docs: brew official formula

[zeldrisho]

https://formulae.brew.sh/formula/summarize

[Copilot]

Pull request overview

Updates installation instructions to use the official Homebrew formula (brew install summarize) instead of the custom tap, keeping the Chrome extension/daemon setup docs in sync with the new install path.

Changes:

• Replace brew install steipete/tap/summarize with brew install summarize across user-facing docs.
• Update Homebrew labeling text in README and extension docs to reflect the new command.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
docs/site/docs/chrome-extension.html	Updates the Homebrew install command shown in the rendered docs page.
docs/chrome-extension.md	Updates Homebrew install command (and platform note) in extension quickstart docs.
apps/chrome-extension/README.md	Updates Homebrew install command (and platform note) in the extension’s pairing/daemon setup instructions.
README.md	Updates Homebrew install command in beginner quickstart and Homebrew section.

Comments suppressed due to low confidence (1)

README.md:122

• This paragraph still refers to a “tap formula”, but the install command above is now brew install summarize (no custom tap). Please update the wording to refer to bottle/architecture availability for the official formula (and keep the Intel/x64 guidance consistent).

Homebrew availability depends on the current tap formula for your architecture.
If Homebrew install fails on Intel/x64, use the npm global install above.

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