fix(test): mock returns memory-add envelope so seed doesn't classify as declined

The `re-recording an unchanged binding does not re-seed` test broke after
harness-bot round hardened isPostBindSeeded to count `declined` as
failure (commit 8b19309). The test's mock returned the workspace-list
shape `{datamates:[...]}` for every URL, including the memory POST — the
mirror sees no id in the response and correctly classifies the block as
declined, so the seed stays unfinished and the second `recordApproved
Binding` retries it (5 fetches instead of 3).

Route the mock by URL: memory POST returns `{result:{results:[{id}]}}`,
memory list returns `[]`, everything else keeps the workspace-list
shape. The seed now genuinely completes on first call; the second warm
correctly short-circuits.

All 22 workspace-cache tests green locally.

Author: sahrizvi

packages/opencode/test/altimate/plugin/workspace.test.ts

@@ -226,8 +226,30 @@ describe("workspace binding cache", () => {
 
     let calls = 0
     const originalFetch = globalThis.fetch
+    // Return URL-shaped responses. The mem-POST endpoint must return the
+    // ``{result:{results:[{id}]}}`` envelope the mirror code expects — a
+    // response without an id classifies as ``declined``, which by design
+    // leaves the seed unfinished and forces a retry on the next warm.
+    // (harness-bot #1116 comment 3840503346 hardened that gate.)
+    let memPostSerial = 0
     globalThis.fetch = (async (_input?: unknown, _init?: unknown) => {
       calls++
+      const url = String(_input)
+      if (url.includes("/datamates/memory/") && !url.includes("/list")) {
+        memPostSerial += 1
+        return new Response(
+          JSON.stringify({
+            result: { results: [{ id: `mock-mem-${memPostSerial}`, event: "ADD" }] },
+          }),
+          { status: 200, headers: { "Content-Type": "application/json" } },
+        )
+      }
+      if (url.includes("/datamates/memory/list")) {
+        return new Response(JSON.stringify([]), {
+          status: 200,
+          headers: { "Content-Type": "application/json" },
+        })
+      }
       return new Response(JSON.stringify({ datamates: [{ id: 9, name: "Warm", memory_enabled: true }] }), {
         status: 200,
         headers: { "Content-Type": "application/json" },