feat: adopt shared wasm wire schemas; resurrect collab e2e bundle (ysync 0008 A)

- standalone wasm/collab/types.ts: the CollabItem/CollabDelta data shapes now
  come from MIT @pcbjam/shared (collab-wire zod schemas) via re-export; the
  RUNTIME adapter interface (CollabBridge) stays here. emptyDelta/isEmptyDelta
  alias the shared helpers — reconciler untouched.
- tests/collab/browser-entry.ts: fix the import path stale since the repo
  restructure (web/apps/frontend → web/standalone) — the collab bundle had been
  silently unbuildable; its opts type now tracks startCollab's real signature.
- tests/kicad/*-collab.spec.ts: update KicadCollab.start calls from the
  pre-ysync-0004 { channel, settleMs } API to { provider: { kind:
  "broadcastchannel", settleMs }, room } — the drift the broken bundle hid.

Verified: pl_editor 2/2, eeschema 2 passed, pcbnew 7 passed (skips pre-existing);
shared 47 unit tests; both typechecks clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/collab/browser-entry.ts

@@ -16,11 +16,12 @@ import {
 function start(
   mod: CollabModule,
   win: CollabWindow,
-  opts: { channel: string; settleMs?: number },
+  // Same opts as startCollab itself (ysync 0004: { provider, room }).
+        opts: Parameters<typeof startCollab>[2],
 ): ReturnType<typeof startCollab> {
   return startCollab(mod, win, {
     provider: { kind: "broadcastchannel", settleMs: opts.settleMs },
-    room: opts.channel,
+    room: opts.room,
   });
 }
 

tests/kicad/eeschema-collab.spec.ts

@@ -240,7 +240,7 @@ test.describe("eeschema collab bridge — two tabs (BroadcastChannel)", () => {
           KicadCollab: { start: (m: unknown, win: unknown, o: unknown) => Promise<unknown> };
           Module: unknown;
         };
-        await w.KicadCollab.start(w.Module, window, { channel: ch, settleMs: 500 });
+        await w.KicadCollab.start(w.Module, window, { provider: { kind: "broadcastchannel", settleMs: 500 }, room: ch });
       }, channel);
     await startCollab(tabA);
     await startCollab(tabB);

tests/kicad/pcbnew-collab.spec.ts

@@ -414,7 +414,7 @@ test.describe("pcbnew collab bridge — two tabs (BroadcastChannel)", () => {
           KicadCollab: { start: (m: unknown, win: unknown, o: unknown) => Promise<unknown> };
           Module: unknown;
         };
-        await w.KicadCollab.start(w.Module, window, { channel: ch, settleMs: 500 });
+        await w.KicadCollab.start(w.Module, window, { provider: { kind: "broadcastchannel", settleMs: 500 }, room: ch });
       }, channel);
     await startCollab(tabA);
     await startCollab(tabB);

tests/kicad/pl_editor-collab.spec.ts

@@ -195,7 +195,7 @@ test.describe("pl_editor collab bridge — two tabs (BroadcastChannel)", () => {
           Module: unknown;
           __collab?: unknown;
         };
-        w.__collab = await w.KicadCollab.start(w.Module, window, { channel: ch, settleMs: 500 });
+        w.__collab = await w.KicadCollab.start(w.Module, window, { provider: { kind: "broadcastchannel", settleMs: 500 }, room: ch });
       }, channel);
     await startCollab(tabA);
     await startCollab(tabB);

web/pcbjam-shared

@@ -1 +1 @@
-Subproject commit 011962c0992c5c30eba5487033f0c3609712dd28
+Subproject commit 26d2d7951ba6a9574ff5149fb1a29a2a69d9176c

web/pnpm-lock.yaml

@@ -45,6 +45,9 @@ importers:
       '@ts-rest/core':
         specifier: ^3.52.1
         version: 3.52.1(@types/node@22.19.19)(zod@3.25.76)
+      yjs:
+        specifier: ^13.6.18
+        version: 13.6.31
       zod:
         specifier: ^3.24.1
         version: 3.25.76

web/standalone/src/wasm/collab/types.ts

@@ -1,18 +1,21 @@
-// Wire contract shared with the C++ bridge (wasm/bindings/pl_editor_embind.cpp).
-// Schema-agnostic by design: an item is just { id, type, …arbitrary fields }. The
-// reconciler hardcodes no field names — it diffs values keyed by field name.
+// Wire contract shared with the C++ bridge (wasm/bindings/*_embind.cpp).
+//
+// The data shapes (CollabItem / CollabDelta) and their zod schemas now live in
+// MIT `@pcbjam/shared` (collab-wire.ts, ysync 0008) so any consumer — this GPL
+// editor, tests, a backend — can validate the wasm from-to JSON against one
+// source of truth. This module re-exports them under the established local names
+// and keeps the RUNTIME adapter interface (CollabBridge), which is about how this
+// app talks to a live wasm Module, not about the data.
 
-export type CollabItem = {
-  id: string;
-  type: string;
-  [field: string]: unknown;
-};
+import {
+  emptyCollabDelta,
+  isEmptyCollabDelta,
+  type CollabDelta,
+  type CollabItem,
+} from "@pcbjam/shared";
 
-export type CollabDelta = {
-  added: CollabItem[];
-  changed: CollabItem[];
-  removed: string[]; // uuids
-};
+export { collabDeltaSchema, collabItemSchema, parseCollabDelta } from "@pcbjam/shared";
+export type { CollabDelta, CollabItem };
 
 /**
  * The two C++ bridge entry points + the emit hook, abstracted so the reconciler is
@@ -27,10 +30,5 @@ export interface CollabBridge {
   onDelta(cb: (deltaJson: string) => void): void;
 }
 
-export function emptyDelta(): CollabDelta {
-  return { added: [], changed: [], removed: [] };
-}
-
-export function isEmptyDelta(d: CollabDelta): boolean {
-  return d.added.length === 0 && d.changed.length === 0 && d.removed.length === 0;
-}
+export const emptyDelta = emptyCollabDelta;
+export const isEmptyDelta = isEmptyCollabDelta;