refactor: split oversized files and remove dead code

- Split brew.go → brew_install.go (parallel install logic extracted)
- Split snapshot.go → snapshot_import.go + snapshot_publish.go
- Split selector.go → selector_view.go (rendering separated from model)
- Remove unused testutil helpers (MockExecCommand, CommandResult, AssertCommandSuccess/Failure, GetInstalledBrewPackages)
- Remove dead stubBrewBinary from shell_extra_test.go
- Fix root_test.go: update cfg → installCfg after prior refactor
- Drop stale project.go reference from config package doc

Author: fullstackjam

CLAUDE.md

@@ -42,8 +42,7 @@ cmd/openboot/        # main.go → cli.Execute()
 internal/
   auth/              # OAuth-like login, token in ~/.openboot/auth.json (0600)
   brew/              # Homebrew ops, parallel workers (4 max), retry, uninstall
-  cleaner/           # Diff current vs desired, remove extras
-  cli/               # Cobra cmds: install, snapshot, push, pull, config, login/logout, version, deprecated
+  cli/               # Cobra cmds: install, snapshot, login, logout, version
   config/            # Package catalog + presets + remote fetch (embed fallback in data/)
   diff/              # Pure-logic system-vs-config comparison
   dotfiles/          # Clone + stow with .openboot.bak backup

README.md

@@ -166,10 +166,6 @@ openboot snapshot --local           # Save to ~/.openboot/snapshot.json
 openboot snapshot --publish         # Upload to openboot.dev
 openboot snapshot --import FILE     # Restore from a snapshot file
 
-openboot config list                # List your openboot.dev configs
-openboot config edit                # Open a config in the browser
-openboot config delete SLUG         # Remove a config
-
 openboot login / logout             # openboot.dev auth
 openboot version                    # Print version
 ```

docs/SPEC.md

@@ -19,7 +19,7 @@ Two directions, two verbs:
 - **`install`** — add only. Never uninstalls.
 - **`snapshot`** — output only. Captures current state.
 
-Everything else is cloud-config CRUD (`config list/edit/delete`) or auth/version.
+Everything else is auth/version infrastructure.
 
 ---
 
@@ -32,22 +32,14 @@ Everything else is cloud-config CRUD (`config list/edit/delete`) or auth/version
 | `openboot install [source]` | Add packages / settings from source to this Mac. |
 | `openboot snapshot` | Capture current state (local, cloud, or stdout). |
 
-### Cloud config CRUD
-
-| Command | Purpose |
-|---------|---------|
-| `openboot config list` | List your configs on openboot.dev. |
-| `openboot config edit [slug]` | Open a config in the browser for editing. |
-| `openboot config delete <slug>` | Delete a config. |
-
 ### Infrastructure
 
 | Command | Purpose |
 |---------|---------|
 | `openboot login` / `logout` | Authenticate with openboot.dev. |
 | `openboot version` | Print version. Self-update happens on launch automatically. |
 
-**Total: 8 commands.** (plus `help`, `completion` from Cobra)
+**Total: 5 commands.** (plus `help`, `completion` from Cobra)
 
 ---
 
@@ -163,9 +155,9 @@ preset                               ← Config-only
 | `clean` | **No replacement.** OpenBoot no longer manages removals. |
 | `log` | **No replacement.** Version history dropped. |
 | `restore` | **No replacement.** Version history dropped. |
-| `list` | `config list` |
-| `edit` | `config edit` |
-| `delete` | `config delete` |
+| `list` | **No replacement.** Manage configs at openboot.dev directly. |
+| `edit` | **No replacement.** Manage configs at openboot.dev directly. |
+| `delete` | **No replacement.** Manage configs at openboot.dev directly. |
 | `init` | **No replacement.** Project deps are each ecosystem's own job (npm/pip/go/cargo). |
 | `setup-agent` | **No replacement.** Existed only to service `init`. |
 | `doctor` | **No replacement.** Use `brew doctor` and `git config --list` directly. |