diff --git a/packages/opencode/src/cli/cmd/tui/app.tsx b/packages/opencode/src/cli/cmd/tui/app.tsx
index 2ec1fb703f9..13203bf76df 100644
--- a/packages/opencode/src/cli/cmd/tui/app.tsx
+++ b/packages/opencode/src/cli/cmd/tui/app.tsx
@@ -302,6 +302,13 @@ function App() {
         const current = promptRef.current
         // Don't require focus - if there's any text, preserve it
         const currentPrompt = current?.current?.input ? current.current : undefined
+
+        const currentSessionID = route.data.type === "session" ? route.data.sessionID : undefined
+        
+        // Store the last session ID so we can return to it easily (ephemeral, per-process)
+        if (currentSessionID) {
+          kv.setEphemeral("last_session_id", currentSessionID)
+        }
         route.navigate({
           type: "home",
           initialPrompt: currentPrompt,
diff --git a/packages/opencode/src/cli/cmd/tui/component/dialog-session-list.tsx b/packages/opencode/src/cli/cmd/tui/component/dialog-session-list.tsx
index 85c174c1dcb..7b2987da896 100644
--- a/packages/opencode/src/cli/cmd/tui/component/dialog-session-list.tsx
+++ b/packages/opencode/src/cli/cmd/tui/component/dialog-session-list.tsx
@@ -1,10 +1,11 @@
 import { useDialog } from "@tui/ui/dialog"
-import { DialogSelect } from "@tui/ui/dialog-select"
+import { DialogSelect, type DialogSelectRef } from "@tui/ui/dialog-select"
 import { useRoute } from "@tui/context/route"
 import { useSync } from "@tui/context/sync"
 import { createMemo, createSignal, createResource, onMount, Show } from "solid-js"
 import { Locale } from "@/util/locale"
 import { useKeybind } from "../context/keybind"
+import { Keybind } from "@/util/keybind"
 import { useTheme } from "../context/theme"
 import { useSDK } from "../context/sdk"
 import { DialogSessionRename } from "./dialog-session-rename"
@@ -23,6 +24,7 @@ export function DialogSessionList() {
 
   const [toDelete, setToDelete] = createSignal<string>()
   const [search, setSearch] = createDebouncedSignal("", 150)
+  const [selectRef, setSelectRef] = createSignal<DialogSelectRef<string>>()
 
   const [searchResults] = createResource(search, async (query) => {
     if (!query) return undefined
@@ -30,39 +32,76 @@ export function DialogSessionList() {
     return result.data ?? []
   })
 
+  const deleteKeybind = "ctrl+d"
+  const pinKeybind = "ctrl+b"
   const currentSessionID = createMemo(() => (route.data.type === "session" ? route.data.sessionID : undefined))
 
   const spinnerFrames = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]
 
-  const sessions = createMemo(() => searchResults() ?? sync.data.session)
+  const sessions = createMemo(() => {
+    const results = searchResults()
+    if (!results) return sync.data.session
+    return results.map((result) => {
+      const live = sync.data.session.find((s) => s.id === result.id)
+      return live ?? result
+    })
+  })
+
+  const defaultSessionID = createMemo(() => {
+    const lastSessionID = kv.getEphemeral("last_session_id")
+
+    // First try last session we were in (ephemeral, per-process)
+    if (lastSessionID) {
+      const session = sessions().find((s) => s.id === lastSessionID)
+      if (session) return session.id
+    }
+
+    // Fallback to most recently updated session
+    const allSessions = sessions().filter((x) => x.parentID === undefined)
+    const sorted = allSessions.toSorted((a, b) => b.time.updated - a.time.updated)
+    return sorted[0]?.id
+  })
+
 
   const options = createMemo(() => {
     const today = new Date().toDateString()
-    return sessions()
-      .filter((x) => x.parentID === undefined)
+    const allSessions = sessions().filter((x) => x.parentID === undefined)
+
+    const pinned = allSessions
+      .filter((x) => x.time.pinned !== undefined)
+      .toSorted((a, b) => (b.time.pinned ?? 0) - (a.time.pinned ?? 0))
+
+    const unpinned = allSessions
+      .filter((x) => x.time.pinned === undefined)
       .toSorted((a, b) => b.time.updated - a.time.updated)
-      .map((x) => {
-        const date = new Date(x.time.updated)
-        let category = date.toDateString()
-        if (category === today) {
-          category = "Today"
-        }
-        const isDeleting = toDelete() === x.id
-        const status = sync.data.session_status?.[x.id]
-        const isWorking = status?.type === "busy"
-        return {
-          title: isDeleting ? `Press ${keybind.print("session_delete")} again to confirm` : x.title,
-          bg: isDeleting ? theme.error : undefined,
-          value: x.id,
-          category,
-          footer: Locale.time(x.time.updated),
-          gutter: isWorking ? (
-            <Show when={kv.get("animations_enabled", true)} fallback={<text fg={theme.textMuted}>[⋯]</text>}>
-              <spinner frames={spinnerFrames} interval={80} color={theme.primary} />
-            </Show>
-          ) : undefined,
-        }
-      })
+
+    const mapSession = (session: typeof allSessions[number], category: string, showDate: boolean) => {
+      const isDeleting = toDelete() === session.id
+      const status = sync.data.session_status?.[session.id]
+      const isWorking = status?.type === "busy"
+      return {
+        title: isDeleting ? `Press ${keybind.print("session_delete")} again to confirm` : session.title,
+        bg: isDeleting ? theme.error : undefined,
+        value: session.id,
+        category,
+        footer: showDate ? Locale.shortDateTime(session.time.updated) : Locale.time(session.time.updated),
+        gutter: isWorking ? (
+          <Show when={kv.get("animations_enabled", true)} fallback={<text fg={theme.textMuted}>[⋯]</text>}>
+            <spinner frames={spinnerFrames} interval={80} color={theme.primary} />
+          </Show>
+        ) : undefined,
+      }
+    }
+
+    const pinnedOptions = pinned.map((x) => mapSession(x, "Bookmarks", true))
+
+    const unpinnedOptions = unpinned.map((x) => {
+      const date = new Date(x.time.updated)
+      const category = date.toDateString() === today ? "Today" : date.toDateString()
+      return mapSession(x, category, false)
+    })
+
+    return [...pinnedOptions, ...unpinnedOptions]
   })
 
   onMount(() => {
@@ -71,10 +110,11 @@ export function DialogSessionList() {
 
   return (
     <DialogSelect
+      ref={setSelectRef}
       title="Sessions"
       options={options()}
       skipFilter={true}
-      current={currentSessionID()}
+      current={currentSessionID() ?? defaultSessionID()}
       onFilter={setSearch}
       onMove={() => {
         setToDelete(undefined)
@@ -108,6 +148,20 @@ export function DialogSessionList() {
             dialog.replace(() => <DialogSessionRename session={option.value} />)
           },
         },
+        {
+          keybind: Keybind.parse(pinKeybind)[0],
+          title: "bookmark",
+          onTrigger: async (option) => {
+            const session = sessions().find((s) => s.id === option.value)
+            if (!session) return
+            const isPinned = session.time.pinned !== undefined
+            await sdk.client.session.update({
+              sessionID: option.value,
+              time: { pinned: isPinned ? null : Date.now() },
+            })
+            selectRef()?.scrollToValue(option.value)
+          },
+        },
       ]}
     />
   )
diff --git a/packages/opencode/src/cli/cmd/tui/context/kv.tsx b/packages/opencode/src/cli/cmd/tui/context/kv.tsx
index 651c2dbc0c7..09c2ba50ecc 100644
--- a/packages/opencode/src/cli/cmd/tui/context/kv.tsx
+++ b/packages/opencode/src/cli/cmd/tui/context/kv.tsx
@@ -9,6 +9,7 @@ export const { use: useKV, provider: KVProvider } = createSimpleContext({
   init: () => {
     const [ready, setReady] = createSignal(false)
     const [store, setStore] = createStore<Record<string, any>>()
+    const ephemeral: Record<string, any> = {}
     const file = Bun.file(path.join(Global.Path.state, "kv.json"))
 
     file
@@ -46,6 +47,12 @@ export const { use: useKV, provider: KVProvider } = createSimpleContext({
         setStore(key, value)
         Bun.write(file, JSON.stringify(store, null, 2))
       },
+      getEphemeral(key: string, defaultValue?: any) {
+        return ephemeral[key] ?? defaultValue
+      },
+      setEphemeral(key: string, value: any) {
+        ephemeral[key] = value
+      },
     }
     return result
   },
diff --git a/packages/opencode/src/cli/cmd/tui/ui/dialog-select.tsx b/packages/opencode/src/cli/cmd/tui/ui/dialog-select.tsx
index f1cdaaa5292..dcc08c283d3 100644
--- a/packages/opencode/src/cli/cmd/tui/ui/dialog-select.tsx
+++ b/packages/opencode/src/cli/cmd/tui/ui/dialog-select.tsx
@@ -44,6 +44,7 @@ export interface DialogSelectOption<T = any> {
 export type DialogSelectRef<T> = {
   filter: string
   filtered: DialogSelectOption<T>[]
+  scrollToValue: (value: T) => void
 }
 
 export function DialogSelect<T>(props: DialogSelectProps<T>) {
@@ -54,20 +55,6 @@ export function DialogSelect<T>(props: DialogSelectProps<T>) {
     filter: "",
   })
 
-  createEffect(
-    on(
-      () => props.current,
-      (current) => {
-        if (current) {
-          const currentIndex = flat().findIndex((opt) => isDeepEqual(opt.value, current))
-          if (currentIndex >= 0) {
-            setStore("selected", currentIndex)
-          }
-        }
-      },
-    ),
-  )
-
   let input: InputRenderable
 
   const filtered = createMemo(() => {
@@ -193,6 +180,12 @@ export function DialogSelect<T>(props: DialogSelectProps<T>) {
     get filtered() {
       return filtered()
     },
+    scrollToValue(value: T) {
+      const index = flat().findIndex((opt) => isDeepEqual(opt.value, value))
+      if (index >= 0) {
+        moveTo(index)
+      }
+    },
   }
   props.ref?.(ref)
 
@@ -337,6 +330,7 @@ function Option(props: {
         fg={props.active ? fg : props.current ? theme.primary : theme.text}
         attributes={props.active ? TextAttributes.BOLD : undefined}
         overflow="hidden"
+        wrapMode="none"
         paddingLeft={3}
       >
         {Locale.truncate(props.title, 61)}
diff --git a/packages/opencode/src/server/routes/session.ts b/packages/opencode/src/server/routes/session.ts
index a98624dfae2..9fd6cf2b63c 100644
--- a/packages/opencode/src/server/routes/session.ts
+++ b/packages/opencode/src/server/routes/session.ts
@@ -268,6 +268,7 @@ export const SessionRoutes = lazy(() =>
           time: z
             .object({
               archived: z.number().optional(),
+              pinned: z.number().nullable().optional(),
             })
             .optional(),
         }),
@@ -281,6 +282,7 @@ export const SessionRoutes = lazy(() =>
             session.title = updates.title
           }
           if (updates.time?.archived !== undefined) session.time.archived = updates.time.archived
+          if (updates.time?.pinned !== undefined) session.time.pinned = updates.time.pinned ?? undefined
         })
 
         return c.json(updatedSession)
diff --git a/packages/opencode/src/session/index.ts b/packages/opencode/src/session/index.ts
index 3fcdab5238c..ccd726d3de1 100644
--- a/packages/opencode/src/session/index.ts
+++ b/packages/opencode/src/session/index.ts
@@ -66,6 +66,7 @@ export namespace Session {
         updated: z.number(),
         compacting: z.number().optional(),
         archived: z.number().optional(),
+        pinned: z.number().optional(),
       }),
       permission: PermissionNext.Ruleset.optional(),
       revert: z
diff --git a/packages/opencode/src/util/locale.ts b/packages/opencode/src/util/locale.ts
index 653da09a0b7..89bf4a3bb82 100644
--- a/packages/opencode/src/util/locale.ts
+++ b/packages/opencode/src/util/locale.ts
@@ -28,6 +28,12 @@ export namespace Locale {
     }
   }
 
+  export function shortDateTime(input: number): string {
+    const date = new Date(input)
+    const dateStr = date.toLocaleDateString(undefined, { month: "short", day: "numeric" })
+    return `${dateStr}, ${time(input)}`
+  }
+
   export function number(num: number): string {
     if (num >= 1000000) {
       return (num / 1000000).toFixed(1) + "M"
diff --git a/packages/sdk/js/src/v2/gen/sdk.gen.ts b/packages/sdk/js/src/v2/gen/sdk.gen.ts
index 6f699319965..4cc41ffa342 100644
--- a/packages/sdk/js/src/v2/gen/sdk.gen.ts
+++ b/packages/sdk/js/src/v2/gen/sdk.gen.ts
@@ -904,6 +904,7 @@ export class Session extends HeyApiClient {
       title?: string
       time?: {
         archived?: number
+        pinned?: number | null
       }
     },
     options?: Options<never, ThrowOnError>,
diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
index e47c4f5f7f1..aed0d14cbd5 100644
--- a/packages/sdk/js/src/v2/gen/types.gen.ts
+++ b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -742,6 +742,7 @@ export type Session = {
     updated: number
     compacting?: number
     archived?: number
+    pinned?: number
   }
   permission?: PermissionRuleset
   revert?: {
@@ -2778,6 +2779,7 @@ export type SessionUpdateData = {
     title?: string
     time?: {
       archived?: number
+      pinned?: number | null
     }
   }
   path: {