Add HyperFrames skills (from heygen-com/hyperframes, Apache-2.0)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FXVsD1DgdzZLiPuwtKzMSY

.claude/skills/media-use/scripts/lib/npx-sync.mjs

@@ -0,0 +1,57 @@
+import { existsSync } from "node:fs";
+import { dirname, join } from "node:path";
+
+function resolveNpxCliPath(env, pathExists) {
+  const npmExecPath = env.npm_execpath;
+  const nodeExecPath = env.npm_node_execpath || process.execPath;
+  if (npmExecPath) {
+    const fileName = npmExecPath.replace(/\\/g, "/").split("/").pop()?.toLowerCase();
+    const candidate =
+      fileName === "npx-cli.js" ? npmExecPath : join(dirname(npmExecPath), "npx-cli.js");
+    if (pathExists(candidate)) return candidate;
+  }
+  const besideNode = join(dirname(nodeExecPath), "node_modules", "npm", "bin", "npx-cli.js");
+  return pathExists(besideNode) ? besideNode : null;
+}
+
+// Sync-spawn analog of the audio engine's spawnP, for execFileSync call sites
+// that must hard-fail (rather than fall through to another provider) when npx
+// cannot be resolved. On Windows a bare "npx" is npx.cmd, which
+// execFileSync/spawnSync cannot exec (spawnSync npx ENOENT) —
+// resolveSpawnCommand reroutes it through node + npx-cli.js, no shell:true.
+//
+// `platform`/`env`/`pathExists` params (defaulting to the real values) exist
+// so tests can exercise the win32 branch without mocking node:child_process
+// (its ESM exports are non-configurable) — same idiom as spawnP and
+// localTtsGenerate.
+export function resolveNpxInvocation(
+  argv,
+  opts,
+  platform = process.platform,
+  env = process.env,
+  pathExists = existsSync,
+) {
+  const resolved =
+    platform !== "win32"
+      ? { cmd: "npx", args: argv, opts: { stdio: "ignore", ...opts } }
+      : (() => {
+          const nodeExecPath = env.npm_node_execpath || process.execPath;
+          const npxCliPath = resolveNpxCliPath(env, pathExists);
+          return npxCliPath
+            ? {
+                cmd: nodeExecPath,
+                args: [npxCliPath, ...argv.map((arg) => String(arg))],
+                opts: { stdio: "ignore", windowsHide: true, ...opts },
+              }
+            : null;
+        })();
+  if (!resolved) {
+    // npx-on-win32 with no resolvable npx-cli.js — same terminal condition
+    // spawnP warns about, surfaced as a throw for callers with no fallback.
+    throw new Error(
+      "cannot run npx on Windows: npm's npx-cli.js was not found " +
+        "(install npm with Node, or run via npx/npm run so npm_execpath is set)",
+    );
+  }
+  return resolved;
+}