Fix TUI crashes from undefined values (#8588, #8579, #8580)

[blueemp]

Summary

Fixes three TUI crash bugs:

#8588 - enabledFormatters undefined

• Problem: TUI crashes with "undefined is not an object (evaluating 'enabledFormatters().length')" when adding MCP server and running /status
• Root cause: sync.data.formatter is undefined during initialization
• Fix: Added null check sync.data.formatter?.filter((f) => f.enabled) ?? []

#8579 - local.agent.current undefined

• Problem: TUI crashes with "undefined is not an object (evaluating 'local.agent.current().name')" during startup
• Root cause: local.agent.current() returns undefined during initialization
• Fix: Created safe memo currentAgent that returns "build" as fallback, used throughout component

#8580 - ECONNRESET error message

• Problem: Users experiencing "socket connection closed unexpectedly" errors get minimal guidance
• Fix: Enhanced error message to include "If this persists, check your network/proxy settings."

Changes

packages/opencode/src/cli/cmd/tui/component/dialog-status.tsx

• Add null check for sync.data.formatter

packages/opencode/src/cli/cmd/tui/component/prompt/index.tsx

• Add currentAgent memo with safe fallback
• Replace all unsafe local.agent.current().name with currentAgent()

packages/opencode/src/cli/cmd/tui/component/dialog-agent.tsx

• Add null check for local.agent.current()?.name

packages/opencode/src/session/message-v2.ts

• Improve ECONNRESET error message with network/proxy guidance

packages/opencode/test/session/retry.test.ts

• Update tests to match new error message format

Testing

• All existing tests pass (11 tests in retry.test.ts)
• Manual verification of null safety patterns

[github-actions]

Hey! Your PR title Fix TUI crashes from undefined values (#8588, #8579, #8580) doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

No duplicate PRs found

The search results show several related historical PRs addressing similar local.agent.current() undefined issues (PRs #7689, #7748, #7747, #7796, #7940, #7920), but these are all closed/merged fixes from earlier development. PR #8635 is a new PR addressing fresh crash bugs (#8588, #8579, #8580) with different root causes and solutions, so it is not a duplicate of any currently open PR.