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# `signal_init` remains as an opt-in override for cases the static
# extractor can't see through (e.g. signal initial values that
# reference imported helpers). When supplied for a given slot key
# it takes precedence over the manifest's `ssrDefaults` for that
# child, allowing callers to mix manual overrides with auto-derived
# defaults for siblings.
sub register_components_from_manifest ($self, $manifest, %opts) {
    my $signal_inits = $opts{signal_init} // {};
    my $parent_scope = $self->_scope_id;
    # Weaken the parent capture so the child-renderer closures stored on
    # `$self->_child_renderers` don't keep `$self` alive (the direct
    # closure <-> parent cycle). The controller is reached through `$parent`
    # at call time rather than captured strongly here, so the closures hold
    # no strong reference to `$c` either — see the controller-cycle note in
    # `new`. `$parent` is always live whenever a closure runs (the closure is
    # stored on `$parent`, so `$parent` outlives every invocation).
    weaken(my $parent = $self);

    for my $entry_name (keys %$manifest) {
        # `__barefoot__` is the runtime entry, not a component.
        next if $entry_name eq '__barefoot__';