#29102 Add com.top_logic.layout.react module for React/SSE integration

enhancement

critical

#29088

Model-based access rights

#29108

Lightweight UI definition layer (TL Views) based on React UI components

major

#28694

Description of model parts as formatted text (rich text)

#28708

Enable Standard Selection in (Tree) Tables and Grids via TL Script

#29102

Add com.top_logic.layout.react module for React/SSE integration

#29221

Automatic determination of possible authorization configurations

#29349

XML Parsing Functions for TL-Script via XMLImporter

#29374

TL Script: gzip()

#29389

Code Completion for Variables ($) in the TL Script Editor

#29396

Conversation display for TL Views: object list element, file chips, card panels

#29399

Info Service Notifications: Display at the bottom instead of the top, and keep them in place when hovering over them with the mouse

#29400

Introduce a first-class "operation mode" service for applications (OperationMode enum + ApplicationModeService)

minor

#29085

Re-login on session timeout instead of redirect to login page

#29089

Extend the TL Script functions log() and info() to include selectable message levels (INFO, WARN, ERROR)

#29195

Problems with HTML attributes and TL script

#29306

TL Script: dateFormat() should accept an explicit timezone to format Calendar values losslessly

#29382

Expose a public, classpath-driven overload of `Workspace.getAppPaths`

#29385

The app archetype should automatically generate a standard git-ignored local-credentials overlay (tl_config) by default

#29392

Transaction Abort on Non-2xx Response

#29398

defect

major

#29383

A dead SOCKET_APPENDER (Chainsaw, localhost:4445) in the default logging configuration can cause logging to stall and operations to abort under heavy load

#29384

The TL-Script functions `resetSequence` and `generateSequenceId` generate a different sequence ID than `SequenceDefaultProvider` (in terms of suffix and context order), so they cannot reset a provider-managed sequence with a dynamic context

#29394

Editable tables in the React UI: Generalized row-set bindings for tabular editing in forms

#29410

Attribut filename der Structured-Text-Bildablage case-sensitive (binär) speichern

#29419

Understandable save failures and form validation feedback in the React view layer

minor

#28816

Reference value attributes only generate errors with SingleSelection

#29359

Inappropriate tooltips on some main tabs

#29360

Occasional error message in the log: "mainLayout" is null.

#29361

Invalid database definition for tag

#29363

Missing validation of dialogs in GOTO statements to dialogs of invisible parents

#29380

Context-sensitive auto-numbering fails if the context and the numbered object are created within a single transaction

#29381

Double-clicking in a graphic component does not work reliably

#29390

Subtree selection ends too early if the lowest level is not included in the level filter

#29393

URL routing in the React view layer is broken: ForwardingReactContext does not delegate getRouteManager()

#29401

Images in an image drop zone cannot be copied or saved using the browser's context menu

#29402

Tree selection is lost when the view is refreshed (invalidated)

#29412

Flaky TestDynamicComponentService.testIncrementalUpdates: asserts on asynchronous WatchService event after a fixed 10ms sleep

#29416

Anzeige des Änderungslogs schlägt fehl, wenn parallel Änderungen committet werden

#29420

FlowDiagram: Fehlerfall im row-wise Sub-Grid: subGridCols=2 und subGridStartCol=1

#29426

FlowDiagram: Text in PDF-eingebettetem Diagramm ist nicht selektierbar

task

major

#29407

Security-Scan: npm-Abhängigkeiten der React-Module aktualisieren

#29408

Security-Scan: httpcore5 anheben; pdfbox-/azure-Findings bewerten

minor

#29415

Slim down the repository CLAUDE.md and consolidate developer guidance into skills and FAQ articles

enhancement

major

#29102

Add com.top_logic.layout.react module for React/SSE integration

ReactUI

React Integration Module

New module com.top_logic.layout.react that enables React-based UI controls in TopLogic with server-to-client state updates delivered via Server-Sent Events (SSE).

This enables incremental migration from server-rendered HTML controls to client-rendered React controls, while both types coexist and update together within the same page.

Components

Wire Protocol (msgbuf)

sse.proto defines the SSE event hierarchy using msgbuf:

StateEvent / PatchEvent - full state replacement and incremental patches for React controls
ContentReplacement / ElementReplacement / RangeReplacement / FragmentInsertion - DOM mutations for non-React controls
PropertyUpdate / CssClassUpdate - attribute and class updates
JSSnipplet / FunctionCall - JavaScript execution

Server-Side Java

ReactControl - mounts a React component via TLReact.mount(), delivers state via SSE
ReactFormFieldControl - form field variant with ValueChanged command handling
SSEUpdateQueue - per-session event queue with AsyncContext connections
ClientActionConverter - converts existing ClientAction objects to SSE protocol events, enabling non-React controls to participate in SSE delivery
ReactComponentRegistry - ConfiguredManagedClass mapping TopLogic model types to React component modules
SSEServlet - /react-api/events endpoint establishing SSE connections
ReactServlet - /react-api/command and /react-api/state endpoints for client-to-server communication

TypeScript/React Client

Bridge library(tl-react-bridge.js) built with Vite/React:

Component registry with register() / getComponent()
SSE client with automatic reconnect and DOM action processing
React hooks: useTLState(), useTLCommand(), useTLFieldValue()
MutationObserver-based auto-unmount
6 built-in controls: TLTextInput, TLNumberInput, TLDatePicker, TLSelect, TLCheckbox, TLTable

tl-core Modifications

Added public accessors to ClientAction subclasses to enable the converter:

DOMModification.getFragment()
RangeReplacement.getStopID()
JSSnipplet.getCode() and JSSnipplet.getCodeFragment()

Open TODOs

ReactServlet.handleCommand(): full control resolution via FrameScope / subsession locking
ReactFormFieldControl: incremental SSE patches instead of full repaint on field changes