feat(cli): rename CLI binary to hypergraph (+ hg alias) and update docs

[marcusrein]

📦 PR Description

Why

• Requested by @cmwhited (see task list below).
• The old command typesync no longer reflects the Hypergraph brand and felt redundant when launching the studio (typesync studio).
• This PR re-brands the CLI to hypergraph, introduces a short alias hg, and updates docs/scripts accordingly.

---

What’s inside

1. CLI rename

   • Root command in apps/typesync/src/Cli.ts → hypergraph
   • Command.run meta updated (name: 'hypergraph')

2. Executable mapping

   // apps/typesync/package.json
   "bin": {
     "hypergraph": "./dist/bin.cjs",
     "hg":         "./dist/bin.cjs"
   }

   • Added matching hypergraph script for local dev.

3. Build artifact update

   • scripts/copy-package-json.ts now copies the same bin map into dist/package.json.

4. Docs

   • README retitled @graphprotocol/hypergraph-cli with new install / usage examples (includes hg).

5. Smoke test

   pnpm run build && pnpm link --global
   hypergraph --help
   hg studio --port 4000 --open=false

6. Alias support

   • Users may type either hypergraph … or hg ….

---

Breaking change?

Yes – typesync is no longer installed.
A migration note will be included in release notes; we can ship a one-version symlink if needed.

---

Full Task List from Chris

• 1 & 2. Rename CLI binary + adjust NPM bin (this PR)
• 3. Fix “open browser” logic (hard-coded Firefox / Arc error)
• 4. Verify local dev workflow (dev:cli, dev:client)
• 5. Add useQueryEntity generator (optional)
• 6. Bundle other async “wins”
• 7. Begin auth / wallet integration for on-chain publish

---

How to test locally

cd apps/typesync
pnpm i
pnpm run build
pnpm link --global        # ensure $PNPM_HOME is on PATH
hypergraph --help
hg studio --open=false --port 4000

---

This PR fully delivers items #1 and #2 of the task list.

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[nikgraf]

nice! thanks

[marcusrein]

Renamed “studio” → “typesync” in our CLI

• Renamed the studio sub-command to typesync
• Installation package renamed to @graphprotocol/typesync-cli
• Binaries now invoked as:

hypergraph typesync
hg typesync

• All examples in apps/typesync/README.md updated to reflect the new command name and flags (--port, --open, --browser)
• No other functionality or flags were changed—only the command name and docs

This brings the CLI name in line with its core “typesync” functionality and removes any leftover “studio” terminology.