diff --git a/debug-admin-payments-500.md b/debug-admin-payments-500.md
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+# Debug Session: admin-payments-500
+
+Status: [OPEN]
+
+## Symptom
+
+Staging admin payment and package endpoints return HTTP 500. Confirmed example:
+`GET https://staging.jyotisha.chat/api/admin/payments?limit=20&offset=0`
+
+## Constraints
+
+- Do not modify business logic before runtime evidence identifies the root cause.
+- Do not expose database URLs, JWTs, cookies, passwords, or keys.
+- Preserve unrelated dirty workspace files.
+
+## Hypotheses
+
+1. Staging still runs an older SHA and the direct PostgreSQL fix is not deployed.
+2. `ADMIN_DATABASE_URL` is absent or PostgreSQL is unreachable from the web container.
+3. `admin_runtime` lacks SELECT privileges on payment/package/identity tables.
+4. Required staging migrations have not been applied.
+5. The SQL query does not match the staging schema.
+
+## Evidence Log
+
+- Pre-fix staging health reports deployment SHA `dd8e2ad9c7e76d0152b4563c43a45b1e26137035`.
+- Health reports both local business and identity databases as healthy; deployment drift and general database unreachability are rejected.
+- SSH application logs are blocked because this workstation has no staging private key; no server stack trace is claimed.
+- Static migration audit confirms `20260727020000_epay_packages_orders.sql` grants payment objects only to Supabase roles, not `admin_runtime`.
+- Both failing APIs use `ADMIN_DATABASE_URL` through `queryAdminRows`, so the missing grants and RLS policies explain the shared HTTP 500 failure.
+
+## Fix
+
+Added forward migration `20260730010000_admin_payment_permissions.sql` with least privilege:
+
+- package SELECT/INSERT/UPDATE for `admin_runtime`;
+- payment-order SELECT only;
+- matching RLS policies;
+- epay settings SELECT and save-function EXECUTE.
+
+No API business logic was changed.
+
+## Verification
+
+- Pre-fix contract test failed because the permission migration did not exist.
+- Post-fix payment/package/epay contract suite: 21/21 passed.
+- Staging migration and authenticated endpoint smoke are still pending.
diff --git a/debug-gitea-staging-deploy.md b/debug-gitea-staging-deploy.md
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+# Debug Session: gitea-staging-deploy
+
+- Status: OPEN
+- Goal: Complete the Gitea staging workflow and verify the deployed revision and health.
+- Session started: 2026-07-28
+
+## Hypotheses
+
+1. Task 3881 passed fetch and fails during image build or push.
+2. Runner connectivity or repository authentication is intermittently failing.
+3. Base images pull successfully but a later Dockerfile or BuildKit step fails.
+4. Images publish successfully but deployment fails during ACR pull, replacement, or health checks.
+5. Workflow succeeds while staging remains on an older revision due to tag or verification mismatch.
+
+## Evidence
+
+Pending collection from Gitea Actions, runner journal, Docker state, and staging health.
diff --git a/debug-npm-integrity-failure.md b/debug-npm-integrity-failure.md
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+# Debug Session: npm-integrity-failure
+
+Status: [OPEN]
+Started: 2026-07-29
+
+## Symptom
+Gitea staging Web image build fails during `npm ci` for `server-only@0.0.1` with `EINTEGRITY`. The downloaded 477-byte tarball digest differs from `package-lock.json`.
+
+## Constraints
+- Do not modify business logic during evidence collection.
+- Do not expose registry credentials or application secrets.
+- Preserve the current staging deployment until a verified image and migration are ready.
+
+## Hypotheses
+1. The lockfile integrity for `server-only@0.0.1` is incorrect.
+2. The Runner network path receives corrupted or substituted registry bytes.
+3. BuildKit/npm cache contains a corrupted tarball and retries reuse it.
+4. A proxy or registry override affects the Runner despite the npmjs URL in logs.
+5. The upstream tarball changed while registry metadata and lockfile diverged.
+
+## Evidence
+- `package-lock.json` expects `server-only@0.0.1` integrity ending in `GNSg==`.
+- The failed Gitea task downloaded 477 bytes and computed integrity ending in `iswNA==` twice.
+- Current registry metadata reports integrity ending in `iswNA==`.
+- A direct download from `registry.npmjs.org` on xiaoxin is 477 bytes and computes the same integrity ending in `iswNA==`.
+- A clean Docker Hub probe was blocked by an unrelated Docker Hub timeout.
+
+Conclusion: H1/H5 confirmed. The locked integrity is stale relative to the current tarball. H2/H3/H4 are rejected by the consistent direct-download and metadata evidence.
+
+## Fix
+Update only the stale `server-only@0.0.1` integrity entry in `package-lock.json` to the digest proven by registry metadata and direct download.
+
+## Verification
+Pending post-fix workflow.
diff --git a/debug-staging-admin-api-500.md b/debug-staging-admin-api-500.md
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+# Debug Session: staging-admin-api-500
+- **Status**: [OPEN]
+- **Issue**: staging 部署后，支付管理与套餐管理调用后端仍失败；期望两个后台 API 在管理员会话下正常返回。
+- **Debug Server**: pending
+- **Log File**: .dbg/trae-debug-log-staging-admin-api-500.ndjson
+
+## Reproduction Steps
+1. 登录 https://staging.jyotisha.chat/admin。
+2. 打开支付管理，触发 GET /api/admin/payments?limit=20&offset=0。
+3. 打开套餐管理，触发 GET /api/admin/packages。
+4. 记录 HTTP 状态、当前部署 SHA 与 web 容器脱敏错误类别。
+
+## Hypotheses & Verification
+| ID | Hypothesis | Likelihood | Effort | Evidence |
+|----|------------|------------|--------|----------|
+| A | admin_runtime 缺支付/套餐对象权限 | High | Low | Pending：预期 PostgreSQL permission denied |
+| B | staging migration 未执行或仍 pending | High | Low | Pending：预期 migration ledger 缺授权 migration |
+| C | staging 正在运行旧 SHA/旧镜像 | High | Low | Pending：预期 health SHA 与 staging head 不一致 |
+| D | ADMIN_DATABASE_URL 指向错误数据库或角色 | Medium | Medium | Pending：预期 current_user/database 与预期不符 |
+| E | SQL 与 staging schema 不匹配 | Medium | Low | Pending：预期 undefined table/column/function |
+| F | deploy 用户无法直接访问 Docker socket | Confirmed | Low | run 1309：访问 `/var/run/docker.sock` 返回 permission denied；既有自动部署使用 `sudo docker`。 |
+
+## Log Evidence
+| Evidence | Observation |
+|---|---|
+| staging health | 当前部署 SHA 仍为 `dd8e2ad`。 |
+| required permission migration | `d44a414` 尚未部署。 |
+| Gitea migration | run 1309 在远端 Docker 操作失败，错误为 deploy 用户访问 `/var/run/docker.sock` permission denied。 |
+| known privilege boundary | `.gitea/workflows/backend-quality-gate.yml` 的同主机自动部署已使用 `sudo docker`，证明可用边界是非交互 sudo Docker，而不是 docker 组直连。 |
+
+## Verification Conclusion
+Pre-fix 结论：后台 500 的已知权限迁移尚未落库；run 1309 暴露 Docker socket 权限，run 1313 又证明只将 Docker 子命令改为 sudo 仍不足，root-owned 部署树的 mutation lock 会在迁移执行前拒绝 deploy 用户。修复应以 `sudo -n env` 启动整个受控脚本，脚本内直接使用 `docker`，并以 sudo 清理可能成为 root-owned 的 incoming。修复后仍需实际运行迁移、确认 health 切换到目标 SHA，并完成管理员登录态支付/套餐 smoke；在这些证据完成前保持 OPEN。
diff --git a/debug-staging-image-build-failure.md b/debug-staging-image-build-failure.md
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+# Debug Session: staging-image-build-failure
+
+- Status: OPEN
+- Started: 2026-07-28
+- Symptom: Gitea staging workflow fails resolving the API base image with `insufficient_scope`.
+- Expected: staging push builds and publishes API/Web images, then deploys them to jyotisha-staging successfully.
+
+## Hypotheses
+
+1. The Aliyun `library/python` path is not a public mirrored repository.
+2. The authenticated private ACR context is incorrectly reused for the public image endpoint.
+3. The Node base image uses the same invalid mirror pattern.
+4. A stable reachable base-image source or preloaded image exists on xiaoxin.
+5. Further SSH, Compose, or environment failures remain after the image issue.
+
+## Evidence
+
+- Pre-fix Gitea log: `registry.cn-hangzhou.aliyuncs.com/library/python:3.12-slim` returned `pull access denied` and `insufficient_scope`.
+
+## Iterations
+
+- Confirmed both Aliyun `library/python` and `library/node` paths reject pulls.
+- Confirmed direct Docker Hub access times out from xiaoxin.
+- Confirmed complete pulls of `m.daocloud.io/docker.io/library/python:3.12-slim` and `swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/library/node:22-alpine`.
+- Minimal fix: replace only the two Dockerfile base-image sources, preserving Python 3.12 slim and Node 22 alpine variants.
+- Process-tree evidence corrected the initial attribution: the run was blocked in `apt-get update`; the later pip command had not started.
+- Runtime APT benchmark: Aliyun ~0.11s/~1.29 MB/s; Tsinghua ~0.30s/~461 KB/s; Debian official ~1.22s/~115 KB/s.
+- Runtime PyPI benchmark: Aliyun ~0.21s/~350 KB/s; Tsinghua ~0.81s/~90 KB/s; official ~1.20s/~88 KB/s.
+- Added Aliyun Debian and PyPI sources, APT retries and 30-second network timeouts, plus a 60-second pip timeout.
+- npm official and npmmirror throughput were comparable, so no npm source change was made.