The 2-step stepper on the create modal carried a review step whose only
real signal was a derived "Save $X/mo to hit it on time" hint. Name,
amount, and date are all visible in step 1, so the review step was
re-displaying form values the user just typed.
Collapses both flows into a single panel:
- `_form_stepper.html.erb` + `_form_edit.html.erb` → single
`_form.html.erb` driven by `goal.persisted?` for URL / method /
submit label.
- `goal_stepper_controller.js` → `goal_form_controller.js`. Drops the
step1Panel / step2Panel / step1Indicator / step2Indicator /
step1Circle / step2Circle / stepperLine / reviewName / reviewSummary
/ reviewSuggested / footerLeftButton / footerRightButton / submitButton
target plumbing and the next / back / blockEnter / updateStepperState
/ updateFooter / updateReview methods. Keeps name-validation,
amount-validation, accounts-required validation, avatar-preview-from-
name, and the suggested-pace computation — that one now writes into
an inline `<p data-goal-form-target="suggested">` below the
target_date field instead of the review card.
- `new.html.erb`: drops the `Step 1 of 2 · Goal details` subtitle
target. New `goals.new.subtitle` replaces the two step subtitles.
- `edit.html.erb`: renders the same `form` partial.
- `_color_picker.html.erb`: `data-goal-stepper-target="avatarPreview"`
→ `data-goal-form-target="avatarPreview"` (same Stimulus target,
renamed for the new controller scope).
- `funding_accounts_breakdown_component.rb`: i18n key path moves to
`goals.form.subtypes.*` matching the locale restructure.
- `en.yml`: `goals.form_stepper.step1.fields.*` → `goals.form.fields.*`.
`step2.*` and the `back` / `continue` / `cancel` keys drop. New
`goals.form.create` ("Create goal") + `goals.form.save` ("Save
changes") drive the submit-button label.
UX delta: the user no longer sees a "Step 1 of 2 / Step 2 of 2" beat.
The form is short enough that everything fits in one panel; the only
value-add from the old step 2 — the suggested-pace hint — now updates
live inline as the amount / date / account-count changes.
All 20 `test/controllers/goals_controller_test.rb` tests still pass.
`bundle exec erb_lint` clean on the touched templates.
