fix(cycling-coach): inject createRequire into ESM bundle to fix startup crash (#295)

The published binary bundles workspace packages inline (noExternal
@enduragent/*), pulling transitive CommonJS deps (@grammyjs/auto-retry ->
debug) into the ESM bundle. Their require() of Node builtins hit esbuild's
dynamic-require shim, which threw at startup (Dynamic require of "tty" is
not supported) — crashing the container and failing the release pack-smoke.

Add a createRequire banner so the shim delegates to a real require.

Author: yerzhansa

.changeset/fix-esm-dynamic-require.md

@@ -0,0 +1,7 @@
+---
+"cycling-coach": patch
+---
+
+User-facing: Fixed a startup crash that stopped the bot from launching on the latest release.
+
+The published binary bundles workspace packages inline, which pulls in transitive CommonJS dependencies whose `require()` of Node builtins hit esbuild's ESM dynamic-require shim and threw at startup. A `createRequire` banner in the bundle gives that shim a real `require` to delegate to, so the builtins resolve normally.

packages/cycling-coach/tsup.config.ts

@@ -11,5 +11,15 @@ export default defineConfig({
   // self-contained. See ADR-0010.
   noExternal: [/^@enduragent\//],
   // Shebang for the bin field — npm preserves bin permissions on publish.
-  banner: { js: "#!/usr/bin/env node" },
+  // createRequire shim: bundling @enduragent/* pulls transitive CJS deps
+  // (e.g. @grammyjs/auto-retry → debug) inline, and their `require()` of Node
+  // builtins hits esbuild's ESM `__require`, which throws without a real
+  // `require` in scope. Defining one makes that shim delegate instead of throw.
+  banner: {
+    js: [
+      "#!/usr/bin/env node",
+      'import { createRequire as __createRequire } from "node:module";',
+      "const require = __createRequire(import.meta.url);",
+    ].join("\n"),
+  },
 });