feat: add Phase 4 — Migrate Repos + Fedora mirrors

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

phase4_teardown.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# =============================================================================
+# phase4_teardown.sh — Delete migrated repos from primary + mirrors from Fedora
+# Destructive: permanently deletes repositories.
+# Prompts for confirmation before each deletion.
+# Safe to run if repos have already been deleted (no errors).
+# =============================================================================
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "${SCRIPT_DIR}/lib/common.sh"
+
+load_env
+require_vars GITEA_ADMIN_TOKEN GITEA_BACKUP_ADMIN_TOKEN \
+             GITEA_INTERNAL_URL GITEA_BACKUP_INTERNAL_URL \
+             GITEA_ORG_NAME GITEA_ADMIN_USER \
+             REPO_1_NAME REPO_2_NAME REPO_3_NAME
+
+log_warn "=== Phase 4 Teardown: Repos + Mirrors ==="
+
+REPOS=("$REPO_1_NAME" "$REPO_2_NAME" "$REPO_3_NAME")
+
+printf 'This will DELETE all migrated repos and mirrors. Continue? [y/N] '
+read -r confirm
+if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
+  log_info "Teardown cancelled"
+  exit 0
+fi
+
+for repo in "${REPOS[@]}"; do
+  log_info "--- Tearing down: ${repo} ---"
+
+  # Delete repo from primary (under org)
+  if gitea_api GET "/repos/${GITEA_ORG_NAME}/${repo}" >/dev/null 2>&1; then
+    gitea_api DELETE "/repos/${GITEA_ORG_NAME}/${repo}" >/dev/null || true
+    log_success "Deleted ${GITEA_ORG_NAME}/${repo} from primary"
+  else
+    log_info "Repo ${GITEA_ORG_NAME}/${repo} not found on primary — already deleted"
+  fi
+
+  # Delete mirror from Fedora (under admin user)
+  if gitea_backup_api GET "/repos/${GITEA_ADMIN_USER}/${repo}" >/dev/null 2>&1; then
+    gitea_backup_api DELETE "/repos/${GITEA_ADMIN_USER}/${repo}" >/dev/null || true
+    log_success "Deleted mirror ${GITEA_ADMIN_USER}/${repo} from Fedora"
+  else
+    log_info "Mirror ${GITEA_ADMIN_USER}/${repo} not found on Fedora — already deleted"
+  fi
+done
+
+log_success "Phase 4 teardown complete"