diff --git a/.claude/testament/2026-04-14.md b/.claude/testament/2026-04-14.md
index fce5874..1003a36 100644
--- a/.claude/testament/2026-04-14.md
+++ b/.claude/testament/2026-04-14.md
@@ -1,21 +1,19 @@
-# 05:30
+# core-di @abraham/reflection removal
 
-## Remove @abraham/reflection from core-di
+## inject.ts is not just a side effect
 
-### Not just metadata.ts
-
-The prompt says to update `metadata.ts`. Three files actually needed touching:
+The prompt targets `metadata.ts`. Three files actually need touching:
 
 1. `src/private/metadata.ts` - the WeakMap replacement
-2. `inject.ts` at the package root - this was the tsup inject target (prepended to every bundle). It imported `@abraham/reflection` to ensure the polyfill loaded before any bundle code. After the dependency was removed, this file needed its import cleared. The file still exists and `tsconfig.json` still references it as the inject entry; leaving it empty is correct and harmless.
-3. `package.json` / `pnpm-lock.yaml` - via `pnpm remove`
+2. `inject.ts` at the package root - this is the tsup inject entry, prepended to every bundle. It imported `@abraham/reflection` to bootstrap the polyfill before any bundle code ran. After the dependency is removed, the import must be cleared. The file should remain (tsconfig still references it); leaving it empty is correct.
+3. `package.json` / `pnpm-lock.yaml` via `pnpm remove`
 
-Missing the `inject.ts` change would have left a dead import and a broken build.
+Missing the `inject.ts` change leaves a dead import and a broken build with no obvious connection to `metadata.ts`.
 
-### WeakMap semantics are equivalent here
+## Why the WeakMap replacement is safe
 
-`@abraham/reflection` `getMetadata` walked the prototype chain (`ordinaryGetMetadata`). The WeakMap replacement does not. This is fine: both callers (`dependsOn.ts` and `ServiceProvider.ts`) always call with the class constructor directly, never with an instance or subclass. The prototype walk was never exercised by this codebase.
+`@abraham/reflection` `getMetadata` walked the prototype chain. The WeakMap replacement does not. This is safe because both callers (`dependsOn.ts` and `ServiceProvider.ts`) always pass the class constructor directly, never an instance or subclass. The prototype walk was never exercised.
 
-### Where metadata flows
+## Older CHANGELOG entries have bare version tags
 
-`dependsOn.ts` writes when a `@dependsOn` decorator fires. `ServiceProvider.ts` reads when resolving dependencies. The key is always `'design:dependencies'`, the value is `Record<string | symbol, ServiceIdentifier<T>>`. Nothing else in the package touches the metadata API.
+The changelog generator uses whatever `tag` field is in each release entry. Releases before the `core-di@X.Y.Z` tag format was adopted used bare `3.1.6`-style values. Those links will not resolve to real tags. This is pre-existing; do not touch it.
diff --git a/packages/core-di/CHANGELOG.md b/packages/core-di/CHANGELOG.md
index 7a24683..098573a 100644
--- a/packages/core-di/CHANGELOG.md
+++ b/packages/core-di/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.1.7] - 2026-04-14
+
+### Changed
+
+- Replace @abraham/reflection with a global WeakMap for metadata storage
+
+### Removed
+
+- Remove @abraham/reflection dependency
+
 ## [3.1.6] - 2026-02-28
 
 ### Changed
@@ -183,6 +193,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release.
 
+[3.1.7]: https://github.com/shellicar/ecosystem/releases/tag/core-di@3.1.7
 [3.1.6]: https://github.com/shellicar/ecosystem/releases/tag/3.1.6
 [3.1.5]: https://github.com/shellicar/ecosystem/releases/tag/3.1.5
 [3.1.4]: https://github.com/shellicar/ecosystem/releases/tag/3.1.4
diff --git a/packages/core-di/changes.jsonl b/packages/core-di/changes.jsonl
index 0edbc77..282dd12 100644
--- a/packages/core-di/changes.jsonl
+++ b/packages/core-di/changes.jsonl
@@ -64,3 +64,4 @@
 {"type":"release","version":"3.1.6","date":"2026-02-28","tag":"3.1.6"}
 {"description":"Replace @abraham/reflection with a global WeakMap for metadata storage","category":"changed"}
 {"description":"Remove @abraham/reflection dependency","category":"removed"}
+{"type":"release","version":"3.1.7","date":"2026-04-14","tag":"core-di@3.1.7"}
diff --git a/packages/core-di/package.json b/packages/core-di/package.json
index 1d59ce7..1bc7f81 100644
--- a/packages/core-di/package.json
+++ b/packages/core-di/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@shellicar/core-di",
   "private": false,
-  "version": "3.1.6",
+  "version": "3.1.7",
   "type": "module",
   "license": "MIT",
   "author": "Stephen Hellicar",