chore: update CHANGELOG.md and bump version to 0.4.0-alpha, reflecting enhancements to the Campaigns component

CHANGELOG.md

@@ -4,11 +4,16 @@ All notable changes to Pulse (frontend and product) are documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and Pulse uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html) with a **0.x.y** version scheme while in initial development. The leading `0` indicates that the public API and behaviour may change until we release **1.0.0**.
 
+## [0.4.0-alpha] - 2026-02-11
+
+### Changed
+
+- **Campaigns block improvements (PULSE-53).** The Campaigns card now supports sortable columns (Source, Medium, Campaign, Visitors, Pageviews), source favicons with display names (matching Top Referrers), a Pageviews column, and em-dash (—) for empty Medium/Campaign. Loading state uses a skeleton instead of a spinner. Rows use stable keys for better React reconciliation. An Export button exports campaigns to CSV; the main dashboard Export (PDF/Excel) also includes campaigns when available.
+
 ## [0.3.0-alpha] - 2026-02-11
 
 ### Changed
 
-- **Campaigns block improvements.** The Campaigns card now supports sortable columns (Source, Medium, Campaign, Visitors, Pageviews), source favicons with display names (matching Top Referrers), a Pageviews column, and em-dash (—) for empty Medium/Campaign. Loading state uses a skeleton instead of a spinner. Rows use stable keys for better React reconciliation. An Export button exports campaigns to CSV; the main dashboard Export (PDF/Excel) also includes campaigns when available.
 - **Top Referrers favicons (PULSE-52).** The Top Referrers card now shows real site favicons (e.g. Google, ChatGPT, Instagram) when the referrer is a domain or URL. “Direct” and “Unknown” keep the globe icon; if a favicon fails to load, the previous icon is shown as fallback.
 - **Referrer display names.** Referrers now show friendly names (e.g. “Google”, “Kagi”) using a heuristic from the hostname plus a small override map for famous brands (ChatGPT, LinkedIn, X, etc.). New sites get a sensible name without being added to a list.
 - **Top Referrers merged by name.** Rows that map to the same display name (e.g. `chatgpt.com` and `https://chatgpt.com/...`) are merged into one row with combined pageviews, so the same source no longer appears twice.
@@ -30,7 +35,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ---
 
-[Unreleased]: https://github.com/ciphera-net/pulse/compare/v0.3.0-alpha...HEAD
+[Unreleased]: https://github.com/ciphera-net/pulse/compare/v0.4.0-alpha...HEAD
+[0.4.0-alpha]: https://github.com/ciphera-net/pulse/compare/v0.3.0-alpha...v0.4.0-alpha
 [0.3.0-alpha]: https://github.com/ciphera-net/pulse/compare/v0.2.0-alpha...v0.3.0-alpha
 [0.2.0-alpha]: https://github.com/ciphera-net/pulse/compare/v0.1.0-alpha...v0.2.0-alpha
 [0.1.0-alpha]: https://github.com/ciphera-net/pulse/releases/tag/v0.1.0-alpha

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pulse-frontend",
-  "version": "0.3.0-alpha",
+  "version": "0.4.0-alpha",
   "private": true,
   "scripts": {
     "dev": "next dev",