diff --git a/.github/workflows/deploy-ovh-ftp.yml b/.github/workflows/deploy-ovh-ftp.yml
index 05b7ead..4096016 100644
--- a/.github/workflows/deploy-ovh-ftp.yml
+++ b/.github/workflows/deploy-ovh-ftp.yml
@@ -59,3 +59,6 @@ jobs:
         env:
           DEPLOY_TARGET_SKIP_BUILD: "0"
         run: bash scripts/deploy-ovh-ftp-target.sh "${{ inputs.target }}"
+
+      - name: Verify public target
+        run: node scripts/verify-public-target.mjs "${{ inputs.target }}"
diff --git a/docs/SPRINT-PLAYBOOK-2026-03-02.md b/docs/SPRINT-PLAYBOOK-2026-03-02.md
index 9c57592..b2133e9 100644
--- a/docs/SPRINT-PLAYBOOK-2026-03-02.md
+++ b/docs/SPRINT-PLAYBOOK-2026-03-02.md
@@ -42,6 +42,7 @@ PUBLIC_SITE_URL=https://www.lelectronrare.fr/preview/ npm run build:external
 - workflow GitHub Actions: `deploy-ovh-ftp.yml`
 - target: `preview`
 - remote attendu: `/www/preview`
+- verification publique automatique post-deploy via `scripts/verify-public-target.mjs`
 
 ### B3 - Verification preview
 ```bash
@@ -61,6 +62,7 @@ curl -fsSI https://www.lelectronrare.fr/preview/mentions-legales/
 - workflow GitHub Actions: `deploy-ovh-ftp.yml`
 - target: `production`
 - remote attendu: `/www`
+- verification publique automatique post-deploy via `scripts/verify-public-target.mjs`
 
 ### C3 - Verification production
 ```bash
diff --git a/docs/project-master-todos.md b/docs/project-master-todos.md
index 683db40..a2cf4cf 100644
--- a/docs/project-master-todos.md
+++ b/docs/project-master-todos.md
@@ -25,6 +25,7 @@ Source of truth: this file for execution priorities, plus the current code in `s
 - [x] Reliquats CSS `.site-contrast-toggle` supprimes du source actif.
 - [x] Build preview local `PUBLIC_SITE_URL=/preview/` repasse propre.
 - [x] Validation tracking recalee sur le contrat Astro actif.
+- [x] Workflow OVH enrichi avec verification HTTP publique post-deploiement.
 - [ ] White-contrast pass verifiee visuellement sur preview.
 - [ ] White-contrast pass verifiee visuellement sur production.
 
diff --git a/scripts/verify-public-target.mjs b/scripts/verify-public-target.mjs
new file mode 100644
index 0000000..439d6c6
--- /dev/null
+++ b/scripts/verify-public-target.mjs
@@ -0,0 +1,72 @@
+const target = process.argv[2] || 'preview';
+
+function normalizeUrl(value) {
+  return value.endsWith('/') ? value : `${value}/`;
+}
+
+function resolveBaseUrl() {
+  if (target === 'preview') {
+    return process.env.PUBLIC_SITE_URL_PREVIEW;
+  }
+
+  if (target === 'production' || target === 'prod') {
+    return process.env.PUBLIC_SITE_URL_PROD || process.env.PUBLIC_SITE_URL;
+  }
+
+  throw new Error(`Unknown target "${target}". Use "preview" or "production".`);
+}
+
+const baseUrl = resolveBaseUrl();
+
+if (!baseUrl) {
+  throw new Error(`Missing public base URL for target "${target}".`);
+}
+
+const rootUrl = normalizeUrl(baseUrl);
+const formationUrl = new URL('formation/', rootUrl).href;
+const legalUrl = new URL('mentions-legales/', rootUrl).href;
+
+const checks = [
+  {
+    url: rootUrl,
+    includes: ['data-theme="high-contrast"', 'Électronique embarquée du signal au produit'],
+    excludes: ['Mode contraste']
+  },
+  {
+    url: formationUrl,
+    includes: ['Formation']
+  },
+  {
+    url: legalUrl,
+    includes: ['Mentions légales']
+  }
+];
+
+for (const check of checks) {
+  const response = await fetch(check.url, {
+    headers: {
+      'user-agent': 'electron-rare-gh-verify/1.0'
+    },
+    redirect: 'follow'
+  });
+
+  if (!response.ok) {
+    throw new Error(`HTTP ${response.status} for ${check.url}`);
+  }
+
+  const text = await response.text();
+
+  for (const needle of check.includes || []) {
+    if (!text.includes(needle)) {
+      throw new Error(`Missing "${needle}" in ${check.url}`);
+    }
+  }
+
+  for (const needle of check.excludes || []) {
+    if (text.includes(needle)) {
+      throw new Error(`Unexpected "${needle}" in ${check.url}`);
+    }
+  }
+}
+
+console.log(`Public verification passed for ${target}: ${rootUrl}`);