[BUG]: Two remote servers with same directory path show identical session list in sidebar #17451

Description

When connecting to two different remote servers (e.g. server A and server B) that both have the same project path (e.g. ~/abc), the desktop app sidebar shows the same session list for both. Switching between servers does not refresh the sessions — they appear identical even though each server has its own independent sessions.

Root cause: the app uses the raw directory string as the sole key for workspace/session state throughout the frontend. There is no server identity component in the key, so server-A:~/abc and server-B:~/abc resolve to the same client-side state bucket.

Affected code (all in packages/app/src):

• context/global-sync.tsx — sdkCache, booting, sessionLoads, sessionMeta maps are all keyed by bare directory
• context/global-sync/child-store.ts — children, vcsCache, metaCache, iconCache, lifecycle/pins all keyed by bare directory
• utils/persist.ts — Persist.workspace() and workspaceStorage() derive storage names from path only (no server component)
• context/server.tsx — projectsKey() collapses all localhost-backed servers to "local", so proxy-based remotes share the same sidebar project namespace

The server-side code is not at fault — it correctly scopes sessions by project ID and workspace context per request.

Steps to reproduce

1. Set up two separate remote opencode servers (server A, server B) each with a project at the same path, e.g. ~/abc
2. Open the desktop app and add both servers
3. Create some sessions on server A's ~/abc
4. Create different sessions on server B's ~/abc
5. Switch between servers in the desktop app
6. Observe the sidebar shows the same session list for both

Screenshot and/or share link

N/A

Operating System

macOS (desktop app, reproducible on any OS)

Terminal

N/A (desktop app)