diff --git a/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.i18n.yaml b/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.i18n.yaml
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+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write
+2026-07-25-session-list-browsing-and-manual-order.md: 586995bf459aeaee88672863977f7acf2a7061a3
+2026-07-25-session-list-browsing-and-manual-order.zh.md: 432d5167a57d30bc04a0b4faf213e4341f07bd2f
diff --git a/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.md b/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.md
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+# Agent Note: Session List Browsing and Manual Workspace Order
+
+Status: implemented
+
+English | [中文](2026-07-25-session-list-browsing-and-manual-order.zh.md)
+
+## Problem
+
+[Workspace UI Complete Product Flow](2026-07-25-workspace-ui-product-flow.md) shipped the first form of the grouped session list and explicitly scoped out operations such as Rename and drag ordering. The design file (figma 239-10458 and its companion screens) has since filled in those interactions: the list must switch to an ungrouped flat view, session rows need a hover detail card and an action menu, workspaces need renaming, and sessions need manual ordering inside their group.
+
+Two existing mechanisms stood in the way. First, the host durably promoted the active session to the front of its workspace account on every `session/event` (activity pinning), so any manual order would be scrambled by the next activity — two ordering authorities cannot coexist. Second, the browsing area was split across two packages: ui-sidebar owned the list, search, and header rows while ui-workspace only borrowed a picker slot for its popover; every new workspace-domain dialog required cross-package wiring, and ownership grew more twisted with each one.
+
+## Decision
+
+### Flat view and viewing state
+
+The group-by menu offers two modes, WorkSpace / In one list. Flat mode renders every session (fork children included) as a top-level row, strictly newest-first by `updatedAt`, with no parent/child adjacency; the Intent placeholder renders as the first row. The mode choice persists in the browser (`dsh.workspace.view`) across reloads.
+
+### Row interactions
+
+- Session rows show a detail card after a 500ms hover dwell (full title / relative time / status line; the status line has only running/idle until the wire grows a status field). The card and the row menu are mutually exclusive: no card while a menu is open or a drag is in flight.
+- Session-row … menu: Rename / Fork session / Delete session, visual-only this iteration; workspace-header … menu: Rename (wired) / Delete workspace (visual-only). Menus close when the pointer leaves them.
+- Supporting primitives: `Menu` gains label entries, danger rows, and `closeOnPointerLeave`; a new `HoverCard` (portaled placement, open delay, disabled guard).
+
+### workspace.rename
+
+`workspace.rename({ workspaceId, title })`: the title is trimmed and must be non-blank; both the same-title no-op and the duplicate check evaluate inside the host's serialized workspace-creation chain (shared with create, so concurrent create/rename cannot interleave a duplicate or an out-of-order fake success), and a conflict returns `workspace-name-conflict`. Durability goes through `setTitle`'s mutate path, and the `domain/changed` listener broadcasts the `host/workspace-changed` frame automatically. The UI is a standard modal with a client-side duplicate pre-check.
+
+### Manual order: insertSessionBefore replaces activity pinning
+
+The `session/event` → `touchSession` activity-pinning chain is deleted wholesale; the workspace account order is now manually owned — new sessions prepend at attach, and explicit reordering goes through `workspace.insertSessionBefore({ workspaceId, sessionId, beforeSessionId? })` (DOM insertBefore semantics: with an anchor it inserts before it, omitted appends to the end). The entity throws a typed `WorkspaceMoveInvalidError` only for unaccounted session/anchor ids; the handler maps exactly that to the business code `workspace-move-invalid`, while storage failures stay internal.
+
+The UI is HTML5 drag on root rows inside a group (workspace grouping only, outside search; fork children ride with their parent and are not draggable). Order authority stays entirely host-side: drop only sends the RPC, the client performs zero local reordering, and the view refreshes from the response upsert and the changed frame; a failed move changes nothing. The client's upsert rejects snapshots older (`updatedAt`) than the installed projection so a late unary response cannot roll back a newer frame.
+
+### Shell/region split
+
+ui-sidebar shrinks to the column-geometry shell: brand row, fold state machine, New Session, Settings, and one `sidebar.workspaces` hole; the shell↔region contract is two facts, `{ wide, expandSidebar }`. ui-workspace fully owns the browsing region (section header, search, grouped tree and flat list, every workspace dialog, drag) plus its groupBy store; the rail-state search/new-workspace icons belong to the region too and request shell expansion via `expandSidebar()`. The picker splits into the core `WorkspaceCreateFlow` (composed directly inside the region) and the thin `WorkspacePicker` wrapper (still filling ui-conversation's hero slot); the old `sidebar.workspace` picker slot and its declaration-aware deferral are deleted with it.
+
+## Alternatives considered
+
+**Keep activity pinning; treat drag as a transient adjustment** — the manual order would be scrambled by the next session activity, making it a fiction; two coexisting ordering authorities cannot be explained to the user. A middle ground — freeze pinning per workspace after the first drag — adds a state tier with murkier semantics; deleting outright is cleaner.
+
+**Numeric index in the reorder payload** — `{ index }` drifts during the drag window: after the host prepends a new session (e.g. Intent materialization) the same index points at a different row. Anchor-style insertBefore is naturally immune to prepends and filtered projections.
+
+**Optimistic reordering on drop** — client-first reordering needs failure rollback, one more entangled state in the object layer; local/LAN round-trips are millisecond-scale, so waiting for the host response is imperceptible. With a single order authority (trust the host completely), the frontend never invents an order.
+
+**Keep the rename dialog in ui-sidebar (smallest change)** — that is the problem itself: workspace-domain dialogs scattered in a borrowed slot, with each addition (the Delete confirmation is coming) repeating the cross-package wiring. Review first considered moving only the rename modal; the ruling was to give the whole browsing region to ui-workspace and leave the shell geometry-only.
+
+**Keep parent/child adjacency in flat mode** — contradicts strict recency (a child newer than its parent's sibling cannot slot adjacently), and the flat view's purpose is dropping the hierarchy; flattening fully and disabling drag in flat mode (no persistence carrier) is more consistent.
+
+## Consequences
+
+- Manual order is the sole authority over the workspace account: an order the user arranges is never scrambled by activity; the cost is losing float-to-top-on-activity, whose signal now rides the row status dot and time label. The `WorkspaceView.sessionIds` wire contract is reworded to the manual-order semantics.
+- The two-fact shell/region contract funnels every future workspace-domain feature (Delete confirmation, cross-group moves, Ungrouped adoption) into the single ui-workspace package; ui-sidebar no longer evolves with session-list features.
+- Flat mode supports neither reordering nor a create-in-workspace entry point (switching back to grouped view is required) — an accepted scope reduction.
+- Wiring the three session-menu items and workspace Delete, and growing the wire status enum, remain future iterations.
+
+## Testing
+
+Package-level suites cover the derivations (deriveGroups/deriveFlat), row components, both apply registrations and passthroughs, host entity move semantics, and the rename/insertSessionBefore RPC implementations with their fixture stubs; the `apps/web` keyless snapshots regress the assembled application; delivery acceptance additionally runs a 12-item playwright (chromium headless) checklist (grouped default, flat switch and persistence, hover-card appearance and suppression, both menus, the full rename chain, drag persistence) and drives the real host over the wire for rename success / duplicate rejection / `workspace-move-invalid`.
diff --git a/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.zh.md b/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.zh.md
index e897903f83..432d5167a5 100644
--- a/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.zh.md
+++ b/.agents/notes/implemented/feature/2026-07-25-session-list-browsing-and-manual-order.zh.md
@@ -6,7 +6,7 @@ Status: implemented
 
 ## Problem
 
-[Workspace UI 完整产品流](2026-07-25-workspace-ui-product-flow.zh.md)交付了分组 session 列表的首个形态,并把 Rename、拖拽排序等操作明确划出当期范围。设计稿(figma 239-10458 及关联画面)随后补齐了这些交互:列表要能切换成不分组的平铺视图、session 行悬停要出详情卡与操作菜单、workspace 要能改名、组内 session 要能手动排序。
+[Workspace UI 完整产品流](2026-07-25-workspace-ui-product-flow.md)交付了分组 session 列表的首个形态,并把 Rename、拖拽排序等操作明确划出当期范围。设计稿(figma 239-10458 及关联画面)随后补齐了这些交互:列表要能切换成不分组的平铺视图、session 行悬停要出详情卡与操作菜单、workspace 要能改名、组内 session 要能手动排序。
 
 两条既有机制挡在前面。其一,host 在每条 `session/event` 上把活跃 session durable 地提到 workspace 账本最前(活动置顶),任何手动排序都会被下一次活动打乱——两种排序权威不可调和。其二,浏览区域被劈在两个包里:ui-sidebar 拥有列表、搜索和组头行,ui-workspace 只借一个 picker 坑放弹层;每加一个 workspace 域的对话框都要跨包接线,归属越来越拧。