chore(release): v0.5.0

Finalize the 0.5.0 changelog (agent comms, split memory, cross-harness delivery,
statusline segment) and refresh the npm + PyPI package READMEs to the context-and-
communication-layer framing. All version surfaces are already at 0.5.0 / RELEASE_MINOR 5.

Author: Goldziher

CHANGELOG.md

@@ -8,7 +8,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 <!-- Keep a Changelog repeats Added/Changed/Fixed headings per version. -->
 <!-- markdownlint-disable MD024 -->
 
-## [Unreleased]
+## [0.5.0] — 2026-06-20
+
+Minor release: `RELEASE_MINOR` bumps 4 → 5, so the blob, Fjall-index, and LanceDB schema versions
+advance — the first `basemind scan` / `serve` after upgrading **wipes and rebuilds the `.basemind/`
+cache and the LanceDB store in place**. Headline: basemind becomes a multi-agent **communication
+substrate** (scoped rooms + per-agent inbox) on top of its context layer, with split memory and
+cross-harness delivery.
 
 ### Added
 
@@ -445,7 +451,7 @@ crates.io.
 - `search_documents` post-processing releases the store read-lock before
   blob I/O; `ahash::AHashMap` / `AHashSet` on the post-filter path.
 
-[Unreleased]: https://github.com/Goldziher/basemind/compare/v0.4.0...HEAD
+[0.5.0]: https://github.com/Goldziher/basemind/compare/v0.4.0...v0.5.0
 [0.4.0]: https://github.com/Goldziher/basemind/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/Goldziher/basemind/compare/v0.2.6...v0.3.0
 [0.2.6]: https://github.com/Goldziher/basemind/compare/v0.2.5...v0.2.6

npm-package/README.md

@@ -1,7 +1,8 @@
 # basemind
 
-Full AI context layer for coding agents — code-map, document RAG, shared memory, web crawl,
-git history. 300+ languages, one MCP server.
+The context and communication layer for coding agents — a shared code-map, document RAG, memory,
+web crawl, git history, and agent-to-agent comms so multiple agents coordinate while they work.
+300+ languages, one MCP server.
 
 <!-- markdownlint-disable-next-line MD013 -->
 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/Goldziher/basemind/blob/main/LICENSE)

pip-package/README.md

@@ -1,7 +1,8 @@
 # basemind
 
-Full AI context layer for coding agents — code-map, document RAG, shared memory, web crawl,
-git history. 300+ languages, one MCP server.
+The context and communication layer for coding agents — a shared code-map, document RAG, memory,
+web crawl, git history, and agent-to-agent comms so multiple agents coordinate while they work.
+300+ languages, one MCP server.
 
 <!-- markdownlint-disable-next-line MD013 -->
 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/Goldziher/basemind/blob/main/LICENSE)