[Bug] assemble() always SKIPs: no stateManager (sessionKey=none) — context compaction never runs via afterTurn

[dailylights]

Summary

The assemble() method is called on every afterTurn but consistently skips with no stateManager (sessionKey=none), because OpenClaw's framework does not pass a sessionKey to the afterTurn hook.

Log Evidence

This appears repeatedly on every turn:

2026-08-09T10:32:38.835+08:00 [plugins] [context-offload] assemble CALLED: msgs=1067, budget=1000000, prompt=none, sessionKey=?
2026-08-09T10:32:38.839+08:00 [plugins] [context-offload] assemble SKIP: no stateManager (sessionKey=none)

Also:

2026-08-09T10:32:38.830+08:00 [plugins] [context-offload] >>> CE.afterTurn CALLED: sessionKey=?

Root Cause

assemble() is reached without a sessionKey, so stateManager cannot be resolved. The assemble() method has a fallback chain (like the compact() fix in #862), but it appears the fallback is not working for the afterTurn path, or the session key is genuinely absent from the hook context.

Impact

• Context compaction never runs via the afterTurn/assemble path
• Context window grows unbounded — the L3 token check shows total=474407 msgCount=1068 utilisation=47.4%, but compaction is skipped
• Memory pressure — the gateway heap grows toward the 608 MiB threshold

Related

• Issue [BUG] /compact fails with 'no_session_manager' — Context Engine compact() receives no sessionKey #862 (same root cause: OpenClaw framework doesn't pass sessionKey) — but [BUG] /compact fails with 'no_session_manager' — Context Engine compact() receives no sessionKey #862 only addresses /compact, this affects the afterTurn path too
• PR fix(offload): resolve session manager from sessionId when sessionKey is missing in compact() #863, fix(offload): resolve session manager in compact() without sessionKey #866, fix: resolve compact session manager without session key #873 (fix the /compact path)

Suggested Fix

• Apply the same sessionKey fallback chain (sessionKey → sessionTarget?.sessionKey → sessionId) to the afterTurn/assemble path
• Verify the OpenClaw afterTurn hook context actually contains a sessionKey or sessionId

[dailylights]

详细根因分析（2026-08-09 更新）

经过深入日志分析，发现 assemble SKIP: no stateManager 不仅影响 context 压缩，还导致了一系列连锁问题：

连锁影响

1. context 压缩从未执行（assemble SKIP）
2. MMD 注入从未成功（injectionReady=false, activeMmdFile=null）
3. L1.5 从未自然 settle（总是 60s 超时 force-settle，然后立即被 L2 覆盖）
4. L2 场景提取从未真正运行（No new L1 records since cursor 或 cold-start skip）
5. L3 检查总是 below_mild（因为 L2 从未产生新场景）
6. OpenClaw 的 context-overflow-precheck 被跳过（context engine "openclaw-context-offload" owns compaction），但 context-offload 的实际压缩从未执行

死锁式问题

OpenClaw 框架: "context-offload 拥有压缩权限，跳过 overflow-precheck"
context-offload: "assemble SKIP: no stateManager (sessionKey=none)"
结果: context 压缩永远不执行，context 无限增长

日志证据

2026-08-09T10:32:38.830+08:00 CE.afterTurn CALLED: sessionKey=?
2026-08-09T10:32:38.839+08:00 assemble SKIP: no stateManager (sessionKey=none)
2026-08-09T10:32:38.974+08:00 CE.afterTurn CALLED: sessionKey=?
2026-08-09T10:32:38.982+08:00 assemble SKIP: no stateManager (sessionKey=none)

影响数据

• context 总大小: 474k tokens, 1068 条消息
• utilisation: 47.4%（未压缩）
• memory pressure: heap 654 MiB / 608 MiB 阈值（107.6%）
• L1 提取超时率: 63%（456/723 次超时）
• L1.5: 从未自然 settle（一直 60s force-settle）
• MMD 注入: 全部失败（injectionReady=false, activeMmdFile=null）
• L2 场景: 从未运行（always No new L1 records）
• recall: 全部 0 hits（hits=0 每次）

根因

afterTurn hook 的 context 中 sessionKey 始终为 ?（undefined），导致 assemble() 无法解析 stateManager。这与 #862 的 /compact 缺 sessionKey 是同一个根因（OpenClaw 框架不传 sessionKey），但影响范围更广。

修复建议

将 #862 的 sessionKey fallback 链（sessionKey → sessionTarget?.sessionKey → sessionId）应用到 afterTurn/assemble 路径。

[Maxwell-Code07]

Thanks for your feedback. We will arrange an internal evaluation as soon as possible and follow up on this matter later.

[dailylights]

与 #862 的关系说明

本 issue 与 #862（/compact fails with no_session_manager）是同一根因的两个表现路径：

• [BUG] /compact fails with 'no_session_manager' — Context Engine compact() receives no sessionKey #862：聚焦 compact() 路径 — OpenClaw 框架调用 compact() 时不传 sessionKey
• 本 issue ([Bug] assemble() always SKIPs: no stateManager (sessionKey=none) — context compaction never runs via afterTurn #878)：聚焦 assemble() / afterTurn 路径 — 同样不传 sessionKey

共同根因：OpenClaw 框架在 Context Engine 回调（compact / assemble / afterTurn）中均未传递 sessionKey。

修复 PR：

• fix(offload): resolve session manager from sessionId when sessionKey is missing in compact() #863 → 修复 compact() 路径（sessionId fallback）
• fix(offload): resolve session manager in assemble() without sessionKey (#878) #882 → 修复 assemble() 路径（sessionKey fallback）

建议：此 issue 可作为 #862 的关联子问题，两者共享同一根因，修复策略一致。请 maintainer 合并评审时一并考虑。