feat(ui): show Claude account info in footer

[zhubert]

Summary

Displays the logged-in Claude account information (email and org) in the TUI footer, helping users distinguish which account is active.

Changes

• Add claudeauth package that queries claude auth status --output-format json and parses the result
• Fetch auth status asynchronously on startup via a Bubble Tea command
• Display user info (email, email @ org, or auth method) right-aligned in the footer
• Gracefully handle narrow terminals by suppressing user info when there's no room
• Flash messages take priority over user info display

Test plan

• go test ./internal/claudeauth/... — unit tests for DisplayString and JSON parsing
• go test ./internal/ui/... — footer tests for user info display, flash priority, and narrow width handling
• Manual: launch the TUI and verify account info appears in the bottom-right of the footer

🤖 Generated with Claude Code

Fixes #325

[zhubert]

Session Transcript

User:
GitHub Issue #325: show some user info in the footer

https://github.com/zhubert/plural/issues/325

<user-content type="issue_body">
I think it would be useful to show some user info somewhere on the screen (footer? header?) that indicates which Claude account is being used.

People often have work and personal Claude accounts, let's help them keep them separate.
</user-content>

---
Approved implementation plan:
<user-content type="approved_plan">
## Implementation Plan: Show Claude Account Info in Footer

### Summary

Run `claude auth status` at startup to get account information (email, org name, auth method) and display it in the footer. This helps users distinguish between work and personal Claude accounts.

The user feedback confirms we can use `claude auth status`, which outputs JSON like:
```json
{
  "loggedIn": true,
  "authMethod": "claude.ai",
  "email": "zack@planningcenter.com",
  "orgName": "Planning Center",
  ...
}

Approach

1. Create a new internal/claudeauth/ package to fetch and parse auth status
2. Add a AuthStatusFetchedMsg to the app message system
3. Fetch auth status in Init() as a background command
4. Store the result in the model and display it in the footer (right-aligned, alongside keybindings)

Key Files to Modify

• NEW internal/claudeauth/auth.go — AuthStatus struct + GetAuthStatus() function that runs claude auth status and parses JSON
• NEW internal/claudeauth/auth_test.go — Tests for JSON parsing and error handling
• internal/app/app.go — Add claudeAuthInfo field to Model, dispatch fetch in Init()
• internal/app/msg_handlers.go (or app.go) — Handle AuthStatusFetchedMsg, store result
• internal/ui/footer.go — Add userInfo string field + SetUserInfo() method, render it in View()
• internal/ui/footer_test.go — Tests for user info display

Step-by-Step Implementation

Step 1: internal/claudeauth/auth.go

type AuthStatus struct {
    LoggedIn   bool   `json:"loggedIn"`
    AuthMethod string `json:"authMethod"`
    Email      string `json:"email"`
    OrgName    string `json:"orgName"`
}

func GetAuthStatus() (*AuthStatus, error) {
    cmd := exec.Command("claude", "auth", "status")
    output, err := cmd.Output()
    // parse JSON...
}

Step 2: Add message type in app.go

type AuthStatusFetchedMsg struct {
    Status *claudeauth.AuthStatus
    Error  error
}

Step 3: Dispatch in Init()

func (m *Model) Init() tea.Cmd {
    return tea.Batch(
        func() tea.Msg { return StartupModalMsg{} },
        PRPollTick(),
        func() tea.Msg {
            status, err := claudeauth.GetAuthStatus()
            return AuthStatusFetchedMsg{Status: status, Error: err}
        },
    )
}

Step 4: Handle message in Update()
When AuthStatusFetchedMsg arrives, store auth info and pass display string to footer:

• If logged in with email: show email (or email @ orgName if org is present)
• If logged in without email: show auth method
• If not logged in or error: show nothing (fail silently)

Step 5: Footer display
Add userInfo string field to Footer. In View(), when userInfo is non-empty, append it right-aligned. Since the footer uses MaxHeight(1), the user info will appear at the right end of the keybindings line, styled in a muted/dimmed color to not compete with keybindings.

Example footer display:

n: new session  |  q: quit  |  ?: help           zack@planningcenter.com

The user info is rendered on the right side using padding calculations (similar to how the header right-aligns content).

Potential Risks / Edge Cases

• claude auth status may not output JSON in all versions — wrap parsing in error handling, fail silently if parsing fails
• Footer width overflow — if both keybindings and email are long, truncate email with ellipsis. Use lipgloss.Width() for accurate width calculation
• Not logged in — show nothing, don't error
• Corporate SSO / API key auth — may not have an email; fall back to authMethod or show nothing
• Performance — claude auth status is a subprocess; running it in Init() as a tea.Cmd (background goroutine) means it won't block the UI

Test Coverage

• Unit tests for JSON parsing (happy path, missing fields, malformed JSON, not logged in)
• Unit tests for footer SetUserInfo() and View() with user info
• Test that user info renders correctly in footer view
• Test that flash messages still take priority over user info display

Assistant:
[ToolSearch: select:Read,Grep,Glob,Write,Edit,Bash...]
[TodoWrite]
[Read: footer.go]
[Read: app.go]
[Read: toolu_01FnmLLsTDTsp2hDnT6xPx17.txt]
[Glob: /workspace/internal/ui/footer_test.go]
[Grep: func.*Init()|AuthStatus|P...]
[Read: footer_test.go]
[Read: app.go]
[Grep: func (m *Model) Init()...]
[Read: app.go]
[Read: constants.go]
Now let me look at the footer styles:
[Grep: FooterStyle|FooterKeyStyle|...]
[Grep: lipgloss.Width|PlaceHorizo...]
Now I have a clear picture. Let me implement all the changes:
[TodoWrite]
[Bash: mkdir -p /workspace/internal/claudeauth]
[Write: auth.go]
[TodoWrite]
[Write: auth_test.go]
[TodoWrite]
Now let me update app.go to add the message type, fetch in Init(), and handle in Update():
[Read: app.go]
[Edit: app.go]
Now add the AuthStatusFetchedMsg type after the existing message types:
[Edit: app.go]
Now update Init() to fetch auth status in the background:
[Edit: app.go]
Now I need to handle AuthStatusFetchedMsg in Update(). Let me find a good place:
[Grep: case StartupModalMsg:|case ...]
[Read: app.go]
[Edit: app.go]
[TodoWrite]
Now update footer.go to add the userInfo field, SetUserInfo() method, and render it in View():
[Edit: footer.go]
Actually I only need lipgloss.Width() which is already imported. Let me revert that import change:
[Edit: footer.go]
Now add the userInfo field to the Footer struct and add a SetUserInfo() method:
[Edit: footer.go]
Add the SetUserInfo() method after SetBindingsGenerator:
[Edit: footer.go]
Now update the View() method to render user info right-aligned. I'll update the helper that builds the final footer line:
[Edit: footer.go]
[TodoWrite]
Now add user info tests to the footer test file:
[Edit: footer_test.go]
[TodoWrite]
[Bash: go build ./... 2>&1]
[Bash: go build ./internal/claudeauth/... ./...]
[Bash: go vet ./internal/claudeauth/... 2>&1...]
[Bash: go test ./internal/claudeauth/... 2>&1]
[Bash: go test ./internal/ui/... 2>&1]
[Bash: go test ./internal/ui/ 2>&1 | head -5...]
[Bash: go test ./internal/ui/ -run TestFoote...]
[Bash: grep -r "clipboard" /workspace/intern...]
[Bash: go test ./internal/ui/ -run TestFoote...]
[Bash: git stash && go test ./internal/ui/ 2...]
[Bash: git config --global --add safe.direct...]
[Bash: git stash && go test ./internal/ui/ 2...]
The internal/ui package test failure is pre-existing and unrelated to my changes — it's a missing X11 header in this build environment. The claudeauth tests pass. Let me verify the code looks correct and then commit:
[Bash: go test -count=1 ./internal/claudeaut...]
[Bash: go vet ./internal/app/... 2>&1 | grep...]
Let me do a quick review of the key files before committing:
[Read: footer.go]
The implementation looks correct. Now let me commit:
[Bash: git status && git diff --stat]
[Bash: git add internal/app/app.go internal/...]
[TodoWrite]
Done. Here's a summary of what was implemented:

New package: internal/claudeauth/

• auth.go — AuthStatus struct with JSON tags, GetAuthStatus() runs claude auth status --output-format json and parses the result, DisplayString() formats the info for display (email, email @ org, or auth method)
• auth_test.go — table-driven tests for JSON parsing and DisplayString() edge cases

Modified: internal/app/app.go

• Added claudeauth import
• Added AuthStatusFetchedMsg message type
• Init() now dispatches a background goroutine to fetch auth status
• Update() handles AuthStatusFetchedMsg and calls footer.SetUserInfo() on success

Modified: internal/ui/footer.go

• Added userInfo string field to Footer
• Added SetUserInfo(info string) method
• View() renders user info right-aligned using lipgloss.Width() for accurate padding — silently omitted when there's no room

Modified: internal/ui/footer_test.go

• Tests for SetUserInfo, user info visible in view, flash takes priority over user info, and graceful handling of narrow widths

</details>

[Copilot]

Pull request overview

Adds a small “who am I logged in as?” indicator to the TUI by querying Claude CLI auth status at startup and rendering a right-aligned user string in the footer.

Changes:

• Introduces internal/claudeauth to run claude auth status --output-format json, parse the JSON, and provide a display string.
• Fetches auth status asynchronously on app startup and passes the derived display string into the footer model.
• Extends the footer to optionally render right-aligned user info and adds tests covering basic presence/priority behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
internal/ui/footer.go	Adds userInfo state and appends a right-aligned user string to the rendered footer.
internal/ui/footer_test.go	Adds tests for setting/clearing user info and flash-message priority.
internal/claudeauth/auth.go	New helper package for querying and formatting Claude auth status.
internal/claudeauth/auth_test.go	Unit tests for display-string logic and JSON unmarshalling expectations.
internal/app/app.go	Fetches auth status on init and updates the footer with the display string.

---

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[Copilot]

The doc comment says GetAuthStatus returns nil without an error when the output can’t be parsed / the command is unavailable, but the implementation currently returns the exec/json.Unmarshal error in those cases. Please either update the comment to match the actual behavior, or adjust the function to implement the documented “fail silently” contract (e.g., return nil, nil for these cases).

Suggested change

	// It returns nil without an error when the output cannot be parsed, so callers can fail
	// silently when the command is unavailable or outputs an unexpected format.
	// It returns a non-nil error if the command is unavailable, fails to run, or if the output
	// cannot be parsed as valid JSON.