fix: un dépôt est délivré une fois et retiré, comme en amont

packages/polyfill/test/cross-user-access.test.ts

@@ -103,6 +103,19 @@ function makeFakeNg() {
       }
       return undefined;
     }
+    // Retiring a DEPOSIT: every triple of one subject, whatever predicates it carries
+    // (`emulated-verifier/inbox-consume.removeDeposit`). Modelled rather than ignored — a
+    // fake that let this delete fall through would leave every deposit in place, and a
+    // suite asserting convergence would pass on a queue that never shrinks.
+    const delDeposit = query.match(/^\s*DELETE\s+WHERE\s*\{\s*<([^>]+)>\s+\?\w+\s+\?\w+\s*\}/);
+    if (delDeposit) {
+      const subject = delDeposit[1]!;
+      for (let i = quads.length - 1; i >= 0; i--) {
+        const q = quads[i]!;
+        if (q.s === subject) quads.splice(i, 1);
+      }
+      return undefined;
+    }
     // `INSERT DATA { GRAPH <g> { … } }` — the shape the store-ROOT pointer write uses.
     // Without this arm the first `<…>` in the body is the GRAPH NAME, so the pointer was
     // stored with the graph as its subject and its predicate as its object. The pointer
@@ -163,6 +176,8 @@ function makeFakeNg() {
       for (const q of quads) {
         if (q.g !== anchor) continue;
         const rec = bySubject.get(q.s) ?? {};
+        // The deposit's own subject — the key a drain names to retire it.
+        rec.d = q.s;
         if (q.p === `${INBOX}:payload`) rec.payload = q.o;
         if (q.p === `${INBOX}:ts`) rec.ts = q.o;
         if (q.p === `${INBOX}:from`) rec.from = q.o;
@@ -173,7 +188,7 @@ function makeFakeNg() {
           bindings: [...bySubject.values()]
             .filter((r) => r.payload !== undefined && r.ts !== undefined)
             .map((r) => {
-              const row: Record<string, { value: string }> = { payload: { value: r.payload! }, ts: { value: r.ts! } };
+              const row: Record<string, { value: string }> = { d: { value: r.d! }, payload: { value: r.payload! }, ts: { value: r.ts! } };
               if (r.from !== undefined) row.from = { value: r.from };
               return row;
             }),