fix: register the cache-dir subpath for bun and node, and build inspector from core source

docs/packages/cli.mdx

@@ -1836,7 +1836,7 @@ default 3); `--json` prints the results as JSON.
 ## Keep the environment healthy
 
 HyperFrames keeps what it downloads and builds (the headless browser, models, optional packages, fonts and project
-history) under `~/.cache/hyperframes`. Set `HYPERFRAMES_CACHE_DIR` to keep it somewhere else.
+history) under `~/.cache/hyperframes`. Set `HYPERFRAMES_CACHE_DIR` to an absolute path to keep it somewhere else.
 
 ### `doctor`
 

packages/core/package-subpaths.json

@@ -68,6 +68,12 @@
       "types": "./dist/atomicFile.d.ts",
       "environments": ["bun", "node"]
     },
+    "./cache-dir": {
+      "source": "./src/cacheDir.ts",
+      "runtime": "./dist/cacheDir.js",
+      "types": "./dist/cacheDir.d.ts",
+      "environments": ["bun", "node"]
+    },
     "./remove-tree": {
       "source": "./src/removeTree.ts",
       "runtime": "./dist/removeTree.js",

packages/core/src/cacheDir.ts

@@ -1,8 +1,6 @@
 import { homedir } from "node:os";
 import { join, resolve } from "node:path";
 
-/** Where HyperFrames keeps what it downloads, builds and caches: `HYPERFRAMES_CACHE_DIR` when set, else
- * `~/.cache/hyperframes`. Read on each call. */
 export function hyperframesCacheDir(...parts: string[]): string {
   const named = process.env["HYPERFRAMES_CACHE_DIR"];
   return join(named ? resolve(named) : join(homedir(), ".cache", "hyperframes"), ...parts);

packages/inspector/src/service.ts

@@ -31,7 +31,7 @@ import {
 import { closeServer } from "./pageServer";
 import { Sources, fingerprint } from "./sources";
 import type { InspectRequest, Snippet } from "./types";
-import { hyperframesCacheDir } from "@hyperframes/core/cache-dir";
+import { hyperframesCacheDir } from "../../core/src/cacheDir";
 
 const pageRunner = (page: Page): PageRunner => ({
   run: <A, R>(fn: (arg: A) => R, arg: A) =>