Implement Recipe, Planning, Shopping, Pantry, and Admin domains

Outside-in TDD for all 5 remaining domains (128 tests total):
- Recipe: CRUD, ingredients autocomplete/patch, tags, categories (27 tests)
- Planning: week plans, slots, confirm, suggestions, variety score, cooking logs (24 tests)
- Shopping: generate from plan, publish, check/add/remove items (15 tests)
- Pantry: CRUD with expiry sorting (11 tests)
- Admin: user management, password reset, audit logging (13 tests)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/src/main/java/com/recipeapp/planning/CookingLogController.java

@@ -0,0 +1,44 @@
+package com.recipeapp.planning;
+
+import com.recipeapp.planning.dto.*;
+import com.recipeapp.recipe.HouseholdResolver;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.security.Principal;
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/v1/cooking-logs")
+public class CookingLogController {
+
+    private final PlanningService planningService;
+    private final HouseholdResolver householdResolver;
+
+    public CookingLogController(PlanningService planningService, HouseholdResolver householdResolver) {
+        this.planningService = planningService;
+        this.householdResolver = householdResolver;
+    }
+
+    @PostMapping
+    public ResponseEntity<CookingLogResponse> createCookingLog(
+            Principal principal,
+            @Valid @RequestBody CreateCookingLogRequest request) {
+        UUID householdId = householdResolver.resolve(principal.getName());
+        UUID userId = householdResolver.resolveUserId(principal.getName());
+        CookingLogResponse response = planningService.createCookingLog(householdId, userId, request);
+        return ResponseEntity.status(HttpStatus.CREATED).body(response);
+    }
+
+    @GetMapping
+    public List<CookingLogResponse> listCookingLogs(
+            Principal principal,
+            @RequestParam(defaultValue = "30") int limit,
+            @RequestParam(defaultValue = "0") int offset) {
+        UUID householdId = householdResolver.resolve(principal.getName());
+        return planningService.listCookingLogs(householdId, limit, offset);
+    }
+}