Problem

The shuvcode attach feature that automatically passes the client's current working directory (cwd) to the server via --dir has regressed. This was a fork-specific enhancement that ensured when attaching to a running server, the TUI operates in the directory where the client was launched, not where the server was started.

Current behavior (broken): When running shuvcode attach http://localhost:4096 from /home/user/project, the session operates in the server's launch directory.

Expected behavior: The session should operate in /home/user/project (the client's cwd).

Root Cause

The regression was introduced in commit dee022674 (upstream PR anomalyco#7150 "fix(tui): restore attach session lookup behavior") which changed:

// Before (our fix from 401b498c7)
const directory = process.cwd()
await tui({
  url: args.url,
  args: { sessionID: args.session },
  directory,
})

// After (regressed)
await tui({
  url: args.url,
  args: { sessionID: args.session },
  directory: args.dir ? process.cwd() : undefined,
})

The change makes directory conditional on --dir being explicitly provided, when it should ALWAYS be process.cwd().

Acceptance Criteria

• When attaching without --dir, the client's cwd is passed to the SDK via x-opencode-directory header
• File autocomplete, theme discovery, and exports use the client's directory
• Sessions created via attach operate in the client's directory

Implementation

Restore the behavior from commit 401b498c7:

File: packages/opencode/src/cli/cmd/tui/attach.ts:23-29

handler: async (args) => {
  if (args.dir) process.chdir(args.dir)
  const directory = process.cwd()  // Always capture cwd
  await tui({
    url: args.url,
    args: { sessionID: args.session },
    directory,  // Always pass it
  })
},

Technical Context

The directory flows through:

1. attach.ts → captures process.cwd()
2. app.tsx → passes directory prop to SDKProvider
3. sdk.tsx → passes to createOpencodeClient({ directory })
4. client.ts → sets x-opencode-directory header on all SDK requests

References

• Original fix: 401b498c7 - PR #6715
• Regression commit: dee022674 - upstream PR fix(tui): restore attach session lookup behavior anomalyco/opencode#7150
• Fork feature doc: This should be documented in script/sync/fork-features.json to prevent future regressions