refactor(session): fold the session family into packages/session/
git mv the 12 packages from session-persistence/, session-projection/, session-title/, and telemetry/ into one session/ group per the regrouping RFC; merge the four group READMEs into one bilingual triplet; rewrite the group segment in tsconfig references (intra-group references shorten to ../<pkg>), tsconfig.base.json paths/globs, knip.json keys, vitest include, gate scripts, and authored doc/note citations; regenerate module graph, doc graphs, catalogs, and the lockfile importer keys. No npm names change. Full unit suite: 8779 passed; the 18 reported failures reproduce as env flakes (ambient-proxy IPv6 tunneling, watched-dir inotify timeouts under parallel load) — each passes in isolation with NO_PROXY set, matching their known pre-existing behavior on master.
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Tianyi Cui
@@ -2,5 +2,5 @@
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# side as of the last confirmed-consistent state. Both languages carry equal authority;
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# after editing either side, bring the other along and re-record with:
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# pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-06-18-session-surface.md
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2026-06-18-session-surface.md: eeac53534c70099e4102aff9ef226702ea939654
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2026-06-18-session-surface.zh.md: c58d3da049cd6c18e564e596354f5d1831c4756f
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2026-06-18-session-surface.md: 1bb3baac5e9bea3f657cbd3be2623223bda78ce2
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2026-06-18-session-surface.zh.md: bfbfd097ffeca59dec163dff911315d0ed94d028
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@@ -64,9 +64,9 @@ Every surface-eligible event must carry `surfaceOp` or it would disappear from d
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- **`packages/core/session`**: `surface.ts` (`SurfaceManager`) maintains one ordered seq array for candidate acceptance and live projection; `SessionSurface` is its readonly public view. `SurfaceOp`/`SurfaceIntent` and the top-level session-event fields record how entries join it. `append()` requires a `SurfaceIntent` for surface events, `deriveMessages()` walks the surface as the sole derivation path, and `repair.ts` emits surface-aware closers. The seed constructor rejects a surface-eligible seed event missing its `surfaceOp` marker (see § Invariants).
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- **`packages/core/agent-loop`**: All surface-capable appends pass surface opts. Chunk seqs are collected for `assistant/message` provenance; `tool/call` seqs are captured for `tool/result` provenance.
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- **`packages/session-persistence/session-persistence-sqlite`**: Two new nullable TEXT columns (`source_event_seqs`, `surface_op`) on the `events` table; `SCHEMA_VERSION` bumped (bump-and-reject, no migration).
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- **`packages/session-persistence/session-persistence-jsonl`**: No changes required.
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- **`packages/session-persistence/session-persistence`**: Abstract interface unchanged.
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- **`packages/session/session-persistence-sqlite`**: Two new nullable TEXT columns (`source_event_seqs`, `surface_op`) on the `events` table; `SCHEMA_VERSION` bumped (bump-and-reject, no migration).
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- **`packages/session/session-persistence-jsonl`**: No changes required.
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- **`packages/session/session-persistence`**: Abstract interface unchanged.
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The surface is the foundation for future history manipulation. A compaction or tool-result-prune plugin appends one of the existing message-producing event types (a `user/message` carrying the summary, say) with `surfaceOp: { op: 'replace', start, end }` and `sourceEventSeqs` covering the shadowed entries — the new event takes the range's place on the surface while the plugin's own trace events (e.g. `compaction/start`, `compaction/end`) stay off it. Replay preserves the decision deterministically.
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@@ -64,9 +64,9 @@ export type SurfaceOp =
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- **`packages/core/session`**：`surface.ts`（`SurfaceManager`）维护一个用于候选接纳和实时投影的有序 seq 数组；`SessionSurface` 是其只读公共视图。`SurfaceOp`/`SurfaceIntent` 与顶层会话事件字段记录条目如何加入它。`append()` 要求 surface 事件携带 `SurfaceIntent`，`deriveMessages()` 以遍历 surface 作为唯一派生路径，`repair.ts` 则发出 surface 感知的闭合事件。种子构造函数拒绝缺少 `surfaceOp` 标记的可进入 surface 的种子事件（见「不变式」一节）。
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- **`packages/core/agent-loop`**：所有涉及 surface 事件的追加操作都传入 surface 选项。收集分片 seq 用于 `assistant/message` 溯源；捕获 `tool/call` seq 用于 `tool/result` 溯源。
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- **`packages/session-persistence/session-persistence-sqlite`**：`events` 表新增两个可空 TEXT 列（`source_event_seqs`、`surface_op`）；`SCHEMA_VERSION` 递增（bump-and-reject，无迁移）。
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- **`packages/session-persistence/session-persistence-jsonl`**：无需改动。
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- **`packages/session-persistence/session-persistence`**：抽象接口不变。
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- **`packages/session/session-persistence-sqlite`**：`events` 表新增两个可空 TEXT 列（`source_event_seqs`、`surface_op`）；`SCHEMA_VERSION` 递增（bump-and-reject，无迁移）。
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- **`packages/session/session-persistence-jsonl`**：无需改动。
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- **`packages/session/session-persistence`**：抽象接口不变。
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Surface 是未来历史操纵的基础。压缩或 tool-result-prune 插件追加一个既有的消息产出事件类型（例如一条携带摘要的 `user/message`），附带 `surfaceOp: { op: 'replace', start, end }` 和覆盖被遮蔽条目的 `sourceEventSeqs`——新事件在 surface 上取代该范围的位置，而插件自身的 trace 事件（如 `compaction/start`、`compaction/end`）不进入 surface。回放以确定性方式保留该决策。
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@@ -2,5 +2,5 @@
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# side as of the last confirmed-consistent state. Both languages carry equal authority;
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# after editing either side, bring the other along and re-record with:
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# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-21-log-backed-session-titles.md
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2026-07-21-log-backed-session-titles.md: 5f4c53a5fb866663bbfaae6b3fdafb4660424804
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2026-07-21-log-backed-session-titles.zh.md: f9629c1109c8428c74270de9475423d29b99e8f1
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2026-07-21-log-backed-session-titles.md: 89e6e67fb9ece4c087ba7b1bc52e61b78b94586c
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2026-07-21-log-backed-session-titles.zh.md: 4df21be565f57db056f506df477f665908d1fdfa
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@@ -12,7 +12,7 @@ Session identity metadata is immutable, and the event log is the replay and fork
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## Decision
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The [`session-title` capability family](../../../../packages/session-title/README.md) owns title state and generation policy. `@deepseek-ai/dsh-session-title` provides `ctx.sessionTitle`, a deterministic first-message fallback, and a registry for at most one optional asynchronous provider. `@deepseek-ai/dsh-session-title-llm` owns the common auxiliary-model request policy; separate first-message and all-user-messages plugins choose input cadence. The shared agent spine mounts only the fallback service. The Web host mounts that service plus the first-message model provider with explicit overridable limits, so a fresh Web session gains an immediate fallback and then a non-blocking model summary. Other compositions choose either model provider explicitly.
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The [`session-title` capability family](../../../../packages/session/README.md) owns title state and generation policy. `@deepseek-ai/dsh-session-title` provides `ctx.sessionTitle`, a deterministic first-message fallback, and a registry for at most one optional asynchronous provider. `@deepseek-ai/dsh-session-title-llm` owns the common auxiliary-model request policy; separate first-message and all-user-messages plugins choose input cadence. The shared agent spine mounts only the fallback service. The Web host mounts that service plus the first-message model provider with explicit overridable limits, so a fresh Web session gains an immediate fallback and then a non-blocking model summary. Other compositions choose either model provider explicitly.
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### Event ownership and folding
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@@ -12,7 +12,7 @@ Status: implemented
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## 决策
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[`session-title` 功能包族](../../../../packages/session-title/README.md)负责标题状态和生成策略。`@deepseek-ai/dsh-session-title` 提供 `ctx.sessionTitle`、确定性的首消息回退方案，以及一个至多接受单个可选异步提供方的注册表。`@deepseek-ai/dsh-session-title-llm` 负责通用的辅助模型请求策略；首消息插件和全部用户消息插件分别选择输入调度方式。共享 agent 主干只挂载回退服务。Web host 会挂载该服务和首消息模型提供方，并显式设置可覆盖的限制，因此新建的 Web 会话会立即获得回退标题，随后在不阻塞主响应的情况下获得模型摘要。其他组合需显式选择任一模型提供方。
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[`session-title` 功能包族](../../../../packages/session/README.md)负责标题状态和生成策略。`@deepseek-ai/dsh-session-title` 提供 `ctx.sessionTitle`、确定性的首消息回退方案，以及一个至多接受单个可选异步提供方的注册表。`@deepseek-ai/dsh-session-title-llm` 负责通用的辅助模型请求策略；首消息插件和全部用户消息插件分别选择输入调度方式。共享 agent 主干只挂载回退服务。Web host 会挂载该服务和首消息模型提供方，并显式设置可覆盖的限制，因此新建的 Web 会话会立即获得回退标题，随后在不阻塞主响应的情况下获得模型摘要。其他组合需显式选择任一模型提供方。
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### 事件归属与折叠
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# side as of the last confirmed-consistent state. Both languages carry equal authority;
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# after editing either side, bring the other along and re-record with:
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# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-23-session-telemetry-otel-revival.md
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2026-07-23-session-telemetry-otel-revival.md: f83128e8bf62e0718e59912c16c4e449855aaa1a
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2026-07-23-session-telemetry-otel-revival.zh.md: bef3bd9cbc22f363b92880864651dcaa782fc1de
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2026-07-23-session-telemetry-otel-revival.md: e6a213af65451a2ae26a5eb685c1a0f6ab220869
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2026-07-23-session-telemetry-otel-revival.zh.md: 4e834f8b129e2062064cf3497370fecf6f88db29
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@@ -10,7 +10,7 @@ Every deployment that wants harness sessions in an observability stack must hand
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## Decision
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`packages/telemetry/` revives the two reviewed packages under the SDK stance — the harness provides the capability, the deployment configures where records go and owns what leaves in them:
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`packages/session/` (formerly `telemetry/`) revives the two reviewed packages under the SDK stance — the harness provides the capability, the deployment configures where records go and owns what leaves in them:
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- **`@deepseek-ai/dsh-session-telemetry`** — the seam. `TelemetryBackend` (`emit`/`flush?`/`shutdown`), the service-registered `Telemetry` form, and `TelemetryCoordinator` owning capture: live adoption with cursor read-back and the per-append firehose (project → `structuredClone` → redact → `emit`, zero I/O), buffer-free on-demand replay from the canonical log, the fixed first-chunk-per-(turn, step) projection, the live `agent/error` relay, and live dispose-time `shutdown` records.
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- **The `telemetry/record` waterfall** — the delta over the branch version and the seam's redaction extension point. Every record passes it before reaching any backend; the seam ships NO rules of its own — the innermost `next()` is a pass-through, deployments mount their rules as listeners (stacking by transforming `next()`'s return value), and a throwing rule withholds the record fail-closed. Redaction applies to the exported copy only; the canonical log is never rewritten.
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@@ -10,7 +10,7 @@ Status: implemented
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## 决策
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`packages/telemetry/` 以 SDK 立场复活这两个经过评审的包——harness 提供能力，部署方配置上报去向并对导出内容负责：
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`packages/session/`（原 `telemetry/`）以 SDK 立场复活这两个经过评审的包——harness 提供能力，部署方配置上报去向并对导出内容负责：
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- **`@deepseek-ai/dsh-session-telemetry`** —— seam 本体。`TelemetryBackend`（`emit`/`flush?`/`shutdown`）、服务注册形态的 `Telemetry`、以及拥有捕获侧的 `TelemetryCoordinator`：带游标回读的实时收养与逐 append 的 firehose（投影 → `structuredClone` → 脱敏 → `emit`，零 I/O）、从权威日志进行的无缓冲按需回放、固定的每个（轮次、步骤）组合首分片投影、实时 `agent/error` 转发，以及实时 dispose（资源释放）时的 `shutdown` 记录。
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- **`telemetry/record` waterfall（瀑布式事件）** —— 相对分支版本的增量，也是该 seam 的脱敏扩展点。每条记录抵达任何后端前必经此处；seam 自身不带任何规则——最内层 `next()` 原样透传，部署方以监听器挂载自己的规则（通过变换 `next()` 的返回值堆叠），抛异常的规则将该记录 fail-closed 扣下。脱敏只作用于导出副本；canonical log 永不改写。
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@@ -2,5 +2,5 @@
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# side as of the last confirmed-consistent state. Both languages carry equal authority;
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# after editing either side, bring the other along and re-record with:
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# pnpm run verify-translation-pairing --write .agents/notes/implemented/process/2026-07-06-node-engine-floor.md
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2026-07-06-node-engine-floor.md: e42b809f83fe388526ecbd74192989e0bcdbba67
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2026-07-06-node-engine-floor.zh.md: 92fa00f7a270f4506cba6c899e9edf6a2fdd3209
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2026-07-06-node-engine-floor.md: ad21fbfe034cbf4bb7b75aaac4113f3139a1832d
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2026-07-06-node-engine-floor.zh.md: 0d1c31ed74565f9b20116cd0e666246baad9bf79
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@@ -14,7 +14,7 @@ Set `engines.node` to `^22.19.0 || >=24.0.0` and test keyless CI on `['22.19', 2
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Two Node features gate the source runtime:
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- **`node:sqlite`** — `packages/session-persistence/session-persistence-sqlite` does a top-level `import { DatabaseSync } from 'node:sqlite'`. The module dropped its `--experimental-sqlite` flag requirement at **22.13** (LTS) and **23.4** (Current); before those, importing it throws at load.
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- **`node:sqlite`** — `packages/session/session-persistence-sqlite` does a top-level `import { DatabaseSync } from 'node:sqlite'`. The module dropped its `--experimental-sqlite` flag requirement at **22.13** (LTS) and **23.4** (Current); before those, importing it throws at load.
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- **Native TypeScript type-stripping** — the built-mode `examples/headless-agent/tests/keyless-smoke.e2e.ts` smoke boots its unexported `.ts` driver under plain `node` (no tsx) and loads the example's `.ts` test adapter (`cli-mock-llm.ts`). Type-stripping is the default from **22.18** (LTS) and **23.6** (Current); before those it needs `--experimental-strip-types`.
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Those source features clear on the 22.x line at **22.18**, but the installed Pi adapter dependency raises the advertised LTS floor. `@deepseek-ai/dsh-llm-pi-ai` depends on `@earendil-works/pi-ai@0.79.3`, whose package declares `engines.node >=22.19.0`, so the LTS floor is **22.19**. The 24.x branch remains `>=24.0.0`. The disjoint range excludes Node 23 entirely: Node 23.0–23.5 still has at least one flagged source feature, and the 23 line is non-LTS/EOL, so advertising `>=23.6` would add a dead release line and a CI leg no deployment should use.
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@@ -14,7 +14,7 @@ Status: implemented
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两个 Node 特性决定了源码运行时的门槛：
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- **`node:sqlite`**：`packages/session-persistence/session-persistence-sqlite` 在顶层执行 `import { DatabaseSync } from 'node:sqlite'`。该模块在 **22.13**（LTS）和 **23.4**（Current）取消了 `--experimental-sqlite` 标志要求；在此之前，导入它会在加载时抛出异常。
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- **`node:sqlite`**：`packages/session/session-persistence-sqlite` 在顶层执行 `import { DatabaseSync } from 'node:sqlite'`。该模块在 **22.13**（LTS）和 **23.4**（Current）取消了 `--experimental-sqlite` 标志要求；在此之前，导入它会在加载时抛出异常。
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- **原生 TypeScript 类型剥离**——构建模式的 `examples/headless-agent/tests/keyless-smoke.e2e.ts` 冒烟测试使用纯 `node`（无 tsx）启动该示例未导出的 `.ts` driver，并加载示例的 `.ts` 测试适配器（`cli-mock-llm.ts`）。类型剥离从 **22.18**（LTS）和 **23.6**（Current）起成为默认行为；更早版本需要 `--experimental-strip-types`。
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这些源码特性在 22.x 线上于 **22.18** 全部就绪，但已安装的 Pi 适配器依赖将宣传的 LTS 下限进一步提高。`@deepseek-ai/dsh-llm-pi-ai` 依赖 `@earendil-works/pi-ai@0.79.3`，后者的包声明 `engines.node >=22.19.0`，因此 LTS 下限为 **22.19**。24.x 分支保持 `>=24.0.0`。该不相交范围完全排除了 Node 23：Node 23.0–23.5 至少还有一个源码特性需要标志，而 23 线是非 LTS/已 EOL 的，宣传 `>=23.6` 会增加一条已终止的发布线和一条 CI 分支，而没有任何部署应当使用它。
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