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fix(app): make session navigation stable and fast (#33569)

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Co-authored-by: Brendan Allan <git@brendonovich.dev>
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Luke Parker 2026-06-24 17:48:54 +10:00 • committed by GitHub
commit a4551a94b4
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29 changed files with 1028 additions and 202 deletions
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64
packages/app/src/components/titlebar.tsx
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@ -2,6 +2,7 @@ import {
createEffect,
createMemo,
createResource,
createRoot,
createSignal,
For,
Match,
@ -512,25 +513,64 @@ export function Titlebar(props: { update?: TitlebarUpdate }) {
)
}
const sdk = createMemo(() => {
const conn = server.list.find((s) => ServerConnection.key(s) === tab.server)
if (!conn) return null
const { sdk } = global.createServerCtx(conn)
return sdk
const serverCtx = createMemo(() => {
const conn = server.list.find((item) => ServerConnection.key(item) === tab.server)
return conn ? global.createServerCtx(conn) : undefined
})
const [session] = createResource(
const sdk = createMemo(() => serverCtx()?.sdk ?? null)
const cachedSession = createMemo(() => {
const placement = global.sessionPlacement.get(tab.server, tab.sessionId)
const ctx = serverCtx()
if (!placement || !ctx) return
return ctx.sync
.child(placement.directory, { bootstrap: false })[0]
.session.find((session) => session.id === tab.sessionId)
})
const [loadedSession] = createResource(
() => {
if (cachedSession()) return null
const id = tab.sessionId
const _sdk = sdk()
if (!_sdk) return null
return { id, sdk: _sdk }
const ctx = serverCtx()
return ctx ? { id, ctx } : null
},
({ id, sdk }) =>
sdk.client.session
({ id, ctx }) =>
ctx.sdk.client.session
.get({ sessionID: id })
.then((x) => x.data)
.then((x) => {
const session = x.data
if (!session) return
if (!session.parentID)
global.sessionPlacement.set({
server: tab.server,
leafID: session.id,
rootID: session.id,
directory: session.directory,
})
return session
})
.catch(() => undefined),
)
const session = createMemo(() => cachedSession() ?? loadedSession())
let prefetched = false
createEffect(() => {
const ctx = serverCtx()
const sess = session()
if (!ctx || !sess || prefetched) return
prefetched = true
createRoot((dispose) => {
try {
void ctx.sync
.createDirSyncContext(sess.directory)
.session.sync(sess.id)
.catch(() => {})
.finally(dispose)
} catch {
dispose()
}
})
})
createEffect(() => {
if (tab.type !== "session") return