feat: add Phase 6 — GitHub Push Mirrors

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

phase6_teardown.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# =============================================================================
+# phase6_teardown.sh — Remove push mirror config from all repos
+# For each repo: fetches mirror ID from Gitea, then deletes it.
+# Re-enables GitHub Actions on the source repos.
+# Safe to run if mirrors have already been removed.
+# =============================================================================
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+source "${SCRIPT_DIR}/lib/common.sh"
+
+load_env
+require_vars GITEA_ADMIN_TOKEN GITEA_INTERNAL_URL GITEA_ORG_NAME \
+             GITHUB_USERNAME GITHUB_TOKEN \
+             REPO_1_NAME REPO_2_NAME REPO_3_NAME
+
+log_warn "=== Phase 6 Teardown: Push Mirrors ==="
+
+REPOS=("$REPO_1_NAME" "$REPO_2_NAME" "$REPO_3_NAME")
+
+printf 'This will remove all push mirror configurations. Continue? [y/N] '
+read -r confirm
+if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
+  log_info "Teardown cancelled"
+  exit 0
+fi
+
+for repo in "${REPOS[@]}"; do
+  log_info "--- Processing: ${repo} ---"
+
+  # Get push mirror IDs (there could be multiple, delete all)
+  MIRRORS=$(gitea_api GET "/repos/${GITEA_ORG_NAME}/${repo}/push_mirrors" 2>/dev/null || echo "[]")
+  MIRROR_IDS=$(printf '%s' "$MIRRORS" | jq -r '.[].remote_name' 2>/dev/null || true)
+
+  if [[ -z "$MIRROR_IDS" ]]; then
+    log_info "No push mirrors found for ${repo} — already clean"
+  else
+    for mirror_id in $MIRROR_IDS; do
+      gitea_api DELETE "/repos/${GITEA_ORG_NAME}/${repo}/push_mirrors/${mirror_id}" >/dev/null 2>&1 || true
+      log_success "Removed push mirror '${mirror_id}' from ${repo}"
+    done
+  fi
+
+  # Re-enable GitHub Actions
+  github_api PUT "/repos/${GITHUB_USERNAME}/${repo}/actions/permissions" \
+    '{"enabled": true}' >/dev/null 2>&1 || true
+  log_info "GitHub Actions re-enabled for ${repo}"
+done
+
+log_success "Phase 6 teardown complete"