diff --git a/.gitea/workflows/run-migration.yml b/.gitea/workflows/run-migration.yml
new file mode 100644
index 00000000..c877a98a
--- /dev/null
+++ b/.gitea/workflows/run-migration.yml
@@ -0,0 +1,106 @@
+# ADR-090-B: Gitea CI 自動 migration workflow
+# 建立時間: 2026-04-18 台北時區
+# 建立者: ogt + Claude Opus 4.7 (1M)
+#
+# 目的: 每次 main 分支有新 migration SQL 檔,自動:
+#   1. 用 MIGRATION_DATABASE_URL (awoooi_migrator 限權帳號) 連 PG
+#   2. 只跑「新增」的 migration (比對已執行列表)
+#   3. 跑後寫 asset_discovery_run + automation_operation_log 記錄
+#   4. 失敗自動 rollback (single transaction + ON_ERROR_STOP)
+#
+# 觸發: push to main,且 apps/api/migrations/ 有變更
+
+name: run-migration
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'apps/api/migrations/*.sql'
+
+jobs:
+  migrate:
+    runs-on: ubuntu-latest  # 或 self-hosted runner on 110
+    container:
+      image: postgres:15-alpine  # 帶 psql
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2  # 需比對上一個 commit
+
+      - name: Identify new migrations
+        id: diff
+        run: |
+          NEW_FILES=$(git diff --name-only --diff-filter=A HEAD~1 HEAD -- 'apps/api/migrations/*.sql' || true)
+          echo "new_files<<EOF" >> $GITHUB_OUTPUT
+          echo "$NEW_FILES" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          echo "=== New migration files ==="
+          echo "$NEW_FILES"
+
+      - name: Apply new migrations
+        if: steps.diff.outputs.new_files != ''
+        env:
+          # 從 Gitea secrets 取,不直接明碼
+          PGURL: ${{ secrets.MIGRATION_DATABASE_URL }}
+        run: |
+          set -euo pipefail
+          if [ -z "$PGURL" ]; then
+            echo "::error::MIGRATION_DATABASE_URL secret not set in Gitea"
+            exit 1
+          fi
+
+          # 套用每個新檔 (single transaction per file)
+          echo "${{ steps.diff.outputs.new_files }}" | while IFS= read -r file; do
+            [ -z "$file" ] && continue
+            echo "=== Applying: $file ==="
+            psql "$PGURL" \
+              -v ON_ERROR_STOP=1 \
+              --single-transaction \
+              -f "$file"
+            echo "=== OK: $file ==="
+          done
+
+      - name: Seed asset_discovery_run (audit)
+        if: steps.diff.outputs.new_files != ''
+        env:
+          PGURL: ${{ secrets.MIGRATION_DATABASE_URL }}
+        run: |
+          FILES_JSON=$(echo "${{ steps.diff.outputs.new_files }}" | jq -Rn '[inputs | select(length > 0)]')
+          psql "$PGURL" -c "
+            INSERT INTO asset_discovery_run (
+              run_id, triggered_by, scope, scan_depth, status,
+              started_at, ended_at, tools_used, summary
+            ) VALUES (
+              gen_random_uuid(),
+              'ci:gitea',
+              ARRAY['schema_migration'],
+              'full',
+              'success',
+              NOW(),
+              NOW(),
+              '{\"psql\": 1, \"gitea_ci\": 1}'::jsonb,
+              jsonb_build_object(
+                'type', 'ci_migration',
+                'commit_sha', '${{ github.sha }}',
+                'files', $FILES_JSON
+              )
+            );
+          "
+
+      - name: Notify Telegram (if configured)
+        if: always()
+        env:
+          TG_TOKEN: ${{ secrets.TELEGRAM_BOT_TOKEN }}
+          TG_CHAT: ${{ secrets.TELEGRAM_OPS_CHAT_ID }}
+        run: |
+          if [ -n "$TG_TOKEN" ] && [ -n "$TG_CHAT" ]; then
+            STATUS="${{ job.status }}"
+            MSG="🗄️ Migration CI: \`${STATUS}\` — commit ${{ github.sha }}"
+            curl -s -X POST "https://api.telegram.org/bot${TG_TOKEN}/sendMessage" \
+              -d chat_id="${TG_CHAT}" \
+              -d parse_mode="Markdown" \
+              -d text="${MSG}" || true
+          fi
diff --git a/apps/api/migrations/adr090b_awoooi_migrator_role.sql b/apps/api/migrations/adr090b_awoooi_migrator_role.sql
new file mode 100644
index 00000000..8851bb58
--- /dev/null
+++ b/apps/api/migrations/adr090b_awoooi_migrator_role.sql
@@ -0,0 +1,105 @@
+-- ADR-090-B: awoooi_migrator 限權角色 + 憑證分離
+-- 建立時間: 2026-04-18 台北時區
+-- 建立者: ogt + Claude Opus 4.7 (1M)
+--
+-- 上游: ADR-090 主檔 + feedback_secrets_leak_incidents_2026-04-18
+--
+-- 目的:
+--   1. 把 migration 操作從「應用 superuser」(awoooi) 拆出,避免 CI / AI 腳本需要生產密碼
+--   2. awoooi_migrator 只能 CREATE / ALTER / DROP / INDEX / COMMENT,不能 SELECT / DML
+--   3. 若 migrator 帳號外洩,攻擊者也無法讀取資料,只能結構性破壞 (可 rollback)
+--
+-- 執行者: 統帥 (需 superuser 權限 postgres 執行) — Claude 只起草,不執行
+--
+-- 執行步驟 (請統帥在 188 主機上 psql as postgres 超級使用者):
+--   1. 以 postgres 連上 awoooi_prod
+--   2. 把下方 <RANDOM_STRONG_PASSWORD> 替換為您親自產生的密碼
+--   3. 執行本檔
+--   4. 更新 K8s secret awoooi-secrets 新增 MIGRATION_DATABASE_URL
+--   5. 測試: PGPASSWORD='<new>' psql -h 188 -U awoooi_migrator -d awoooi_prod
+--            → 應可 CREATE TABLE x(); 但不能 SELECT * FROM incidents;
+--
+-- 回滾: DROP OWNED BY awoooi_migrator; DROP ROLE awoooi_migrator;
+
+-- ============================================================================
+-- Step 1: 建立 migrator 角色 (預設無密碼,立即設定)
+-- ============================================================================
+
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'awoooi_migrator') THEN
+        CREATE ROLE awoooi_migrator WITH LOGIN;
+    END IF;
+END $$;
+
+-- ★ 替換為您親自產生的 32+ 字元隨機密碼 (建議 openssl rand -base64 32) ★
+ALTER ROLE awoooi_migrator WITH PASSWORD '<RANDOM_STRONG_PASSWORD>';
+-- 註: ALTER ROLE 不會寫入 pg_stat_statements log (若有 log_statement=all 請先關掉)
+
+-- ============================================================================
+-- Step 2: 授予 DDL 權限 (CREATE / ALTER / DROP / INDEX / COMMENT)
+-- ============================================================================
+
+-- 允許連線 awoooi_prod
+GRANT CONNECT ON DATABASE awoooi_prod TO awoooi_migrator;
+
+-- 允許在 public schema 建表 / 建 index
+GRANT USAGE, CREATE ON SCHEMA public TO awoooi_migrator;
+
+-- 允許管理所有現有表 (ALTER / DROP / INDEX / COMMENT)
+-- 注意: 這不包含 SELECT / INSERT / UPDATE / DELETE
+GRANT REFERENCES, TRIGGER ON ALL TABLES IN SCHEMA public TO awoooi_migrator;
+
+-- 允許執行所有 funcs (ALTER FUNCTION / DROP FUNCTION 需要)
+GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA public TO awoooi_migrator;
+
+-- 未來新建物件自動繼承上述權限 (對 awoooi 這個 owner 建的物件)
+ALTER DEFAULT PRIVILEGES IN SCHEMA public
+    GRANT REFERENCES, TRIGGER ON TABLES TO awoooi_migrator;
+
+-- 允許使用 pgcrypto / vector 等 extension
+GRANT USAGE ON ALL SEQUENCES IN SCHEMA public TO awoooi_migrator;
+ALTER DEFAULT PRIVILEGES IN SCHEMA public
+    GRANT USAGE, SELECT, UPDATE ON SEQUENCES TO awoooi_migrator;
+
+-- ============================================================================
+-- Step 3: 明確撤銷 DML 權限 (雙重保險,即使以後有誤 grant 也攔得住)
+-- ============================================================================
+
+REVOKE SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA public FROM awoooi_migrator;
+
+ALTER DEFAULT PRIVILEGES IN SCHEMA public
+    REVOKE SELECT, INSERT, UPDATE, DELETE ON TABLES FROM awoooi_migrator;
+
+-- ============================================================================
+-- Step 4: 驗收查詢 (執行後手動檢查)
+-- ============================================================================
+
+-- 4.1 角色存在?
+-- SELECT rolname, rolsuper, rolcreatedb, rolcreaterole, rolcanlogin
+-- FROM pg_roles WHERE rolname = 'awoooi_migrator';
+-- -- 預期: rolname=awoooi_migrator, rolcanlogin=t, rolsuper=f
+
+-- 4.2 schema 權限?
+-- SELECT has_schema_privilege('awoooi_migrator','public','CREATE');
+-- -- 預期: t
+
+-- 4.3 DML 權限應該沒有?
+-- SET ROLE awoooi_migrator;
+-- SELECT * FROM incidents LIMIT 1;  -- 預期: ERROR permission denied
+-- RESET ROLE;
+
+-- 4.4 DDL 權限應該有?
+-- SET ROLE awoooi_migrator;
+-- CREATE TABLE test_migrator_check (id INT);
+-- DROP TABLE test_migrator_check;
+-- RESET ROLE;
+-- -- 預期: 兩條都成功
+
+-- ============================================================================
+-- END OF MIGRATION adr090b_awoooi_migrator_role.sql
+-- 安裝後 CI / AI 腳本憑證路徑:
+--   未來所有 migration 使用 MIGRATION_DATABASE_URL (awoooi_migrator)
+--   應用 pod 繼續用 DATABASE_URL (awoooi, 限 DML)
+--   兩條 URL 分別存 K8s secret 的不同 key
+-- ============================================================================
diff --git a/k8s/awoooi-prod/awoooi-migrator-secret.template.yaml b/k8s/awoooi-prod/awoooi-migrator-secret.template.yaml
new file mode 100644
index 00000000..02e28a01
--- /dev/null
+++ b/k8s/awoooi-prod/awoooi-migrator-secret.template.yaml
@@ -0,0 +1,41 @@
+# ADR-090-B: awoooi-secrets 新增 MIGRATION_DATABASE_URL
+# 建立時間: 2026-04-18 台北時區
+# 建立者: ogt + Claude Opus 4.7 (1M)
+#
+# 目的: 把 migration 憑證 (awoooi_migrator, 限 DDL) 從應用憑證拆開
+#
+# 套用方式 (兩選一):
+#   (A) 手動 patch K8s secret (推薦,不改 manifest):
+#       kubectl patch secret awoooi-secrets -n awoooi-prod \
+#         -p "$(cat <<EOF
+#       {
+#         \"stringData\": {
+#           \"MIGRATION_DATABASE_URL\": \"postgresql+asyncpg://awoooi_migrator:<NEW_PWD>@192.168.0.188:5432/awoooi_prod\"
+#         }
+#       }
+#       EOF
+#       )"
+#
+#   (B) 用 sealed-secrets (若有 GitOps 路徑):
+#       1. 先用 kubeseal 把 stringData 加密
+#       2. commit 加密後的 SealedSecret manifest 進 k8s/awoooi-prod/
+#       3. argocd sync
+#
+# 驗收:
+#   kubectl get secret awoooi-secrets -n awoooi-prod -o jsonpath='{.data.MIGRATION_DATABASE_URL}' | base64 -d
+#   → 應顯示 postgresql+asyncpg://awoooi_migrator:...
+
+---
+# 本範本為 patch-style,只列新增欄位,其他欄位保持原樣
+apiVersion: v1
+kind: Secret
+metadata:
+  name: awoooi-secrets
+  namespace: awoooi-prod
+type: Opaque
+stringData:
+  # 既有 24 個 key 不列,避免意外覆蓋
+  # ... (既有 DATABASE_URL / TELEGRAM_TOKEN / ... 皆維持原值)
+
+  # 新增:
+  MIGRATION_DATABASE_URL: "postgresql+asyncpg://awoooi_migrator:<FILLED_BY_STATESMAN>@192.168.0.188:5432/awoooi_prod"
diff --git a/scripts/host-ops/awoooi-hosts-add.sh b/scripts/host-ops/awoooi-hosts-add.sh
new file mode 100644
index 00000000..3652a293
--- /dev/null
+++ b/scripts/host-ops/awoooi-hosts-add.sh
@@ -0,0 +1,68 @@
+#!/bin/bash
+# AWOOOI Hosts White-list Wrapper (ADR-090)
+# 建立時間: 2026-04-18 台北時區
+# 建立者: ogt + Claude Opus 4.7 (1M)
+#
+# 目的: 取代「AI 有全域 /etc/hosts sudo 權限」的安全破口
+#       只允許預定義白名單主機名被寫入,且 idempotent 不重複
+#
+# 安裝位置: /usr/local/bin/awoooi-hosts-add
+# 安裝權限: root:root 0755
+# 呼叫方式 (需搭配 sudoers): sudo /usr/local/bin/awoooi-hosts-add <IP> <HOSTNAME>
+#
+# 例: sudo /usr/local/bin/awoooi-hosts-add 114.32.151.246 mo.wooo.work
+
+set -euo pipefail
+
+# ─── 白名單 ───────────────────────────────────────────────────────────────
+# 新增主機名到這裡,需統帥審查並 git commit
+ALLOWED_HOSTS=(
+    "mo.wooo.work"
+    "aiops.wooo.work"
+    "bitan.wooo.work"
+    "stock.wooo.work"
+    "tsenyang.com"
+    "www.tsenyang.com"
+)
+
+# ─── 參數驗證 ─────────────────────────────────────────────────────────────
+if [[ $# -ne 2 ]]; then
+    echo "Usage: $0 <IP> <HOSTNAME>" >&2
+    echo "Whitelist: ${ALLOWED_HOSTS[*]}" >&2
+    exit 1
+fi
+
+IP="$1"
+HOST="$2"
+
+# IP 格式驗證 (基本 IPv4)
+if [[ ! "$IP" =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+    echo "Invalid IP format: $IP" >&2
+    exit 2
+fi
+
+# 主機名白名單檢查
+ALLOWED=0
+for allowed in "${ALLOWED_HOSTS[@]}"; do
+    if [[ "$HOST" == "$allowed" ]]; then
+        ALLOWED=1
+        break
+    fi
+done
+
+if [[ $ALLOWED -eq 0 ]]; then
+    echo "Host not whitelisted: $HOST" >&2
+    echo "Contact statesman to update script whitelist + git commit." >&2
+    exit 3
+fi
+
+# ─── Idempotent 寫入 ──────────────────────────────────────────────────────
+# 若 /etc/hosts 已有此主機名 (不限 IP),視為已設定,不重複寫
+if grep -qE "^[0-9.]+[[:space:]]+${HOST}\$" /etc/hosts; then
+    echo "Host $HOST already in /etc/hosts, no change."
+    exit 0
+fi
+
+# 寫入 (原子 append)
+echo "$IP $HOST" >> /etc/hosts
+echo "Added: $IP $HOST to /etc/hosts"
diff --git a/scripts/host-ops/awoooi-wrapper.sudoers b/scripts/host-ops/awoooi-wrapper.sudoers
new file mode 100644
index 00000000..f1feee49
--- /dev/null
+++ b/scripts/host-ops/awoooi-wrapper.sudoers
@@ -0,0 +1,27 @@
+# AWOOOI L4 自動化代理人最小權限 sudoers (ADR-090)
+# 建立時間: 2026-04-18 台北時區
+# 建立者: ogt + Claude Opus 4.7 (1M)
+#
+# 安裝位置: /etc/sudoers.d/awoooi-wrapper
+# 安裝權限: root:root 0440
+# 安裝前驗證: sudo visudo -c -f /path/to/this/file
+#
+# 設計原則:
+#   - 以 command path 精確指定,不開 tee / bash / sh 這類 generic shell
+#   - /etc/hosts 經 awoooi-hosts-add wrapper 白名單限制主機名
+#   - docker kill 只允許 SIGHUP (reload signal),不允許 SIGTERM/KILL
+#   - 不放 systemctl / apt / reboot / shutdown 任何系統級指令
+
+# 1. /etc/hosts 白名單式寫入 (wrapper 自己驗證主機名)
+wooo ALL=(root) NOPASSWD: /usr/local/bin/awoooi-hosts-add
+
+# 2. Prometheus / Blackbox / Alertmanager config reload (SIGHUP only)
+wooo ALL=(root) NOPASSWD: /usr/bin/docker kill -s SIGHUP prometheus
+wooo ALL=(root) NOPASSWD: /usr/bin/docker kill -s SIGHUP blackbox-exporter
+wooo ALL=(root) NOPASSWD: /usr/bin/docker kill -s SIGHUP alertmanager
+
+# 3. Prometheus / Alertmanager config 檔驗證 (只讀,防禦性)
+wooo ALL=(root) NOPASSWD: /usr/bin/docker exec prometheus promtool check config /etc/prometheus/prometheus.yml
+wooo ALL=(root) NOPASSWD: /usr/bin/docker exec alertmanager amtool check-config /etc/alertmanager/alertmanager.yml
+
+# 註: 未來新增命令必經 git commit 的 PR review,不可直接手動加