tech(refactor): much nicer code, thx LeSim

root -> rooted_tree

depth_cach -> walk

smal refactor

comment

remove form for header_section

remove seen_at from header section

header_section: champ -> header_section

champ_subree: remove if not

remove root_depth use header_section_level_value instead

remove unused include

remove ChampTreeComponent

rename ChampsSubtreeComponent to SectionComponent

use TreeableConcern only in section component

remove fields_for_champ_component

champs -> tail

add split_section_champ helper

refactor(editable_champ::header_section): keep same interface everywhere

fix(repetition): add spec for SectionComponent on repetitions

app/components/editable_champ/section_component/section_component.html.haml

@@ -0,0 +1,19 @@
+- if render_within_fieldset?
+  = tag.fieldset(class: "reset-#{tag_for_depth}") do
+    = tag.legend do
+      = render EditableChamp::HeaderSectionComponent.new(champ: header_section)
+    - splitted_tail.each do |section, champ|
+      - if section.present?
+        = render section
+      - else
+        = fields_for champ.input_name, champ do |form|
+          = render EditableChamp::EditableChampComponent.new form: ,champ:
+- else
+  - if header_section
+    = render EditableChamp::HeaderSectionComponent.new(champ: header_section)
+  - splitted_tail.each do |section, champ|
+    - if section.present?
+      = render section
+    - else
+      = fields_for champ.input_name, champ do |form|
+        = render EditableChamp::EditableChampComponent.new form: ,champ: