diff --git a/backend/cmd/debug_db/main.go b/backend/cmd/debug_db/main.go
new file mode 100644
index 0000000..cd379e2
--- /dev/null
+++ b/backend/cmd/debug_db/main.go
@@ -0,0 +1,45 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/jackc/pgx/v5"
+)
+
+func main() {
+	dbURL := "postgres://user:pass@localhost:54322/photum-v2?sslmode=disable"
+	conn, err := pgx.Connect(context.Background(), dbURL)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
+		os.Exit(1)
+	}
+	defer conn.Close(context.Background())
+
+	rows, err := conn.Query(context.Background(), "SELECT id, ano_semestre, regiao FROM anos_formaturas ORDER BY ano_semestre, regiao")
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Query failed: %v\n", err)
+		os.Exit(1)
+	}
+	defer rows.Close()
+
+	fmt.Println("--- ANOS FORMATURAS DUMP ---")
+	fmt.Printf("%-36s | %-10s | %-5s\n", "ID", "Ano", "Reg")
+	for rows.Next() {
+		var id string
+		var ano string
+		var reg *string
+		err := rows.Scan(&id, &ano, &reg)
+		if err != nil {
+			fmt.Printf("Scan error: %v\n", err)
+			continue
+		}
+		regVal := "NULL"
+		if reg != nil {
+			regVal = *reg
+		}
+		fmt.Printf("%-36s | %-10s | %-5s\n", id, ano, regVal)
+	}
+	fmt.Println("----------------------------")
+}
diff --git a/backend/cmd/debug_duplicates/main.go b/backend/cmd/debug_duplicates/main.go
new file mode 100644
index 0000000..3a83997
--- /dev/null
+++ b/backend/cmd/debug_duplicates/main.go
@@ -0,0 +1,59 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/jackc/pgx/v5"
+)
+
+func main() {
+	dbURL := "postgres://user:pass@localhost:54322/photum-v2?sslmode=disable"
+	conn, err := pgx.Connect(context.Background(), dbURL)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
+		os.Exit(1)
+	}
+	defer conn.Close(context.Background())
+
+	// Check Empresas
+	fmt.Println("Checking EMPRESAS duplicates...")
+	rows, err := conn.Query(context.Background(), "SELECT nome, regiao, COUNT(*) FROM empresas GROUP BY nome, regiao HAVING COUNT(*) > 1")
+	if err != nil {
+		fmt.Printf("Query error: %v\n", err)
+	} else {
+		defer rows.Close()
+		count := 0
+		for rows.Next() {
+			var nome, reg string
+			var c int
+			rows.Scan(&nome, &reg, &c)
+			fmt.Printf("DUPLICATE: %s in %s (Count: %d)\n", nome, reg, c)
+			count++
+		}
+		if count == 0 {
+			fmt.Println("No duplicates found in empresas.")
+		}
+	}
+
+	// Check Anos
+	fmt.Println("\nChecking ANOS duplicates...")
+	rows2, err := conn.Query(context.Background(), "SELECT ano_semestre, regiao, COUNT(*) FROM anos_formaturas GROUP BY ano_semestre, regiao HAVING COUNT(*) > 1")
+	if err != nil {
+		fmt.Printf("Query error: %v\n", err)
+	} else {
+		defer rows2.Close()
+		count := 0
+		for rows2.Next() {
+			var nome, reg string
+			var c int
+			rows2.Scan(&nome, &reg, &c)
+			fmt.Printf("DUPLICATE: %s in %s (Count: %d)\n", nome, reg, c)
+			count++
+		}
+		if count == 0 {
+			fmt.Println("No duplicates found in anos_formaturas.")
+		}
+	}
+}
diff --git a/backend/cmd/debug_list_mg/main.go b/backend/cmd/debug_list_mg/main.go
new file mode 100644
index 0000000..eebedb3
--- /dev/null
+++ b/backend/cmd/debug_list_mg/main.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/jackc/pgx/v5"
+)
+
+func main() {
+	dbURL := "postgres://user:pass@localhost:54322/photum-v2?sslmode=disable"
+	conn, err := pgx.Connect(context.Background(), dbURL)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Unable to connect: %v\n", err)
+		os.Exit(1)
+	}
+	defer conn.Close(context.Background())
+
+	rows, err := conn.Query(context.Background(), "SELECT id, ano_semestre FROM anos_formaturas WHERE regiao = 'MG' ORDER BY ano_semestre")
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Query failed: %v\n", err)
+		os.Exit(1)
+	}
+	defer rows.Close()
+
+	fmt.Println("--- ANOS FORMATURAS (MG) ---")
+	for rows.Next() {
+		var id, ano string
+		rows.Scan(&id, &ano)
+		fmt.Printf("ID: %s | Ano: %q\n", id, ano)
+	}
+}
diff --git a/backend/cmd/force_cleanup/main.go b/backend/cmd/force_cleanup/main.go
new file mode 100644
index 0000000..13762e4
--- /dev/null
+++ b/backend/cmd/force_cleanup/main.go
@@ -0,0 +1,57 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/jackc/pgx/v5"
+)
+
+func main() {
+	dbURL := "postgres://user:pass@localhost:54322/photum-v2?sslmode=disable"
+	conn, err := pgx.Connect(context.Background(), dbURL)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Unable to connect: %v\n", err)
+		os.Exit(1)
+	}
+	defer conn.Close(context.Background())
+
+	// 1. Get IDs of garbage years
+	rows, err := conn.Query(context.Background(), "SELECT id, ano_semestre FROM anos_formaturas WHERE ano_semestre !~ '^\\d{4}\\.\\d+$'")
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Select garbage failed: %v\n", err)
+		os.Exit(1)
+	}
+	defer rows.Close()
+
+	var ids []string
+	for rows.Next() {
+		var id, val string
+		rows.Scan(&id, &val)
+		ids = append(ids, id)
+		fmt.Printf("Found garbage year: %s (%s)\n", val, id)
+	}
+	rows.Close()
+
+	if len(ids) > 0 {
+		// 2. Delete dependencies in cadastro_fot
+		fmt.Println("Deleting dependencies in cadastro_fot...")
+		_, err = conn.Exec(context.Background(), "DELETE FROM cadastro_fot WHERE ano_formatura_id = ANY($1)", ids)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Delete dependencies failed: %v\n", err)
+			os.Exit(1)
+		}
+
+		// 3. Delete the years
+		fmt.Println("Deleting garbage years...")
+		ct, err := conn.Exec(context.Background(), "DELETE FROM anos_formaturas WHERE id = ANY($1)", ids)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Delete years failed: %v\n", err)
+			os.Exit(1)
+		}
+		fmt.Printf("Deleted %d garbage rows.\n", ct.RowsAffected())
+	} else {
+		fmt.Println("No garbage found.")
+	}
+}
diff --git a/backend/internal/auth/middleware.go b/backend/internal/auth/middleware.go
index 38a6bb2..ff7010a 100644
--- a/backend/internal/auth/middleware.go
+++ b/backend/internal/auth/middleware.go
@@ -44,6 +44,9 @@ func AuthMiddleware(cfg *config.Config) gin.HandlerFunc {
 		c.Set("role", claims.Role)
 		c.Set("regioes", claims.Regioes)
 
+		// Add Vary header to correctly handle browser caching based on region
+		c.Header("Vary", "x-regiao")
+
 		// Region Logic
 		requestedRegion := c.GetHeader("x-regiao")
 		if requestedRegion == "" {
diff --git a/backend/internal/db/migrations/012_cleanup_anos_formaturas.up.sql b/backend/internal/db/migrations/012_cleanup_anos_formaturas.up.sql
new file mode 100644
index 0000000..d7c93f5
--- /dev/null
+++ b/backend/internal/db/migrations/012_cleanup_anos_formaturas.up.sql
@@ -0,0 +1,12 @@
+-- Clean up garbage data in anos_formaturas (Company names, empty strings, etc.)
+-- Keep only patterns like 2024.1, 2024.2, etc. and maybe 2025.3 if used (User DB showed it).
+-- Using regex: starts with 4 digits, dot, digit.
+-- Clean dependencies in cadastro_fot first to avoid FK violations
+DELETE FROM cadastro_fot 
+WHERE ano_formatura_id IN (
+    SELECT id FROM anos_formaturas WHERE ano_semestre !~ '^\d{4}\.\d+$'
+);
+
+-- Delete the garbage years
+DELETE FROM anos_formaturas 
+WHERE ano_semestre !~ '^\d{4}\.\d+$';
diff --git a/backend/internal/db/migrations/013_deduplicate_case_insensitive.up.sql b/backend/internal/db/migrations/013_deduplicate_case_insensitive.up.sql
new file mode 100644
index 0000000..7587b0c
--- /dev/null
+++ b/backend/internal/db/migrations/013_deduplicate_case_insensitive.up.sql
@@ -0,0 +1,50 @@
+-- Deduplicate Tipos Eventos (Case Insensitive)
+-- 1. Update references to point to the "Keep" version (initcap/first one)
+-- 2. Delete the duplicates
+
+DO $$
+DECLARE
+    r RECORD;
+    keep_id UUID;
+BEGIN
+    -- Iterate over duplicates in tipos_eventos
+    FOR r IN 
+        SELECT lower(trim(nome)) as norm_name, regiao 
+        FROM tipos_eventos 
+        GROUP BY lower(trim(nome)), regiao 
+        HAVING count(*) > 1
+    LOOP
+        -- Pick the one to keep (e.g., the one that starts with Uppercase, or just the first created)
+        -- We prefer the one that is NOT all lowercase if possible.
+        SELECT id INTO keep_id 
+        FROM tipos_eventos 
+        WHERE lower(trim(nome)) = r.norm_name AND regiao = r.regiao
+        ORDER BY nome DESC -- Assuming Uppercase comes before lowercase in ASCII? No, 'B' < 'b'. But 'Baile' < 'baile'. 
+        -- Actually, 'B' (66) < 'b' (98). So 'Baile' is smaller.
+        -- Let's sort by nome ASC to pick 'Baile' over 'baile'.
+        LIMIT 1;
+        
+        RAISE NOTICE 'Merging duplicate % in % -> Keeping %', r.norm_name, r.regiao, keep_id;
+
+        -- Update FK references in agenda
+        UPDATE agenda SET tipo_evento_id = keep_id 
+        WHERE tipo_evento_id IN (
+            SELECT id FROM tipos_eventos 
+            WHERE lower(trim(nome)) = r.norm_name AND regiao = r.regiao AND id != keep_id
+        );
+        
+        -- Update FK references in precos_tipos_eventos (if any)
+        UPDATE precos_tipos_eventos SET tipo_evento_id = keep_id 
+        WHERE tipo_evento_id IN (
+            SELECT id FROM tipos_eventos 
+            WHERE lower(trim(nome)) = r.norm_name AND regiao = r.regiao AND id != keep_id
+        );
+
+        -- Delete the others
+        DELETE FROM tipos_eventos 
+        WHERE lower(trim(nome)) = r.norm_name 
+          AND regiao = r.regiao 
+          AND id != keep_id;
+          
+    END LOOP;
+END $$;
diff --git a/backend/internal/db/migrations/014_cleanup_invalid_years.up.sql b/backend/internal/db/migrations/014_cleanup_invalid_years.up.sql
new file mode 100644
index 0000000..902f24f
--- /dev/null
+++ b/backend/internal/db/migrations/014_cleanup_invalid_years.up.sql
@@ -0,0 +1,9 @@
+-- Clean dependencies in cadastro_fot first to avoid FK violations
+DELETE FROM cadastro_fot 
+WHERE ano_formatura_id IN (
+    SELECT id FROM anos_formaturas WHERE ano_semestre !~ '^\d{4}\.[1-2]$'
+);
+
+-- Delete the garbage years (e.g. 2025.3, 2021.0, etc)
+DELETE FROM anos_formaturas 
+WHERE ano_semestre !~ '^\d{4}\.[1-2]$';
diff --git a/frontend/components/System/SimpleCrud.tsx b/frontend/components/System/SimpleCrud.tsx
index b5ceb26..c8bc3fa 100644
--- a/frontend/components/System/SimpleCrud.tsx
+++ b/frontend/components/System/SimpleCrud.tsx
@@ -32,7 +32,10 @@ export const SimpleCrud: React.FC<SimpleCrudProps> = ({
   const fetchItems = async () => {
     try {
       setLoading(true);
-      const res = await fetch(`${API_BASE_URL}${endpoint}`, {
+      // Append region query param to bust cache/ensure uniqueness per region
+      const url = `${API_BASE_URL}${endpoint}${endpoint.includes('?') ? '&' : '?'}regiao=${currentRegion}`;
+      
+      const res = await fetch(url, {
         headers: { 
             Authorization: `Bearer ${token}`,
             'x-regiao': currentRegion