diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d0490c..65c6299 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,12 +17,29 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   derives the checked set from the model's current value, and renders under both
   themes. `variant:` (`:stack`/`:inline`/`:pill`) is layout-only, no JS.
 
+### Changed
+
+- **Client-side validation Stimulus identifiers dropped the `forms--` prefix**:
+  the bundled controllers now emit `validations--presence`, `validations--length`,
+  … (and the `validations--form` coordinator) so
+  `lazyLoadControllersFrom("phlex_forms/controllers")` resolves them to their
+  shipped path `phlex_forms/controllers/validations/*_controller` — previously
+  `forms--validations--*` derived `.../forms/validations/*`, which 404'd and the
+  controllers never connected (issue #12). The `data-validations--*` binding
+  attributes and the `invalidate:validations` event changed to match. Hosts that
+  registered `forms--validations--*` explicitly must update the identifier.
+
 ### Fixed
 
+- **`f.Radio` / `Field#radio` rendered the model's current value on every radio
+  instead of each radio's own value**: `field_attributes` carried `value:
+  field_value` and was splatted after the explicit positional value, clobbering
+  it — a new record lost the value entirely, an edit form gave every radio the
+  same value. `radio` now drops `field_attributes`' `value` (issue #13).
 - **`Form(validate: true)` never fired client-side validation on submit**: the
   coordinator controller was attached but no `data-action` wired its `onSubmit`
   handler, so submitting an invalid form was not blocked. `apply_validation_coordinator`
-  now emits `submit->forms--validations--form#onSubmit` (joined with any
+  now emits `submit->validations--form#onSubmit` (joined with any
   caller-supplied `data-action`).
 - **`fields_for` iterated a Hash-backed association (JSONB), emitting bogus
   indices**: a Hash responds to `#each_with_index`, so a JSONB column rendered
diff --git a/README.md b/README.md
index f7e10cc..47ad374 100644
--- a/README.md
+++ b/README.md
@@ -337,6 +337,11 @@ import { lazyLoadControllersFrom } from "@hotwired/stimulus-loading"
 lazyLoadControllersFrom("phlex_forms/controllers", application)
 ```
 
+The emitted identifiers are `validations--presence`, `validations--length`, … (and
+the form-level `validations--form` coordinator), which `lazyLoadControllersFrom`
+resolves to `phlex_forms/controllers/validations/*_controller` — the path the gem
+ships them at.
+
 Messages ship for `en` / `fr` / `af`; override via `window.PhlexForms.messages`.
 
 ## Nested attributes, collections & escape valves
diff --git a/app/javascript/phlex_forms/controllers/validations/base_controller.js b/app/javascript/phlex_forms/controllers/validations/base_controller.js
index ed85a56..72e83ee 100644
--- a/app/javascript/phlex_forms/controllers/validations/base_controller.js
+++ b/app/javascript/phlex_forms/controllers/validations/base_controller.js
@@ -10,7 +10,7 @@ import { Controller } from "@hotwired/stimulus"
 // reads from data attributes; the base class only knows about the
 // `allowBlank` / `allowNil` short-circuits.
 export class FieldValidatorController extends Controller {
-  // `error` is opt-in: callers that pre-render a `<p data-forms--validations--error-target="error">`
+  // `error` is opt-in: callers that pre-render a `<p data-validations--<validator>-target="error">`
   // get a stable slot the controller toggles. Inputs without an
   // explicit target still work — the controller lazily creates one
   // adjacent to the input below.
@@ -24,12 +24,12 @@ export class FieldValidatorController extends Controller {
   // directly to <input>, <textarea>, <select> via the form builder.
   connect() {
     this.element.addEventListener("blur", this.onBlur)
-    this.element.addEventListener("invalidate:forms--validations", this.onValidate)
+    this.element.addEventListener("invalidate:validations", this.onValidate)
   }
 
   disconnect() {
     this.element.removeEventListener("blur", this.onBlur)
-    this.element.removeEventListener("invalidate:forms--validations", this.onValidate)
+    this.element.removeEventListener("invalidate:validations", this.onValidate)
   }
 
   onBlur = () => {
@@ -150,7 +150,7 @@ export class FieldValidatorController extends Controller {
     // adjacent to the input. Keeps the framework usable on plain
     // forms that haven't opted into the static-target convention.
     const id = this.element.id || this.element.name
-    const selector = `[data-forms--validations--error="${id}"]`
+    const selector = `[data-validations--error="${id}"]`
     const existing = this.element.closest("form")?.querySelector(selector)
     if (existing) return existing
     if (!create) return null
@@ -159,7 +159,7 @@ export class FieldValidatorController extends Controller {
     container.className = "text-error text-sm mt-1"
     // `dataset` rejects keys with `--`, so we set the attribute
     // directly. The CSS selector still matches.
-    container.setAttribute("data-forms--validations--error", id)
+    container.setAttribute("data-validations--error", id)
     this.element.insertAdjacentElement("afterend", container)
     return container
   }
diff --git a/app/javascript/phlex_forms/controllers/validations/form_controller.js b/app/javascript/phlex_forms/controllers/validations/form_controller.js
index 7062fda..012dc2d 100644
--- a/app/javascript/phlex_forms/controllers/validations/form_controller.js
+++ b/app/javascript/phlex_forms/controllers/validations/form_controller.js
@@ -3,7 +3,7 @@ import { Controller } from "@hotwired/stimulus"
 // Form-level coordinator for the validation framework. Sits on the
 // <form> element and intercepts `submit` to broadcast a synchronous
 // validation event to every field. Each field controller listens
-// for `invalidate:forms--validations`, runs its check, and (on
+// for `invalidate:validations`, runs its check, and (on
 // failure) appends its error to the event's `detail.errors` array.
 // If anything ended up in that array, we cancel the submit and
 // focus the first invalid field.
@@ -23,11 +23,11 @@ export default class extends Controller {
     fields.forEach((field) => {
       const validators = (field.dataset.controller || "")
         .split(/\s+/)
-        .filter((c) => c.startsWith("forms--validations--") && c !== "forms--validations--form")
+        .filter((c) => c.startsWith("validations--") && c !== "validations--form")
       if (validators.length === 0) return
 
       field.dispatchEvent(
-        new CustomEvent("invalidate:forms--validations", {
+        new CustomEvent("invalidate:validations", {
           detail: { errors },
         }),
       )
diff --git a/app/javascript/phlex_forms/controllers/validations/length_controller.js b/app/javascript/phlex_forms/controllers/validations/length_controller.js
index f908476..613d616 100644
--- a/app/javascript/phlex_forms/controllers/validations/length_controller.js
+++ b/app/javascript/phlex_forms/controllers/validations/length_controller.js
@@ -12,7 +12,7 @@ export default class extends FieldValidatorController {
   // Stimulus walks the prototype chain to accumulate `static values`
   // and `static targets`, so we only declare the validator-specific
   // ones here. `counter` is opt-in: callers that pre-render
-  // `<span data-forms--validations--length-target="counter">` get a
+  // `<span data-validations--length-target="counter">` get a
   // stable slot the controller updates. Inputs without an explicit
   // target still get a lazily-injected one (see counterElement).
   static targets = ["counter"]
@@ -80,7 +80,7 @@ export default class extends FieldValidatorController {
 
     // Fallback: cache-by-id lookup or lazy injection for plain forms.
     const id = this.element.id || this.element.name
-    const selector = `[data-forms--validations--counter="${id}"]`
+    const selector = `[data-validations--counter="${id}"]`
     const existing = this.element.closest("form")?.querySelector(selector)
     if (existing) return existing
     if (!create) return null
@@ -88,7 +88,7 @@ export default class extends FieldValidatorController {
     const counter = document.createElement("span")
     counter.className = "text-xs text-base-content/60 ml-auto"
     // `dataset` rejects keys containing `--`; use the raw attribute API.
-    counter.setAttribute("data-forms--validations--counter", id)
+    counter.setAttribute("data-validations--counter", id)
     this.element.insertAdjacentElement("afterend", counter)
     return counter
   }
diff --git a/docs/app/views/docs/pages/client_validation.rb b/docs/app/views/docs/pages/client_validation.rb
index d68121b..2f9d944 100644
--- a/docs/app/views/docs/pages/client_validation.rb
+++ b/docs/app/views/docs/pages/client_validation.rb
@@ -20,7 +20,7 @@ def turning_it_on
     DocsUI::Section("Turning it on") do
       md <<~'MD'
         `validate: true` introspects the model's validators and emits
-        `data-forms--validations--*` bindings per field, plus a form-level
+        `data-validations--*` bindings per field, plus a form-level
         submit coordinator. The form gets `novalidate` — the shipped Stimulus
         controllers own error display, so you never see the inconsistent native
         browser bubbles.
diff --git a/lib/forms/field.rb b/lib/forms/field.rb
index fa23c84..199a0c3 100644
--- a/lib/forms/field.rb
+++ b/lib/forms/field.rb
@@ -67,11 +67,15 @@ def toggle(*modifiers, **)
     end
 
     def radio(value, *modifiers, **options)
+      # field_attributes carries value: field_value (the model's CURRENT value).
+      # Drop it here so it can't clobber this radio's own positional value —
+      # otherwise every radio in the group renders the model's value (issue #13).
+      attrs = field_attributes.except(:value).merge(options)
       theme[:radio].new(
         *modifiers,
         value:,
         checked: field_value == value,
-        **field_attributes.merge(options).merge(id: "#{field_id}_#{value}")
+        **attrs.merge(id: "#{field_id}_#{value}")
       )
     end
     alias radio_button radio
diff --git a/lib/forms/form.rb b/lib/forms/form.rb
index 01df2d3..2240ff9 100644
--- a/lib/forms/form.rb
+++ b/lib/forms/form.rb
@@ -210,13 +210,15 @@ def form_attributes
     # UI (novalidate) — the Stimulus layer owns error display.
     def apply_validation_coordinator(attrs)
       existing = attrs[:data][:controller].to_s
-      coordinator = "forms--validations--form"
+      # Derive the coordinator identifier from the introspector's prefix so the
+      # form-level and field-level controllers can never drift (issue #12).
+      coordinator = "#{Forms::Validations::Introspector::CONTROLLER_PREFIX}--form"
       attrs[:data][:controller] = [existing, coordinator].reject(&:empty?).join(" ")
       # Wire the coordinator's submit handler. Without this data-action the
       # controller connects but onSubmit never fires, so an invalid form is not
       # blocked client-side (issue #11). Joined with any caller-supplied action.
       existing_action = attrs[:data][:action].to_s
-      submit_action = "submit->forms--validations--form#onSubmit"
+      submit_action = "submit->#{coordinator}#onSubmit"
       attrs[:data][:action] = [existing_action, submit_action].reject(&:empty?).join(" ")
       attrs[:novalidate] = true
     end
diff --git a/lib/forms/validations/introspector.rb b/lib/forms/validations/introspector.rb
index fe16dd0..031a161 100644
--- a/lib/forms/validations/introspector.rb
+++ b/lib/forms/validations/introspector.rb
@@ -13,7 +13,11 @@ module Validations
     # validation remains authoritative — the client side just
     # shortens the loop for the common cases.
     class Introspector
-      CONTROLLER_PREFIX = "forms--validations"
+      # The Stimulus identifier prefix. Kept in sync with the file path the
+      # controllers ship at (phlex_forms/controllers/validations/*_controller),
+      # so lazyLoadControllersFrom("phlex_forms/controllers") resolves
+      # `validations--length` → .../validations/length_controller (issue #12).
+      CONTROLLER_PREFIX = "validations"
 
       # Validators we know how to mirror. Keys are the short class
       # name (without namespace), values are the controller suffix
@@ -59,9 +63,9 @@ def initialize(model_class)
 
       # Returns a hash of the shape:
       #   {
-      #     controller: "forms--validations--presence forms--validations--length",
-      #     forms__validations__presence_required_value: "true",
-      #     forms__validations__length_maximum_value: "60",
+      #     controller: "validations--presence validations--length",
+      #     validations__presence_required_value: "true",
+      #     validations__length_maximum_value: "60",
       #   }
       #
       # Returns {} when no supported validators are present.
@@ -95,7 +99,7 @@ def data_attributes_for(attribute)
 
       # Phlex turns underscores in `data:` hash keys into hyphens
       # in the rendered HTML. To produce a key like
-      # `data-forms--validations--length-maximum-value` from a
+      # `data-validations--length-maximum-value` from a
       # Ruby symbol we need every "-" represented as "__" in the
       # symbol. That's what this method builds.
       def data_key(suffix, key)
diff --git a/spec/forms/components_spec.rb b/spec/forms/components_spec.rb
index 0fae54b..2ac480e 100644
--- a/spec/forms/components_spec.rb
+++ b/spec/forms/components_spec.rb
@@ -27,6 +27,44 @@ def render_form_via(model, **args, &block)
     end
   end
 
+  describe "Radio (issue #13)" do
+    it "keeps each radio's own value instead of the model's current value" do
+      # field_attributes carries value: field_value; splatted after the explicit
+      # radio value it used to clobber it, so every radio submitted the model's
+      # value (or, for a new record, nothing).
+      user = build_model(:user, role: nil)
+
+      output = render_form(user) do |f|
+        f.Radio(:role, "manager")
+        f.Radio(:role, "member")
+      end
+
+      expect(output).to include('value="manager"')
+      expect(output).to include('value="member"')
+      expect(output).to include('name="user[role]"')
+    end
+
+    it "checks the radio whose value matches the model, not all of them" do
+      user = build_model(:user, role: "manager")
+
+      output = render_form(user) do |f|
+        f.Radio(:role, "manager")
+        f.Radio(:role, "member")
+      end
+
+      expect(output).to match(/value="manager"[^>]*checked/)
+      expect(output).not_to match(/value="member"[^>]*checked/)
+    end
+
+    it "still lets an explicit value: option win" do
+      user = build_model(:user, role: nil)
+
+      output = render_form(user) { |f| f.Radio(:role, "manager", value: "override") }
+
+      expect(output).to include('value="override"')
+    end
+  end
+
   describe "fields_for (has_many nested attributes)" do
     it "renders indexed nested attribute names" do
       child = Class.new do
@@ -75,31 +113,31 @@ def self.name = "LineItem"
     it "attaches the coordinator + novalidate when validate: true" do
       output = render_form(partner, validate: true, &:submit)
       expect(output).to include("novalidate")
-      expect(output).to include("forms--validations--form")
+      expect(output).to include("validations--form")
     end
 
     it "wires the submit handler via a data-action (issue #11)" do
       # Without this, the coordinator connects but onSubmit is never invoked, so
       # submitting an invalid form is not blocked client-side.
       output = render_form(partner, validate: true, &:submit)
-      expect(output).to include("submit->forms--validations--form#onSubmit")
+      expect(output).to include("submit->validations--form#onSubmit")
     end
 
     it "preserves a caller-supplied data-action alongside the coordinator action" do
       output = render_form(partner, validate: true, data: { action: "click->thing#go" }, &:submit)
       expect(output).to include("click->thing#go")
-      expect(output).to include("submit->forms--validations--form#onSubmit")
+      expect(output).to include("submit->validations--form#onSubmit")
     end
 
     it "wires per-field validator controllers from the model" do
       output = render_form(partner, validate: true) { |f| f.field(:title) }
-      expect(output).to include("forms--validations--presence forms--validations--length")
-      expect(output).to include('data-forms--validations--length-maximum-value="60"')
+      expect(output).to include("validations--presence validations--length")
+      expect(output).to include('data-validations--length-maximum-value="60"')
     end
 
     it "opts a field out with validate: false" do
       output = render_form(partner, validate: true) { |f| f.field(:title, validate: false) }
-      expect(output).not_to include("forms--validations--presence")
+      expect(output).not_to include("validations--presence")
     end
   end
 end
diff --git a/spec/forms/validations/introspector_spec.rb b/spec/forms/validations/introspector_spec.rb
index 538cbf0..802b293 100644
--- a/spec/forms/validations/introspector_spec.rb
+++ b/spec/forms/validations/introspector_spec.rb
@@ -25,41 +25,41 @@ def data_for(attribute, &validations)
 
   it "emits the presence controller and required value" do
     data = data_for(:title) { validates :title, presence: true }
-    expect(data[:controller]).to eq("forms--validations--presence")
-    expect(data[:forms__validations__presence_required_value]).to eq("true")
+    expect(data[:controller]).to eq("validations--presence")
+    expect(data[:validations__presence_required_value]).to eq("true")
   end
 
   it "emits length min/max values" do
     data = data_for(:title) { validates :title, length: { minimum: 3, maximum: 60 } }
-    expect(data[:forms__validations__length_minimum_value]).to eq("3")
-    expect(data[:forms__validations__length_maximum_value]).to eq("60")
+    expect(data[:validations__length_minimum_value]).to eq("3")
+    expect(data[:validations__length_maximum_value]).to eq("60")
   end
 
   it "consolidates multiple validators into one space-joined controller list" do
     data = data_for(:title) { validates :title, presence: true, length: { maximum: 60 } }
-    expect(data[:controller]).to eq("forms--validations--presence forms--validations--length")
+    expect(data[:controller]).to eq("validations--presence validations--length")
   end
 
   it "converts a Ruby regex to a JS-compatible pattern (\\A/\\z -> ^/$)" do
     data = data_for(:title) { validates :title, format: { with: /\A[a-z]+\z/i } }
-    expect(data[:forms__validations__format_pattern_value]).to eq("^[a-z]+$")
-    expect(data[:forms__validations__format_flags_value]).to eq("i")
+    expect(data[:validations__format_pattern_value]).to eq("^[a-z]+$")
+    expect(data[:validations__format_flags_value]).to eq("i")
   end
 
   it "emits numericality bounds" do
     data = data_for(:count) { validates :count, numericality: { greater_than_or_equal_to: 0, only_integer: true } }
-    expect(data[:forms__validations__numericality_greater_than_or_equal_to_value]).to eq("0")
-    expect(data[:forms__validations__numericality_only_integer_value]).to eq("true")
+    expect(data[:validations__numericality_greater_than_or_equal_to_value]).to eq("0")
+    expect(data[:validations__numericality_only_integer_value]).to eq("true")
   end
 
   it "emits inclusion list as JSON" do
     data = data_for(:kind) { validates :kind, inclusion: { in: %w[a b c] } }
-    expect(data[:forms__validations__inclusion_in_value]).to eq('["a","b","c"]')
+    expect(data[:validations__inclusion_in_value]).to eq('["a","b","c"]')
   end
 
   it "emits the confirmation match attribute" do
     data = data_for(:password) { validates :password, confirmation: true }
-    expect(data[:forms__validations__confirmation_match_value]).to eq("password_confirmation")
+    expect(data[:validations__confirmation_match_value]).to eq("password_confirmation")
   end
 
   it "skips validators with :if / :unless / :on (need server context)" do
@@ -74,9 +74,9 @@ def data_for(attribute, &validations)
   describe "paired with ManualRules" do
     it "produces the same data shape from an inline rules hash" do
       data = Forms::Validations::ManualRules.new(length: { maximum: 30 }, presence: true).data_attributes
-      expect(data[:controller]).to include("forms--validations--length")
-      expect(data[:controller]).to include("forms--validations--presence")
-      expect(data[:forms__validations__length_maximum_value]).to eq("30")
+      expect(data[:controller]).to include("validations--length")
+      expect(data[:controller]).to include("validations--presence")
+      expect(data[:validations__length_maximum_value]).to eq("30")
     end
   end
 end