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feat(core): persist v2 session context epochs

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This commit is contained in:
Kit Langton 2026-06-04 14:38:31 -04:00
commit 83916f667d
39 changed files with 9302 additions and 79 deletions
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24
packages/core/src/system-context.ts
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@ -49,6 +49,13 @@ export interface Part {
readonly text: string
}
export const PartSchema = Schema.Struct({
key: Key,
text: Schema.String,
})
export const PartsSchema = Schema.Array(PartSchema)
export const CheckpointSchema = Schema.Record(Schema.String, Schema.String)
export type Checkpoint = Readonly<Record<string, string>>
export interface Initialized {
@ -105,11 +112,18 @@ export function initialize(snapshot: Snapshot): Initialized {
export function refresh(snapshot: Snapshot, previous: Checkpoint): Refreshed {
return {
changes: snapshot.entries.flatMap((entry) =>
entry._tag === "Available" && getCheckpoint(previous, entry.key) !== entry.hash
? [{ key: entry.key, text: entry.update }]
: [],
),
changes: [
...snapshot.entries.flatMap((entry) =>
entry._tag === "Available" && getCheckpoint(previous, entry.key) !== entry.hash
? [{ key: entry.key, text: entry.update }]
: [],
),
...Object.keys(previous).flatMap((key) =>
snapshot.entries.some((entry) => entry.key === key)
? []
: [{ key: Key.make(key), text: `System context component removed: ${key}` }],
),
],
checkpoint: nextCheckpoint(snapshot, previous),
}
}