docs(changelog): cut the 1.4.0 release notes

Author: xt0n1-t3ch

CHANGELOG.md

@@ -4,16 +4,23 @@ All notable changes to this project are documented here. The format is based on
 
 ## [Unreleased]
 
-### Changed
-- Refocus Reva on the web app: Next.js 16 + React 19 + Tailwind v4 frontend, ASP.NET Core .NET 10 API, SQLite EF Core persistence, and the existing reinsurance domain core.
-- Remove the retired non-web shell from product docs and onboarding material.
-- Present the agentic copilot as a modern Vercel AI SDK and OpenAI-compatible streaming implementation, vendor-neutral and provider-configurable.
+## [1.4.0] - 2026-06-19
 
 ### Added
-- Multi-provider model story covering local Ollama, OpenAI-compatible endpoints, and HuggingFace cloud paths when configured.
-- Knowledge Hub positioning for searchable analyst reference material.
-- Agentic copilot positioning with real backend tools for document lookup, review, correction, export, and knowledge search.
-- Real-time processing stream positioning for stage, line, field, reconciliation, and completion events.
+- Real-time document processing stream: a live view that shows each source line as it is read, then each extracted field, schema mapping, and reconciliation, on a stage-by-stage timeline. Documents without optical character recognition stream their parsed source text.
+- Guided Showcase launched from the header: a step-by-step tour of every capability, with a one-click action to load the bundled demonstration dataset so a presentation needs no external files.
+- Review template view: a Source and Template toggle that renders each record in a clean, standards-ordered layout for presentation.
+- Assistant date and time tool so the copilot answers questions about the current date.
+- Windows application icon set to the Reva brand mark.
+
+### Changed
+- Refocused Reva on the web app: Next.js 16 + React 19 + Tailwind v4 frontend, ASP.NET Core .NET 10 API, SQLite EF Core persistence (SQL Server configurable), and the reinsurance domain core. The retired non-web shell was removed.
+- Reasoning controls enable model thinking at Medium and above on capable providers, and the streaming layer forwards reasoning when a provider emits it.
+- Professional-language pass across the interface and documentation.
+
+### Fixed
+- The assistant no longer renders an empty message bubble; a live working indicator shows elapsed time until the answer begins to stream.
+- The work queue requests a page image only for formats that render one, keeping the browser console clean.
 
 ## [1.3.0] - 2026-06-16