diff --git a/CHANGELOG.md b/CHANGELOG.md
index e61cfd4..1ff2f13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed - `distro.just` build and installation
+
+- `distro::install`: now builds all 5 server binaries in one `cargo build --release` pass
+  - Added `vapora-a2a` and `vapora-mcp-server` to the explicit build list (were missing; copied from stale `target/release/` if present)
+  - Added `vapora-a2a` binary to the install copy list (was absent entirely)
+  - Added `UI=true` optional parameter: runs `trunk build --release` before copying; validates `trunk` is available first
+  - Missing binary → explicit warning with count instead of silent skip; exits non-zero if zero installed
+- `distro::install-targets`: added `wasm32-unknown-unknown`; changed to idempotent check (`rustup target list --installed`) before calling `rustup target add`
+- `distro::build-all-targets`: explicitly excludes `wasm32-unknown-unknown` from the workspace loop (WASM requires per-crate build via `trunk`; the loop would fail on non-WASM crates)
+
 ### Added - NatsBridge + A2A JetStream Integration
 
 #### `vapora-agents` — NatsBridge (real JetStream)
@@ -356,11 +366,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - Environment variable overrides (VAPORA_CONFIG, BUDGET_CONFIG_PATH)
   - Example: `vapora-backend --config /etc/vapora/backend.toml`
 
-- **Enhanced Distribution**: Improved binary installation and management
-  - `just distro::install` builds and installs all 4 binaries
-  - Cross-compilation target management: `just distro::list-targets`, `just distro::build-target`
-  - Custom installation directories: `just distro::install /usr/local/bin`
-  - Binaries: vapora (CLI), vapora-backend (API), vapora-agents (orchestrator), vapora-mcp-server (gateway)
+- **Enhanced Distribution**: Binary installation and cross-compilation target management
+  - `just distro::install` — builds and installs server binaries to `~/.local/bin` (or `DIR=<path>`)
+  - `just distro::install UI=true` — additionally builds frontend via `trunk --release`
+  - Cross-compilation: `just distro::list-targets`, `just distro::install-targets`, `just distro::build-target TARGET`
+  - Binaries: `vapora` (CLI), `vapora-backend` (API), `vapora-agents` (orchestrator), `vapora-mcp-server` (gateway), `vapora-a2a` (A2A server)
 
 - **Code Quality**: Zero compiler warnings in vapora codebase
   - Systematic dead_code annotations for intentional scaffolding (Phase 3 workflow system)