fix(typescript-client): derive CLIENT_VERSION via tsup define

The hardcoded `CLIENT_VERSION = "0.5.1"` in src/index.ts has fallen
behind npm releases through 0.5.6 / 0.5.7 / 0.6.0 — every published
release since 0.5.1 ships a stale constant, mis-attributing User-Agent
in server-side telemetry and foreclosing client-side feature gating.

Substitute `__CLIENT_VERSION__` with `pkg.version` via tsup's `define`
at build time. Source has no JSON import, so the fix is uniform across
runtimes (Node CJS/ESM, Deno via npm:, Deno via raw src) — unlike a
direct `import pkg from "../package.json"`, which Deno rejects without
`with { type: "json" }`, and which would in turn cascade into tsconfig
+ ts-jest reconfiguration (see #1535 for that path).

A `typeof` guard with a `0.0.0-dev` sentinel keeps raw-source loads
(jest, `npm run test:deno`) from throwing ReferenceError when the
build-time substitution hasn't run.

Verified locally: build, jest 6/6, Node CJS/ESM, Deno (dist), Deno
(raw src) all report the substituted version (or the dev sentinel
where appropriate). dist no longer inlines the full package.json
(devDependencies, scripts, repository url) — only the version string.

Closes #1535.

hindsight-clients/typescript/src/index.ts

@@ -53,7 +53,12 @@ import type {
   TagGroupNotInput,
 } from "../generated/types.gen";
 
-export const CLIENT_VERSION = "0.5.1";
+// __CLIENT_VERSION__ is replaced by tsup's `define` with package.json's version
+// at build time. The typeof guard keeps raw-source loads (jest, deno test:deno)
+// from throwing ReferenceError; they get a sentinel that makes drift obvious.
+declare const __CLIENT_VERSION__: string | undefined;
+export const CLIENT_VERSION: string =
+  typeof __CLIENT_VERSION__ !== "undefined" ? __CLIENT_VERSION__ : "0.0.0-dev";
 export const DEFAULT_USER_AGENT = `hindsight-client-typescript/${CLIENT_VERSION}`;
 
 export interface HindsightClientOptions {

hindsight-clients/typescript/tsup.config.ts

@@ -1,4 +1,5 @@
 import { defineConfig } from "tsup";
+import pkg from "./package.json";
 
 export default defineConfig({
   entry: ["src/index.ts"],
@@ -9,4 +10,9 @@ export default defineConfig({
   sourcemap: true,
   // Bundle all relative imports (src + generated) into the output
   bundle: true,
+  // Substitute __CLIENT_VERSION__ with package.json's version at build time so
+  // the constant in src/index.ts can never drift from what npm publishes.
+  define: {
+    __CLIENT_VERSION__: JSON.stringify(pkg.version),
+  },
 });