fix(actions): tolerate empty label payload in proposer gate

Reviewed-on: #258

.gitea/workflows/proposer-apply-pr.yml

@@ -122,21 +122,25 @@ jobs:
           echo "Context:"
           sed -n '1,200p' /tmp/proposer.env
 
-      - name: Early gate
+      - name: Early gate (tolerant on empty issue label payload)
         run: |
           set -euo pipefail
           source /tmp/proposer.env
 
+          echo "event=$EVENT_NAME label=${LABEL_NAME:-<empty>}"
+
           if [[ "$EVENT_NAME" == "issues" ]]; then
-            if [[ "$LABEL_NAME" != "state/approved" ]]; then
-              echo "issues/labeled but label=$LABEL_NAME -> skip"
+            # Gitea peut fournir un payload "issues/labeled" sans label exploitable.
+            # On ne skip QUE si le label est explicitement présent ET différent de state/approved.
+            if [[ -n "${LABEL_NAME:-}" && "$LABEL_NAME" != "state/approved" ]]; then
+              echo "issues/labeled with explicit non-approved label=$LABEL_NAME -> skip"
               echo 'SKIP=1' >> /tmp/proposer.env
-              echo 'SKIP_REASON="label_not_state_approved"' >> /tmp/proposer.env
+              echo 'SKIP_REASON="label_not_state_approved_event"' >> /tmp/proposer.env
               exit 0
             fi
           fi
 
-          echo "Proceed"
+          echo "Proceed to API-based selection/gating"
 
       - name: Checkout default branch
         run: |
@@ -284,6 +288,11 @@ jobs:
           [[ "${SKIP:-0}" == "1" ]] || exit 0
           [[ "${EVENT_NAME:-}" != "push" ]] || exit 0
 
+          if [[ "${SKIP_REASON:-}" == "label_not_state_approved_event" || "${SKIP_REASON:-}" == "label_not_state_approved" ]]; then
+            echo "Skip reason=${SKIP_REASON} -> no comment"
+            exit 0
+          fi
+
           test -n "${FORGE_TOKEN:-}" || exit 0
 
           ISSUE_TO_COMMENT="${ISSUE_NUMBER:-0}"

scripts/apply-ticket.mjs

@@ -9,8 +9,9 @@ import { spawnSync } from "node:child_process";
  *
  * Conçu pour:
  * - prendre un ticket [Correction]/[Fact-check] (issue) avec Chemin + Ancre + Proposition
- * - retrouver le bon paragraphe dans le .mdx
+ * - retrouver le bon paragraphe dans le .mdx/.md
  * - remplacer proprement
+ * - ne JAMAIS toucher au frontmatter
  * - optionnel: écrire un alias d’ancre old->new (build-time) dans src/anchors/anchor-aliases.json
  * - optionnel: committer automatiquement
  * - optionnel: fermer le ticket (après commit)
@@ -137,28 +138,17 @@ function scoreText(candidate, targetText) {
   let hit = 0;
   for (const w of tgtSet) if (blkSet.has(w)) hit++;
 
-  // Bonus si un long préfixe ressemble
   const tgtNorm = normalizeText(stripMd(targetText));
   const blkNorm = normalizeText(stripMd(candidate));
   const prefix = tgtNorm.slice(0, Math.min(180, tgtNorm.length));
   const prefixBonus = prefix && blkNorm.includes(prefix) ? 1000 : 0;
 
-  // Ratio bonus (0..100)
   const ratio = hit / Math.max(1, tgtSet.size);
   const ratioBonus = Math.round(ratio * 100);
 
   return prefixBonus + hit + ratioBonus;
 }
 
-function bestBlockMatchIndex(blocks, targetText) {
-  let best = { i: -1, score: -1 };
-  for (let i = 0; i < blocks.length; i++) {
-    const sc = scoreText(blocks[i], targetText);
-    if (sc > best.score) best = { i, score: sc };
-  }
-  return best;
-}
-
 function rankedBlockMatches(blocks, targetText, limit = 5) {
   return blocks
     .map((b, i) => ({
@@ -170,11 +160,6 @@ function rankedBlockMatches(blocks, targetText, limit = 5) {
     .slice(0, limit);
 }
 
-function splitParagraphBlocks(mdxText) {
-  const raw = String(mdxText ?? "").replace(/\r\n/g, "\n");
-  return raw.split(/\n{2,}/);
-}
-
 function isLikelyExcerpt(s) {
   const t = String(s || "").trim();
   if (!t) return true;
@@ -184,6 +169,89 @@ function isLikelyExcerpt(s) {
   return false;
 }
 
+/* --------------------------- frontmatter / structure ------------------------ */
+
+function normalizeNewlines(s) {
+  return String(s ?? "").replace(/^\uFEFF/, "").replace(/\r\n/g, "\n");
+}
+
+function splitMdxFrontmatter(src) {
+  const text = normalizeNewlines(src);
+  const m = text.match(/^---\n[\s\S]*?\n---\n?/);
+
+  if (!m) {
+    return {
+      hasFrontmatter: false,
+      frontmatter: "",
+      body: text,
+    };
+  }
+
+  const frontmatter = m[0];
+  const body = text.slice(frontmatter.length);
+
+  return {
+    hasFrontmatter: true,
+    frontmatter,
+    body,
+  };
+}
+
+function joinMdxFrontmatter(frontmatter, body) {
+  if (!frontmatter) return String(body ?? "");
+  return String(frontmatter) + String(body ?? "");
+}
+
+function assertFrontmatterIntegrity({ hadFrontmatter, originalFrontmatter, finalText, filePath }) {
+  if (!hadFrontmatter) return;
+
+  const text = normalizeNewlines(finalText);
+
+  if (!text.startsWith("---\n")) {
+    throw new Error(`Frontmatter perdu pendant la mise à jour de ${filePath}`);
+  }
+
+  if (!text.startsWith(originalFrontmatter)) {
+    throw new Error(`Frontmatter altéré pendant la mise à jour de ${filePath}`);
+  }
+}
+
+function splitParagraphBlocksPreserve(bodyText) {
+  const text = normalizeNewlines(bodyText);
+
+  if (!text) {
+    return { blocks: [], separators: [] };
+  }
+
+  const blocks = [];
+  const separators = [];
+
+  const re = /(\n{2,})/g;
+  let last = 0;
+  let m;
+
+  while ((m = re.exec(text))) {
+    blocks.push(text.slice(last, m.index));
+    separators.push(m[1]);
+    last = m.index + m[1].length;
+  }
+
+  blocks.push(text.slice(last));
+
+  return { blocks, separators };
+}
+
+function joinParagraphBlocksPreserve(blocks, separators) {
+  if (!Array.isArray(blocks) || blocks.length === 0) return "";
+
+  let out = "";
+  for (let i = 0; i < blocks.length; i++) {
+    out += blocks[i];
+    if (i < separators.length) out += separators[i];
+  }
+  return out;
+}
+
 /* ------------------------------ utils système ------------------------------ */
 
 function run(cmd, args, opts = {}) {
@@ -263,7 +331,9 @@ function pickSection(body, markers) {
     .map((m) => ({ m, i: text.toLowerCase().indexOf(m.toLowerCase()) }))
     .filter((x) => x.i >= 0)
     .sort((a, b) => a.i - b.i)[0];
+
   if (!idx) return "";
+
   const start = idx.i + idx.m.length;
   const tail = text.slice(start);
 
@@ -278,11 +348,13 @@ function pickSection(body, markers) {
     "\n## Proposition",
     "\n## Problème",
   ];
+
   let end = tail.length;
   for (const s of stops) {
     const j = tail.toLowerCase().indexOf(s.toLowerCase());
     if (j >= 0 && j < end) end = j;
   }
+
   return tail.slice(0, end).trim();
 }
 
@@ -310,8 +382,6 @@ function extractAnchorIdAnywhere(text) {
 
 function extractCheminFromAnyUrl(text) {
   const s = String(text || "");
-  // Exemple: http://localhost:4321/archicratie/prologue/#p-3-xxxx
-  // ou: /archicratie/prologue/#p-3-xxxx
   const m = s.match(/(\/[a-z0-9\-]+\/[a-z0-9\-\/]+\/)#p-\d+-[0-9a-f]{8}/i);
   return m ? m[1] : "";
 }
@@ -412,7 +482,7 @@ async function fetchIssue({ forgeApiBase, owner, repo, token, issueNum }) {
     headers: {
       Authorization: `token ${token}`,
       Accept: "application/json",
-      "User-Agent": "archicratie-apply-ticket/2.0",
+      "User-Agent": "archicratie-apply-ticket/2.1",
     },
   });
   if (!res.ok) {
@@ -428,7 +498,7 @@ async function closeIssue({ forgeApiBase, owner, repo, token, issueNum, comment
     Authorization: `token ${token}`,
     Accept: "application/json",
     "Content-Type": "application/json",
-    "User-Agent": "archicratie-apply-ticket/2.0",
+    "User-Agent": "archicratie-apply-ticket/2.1",
   };
 
   if (comment) {
@@ -437,7 +507,11 @@ async function closeIssue({ forgeApiBase, owner, repo, token, issueNum, comment
   }
 
   const url = `${base}/api/v1/repos/${owner}/${repo}/issues/${issueNum}`;
-  const res = await fetch(url, { method: "PATCH", headers, body: JSON.stringify({ state: "closed" }) });
+  const res = await fetch(url, {
+    method: "PATCH",
+    headers,
+    body: JSON.stringify({ state: "closed" }),
+  });
 
   if (!res.ok) {
     const t = await res.text().catch(() => "");
@@ -541,10 +615,9 @@ async function main() {
   console.log(`🔎 Fetch ticket #${issueNum} from ${owner}/${repo} …`);
   const issue = await fetchIssue({ forgeApiBase, owner, repo, token, issueNum });
 
-  // Guard PR (Pull Request = "Demande d'ajout" = pas un ticket éditorial)
   if (issue?.pull_request) {
     console.error(`❌ #${issueNum} est une Pull Request (demande d’ajout), pas un ticket éditorial.`);
-    console.error(`➡️ Ouvre un ticket [Correction]/[Fact-check] depuis le site (Proposer), puis relance apply-ticket sur ce numéro.`);
+    console.error("➡️ Ouvre un ticket [Correction]/[Fact-check] depuis le site (Proposer), puis relance apply-ticket sur ce numéro.");
     process.exit(2);
   }
 
@@ -565,7 +638,6 @@ async function main() {
   ancre = (ancre || "").trim();
   if (ancre.startsWith("#")) ancre = ancre.slice(1);
 
-  // fallback si ticket mal formé
   if (!ancre) ancre = extractAnchorIdAnywhere(title) || extractAnchorIdAnywhere(body);
 
   chemin = normalizeChemin(chemin);
@@ -604,7 +676,6 @@ async function main() {
   const distHtmlPath = path.join(DIST_ROOT, chemin.replace(/^\/+|\/+$/g, ""), "index.html");
   await ensureBuildIfNeeded(distHtmlPath);
 
-  // Texte cible: préférence au texte complet (ticket), sinon dist si extrait probable
   let targetText = texteActuel;
   let distText = "";
 
@@ -621,18 +692,24 @@ async function main() {
     throw new Error("Impossible de reconstruire le texte du paragraphe (ni texte actuel, ni dist html).");
   }
 
-  const original = await fs.readFile(contentFile, "utf-8");
-  const blocks = splitParagraphBlocks(original);
+  const originalRaw = await fs.readFile(contentFile, "utf-8");
+  const { hasFrontmatter, frontmatter, body: originalBody } = splitMdxFrontmatter(originalRaw);
+
+  const split = splitParagraphBlocksPreserve(originalBody);
+  const blocks = split.blocks;
+  const separators = split.separators;
+
+  if (!blocks.length) {
+    throw new Error(`Aucun bloc éditorial exploitable dans ${path.relative(CWD, contentFile)}`);
+  }
 
   const ranked = rankedBlockMatches(blocks, targetText, 5);
   const best = ranked[0] || { i: -1, score: -1, excerpt: "" };
   const runnerUp = ranked[1] || null;
 
-  // seuil absolu
   if (best.i < 0 || best.score < 40) {
     console.error("❌ Match trop faible: je refuse de remplacer automatiquement.");
     console.error(`➡️  Score=${best.score}. Recommandation: ticket avec 'Texte actuel (copie exacte du paragraphe)'.`);
-
     console.error("Top candidates:");
     for (const r of ranked) {
       console.error(`  #${r.i + 1} score=${r.score}  ${r.excerpt}${r.excerpt.length >= 140 ? "…" : ""}`);
@@ -640,7 +717,6 @@ async function main() {
     process.exit(2);
   }
 
-  // seuil relatif : si le 2e est trop proche du 1er, on refuse aussi
   if (runnerUp) {
     const ambiguityGap = best.score - runnerUp.score;
     if (ambiguityGap < 15) {
@@ -659,7 +735,16 @@ async function main() {
 
   const nextBlocks = blocks.slice();
   nextBlocks[best.i] = afterBlock;
-  const updated = nextBlocks.join("\n\n");
+
+  const updatedBody = joinParagraphBlocksPreserve(nextBlocks, separators);
+  const updatedRaw = joinMdxFrontmatter(frontmatter, updatedBody);
+
+  assertFrontmatterIntegrity({
+    hadFrontmatter: hasFrontmatter,
+    originalFrontmatter: frontmatter,
+    finalText: updatedRaw,
+    filePath: path.relative(CWD, contentFile),
+  });
 
   console.log(`🧩 Matched block #${best.i + 1}/${blocks.length} score=${best.score}`);
 
@@ -673,16 +758,15 @@ async function main() {
     return;
   }
 
-  // backup uniquement si on écrit
   const relContentFile = path.relative(CWD, contentFile);
   const bakPath = path.join(BACKUP_ROOT, `${relContentFile}.bak.issue-${issueNum}`);
   await fs.mkdir(path.dirname(bakPath), { recursive: true });
 
   if (!(await fileExists(bakPath))) {
-    await fs.writeFile(bakPath, original, "utf-8");
+    await fs.writeFile(bakPath, originalRaw, "utf-8");
   }
 
-  await fs.writeFile(contentFile, updated, "utf-8");
+  await fs.writeFile(contentFile, updatedRaw, "utf-8");
   console.log("✅ Applied.");
 
   let aliasChanged = false;
@@ -703,13 +787,11 @@ async function main() {
 
     if (aliasChanged) {
       console.log(`✅ Alias ajouté: ${chemin} ${ancre} -> ${newId}`);
-      // MàJ dist sans rebuild complet (inject seulement)
       run("node", ["scripts/inject-anchor-aliases.mjs"], { cwd: CWD });
     } else {
       console.log(`ℹ️ Alias déjà présent ou inutile (${ancre} -> ${newId}).`);
     }
 
-    // garde-fous rapides
     run("node", ["scripts/check-anchor-aliases.mjs"], { cwd: CWD });
     run("node", ["scripts/verify-anchor-aliases-in-dist.mjs"], { cwd: CWD });
     run("npm", ["run", "test:anchors"], { cwd: CWD });
@@ -741,7 +823,6 @@ async function main() {
     return;
   }
 
-  // mode manuel
   console.log("Next (manuel) :");
   console.log(`  git diff -- ${path.relative(CWD, contentFile)}`);
   console.log(
@@ -758,4 +839,4 @@ async function main() {
 main().catch((e) => {
   console.error("💥", e?.message || e);
   process.exit(1);
-});
+});