docs: mark Step 9.1 as complete in PLAN.md

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PLAN.md

@@ -340,18 +340,18 @@ Check off items as completed. Each phase builds on the previous.
 
 ## Phase 9: Remaining Actions
 
-### Step 9.1: Animal Actions Routes
-- [ ] POST /actions/animal-attrs
-- [ ] POST /actions/hatch-recorded
-- [ ] POST /actions/animal-outcome
-- [ ] POST /actions/animal-cohort
-- [ ] POST /actions/animal-promote
-- [ ] POST /actions/animal-tag-add
-- [ ] POST /actions/animal-tag-end
-- [ ] POST /actions/animal-status-correct (admin-only)
-- [ ] Create form templates for each
-- [ ] Write tests for each action
-- [ ] **Commit checkpoint**
+### Step 9.1: Animal Actions Routes ✅
+- [x] POST /actions/animal-attrs
+- [x] POST /actions/hatch-recorded
+- [x] POST /actions/animal-outcome
+- [x] POST /actions/animal-cohort
+- [x] POST /actions/animal-promote
+- [x] POST /actions/animal-tag-add
+- [x] POST /actions/animal-tag-end
+- [x] POST /actions/animal-status-correct (admin-only)
+- [x] Create form templates for each
+- [x] Write tests for each action
+- [x] **Commit checkpoint**: 29ea3e2
 
 ### Step 9.2: Product Sold Route
 - [ ] POST /actions/product-sold