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)

get-shit-done/workflows/forensics.md

@@ -256,14 +256,14 @@ If actionable anomalies were found (HIGH or MEDIUM confidence):
 If confirmed:
 ```bash
 # Check if "bug" label exists before using it
-BUG_LABEL=$(gh label list --repo gsd-build/get-shit-done --search "bug" --json name -q '.[0].name' 2>/dev/null)
+BUG_LABEL=$(gh label list --repo GSD-redux/get-shit-done-redux --search "bug" --json name -q '.[0].name' 2>/dev/null)
 LABEL_FLAG=""
 if [ -n "$BUG_LABEL" ]; then
   LABEL_FLAG="--label bug"
 fi
 
 gh issue create \
-  --repo gsd-build/get-shit-done \
+  --repo GSD-redux/get-shit-done-redux \
   --title "bug: {concise description from anomaly}" \
   $LABEL_FLAG \
   --body "{formatted findings from report}"