chore: upgrade @blocknote/* to 0.51, op-blocknote-extensions to 0.1.0 (FEASIBILITY)

Feasibility-study draft showing the openproject-side consumer changes
that go with op-blocknote-extensions v0.1.0 (opf/op-blocknote-extensions
PRs #133 and #134, not yet merged):

frontend
- @blocknote/{core,mantine,react}: ^0.44.2 → ^0.51.0
- op-blocknote-extensions: v0.0.26 → v0.1.0 (URL not live yet)
- OpBlockNoteEditor.tsx: BlockNote 0.51 tightened CollaborationOptions —
  omit the whole `collaboration` block when no hocuspocusProvider is
  wired up; cast the provider at the boundary because Hocuspocus's
  `awareness: Awareness | null` doesn't match BlockNote's
  `Awareness | undefined`.

hocuspocus (extensions/op-blocknote-hocuspocus)
- @blocknote/server-util: ^0.44.2 → ^0.51.0
- @blocknote/core (dev): ^0.44.2 → ^0.51.0
- op-blocknote-extensions: v0.0.18 → v0.1.0
- openProjectApi.ts: import the static specs from the new
  `op-blocknote-extensions/server` subpath (keeps @blocknote/react out
  of Node); align schema key with the post-refactor block type
  ("openProjectWorkPackage" → "openProjectWorkPackageBlock"); register
  the inline static spec so inline work-package chips survive the
  markdown export.

Lockfiles intentionally not regenerated: the v0.1.0 GitHub URL doesn't
resolve yet. Reviewers should treat this PR as a feasibility study, not
a mergeable artefact.

Refs: https://community.openproject.org/wp/74654

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

extensions/op-blocknote-hocuspocus/package.json

@@ -23,14 +23,14 @@
     "node": ">=22.18"
   },
   "dependencies": {
-    "@blocknote/server-util": "^0.44.2",
+    "@blocknote/server-util": "^0.51.0",
     "@hocuspocus/extension-logger": "^3.4.4",
     "@hocuspocus/server": "^3.4.0",
-    "op-blocknote-extensions": "https://github.com/opf/op-blocknote-extensions/releases/download/v0.0.18/op-blocknote-extensions-0.0.18.tgz",
+    "op-blocknote-extensions": "https://github.com/opf/op-blocknote-extensions/releases/download/v0.1.0/op-blocknote-extensions-0.1.0.tgz",
     "tsx": "^4.21.0"
   },
   "devDependencies": {
-    "@blocknote/core": "^0.44.2",
+    "@blocknote/core": "^0.51.0",
     "@eslint/js": "^9.35.0",
     "@eslint/json": "^1.2.0",
     "@stylistic/eslint-plugin": "^5.3.1",

extensions/op-blocknote-hocuspocus/src/extensions/openProjectApi.ts

@@ -2,7 +2,10 @@ import { BlockNoteSchema } from "@blocknote/core";
 import { ServerBlockNoteEditor } from "@blocknote/server-util";
 import type { beforeHandleMessagePayload, onAuthenticatePayload, onLoadDocumentPayload, onStoreDocumentPayload, onTokenSyncPayload } from "@hocuspocus/server";
 import { Extension } from "@hocuspocus/server";
-import { openProjectWorkPackageStaticBlockSpec } from "op-blocknote-extensions";
+import {
+  openProjectWorkPackageStaticBlockSpec,
+  openProjectWorkPackageStaticInlineSpec,
+} from "op-blocknote-extensions/server";
 import * as Y from "yjs";
 import { TokenExpired, TokenExpiryMissing, unauthorized } from "../closeEvents";
 import { decryptAndValidateToken } from "../services/tokenValidationService";
@@ -11,7 +14,10 @@ import { fetchResource } from "../services/resourceService";
 
 export const editorSchema = BlockNoteSchema.create().extend({
   blockSpecs: {
-    "openProjectWorkPackage": openProjectWorkPackageStaticBlockSpec(),
+    openProjectWorkPackageBlock: openProjectWorkPackageStaticBlockSpec(),
+  },
+  inlineContentSpecs: {
+    openProjectWorkPackageInline: openProjectWorkPackageStaticInlineSpec,
   },
 });