Merge pinned master into status bar token metrics
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@@ -104,7 +104,9 @@ interface SessionEventMap {
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/**
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* Marks the end of a constructor seed. Events before it have smaller seq
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* values and came from the seed (resume, fork, or replay); this lifecycle
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* produced none of them. This log-only event is the durable projection of
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* produced none of them. An explicitly supplied empty seed puts the marker
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* at seq 0, distinguishing an empty resumed session from a fresh session.
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* This log-only event is the durable projection of
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* {@link Session.firstLiveSeq}. Its payload is empty — position and `time`
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* carry the meaning.
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*
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@@ -384,7 +386,9 @@ declare class Session {
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* start here. Distinct from `header.seedLength`, the DURABLE fork-lineage
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* boundary: a resumed session's constructor seed is its full stored log,
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* while its header keeps the original fork value — this field is the
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* in-process construction fact.
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* in-process construction fact. An explicitly supplied empty seed has the
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* same value as no seed (0); its `session/end-seed` event preserves the
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* lifecycle distinction.
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*
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* Not persisted itself: a seeded session projects it into the log as the
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* `session/end-seed` event, which is what a consumer reading STORED history
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@@ -590,7 +594,7 @@ interface TurnEndReasonMap {
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带种子的会话(恢复、fork 或回放)紧接构造种子之后追加这个仅日志事件,作为自己的第一次实时写入。在它之前的事件具有更小的 seq,且来自种子。它是 `firstLiveSeq` 的持久投影:该字段为持有对象的消费方回答本生命周期的写入从哪里开始,该事件则为只持有存储字节的消费方回答同一问题。payload 为空,因此位置与 `time` 承载全部含义,且不产生任何消息。`Session` 的构造函数是唯一合法的写入方。
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空种子不写入任何内容;种子本身已以 `session/end-seed` 结尾时不会重复标记,因此重新打开一个未被改动的会话不会每次拾起都增长日志。应定位存储历史中的最后一条 `session/end-seed`,而不是假定 `firstLiveSeq` 处一定有一条:在一次没有产生工作的拾起之后,该事件的 seq 会小于下一个生命周期的 `firstLiveSeq`。
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显式传入的空种子会在 seq 0 写入 `session/end-seed`,从而把从空日志恢复的会话与全新会话区分开来。种子本身已以 `session/end-seed` 结尾时不会重复标记,因此重新打开一个未被改动的会话不会每次拾起都增长日志。应定位存储历史中的最后一条 `session/end-seed`,而不是假定 `firstLiveSeq` 处一定有一条:在一次没有产生工作的拾起之后,该事件的 seq 会小于下一个生命周期的 `firstLiveSeq`。
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它之所以必要,是因为种子历史与实时工作在字节层面完全相同,这会让任何拥有独立开/闭括号的插件失效:一个未配对的 `compact/start`,无论写入方是在压缩中途崩溃、还是此刻正在压缩,读起来都一样。在 `session/end-seed` 之前的开启标记来自构造种子,并且属于一个已结束的生命周期,无论结束原因为何(崩溃、进程接替,或从仍在运行的父会话 fork 出来),因此其所有方可以视之为已死。这只覆盖*本*会话继承的括号:另一个并发存活的会话可能在同一段历史上持有开放括号,而它自己的边界在别处,因此容忍并发写入方还需要日志之外的存活信号。核心写入该边界但不从中读取任何内容——括号的词汇表仍归其所属插件,这也正是崩溃修复只关闭轮次/步骤/工具边界而从不处理 `compact/*` 的原因。
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