feat: extend bespoke bottles with MCP servers, AGENTS.md, and custom tools #33

Job	Run time
plan	15s
build-local-artifacts (aarch64-apple-darwin)	1m 7s
build-local-artifacts (x86_64-apple-darwin)	2m 22s
build-global-artifacts	18s
host	0s
publish-homebrew-formula	0s
announce	0s
	4m 2s

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