feat: indexer app setup

AGENTS.md

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+<!--VITE PLUS START-->
+
+# Using Vite+, the Unified Toolchain for the Web
+
+This project is using Vite+, a unified toolchain built on top of Vite, Rolldown, Vitest, tsdown, Oxlint, Oxfmt, and Vite Task. Vite+ wraps runtime management, package management, and frontend tooling in a single global CLI called `vp`. Vite+ is distinct from Vite, and it invokes Vite through `vp dev` and `vp build`. Run `vp help` to print a list of commands and `vp <command> --help` for information about a specific command.
+
+Docs are local at `node_modules/vite-plus/docs` or online at https://viteplus.dev/guide/.
+
+## Built-in Commands vs Scripts
+
+`vp <name>` runs a built-in command. `vp run <name>` runs a `package.json` script or a `vite.config.ts` task. Scripts cannot overwrite built-ins, so `vp dev` and `vp run dev` may do different things. Check `package.json` and `vite.config.ts` first, and run `vp run <name>` when the project defines a script or task with that name.
+
+## Tool Versions
+
+Run `vp toolchain` to show versions and relationships in the active Vite+
+release. Add a tool name to select part of the graph. For example, run
+`vp toolchain vite`. Use `--global` to ignore the local `vite-plus` package. Use
+`vp why <package>` to show the package-manager dependency graph.
+
+## Review Checklist
+
+- [ ] Run `vp install` after pulling remote changes and before getting started.
+- [ ] Run `vp check` and `vp test` to format, lint, type check and test changes.
+- [ ] Check if there are `vite.config.ts` tasks or `package.json` scripts necessary for validation, run via `vp run <script>`.
+- [ ] If setup, runtime, or package-manager behavior looks wrong, run `vp env doctor` and include its output when asking for help.
+
+<!--VITE PLUS END-->

apps/indexer/.gitignore

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+node_modules
+dist
+*.log
+.DS_Store

apps/indexer/package.json

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+{
+  "name": "indexer",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "pnpm build && node --env-file-if-exists=.env dist/index.mjs",
+    "build": "vp pack",
+    "test": "vp test"
+  },
+  "devDependencies": {
+    "@types/node": "22.15.17",
+    "typescript": "7.0.2",
+    "vite-plus": "catalog:"
+  }
+}

apps/indexer/src/index.ts

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+export function fn() {
+  return "Hello, tsdown!";
+}
+
+fn();

apps/indexer/tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "esnext",
+    "lib": ["es2023"],
+    "moduleDetection": "force",
+    "module": "nodenext",
+    "moduleResolution": "nodenext",
+    "resolveJsonModule": true,
+    "types": ["node"],
+    "strict": true,
+    "noUnusedLocals": true,
+    "declaration": true,
+    "noEmit": true,
+    "allowImportingTsExtensions": true,
+    "esModuleInterop": true,
+    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
+    "skipLibCheck": true
+  }
+}

apps/indexer/vite.config.ts

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+import { defineConfig } from "vite-plus";
+
+export default defineConfig({});