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feat(session): project the inherited-history boundary into the log

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A plugin owning a standalone open/close bracket cannot tell a dead marker
from a live one: an unmatched `compact/start` reads identically whether the
previous writer died mid-compaction or a compaction is running now.
`Session.firstLiveSeq` already holds that answer exactly, but only in memory.

Append the log-only `session/inherited` event at that seq from the seeded
constructor — the single waist all six seeded-start paths pass through
(resume, configured startup on a persisted id, `sessions.fork()`, a subagent
fork child, `adopt()`'s live prefix, and a bare seeded `create`). Read it
through the new `isInheritedSeq(events, seq)`.

The constructor placement means persistence needs no changes: the marker is
already in `events` when a backend captures the creation seed, so it rides
the ordinary seed path with no load-time write. It also covers fork, where
the inherited bracket's owner may still be running — the case a
persistence-layer boundary could not reach.

Activity ordering excludes the boundary through `lastActivityTime()`, since
lazy resume makes browsing a pickup and the three call sites would otherwise
float every opened session to the top of a picker or list.
This commit is contained in:
Hypatia May
2026-07-30 11:38:51 +08:00
parent 2a53806275
commit b341155652
41 changed files with 850 additions and 122 deletions
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docs/cordis-catalog/services.md
+2 -2
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@@ -1590,7 +1590,7 @@ fork(source: SessionForkSource, boundary?: number, childSessionId?: SessionId):
Types: [CreateSessionOptions](../core-data-structures/persistence.md) · [Session](../core-data-structures/session.md) · [SessionId](../core-data-structures/core.md)
Source: [`packages/core/session/src/index.ts:695`](../../packages/core/session/src/index.ts)
Source: [`packages/core/session/src/index.ts:706`](../../packages/core/session/src/index.ts)
## `ctx.sessionTitle` — `SessionTitleService`
@@ -2197,7 +2197,7 @@ The concrete provider retains pi-tui, focus, and terminal lifecycle state. Plugi
abstract openOverlay(request: TuiOverlayRequest): TuiOverlaySession
```
Source: [`packages/ui/tui/src/index.ts:247`](../../packages/ui/tui/src/index.ts)
Source: [`packages/ui/tui/src/index.ts:248`](../../packages/ui/tui/src/index.ts)
## `ctx.typert` — `TypertRegistry`