Note

Low Risk
Documentation-only change with no runtime code modifications; risk is limited to potential confusion if the guidance becomes outdated.

Overview
Adds a new Cursor rule doc injected/.cursor/rules/injected-feature-init.mdc documenting critical injected feature init/load special-cases that must be preserved when modifying injected lifecycle/registry code.

The doc explicitly calls out the global-disable bypass for platformSpecificFeatures, the extension-only alwaysInitFeatures behavior (notably cookie), the cookie feature’s early load() wrapper installation and later init() policy finalization, and the extension fallback to bundled feature lists before site.enabledFeatures is available.

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