fix(external-plugins): gate reviews on ready intake

Use the same intake readiness predicate across approval, AI review, and re-review paths. Keep pending submissions visible but do not count or queue them for review until validation completes; clarify board visibility in the README.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 821f4796-505e-4fb8-96cf-0b5bbf80a636

.github/extensions/external-plugin-review-board/README.md

@@ -22,7 +22,7 @@ Open it by asking Copilot to "open the plugin review board" (canvas id `external
   first-party fast-track are unavailable until intake is ready.
 - **First-party fast-track**: cards labelled `first party` (repository owned by a Microsoft/GitHub
   organization) skip AI review and go straight to *Accept* with a suggested `/approve`. Only submissions
-  that passed automated intake reach the board, so hard validation failures are still held back by intake.
+  that passed automated intake can use fast-track or be approved; pending submissions remain visible on the board.
   Fast-track never overrides an existing review or a bucket you chose; drag a card to *Unreviewed* to opt it
   out and have it reviewed normally. Cards show *First party* / *Third party* pills from the intake labels.
 - **Details panel** shows the AI review, the rendered issue body, and all comments.

.github/extensions/external-plugin-review-board/extension.mjs

@@ -97,6 +97,9 @@ async function startRereview({ number, guidance, instanceId, send }) {
     const item = store.getItem(Number(number));
     if (item.decision) throw new Error(`#${item.number} was already actioned (${item.decision.kind}).`);
     if (item.reviewStatus === "queued") throw new Error(`#${item.number} is already queued for review.`);
+    if (!isReadyForApproval(item.labels ?? [])) {
+        throw new Error(`#${item.number} is pending intake or is no longer ready-for-review.`);
+    }
     const text = String(guidance ?? "").trim().slice(0, MAX_GUIDANCE_LENGTH);
     const snapshots = await store.markQueued([item.number], { rereviewGuidance: text || null });
     const prompt = buildRereviewPrompt({

.github/extensions/external-plugin-review-board/lib/state.mjs

@@ -140,7 +140,10 @@ export class BoardStore {
             repo: this.state.repo,
             lastRefreshedAt: this.state.lastRefreshedAt,
             columns: COLUMNS,
-            items,
+            items: items.map((item) => ({
+                ...item,
+                reviewEligible: isReadyForApproval(item.labels ?? []),
+            })),
             history: this.state.history.slice(0, 50),
         };
     }
@@ -188,7 +191,12 @@ export class BoardStore {
     }
 
     pendingReview(numbers) {
-        const all = Object.values(this.state.items).filter((item) => !item.decision && item.reviewStatus !== "queued");
+        const all = Object.values(this.state.items).filter(
+            (item) =>
+                isReadyForApproval(item.labels ?? []) &&
+                !item.decision &&
+                item.reviewStatus !== "queued",
+        );
         if (numbers?.length) {
             const wanted = new Set(numbers.map(Number));
             return all.filter((item) => wanted.has(item.number));

.github/extensions/external-plugin-review-board/public/app.js

@@ -151,7 +151,13 @@ function findItem(number) {
 
 function pendingReviewCount() {
     return board
-        ? board.items.filter((item) => !item.decision && item.reviewStatus !== "reviewed" && item.reviewStatus !== "queued").length
+        ? board.items.filter(
+              (item) =>
+                  item.reviewEligible &&
+                  !item.decision &&
+                  item.reviewStatus !== "reviewed" &&
+                  item.reviewStatus !== "queued",
+          ).length
         : 0;
 }
 
@@ -314,7 +320,7 @@ function renderDrawer() {
         .map((column) => h("option", { value: column.id, selected: column.id === item.column }, column.title));
     ui.drawerMove.replaceChildren(...options);
     ui.drawerMove.disabled = Boolean(item.decision);
-    ui.drawerRereview.disabled = Boolean(item.decision) || item.reviewStatus === "queued";
+    ui.drawerRereview.disabled = !item.reviewEligible || Boolean(item.decision) || item.reviewStatus === "queued";
     if (ui.drawerRereview.disabled) hideRereview();
 
     for (const tab of ui.tabs) {