Replace the per-backend install/settings panels with a shared Configure
dialog layout. Introduces ConfigDialogShell + ConfigSection, InstallCommandRow,
and an installStatus badge/status-line module (with tests), and reworks the
Claude, Codex, and opencode Configure dialogs onto it. The settings page now
shows each backend's icon, an install-status badge, and a Configure button,
dropping the old BinaryInstallContent and SimpleBackendSettingsPanel helpers.
Copy is simplified for non-technical users and dialog spacing/dividers are
made consistent.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Adds an "Environment variables" editor to each Agent Mode backend
(Claude, Codex, opencode) so users can inject vars like
CLAUDE_CONFIG_DIR, CODEX_HOME, XDG_CONFIG_HOME, or HTTPS_PROXY without
polluting the parent shell. Overrides are merged onto process.env at
spawn (Codex, opencode) or per prompt() (Claude SDK), and persisted
through a shared sanitizer that enforces POSIX-style names, drops
control chars, and caps the record at 64 entries. The editor debounces
commits to avoid rewriting settings on every keystroke.
Also relocates BinaryPathSetting into src/agentMode/backends/shared/
to honor the agent-mode layer boundaries.
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
