chore: rebrand to GSD-redux/get-shit-done-redux

Mirror of code, issues, and PRs from the upstream gsd-build/get-shit-done,
which appears compromised or abandoned (maintainer unreachable since
2026-04-01; $GSD token linked to rug-pull).

- Adds rebrand notice block at top of English README
- Removes $GSD token badge and @gsd_foundation X badge (keeps Discord)
- Renames npm packages: get-shit-done-cc -> get-shit-done-redux,
  @gsd-build/sdk -> @gsd-redux/sdk
- Updates all repo URLs across docs, workflows, package.json, bin/
- Updates ci@gsd-build -> ci@gsd-redux in workflow git identities
- Leaves CHANGELOG and .changeset/* alone (historical, time-stamped)

docs/pt-BR/CLI-TOOLS.md

@@ -1,7 +1,7 @@
 # Referência de Ferramentas CLI
 
 Resumo em Português das ferramentas CLI do GSD.  
-Para API completa (assinaturas, argumentos e comportamento detalhado), consulte [CLI-TOOLS.md em inglês](../CLI-TOOLS.md) — inclui a secção **SDK and programmatic access** (`gsd-sdk query`, `@gsd-build/sdk`).
+Para API completa (assinaturas, argumentos e comportamento detalhado), consulte [CLI-TOOLS.md em inglês](../CLI-TOOLS.md) — inclui a secção **SDK and programmatic access** (`gsd-sdk query`, `@gsd-redux/sdk`).
 
 ---