Remove basecamp -> basecamp-cli cask rename

[jeremy]

Problem

Users running the documented brew install basecamp/tap/basecamp-cli hit:

Error: basecamp/tap/basecamp-cli: It seems the App source '/Applications/Basecamp 3.app' is not there.

Root cause. This tap's cask_renames.json mapped the token basecamp → basecamp-cli. The rename was legitimate — the CLI was first published here as the cask token basecamp (v0.7.0), then renamed to basecamp-cli in bc7a916 — and was meant to auto-migrate those early installs.

But basecamp collides with the official Basecamp desktop-app cask in homebrew/cask. When a user with the desktop app taps basecamp/tap and installs the CLI, Homebrew sees the rename, treats the installed desktop-app basecamp as an old basecamp-cli, tries to migrate/upgrade it, and fails purging the desktop app's artifacts (/Applications/Basecamp 3.app, gone after upgrading to Basecamp.app 5.x).

Fix

• Remove cask_renames.json so Homebrew stops conflating the desktop app with the CLI. (Homebrew treats a missing file as "no renames".)
• Update README.md to document the explicit --cask install and a brew reinstall recovery command.

Casks/basecamp-cli.rb is untouched (it's GoReleaser-owned and already correct).

Trade-off (accepted)

The handful who installed the CLI as basecamp/tap/basecamp (v0.7.0) lose auto-migration; they re-install as basecamp-cli (covered by the README recovery note). The desktop-app collision — affecting far more users — is eliminated. The CLI is brand new (0.7.0 → 0.7.2), so the migration population is tiny.

Verification

• brew readall basecamp/tap parses the tap cleanly (no output, no errors).
• brew audit --cask --tap basecamp/tap basecamp-cli exits 0.
• With no rename, an installed homebrew/cask basecamp (desktop app) is no longer matched to basecamp/tap/basecamp-cli, so the install proceeds cleanly instead of attempting the desktop-app migration/purge.

Fixes basecamp/basecamp-cli#477

[Copilot]

Pull request overview

This PR removes the basecamp → basecamp-cli cask rename to prevent Homebrew from mistakenly attempting to migrate/purge the official homebrew/cask Basecamp desktop app when users install the Basecamp CLI from this tap, and updates the README with clearer installation/recovery guidance.

Changes:

• Removed cask_renames.json to eliminate the basecamp token collision-driven migration behavior.
• Updated README.md to document brew install --cask basecamp/tap/basecamp-cli and a recovery-oriented reinstall flow.

Tip

If you aren't ready for review, convert to a draft PR.
Click "Convert to draft" or run gh pr ready --undo.
Click "Ready for review" or run gh pr ready to reengage.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
README.md	Clarifies cask-specific install and adds recovery guidance for prior installs/migration errors.
cask_renames.json	Removes the rename mapping that caused collisions with the official desktop-app cask.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.