diff --git a/tools/add_weather.js b/tools/add_weather.js
index 0299f13a..744427bb 100644
--- a/tools/add_weather.js
+++ b/tools/add_weather.js
@@ -6,6 +6,7 @@ const { extractRawDate, readFrontmatter, writeFrontmatter } = require("./lib/wea
 const { resolveArticleDate } = require("./lib/weather/time");
 const { fetchWeather, hasConfiguredProvider, mergeWeather } = require("./lib/weather/providers");
 const { loadWeatherConfig } = require("./lib/weather/config");
+const { isEffectivelyPublishedDocument } = require("./lib/publication");
 
 const CONTENT_ROOT = path.resolve("content");
 
@@ -16,6 +17,10 @@ async function processFile(filePath, config, { force = false } = {}) {
         return { status: "no-frontmatter" };
     }
 
+    if (isEffectivelyPublishedDocument(frontmatter.doc) === false) {
+        return { status: "draft" };
+    }
+
     let existingWeather = null;
     if (frontmatter.doc.has("weather")) {
         existingWeather = frontmatter.doc.get("weather");
@@ -124,6 +129,10 @@ async function main() {
                     updated += 1;
                     console.log(`• Added empty weather to ${relativePath}`);
                     break;
+                case "draft":
+                    skipped += 1;
+                    console.log(`• Skipped draft article ${relativePath}`);
+                    break;
                 default:
                     skipped += 1;
             }
diff --git a/tools/lib/publication.js b/tools/lib/publication.js
new file mode 100644
index 00000000..1371342c
--- /dev/null
+++ b/tools/lib/publication.js
@@ -0,0 +1,71 @@
+/**
+ * Interprète une valeur booléenne potentiellement sérialisée.
+ * @param {unknown} value Valeur brute issue du frontmatter.
+ * @returns {boolean|null} true/false si interprétable, sinon null.
+ */
+function parseBoolean(value) {
+  if (typeof value === "boolean") {
+    return value;
+  }
+
+  if (typeof value !== "string") {
+    return null;
+  }
+
+  const normalized = value.trim().toLowerCase();
+  if (!normalized) {
+    return null;
+  }
+
+  if (normalized === "true" || normalized === "1" || normalized === "yes" || normalized === "on") {
+    return true;
+  }
+
+  if (normalized === "false" || normalized === "0" || normalized === "no" || normalized === "off") {
+    return false;
+  }
+
+  return null;
+}
+
+/**
+ * Détermine si la valeur `draft` représente un brouillon.
+ * @param {unknown} value Valeur brute de l'attribut `draft`.
+ * @returns {boolean} true si l'article est un brouillon.
+ */
+function isDraftValue(value) {
+  return parseBoolean(value) === true;
+}
+
+/**
+ * Indique si un frontmatter objet correspond à un article publié.
+ * @param {Record<string, unknown>|null|undefined} frontmatterData Données frontmatter sérialisées.
+ * @returns {boolean} true si l'article est considéré comme publié.
+ */
+function isEffectivelyPublished(frontmatterData) {
+  if (!frontmatterData || typeof frontmatterData !== "object") {
+    return true;
+  }
+
+  return isDraftValue(frontmatterData.draft) === false;
+}
+
+/**
+ * Indique si un document YAML frontmatter correspond à un article publié.
+ * @param {{ get: (key: string) => unknown }|null|undefined} doc Document YAML.
+ * @returns {boolean} true si l'article est considéré comme publié.
+ */
+function isEffectivelyPublishedDocument(doc) {
+  if (!doc || typeof doc.get !== "function") {
+    return true;
+  }
+
+  return isDraftValue(doc.get("draft")) === false;
+}
+
+module.exports = {
+  parseBoolean,
+  isDraftValue,
+  isEffectivelyPublished,
+  isEffectivelyPublishedDocument,
+};
diff --git a/tools/move_article.js b/tools/move_article.js
index e23fdfd4..eccbe5d1 100644
--- a/tools/move_article.js
+++ b/tools/move_article.js
@@ -6,6 +6,7 @@ const { Pool } = require("pg");
 const { loadEnv } = require("./lib/env");
 const { loadToolsConfig } = require("./lib/config");
 const { readFrontmatterFile } = require("./lib/frontmatter");
+const { isEffectivelyPublished } = require("./lib/publication");
 const {
   resolveBundlePath,
   ensureBundleExists,
@@ -93,6 +94,10 @@ async function main() {
  * @param {string} bundleDir Chemin du bundle après déplacement.
  */
 async function updateLemmyIfNeeded(frontmatterData, bundleDir) {
+  if (isEffectivelyPublished(frontmatterData) === false) {
+    return;
+  }
+
   const commentsUrl = extractCommentsUrl(frontmatterData);
   if (!commentsUrl) {
     return;
diff --git a/tools/sync_lemmy_comments.js b/tools/sync_lemmy_comments.js
index bb053065..451a1daf 100644
--- a/tools/sync_lemmy_comments.js
+++ b/tools/sync_lemmy_comments.js
@@ -5,14 +5,18 @@ const fs = require("node:fs");
 const path = require("node:path");
 const sharp = require("sharp");
 const { LemmyHttp } = require("lemmy-js-client");
+const { Pool } = require("pg");
 const { collectBundles } = require("./lib/content");
 const { loadToolsConfig } = require("./lib/config");
 const { parseFrontmatterDate } = require("./lib/datetime");
+const { loadEnv } = require("./lib/env");
 const { readFrontmatterFile, writeFrontmatterFile } = require("./lib/frontmatter");
+const { isEffectivelyPublished } = require("./lib/publication");
 
 const CONTENT_ROOT = path.join(__dirname, "..", "content");
 const FRONTMATTER_COMMENT_FIELD = "comments_url";
 const FRONTMATTER_COVER_FIELD = "cover";
+const DEFAULT_DATABASE_URL = "postgres:///lemmy?host=/run/postgresql&user=richard";
 const MAX_COMMUNITY_NAME_LENGTH = 20;
 const MIN_COMMUNITY_NAME_LENGTH = 3;
 const MAX_THUMBNAIL_WIDTH = 320;
@@ -35,10 +39,12 @@ main().then(
  * Point d'entrée principal : charge la configuration, collecte les articles et orchestre la synchronisation.
  */
 async function main() {
+  loadEnv();
   const toolsConfig = await loadToolsConfig(path.join(__dirname, "config", "config.json"));
   const lemmyConfig = normalizeLemmyConfig(toolsConfig.lemmy);
   const client = await createLemmyClient(lemmyConfig);
   const bundles = await collectBundles(CONTENT_ROOT);
+  await purgeDraftPosts(bundles, lemmyConfig, client);
   console.log("Vérification des communautés Lemmy pour les fils existants…");
   await ensureRestrictedCommunitiesForExistingThreads(bundles, lemmyConfig, client);
   const articles = selectArticles(bundles);
@@ -128,6 +134,274 @@ async function createLemmyClient(lemmyConfig) {
   return client;
 }
 
+/**
+ * Purge les posts Lemmy liés aux articles en brouillon.
+ * Règles appliquées :
+ * - un brouillon n'est jamais synchronisé ;
+ * - si un post existe déjà sur Lemmy, il est supprimé physiquement de la base ;
+ * - le champ comments_url est retiré du frontmatter du brouillon.
+ * @param {Array<object>} bundles Bundles Hugo collectés.
+ * @param {object} lemmyConfig Configuration Lemmy.
+ * @param {LemmyHttp} client Client Lemmy authentifié.
+ * @returns {Promise<void>} Promesse résolue une fois la purge terminée.
+ */
+async function purgeDraftPosts(bundles, lemmyConfig, client) {
+  const draftArticles = collectDraftArticles(bundles, lemmyConfig);
+  if (draftArticles.length === 0) {
+    return;
+  }
+
+  const postIds = new Set();
+  let cleanedFrontmatters = 0;
+
+  for (const article of draftArticles) {
+    const commentsUrl = extractCommentsUrl(article.frontmatter.data);
+    const postId = extractPostId(commentsUrl);
+    if (postId !== null) {
+      postIds.add(postId);
+    }
+
+    if (article.title) {
+      const matchingIds = await searchDraftPostsByTitle(
+        client,
+        article.title,
+        article.articleUrl,
+        lemmyConfig.siteUrl
+      );
+      for (const matchingId of matchingIds) {
+        postIds.add(matchingId);
+      }
+    } else {
+      console.warn(`⚠️  ${article.bundle.relativePath} : titre manquant, recherche Lemmy par titre ignorée.`);
+    }
+
+    if (clearDraftCommentsUrl(article)) {
+      cleanedFrontmatters += 1;
+    }
+  }
+
+  const targetIds = Array.from(postIds.values());
+  let deletedCount = 0;
+
+  if (targetIds.length > 0) {
+    const pool = new Pool({ connectionString: resolveDatabaseUrl() });
+    deletedCount = await deletePostsPermanently(pool, targetIds);
+    await pool.end();
+  }
+
+  if (deletedCount > 0 || cleanedFrontmatters > 0) {
+    console.log(
+      `🧹 Brouillons Lemmy : ${deletedCount} post(s) supprimé(s), ${cleanedFrontmatters} frontmatter(s) nettoyé(s).`
+    );
+  }
+}
+
+/**
+ * Construit la liste des articles en brouillon.
+ * @param {Array<object>} bundles Bundles Hugo collectés.
+ * @param {object} lemmyConfig Configuration Lemmy.
+ * @returns {Array<object>} Brouillons accompagnés de leur contexte Lemmy.
+ */
+function collectDraftArticles(bundles, lemmyConfig) {
+  const drafts = [];
+
+  for (const bundle of bundles) {
+    const frontmatter = readFrontmatterFile(bundle.indexPath);
+    if (!frontmatter) {
+      continue;
+    }
+
+    if (isEffectivelyPublished(frontmatter.data)) {
+      continue;
+    }
+
+    let title = "";
+    if (typeof frontmatter.data?.title === "string") {
+      title = frontmatter.data.title.trim();
+    }
+
+    drafts.push({
+      bundle,
+      frontmatter,
+      title,
+      articleUrl: buildArticleUrl(lemmyConfig.siteUrl, bundle.parts),
+    });
+  }
+
+  return drafts;
+}
+
+/**
+ * Recherche les posts Lemmy correspondant au titre et à l'URL d'un brouillon.
+ * @param {LemmyHttp} client Client Lemmy.
+ * @param {string} title Titre Hugo du brouillon.
+ * @param {string} articleUrl URL publique de l'article Hugo.
+ * @param {string} siteUrl URL racine du site Hugo.
+ * @returns {Promise<number[]>} Identifiants de posts correspondants.
+ */
+async function searchDraftPostsByTitle(client, title, articleUrl, siteUrl) {
+  const response = await client.search({
+    q: title,
+    type_: "Posts",
+    limit: 50,
+  });
+
+  if (!response.posts || response.posts.length === 0) {
+    return [];
+  }
+
+  const normalizedArticleUrl = normalizeUrl(articleUrl);
+  const normalizedSiteUrl = normalizeUrl(siteUrl);
+  const matches = [];
+
+  for (const postView of response.posts) {
+    const postTitle = readPostTitle(postView);
+    if (postTitle !== title) {
+      continue;
+    }
+
+    const postUrl = readPostUrl(postView);
+    if (!postUrl) {
+      continue;
+    }
+
+    const normalizedPostUrl = normalizeUrl(postUrl);
+    if (!normalizedPostUrl) {
+      continue;
+    }
+
+    if (normalizedPostUrl === normalizedArticleUrl) {
+      matches.push(postView.post.id);
+      continue;
+    }
+
+    if (normalizedSiteUrl && normalizedPostUrl.startsWith(`${normalizedSiteUrl}/`)) {
+      matches.push(postView.post.id);
+    }
+  }
+
+  return matches;
+}
+
+/**
+ * Supprime définitivement les posts Lemmy ciblés depuis la base.
+ * @param {Pool} pool Pool Postgres.
+ * @param {number[]} postIds Identifiants de posts à supprimer.
+ * @returns {Promise<number>} Nombre de posts affectés.
+ */
+async function deletePostsPermanently(pool, postIds) {
+  const query = "delete from post where id = any($1::int[])";
+  const result = await pool.query(query, [postIds]);
+  return result.rowCount;
+}
+
+/**
+ * Extrait un titre de post Lemmy nettoyé.
+ * @param {object} postView Résultat de recherche Lemmy.
+ * @returns {string} Titre nettoyé.
+ */
+function readPostTitle(postView) {
+  if (!postView || !postView.post) {
+    return "";
+  }
+
+  if (typeof postView.post.name !== "string") {
+    return "";
+  }
+
+  return postView.post.name.trim();
+}
+
+/**
+ * Extrait l'URL d'un post Lemmy nettoyée.
+ * @param {object} postView Résultat de recherche Lemmy.
+ * @returns {string} URL nettoyée.
+ */
+function readPostUrl(postView) {
+  if (!postView || !postView.post) {
+    return "";
+  }
+
+  if (typeof postView.post.url !== "string") {
+    return "";
+  }
+
+  return postView.post.url.trim();
+}
+
+/**
+ * Nettoie comments_url d'un brouillon pour empêcher toute synchronisation future.
+ * @param {object} article Brouillon collecté.
+ * @returns {boolean} true si le frontmatter a été modifié.
+ */
+function clearDraftCommentsUrl(article) {
+  const commentsUrl = extractCommentsUrl(article.frontmatter.data);
+  if (!commentsUrl) {
+    return false;
+  }
+
+  delete article.frontmatter.data[FRONTMATTER_COMMENT_FIELD];
+  writeFrontmatterFile(article.bundle.indexPath, article.frontmatter.data, article.frontmatter.body);
+  return true;
+}
+
+/**
+ * Extrait la valeur comments_url depuis un frontmatter sérialisé.
+ * @param {Record<string, unknown>|null|undefined} frontmatterData Données frontmatter.
+ * @returns {string} URL nettoyée ou chaîne vide.
+ */
+function extractCommentsUrl(frontmatterData) {
+  if (!frontmatterData || typeof frontmatterData !== "object") {
+    return "";
+  }
+
+  if (typeof frontmatterData[FRONTMATTER_COMMENT_FIELD] !== "string") {
+    return "";
+  }
+
+  return frontmatterData[FRONTMATTER_COMMENT_FIELD].trim();
+}
+
+/**
+ * Extrait l'identifiant numérique d'un comments_url Lemmy.
+ * @param {string} url URL issue du frontmatter.
+ * @returns {number|null} Identifiant ou null si non reconnu.
+ */
+function extractPostId(url) {
+  if (typeof url !== "string") {
+    return null;
+  }
+
+  const trimmed = url.trim();
+  if (!trimmed) {
+    return null;
+  }
+
+  const normalized = trimmed.replace(/\/+$/, "");
+  const match = normalized.match(/\/(?:post|c\/[^/]+\/post)\/(\d+)(?:$|\?)/i);
+  if (!match) {
+    return null;
+  }
+
+  return Number.parseInt(match[1], 10);
+}
+
+/**
+ * Détermine l'URL de connexion Postgres.
+ * @returns {string} Chaîne de connexion.
+ */
+function resolveDatabaseUrl() {
+  if (typeof process.env.LEMMY_DATABASE_URL === "string" && process.env.LEMMY_DATABASE_URL.trim()) {
+    return process.env.LEMMY_DATABASE_URL.trim();
+  }
+
+  if (typeof process.env.DATABASE_URL === "string" && process.env.DATABASE_URL.trim()) {
+    return process.env.DATABASE_URL.trim();
+  }
+
+  return DEFAULT_DATABASE_URL;
+}
+
 /**
  * Prépare la liste des articles à synchroniser : frontmatter présent, date valide, comments_url absent.
  * Le tri est effectué par date croissante, puis par chemin en cas d'égalité.
@@ -144,10 +418,11 @@ function selectArticles(bundles) {
       continue;
     }
 
-    const existingComments =
-      typeof frontmatter.data?.[FRONTMATTER_COMMENT_FIELD] === "string"
-        ? frontmatter.data[FRONTMATTER_COMMENT_FIELD].trim()
-        : "";
+    if (isEffectivelyPublished(frontmatter.data) === false) {
+      continue;
+    }
+
+    const existingComments = extractCommentsUrl(frontmatter.data);
     if (existingComments) {
       continue;
     }
@@ -205,10 +480,11 @@ async function ensureRestrictedCommunitiesForExistingThreads(bundles, lemmyConfi
       continue;
     }
 
-    const existingComments =
-      typeof frontmatter.data?.[FRONTMATTER_COMMENT_FIELD] === "string"
-        ? frontmatter.data[FRONTMATTER_COMMENT_FIELD].trim()
-        : "";
+    if (isEffectivelyPublished(frontmatter.data) === false) {
+      continue;
+    }
+
+    const existingComments = extractCommentsUrl(frontmatter.data);
     if (!existingComments) {
       continue;
     }
diff --git a/tools/tests/publication.test.js b/tools/tests/publication.test.js
new file mode 100644
index 00000000..827fdf06
--- /dev/null
+++ b/tools/tests/publication.test.js
@@ -0,0 +1,63 @@
+const test = require("node:test");
+const assert = require("node:assert/strict");
+const {
+  parseBoolean,
+  isDraftValue,
+  isEffectivelyPublished,
+  isEffectivelyPublishedDocument,
+} = require("../lib/publication");
+
+test("parseBoolean converts common boolean representations", () => {
+  assert.equal(parseBoolean(true), true);
+  assert.equal(parseBoolean(false), false);
+  assert.equal(parseBoolean("true"), true);
+  assert.equal(parseBoolean("TRUE"), true);
+  assert.equal(parseBoolean("1"), true);
+  assert.equal(parseBoolean("on"), true);
+  assert.equal(parseBoolean("false"), false);
+  assert.equal(parseBoolean("0"), false);
+  assert.equal(parseBoolean("off"), false);
+  assert.equal(parseBoolean(""), null);
+  assert.equal(parseBoolean("unknown"), null);
+  assert.equal(parseBoolean(1), null);
+});
+
+test("isDraftValue returns true only for explicit draft values", () => {
+  assert.equal(isDraftValue(true), true);
+  assert.equal(isDraftValue("true"), true);
+  assert.equal(isDraftValue("yes"), true);
+  assert.equal(isDraftValue(false), false);
+  assert.equal(isDraftValue("false"), false);
+  assert.equal(isDraftValue(undefined), false);
+});
+
+test("isEffectivelyPublished excludes draft frontmatter", () => {
+  assert.equal(isEffectivelyPublished({ draft: true }), false);
+  assert.equal(isEffectivelyPublished({ draft: "true" }), false);
+  assert.equal(isEffectivelyPublished({ draft: false }), true);
+  assert.equal(isEffectivelyPublished({ title: "Article" }), true);
+  assert.equal(isEffectivelyPublished(null), true);
+});
+
+test("isEffectivelyPublishedDocument supports YAML-like get()", () => {
+  const docDraft = {
+    get(key) {
+      if (key === "draft") {
+        return true;
+      }
+      return null;
+    },
+  };
+  const docPublished = {
+    get(key) {
+      if (key === "draft") {
+        return false;
+      }
+      return null;
+    },
+  };
+
+  assert.equal(isEffectivelyPublishedDocument(docDraft), false);
+  assert.equal(isEffectivelyPublishedDocument(docPublished), true);
+  assert.equal(isEffectivelyPublishedDocument(null), true);
+});
diff --git a/tools/update_lemmy_post_dates.js b/tools/update_lemmy_post_dates.js
index 7876296e..4f569647 100644
--- a/tools/update_lemmy_post_dates.js
+++ b/tools/update_lemmy_post_dates.js
@@ -24,6 +24,7 @@ const { parseFrontmatterDate } = require("./lib/datetime");
 const { readFrontmatterFile } = require("./lib/frontmatter");
 const { loadEnv } = require("./lib/env");
 const { loadToolsConfig } = require("./lib/config");
+const { isEffectivelyPublished } = require("./lib/publication");
 
 const CONTENT_ROOT = path.join(__dirname, "..", "content");
 const DEFAULT_DATABASE_URL = "postgres:///lemmy?host=/run/postgresql&user=richard";
@@ -207,6 +208,9 @@ function collectArticlesWithPostId(bundles) {
     if (!frontmatter) {
       continue;
     }
+    if (isEffectivelyPublished(frontmatter.data) === false) {
+      continue;
+    }
     const publication = parseFrontmatterDate(frontmatter.data?.date);
     if (!publication) {
       continue;