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)

scripts/changeset/cli.cjs

@@ -31,8 +31,8 @@ function parseArgs(argv) {
     fromRef: null,
     toRef: null,
     output: null,
-    repoSlug: 'gsd-build/get-shit-done',
-    installCommand: 'npx get-shit-done-cc@latest',
+    repoSlug: 'GSD-redux/get-shit-done-redux',
+    installCommand: 'npx get-shit-done-redux@latest',
     json: false,
   };
   if (argv.length === 0) return { ok: true, opts };

scripts/changeset/github-release-notes.cjs

@@ -145,8 +145,8 @@ function serializeGithubReleaseNotes({
   ir,
   fromRef,
   toRef,
-  repoSlug = 'gsd-build/get-shit-done',
-  installCommand = 'npx get-shit-done-cc@latest',
+  repoSlug = 'GSD-redux/get-shit-done-redux',
+  installCommand = 'npx get-shit-done-redux@latest',
 }) {
   if (installCommand.includes('`')) {
     throw new Error('installCommand cannot contain backtick characters');