default async function () {\n // Scheduled task code\n}\n```\n\nFiles that are Cron triggers have cron in their name like `foobar.cron.tsx`\n\n### 3. Email Triggers\n\n- Process incoming emails\n- Handle email-based workflows\n- Example structure:\n\n```ts\nexport default async function (email: Email) {\n // Process email\n}\n```\n\nFiles that are Email triggers have email in their name like `foobar.email.tsx`\n\n\n## Val Town Standard Libraries\n\nVal Town provides several hosted services and utility functions.\n\n### Blob Storage\n\n```ts\nimport { blob } from \"https://esm.town/v/std/blob\";\nawait blob.setJSON(\"myKey\", { hello: \"world\" });\nlet blobDemo = await blob.getJSON(\"myKey\");\nlet appKeys = await blob.list(\"app_\");\nawait blob.delete(\"myKey\");\n```\n\n### SQLite\n\n```ts\nimport { sqlite } from \"https://esm.town/v/stevekrouse/sqlite\";\nconst TABLE_NAME = 'todo_app_users_2';\n// Create table - do this before usage and change table name when modifying schema\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS ${TABLE_NAME} (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n name TEXT NOT NULL\n)`);\n// Query data\nconst result = await sqlite.execute(`SELECT * FROM ${TABLE_NAME} WHERE id = ?`, [1]);\n```\n\nNote: When changing a SQLite table's schema, change the table's name (e.g., add _2 or _3) to create a fresh table.\n\n### OpenAI\n\n```ts\nimport { OpenAI } from \"https://esm.town/v/std/openai\";\nconst openai = new OpenAI();\nconst completion = await openai.chat.completions.create({\n messages: [\n { role: \"user\", content: \"Say hello in a creative way\" },\n ],\n model: \"gpt-4o-mini\",\n max_tokens: 30,\n});\n```\n\n### Email\n\n```ts\nimport { email } from \"https://esm.town/v/std/email\";\n// By default emails the owner of the val\nawait email({ \n subject: \"Hi\", \n text: \"Hi\", \n html: \"

Hi

\"\n});\n```\n\n## Val Town Utility Functions\n\nVal Town provides several utility functions to help with common project tasks.\n\n### Importing Utilities\n\nAlways import utilities with version pins to avoid breaking changes:\n\n```ts\nimport { parseProject, readFile, serveFile } from \"https://esm.town/v/std/utils@85-main/index.ts\";\n```\n\n### Available Utilities\n\n\n#### **serveFile** - Serve project files with proper content types\n\nFor example, in Hono:\n\n```ts\n// serve all files in frontend/ and shared/\napp.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\napp.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n```\n\n#### **readFile** - Read files from within the project:\n\n```ts\n// Read a file from the project\nconst fileContent = await readFile(\"/frontend/index.html\", import.meta.url);\n```\n\n#### **listFiles** - List all files in the project\n\n```ts\nconst files = await listFiles(import.meta.url);\n```\n\n#### **parseProject** - Extract information about the current project from import.meta.url\n\nThis is useful for including info for linking back to a val, ie in \"view source\" urls:\n\n```ts\nconst projectVal = parseProject(import.meta.url);\nconsole.log(projectVal.username); // Owner of the project\nconsole.log(projectVal.name); // Project name\nconsole.log(projectVal.version); // Version number\nconsole.log(projectVal.branch); // Branch name\nconsole.log(projectVal.links.self.project); // URL to the project page\n```\n\nHowever, it's *extremely importing* to note that `parseProject` and other Standard Library utilities ONLY RUN ON THE SERVER.\nIf you need access to this data on the client, run it in the server and pass it to the client by splicing it into the HTML page\nor by making an API request for it.\n\n## Val Town Platform Specifics\n\n- **Redirects:** Use `return new Response(null, { status: 302, headers: { Location: \"/place/to/redirect\" }})` instead of `Response.redirect` which is broken\n- **Images:** Avoid external images or base64 images. Use emojis, unicode symbols, or icon fonts/libraries instead\n- **AI Image:** To inline generate an AI image use: `

`\n- **Storage:** DO NOT use the Deno KV module for storage\n- **Browser APIs:** DO NOT use the `alert()`, `prompt()`, or `confirm()` methods\n- **Weather Data:** Use open-meteo for weather data (doesn't require API keys) unless otherwise specified\n- **View Source:** Add a view source link by importing & using `import.meta.url.replace(\"ems.sh\", \"val.town)\"` (or passing this data to the client) and include `target=\"_top\"` attribute\n- **Error Debugging:** Add `` to HTML to capture client-side errors\n- **Error Handling:** Only use try...catch when there's a clear local resolution; Avoid catches that merely log or return 500s. Let errors bubble up with full context\n- **Environment Variables:** Use `Deno.env.get('keyname')` when you need to, but generally prefer APIs that don't require keys\n- **Imports:** Use `https://esm.sh` for npm and Deno dependencies to ensure compatibility on server and browser\n- **Storage Strategy:** Only use backend storage if explicitly required; prefer simple static client-side sites\n- **React Configuration:** When using React libraries, pin versions with `?deps=react@18.2.0,react-dom@18.2.0` and start the file with `/** @jsxImportSource https://esm.sh/react@18.2.0 */`\n- Ensure all React dependencies and sub-dependencies are pinned to the same version\n- **Styling:** Default to using TailwindCSS via `` unless otherwise specified\n\n## Project Structure and Design Patterns\n\n### Recommended Directory Structure\n```\n├── backend/\n│ ├── database/\n│ │ ├── migrations.ts # Schema definitions\n│ │ ├── queries.ts # DB query functions\n│ │ └── README.md\n│ └── routes/ # Route modules\n│ ├── [route].ts\n│ └── static.ts # Static file serving\n│ ├── index.ts # Main entry point\n│ └── README.md\n├── frontend/\n│ ├── components/\n│ │ ├── App.tsx\n│ │ └── [Component].tsx\n│ ├── favicon.svg\n│ ├── index.html # Main HTML template\n│ ├── index.tsx # Frontend JS entry point\n│ ├── README.md\n│ └── style.css\n├── README.md\n└── shared/\n ├── README.md\n └── utils.ts # Shared types and functions\n```\n\n### Backend (Hono) Best Practices\n\n- Hono is the recommended API framework\n- Main entry point should be `backend/index.ts`\n- **Static asset serving:** Use the utility functions to read and serve project files:\n ```ts\n import { readFile, serveFile } from \"https://esm.town/v/std/utils@85-main/index.ts\";\n \n // serve all files in frontend/ and shared/\n app.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\n app.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n \n // For index.html, often you'll want to bootstrap with initial data\n app.get(\"/\", async c => {\n let html = await readFile(\"/frontend/index.html\", import.meta.url);\n \n // Inject data to avoid extra round-trips\n const initialData = await fetchInitialData();\n const dataScript = ``;\n \n html = html.replace(\"\", `${dataScript}`);\n return c.html(html);\n });\n ```\n- Create RESTful API routes for CRUD operations\n- Always include this snippet at the top-level Hono app to re-throwing errors to see full stack traces:\n ```ts\n // Unwrap Hono errors to see original error details\n app.onError((err, c) => {\n throw err;\n });\n ```\n\n### Database Patterns\n- Run migrations on startup or comment out for performance\n- Change table names when modifying schemas rather than altering\n- Export clear query functions with proper TypeScript typing\n\n## Common Gotchas and Solutions\n\n1. **Environment Limitations:** \n - Val Town runs on Deno in a serverless context, not Node.js\n - Code in `shared/` must work in both frontend and backend environments\n - Cannot use `Deno` keyword in shared code\n - Use `https://esm.sh` for imports that work in both environments\n\n2. **SQLite Peculiarities:**\n - Limited support for ALTER TABLE operations\n - Create new tables with updated schemas and copy data when needed\n - Always run table creation before querying\n\n3. **React Configuration:**\n - All React dependencies must be pinned to 18.2.0\n - Always include `@jsxImportSource https://esm.sh/react@18.2.0` at the top of React files\n - Rendering issues often come from mismatched React versions\n\n4. **File Handling:**\n - Val Town only supports text files, not binary\n - Use the provided utilities to read files across branches and forks\n - For files in the project, use `readFile` helpers\n\n5. **API Design:**\n - `fetch` handler is the entry point for HTTP vals\n - Run the Hono app with `export default app.fetch // This is the entry point for HTTP 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