Release 0.8.4 (#1432)

.changeset/metal-cameras-argue.md

apps/docs/CHANGELOG.md

apps/docs/package.json

apps/next/CHANGELOG.md

apps/next/package.json

packages/autotool/CHANGELOG.md

packages/autotool/examples/01_node/CHANGELOG.md

packages/autotool/examples/01_node/package.json

packages/autotool/examples/02_nextjs/CHANGELOG.md

packages/autotool/examples/02_nextjs/package.json

packages/autotool/package.json

packages/experimental/CHANGELOG.md

packages/experimental/package.json

packages/llamaindex/CHANGELOG.md

...maindex/e2e/examples/cloudflare-worker-agent/CHANGELOG.md

...maindex/e2e/examples/cloudflare-worker-agent/package.json

packages/llamaindex/e2e/examples/nextjs-agent/CHANGELOG.md

packages/llamaindex/e2e/examples/nextjs-agent/package.json

.../llamaindex/e2e/examples/nextjs-edge-runtime/CHANGELOG.md

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