diff --git a/docs/plans/E5M1-prototype-backlog.md b/docs/plans/E5M1-prototype-backlog.md
index 00795c1..47fd303 100644
--- a/docs/plans/E5M1-prototype-backlog.md
+++ b/docs/plans/E5M1-prototype-backlog.md
@@ -139,8 +139,10 @@ Working backlog for **Epic 5 — Slice 1** ([combat rules MVP](../decomposition/
 
 **Acceptance criteria**
 
-- [ ] Unknown ability id fails hotbar/cast validation same as today.
-- [ ] All four prototype ids resolve with expected **`baseDamage`** / **`cooldownSeconds`**.
+- [x] Unknown ability id fails hotbar/cast validation same as today.
+- [x] All four prototype ids resolve with expected **`baseDamage`** / **`cooldownSeconds`**.
+
+**Landed ([NEO-79](https://linear.app/neon-sprawl/issue/NEO-79)):** [`IAbilityDefinitionRegistry`](../../server/NeonSprawl.Server/Game/Combat/IAbilityDefinitionRegistry.cs) + DI; hotbar/cast migrated — [NEO-79-implementation-plan.md](NEO-79-implementation-plan.md).
 
 ---
 
diff --git a/docs/plans/NEO-79-implementation-plan.md b/docs/plans/NEO-79-implementation-plan.md
index ddde48e..b45db67 100644
--- a/docs/plans/NEO-79-implementation-plan.md
+++ b/docs/plans/NEO-79-implementation-plan.md
@@ -46,10 +46,10 @@
 
 ## Acceptance criteria checklist
 
-- [ ] Unknown ability id fails hotbar/cast validation same as today (`unknown_ability`, no behavior regression).
-- [ ] All four prototype ids resolve with expected **`baseDamage`** / **`cooldownSeconds`** via `TryGetDefinition`.
-- [ ] DI resolves `IAbilityDefinitionRegistry` at host startup (test via `InMemoryWebApplicationFactory`).
-- [ ] Unit tests (AAA): lookup for known prototype ids; unknown id returns false without throwing; `TryNormalizeKnown` accepts trimmed/case-variant input for catalog ids; `GetDefinitionsInIdOrder` returns four rows ordered by `id`.
+- [x] Unknown ability id fails hotbar/cast validation same as today (`unknown_ability`, no behavior regression).
+- [x] All four prototype ids resolve with expected **`baseDamage`** / **`cooldownSeconds`** via `TryGetDefinition`.
+- [x] DI resolves `IAbilityDefinitionRegistry` at host startup (test via `InMemoryWebApplicationFactory`).
+- [x] Unit tests (AAA): lookup for known prototype ids; unknown id returns false without throwing; `TryNormalizeKnown` accepts trimmed/case-variant input for catalog ids; `GetDefinitionsInIdOrder` returns four rows ordered by `id`.
 
 ## Technical approach
 
@@ -118,3 +118,9 @@ No Bruno or manual QA for this story (server-only DI + internal migration; HTTP
 | **Case-only mismatch** — client sends id not in catalog after normalize | **Deny `unknown_ability`** — same as today; catalog ids are lowercase frozen strings. | **adopted** |
 | **Dual lookup surfaces** — `TryGetDefinition` vs `TryNormalizeKnown` | **Keep both** — hotbar/cast need normalize-only; combat/HTTP need row lookup without re-implementing trim rules. | **adopted** |
 | **Test const indirection** | **Keep `PrototypeAbilityRegistry` const strings** in existing tests — no mass string-literal churn. | **adopted** |
+
+## Reconciliation (implementation)
+
+- **`IAbilityDefinitionRegistry`** + **`AbilityDefinitionRegistry`** registered in **`AddAbilityDefinitionCatalog`**; catalog-only eager resolve unchanged in **`Program.cs`**.
+- **`HotbarLoadoutApi`** / **`AbilityCastApi`** inject registry and call **`TryNormalizeKnown`**; **`PrototypeAbilityRegistry`** reduced to id constants.
+- **10** new AAA tests in **`AbilityDefinitionRegistryTests`**; **31** existing AbilityInput tests unchanged and green (41 total in filtered run).