refactor(ui): V3 fully square buttons + inputs (rounded-none, brutalist/Swiss aesthetic)

V3 finalizes the radii pass to a fully brutalist/Swiss visual language:

- Buttons (CTAs, submit, secondary, ghost, OAuth provider tiles): rounded-none (0px)
- Form inputs (text/email/password/select/textarea/code-entry): rounded-none (0px)
- Checkboxes: rounded-none (0px) — was rounded-sm
- Small icon tiles (w-10 h-10 / w-12 h-12 grad-bg squares): rounded-none (0px)
- Inline code blocks (totp recovery <pre>, secret <code>): rounded-none (0px)
- Cards (pricing, bento, content panels, modals, prev/next nav): rounded (4px) — was rounded-lg
- Alert / flash boxes: rounded (4px) — was rounded-lg
- Pills, badges, status chips, ordres pros avatars, decorative cosmic orbs: rounded-full preserved
- Legal _layout.html inline <style> blockquote/pre/code/draft-callout: border-radius 0 — was 4px

Updated tests/test_marketing_landing_template.py assertions:
- bento icon assertion: "grad-bg rounded " -> "grad-bg rounded-none "
- pricing recommended frame: "rounded-lg" -> "rounded" (with strict trailing-char match to avoid rounded-none false positive)

Verification: 18/18 legal tests pass, 58/58 marketing landing tests pass, 5/5 root redirect tests pass. Two pre-existing failures in test_marketing_secondary_pages (SOC 2 hedge text + gitea.innova-ai.ca URL) are unrelated to this radii pass.

templates/auth/totp_verify.html

@@ -5,14 +5,14 @@
 
 {% block content %}
 <section class="min-h-[calc(100vh-62px)] bg-brand-bg py-16 px-4" aria-labelledby="totp-verify-title">
-  <div class="max-w-md mx-auto bg-white p-8 rounded-lg border border-brand-border shadow-cta">
+  <div class="max-w-md mx-auto bg-white p-8 rounded border border-brand-border shadow-cta">
     <h1 id="totp-verify-title" class="text-3xl font-black text-brand-navy mb-2">Vérification en deux étapes</h1>
     <p class="text-sm text-brand-navy/70 mb-6">Entrez le code à 6 chiffres affiché dans votre application authenticator pour terminer la connexion.</p>
 
     {% with messages = get_flashed_messages(with_categories=true) %}
       {% if messages %}
         {% for category, message in messages %}
-          <div role="alert" class="mb-3 p-3 rounded-lg text-sm
+          <div role="alert" class="mb-3 p-3 rounded text-sm
             {% if category == 'danger' %}bg-red-50 text-red-900 border border-red-200
             {% elif category == 'warning' %}bg-amber-50 text-amber-900 border border-amber-200
             {% elif category == 'success' %}bg-green-50 text-green-900 border border-green-200
@@ -24,14 +24,14 @@
     {% endwith %}
 
     {% if error %}
-      <div role="alert" class="mb-4 p-3 rounded-lg text-sm bg-red-50 text-red-900 border border-red-200">{{ error }}</div>
+      <div role="alert" class="mb-4 p-3 rounded text-sm bg-red-50 text-red-900 border border-red-200">{{ error }}</div>
     {% endif %}
 
     {# B-2.6: Passkey path (only if user has at least one registered passkey) #}
     {% if has_passkeys %}
     <section class="mb-6" aria-labelledby="passkey-section-title">
       <h2 id="passkey-section-title" class="text-base font-semibold text-brand-navy mb-3">Connexion par Passkey</h2>
-      <button id="passkey-auth-btn" type="button" class="w-full grad-bg text-white font-semibold py-3 rounded shadow-cta hover:shadow-cta-hover transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
+      <button id="passkey-auth-btn" type="button" class="w-full grad-bg text-white font-semibold py-3 rounded-none shadow-cta hover:shadow-cta-hover transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
         Utiliser ma Passkey
       </button>
       <p id="passkey-status" class="text-xs text-brand-navy/70 mt-2" role="status" aria-live="polite"></p>
@@ -54,11 +54,11 @@
         <input type="text" id="code" name="code"
                inputmode="numeric" autocomplete="one-time-code"
                pattern="[0-9]{6}" maxlength="6"
-               class="w-full px-3 py-3 border border-brand-border rounded text-brand-navy text-center text-2xl font-mono tracking-widest focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2"
+               class="w-full px-3 py-3 border border-brand-border rounded-none text-brand-navy text-center text-2xl font-mono tracking-widest focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2"
                placeholder="000000" autofocus>
       </div>
 
-      <button type="submit" class="w-full grad-bg text-white font-semibold py-3 rounded shadow-cta hover:shadow-cta-hover transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
+      <button type="submit" class="w-full grad-bg text-white font-semibold py-3 rounded-none shadow-cta hover:shadow-cta-hover transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
         Vérifier et se connecter
       </button>
     </form>
@@ -74,11 +74,11 @@
           <label for="recovery_code" class="block text-sm font-medium text-brand-navy mb-1">Code de récupération <span class="text-red-600" aria-hidden="true">*</span></label>
           <input type="text" id="recovery_code" name="recovery_code"
                  autocomplete="off"
-                 class="w-full px-3 py-2 border border-brand-border rounded text-brand-navy font-mono uppercase focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2"
+                 class="w-full px-3 py-2 border border-brand-border rounded-none text-brand-navy font-mono uppercase focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2"
                  placeholder="XXXXX-XXXXX">
           <p class="text-xs text-brand-navy/60 mt-1">Format&nbsp;: 5 caractères + tiret + 5 caractères. Chaque code est à usage unique.</p>
         </div>
-        <button type="submit" class="w-full bg-brand-navy text-white font-semibold py-3 rounded hover:bg-brand-navy2 transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
+        <button type="submit" class="w-full bg-brand-navy text-white font-semibold py-3 rounded-none hover:bg-brand-navy2 transition focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2">
           Utiliser le code de récupération
         </button>
         <p class="text-xs text-brand-navy/60 text-center" aria-live="polite">{{ recovery_codes_remaining }} code{{ 's' if recovery_codes_remaining != 1 else '' }} de récupération restant{{ 's' if recovery_codes_remaining != 1 else '' }}.</p>