fix(webapp): require explicit native button types (#4692)

## Summary

Add explicit types to native dashboard buttons and enforce
`react/button-has-type`.

This prevents action buttons from accidentally submitting a surrounding
form. Shared button primitives retain their caller-selected submit and
reset semantics with documented lint exceptions.

Base: [#4691](#4691)

Author: carderne

.oxlintrc.json

@@ -115,6 +115,7 @@
     {
       "files": ["apps/webapp/app/**/*.ts", "apps/webapp/app/**/*.tsx"],
       "rules": {
+        "react/button-has-type": "error",
         "react/jsx-no-useless-fragment": "error",
         "react/no-unstable-nested-components": "error",
         "react/rules-of-hooks": "error",

apps/webapp/app/components/code/TSQLResultsTable.tsx

@@ -970,6 +970,7 @@ function HeaderCellContent({
       )}
       {onFilterClick && (
         <button
+          type="button"
           onClick={(e) => {
             e.stopPropagation();
             onFilterClick();

apps/webapp/app/components/navigation/SideMenuItem.tsx

@@ -240,6 +240,7 @@ export function SideMenuItem({
 }
 
 /** Button styled to match {@link SideMenuItem}, for entries that open a dialog rather than navigate. */
+/* oxlint-disable react/button-has-type -- Callers can select button, reset, or submit semantics. */
 export const SideMenuItemButton = forwardRef<
   HTMLButtonElement,
   {
@@ -276,3 +277,4 @@ export const SideMenuItemButton = forwardRef<
     </button>
   );
 });
+/* oxlint-enable react/button-has-type */

apps/webapp/app/components/primitives/AppliedFilter.tsx

@@ -67,6 +67,7 @@ export function AppliedFilter({
       </div>
       {removable && (
         <button
+          type="button"
           className={cn(
             "group flex size-6 items-center justify-center focus-custom",
             variantClassName.clear

apps/webapp/app/components/primitives/Buttons.tsx

@@ -374,6 +374,7 @@ type ButtonPropsType = Pick<
 > &
   React.ComponentProps<typeof ButtonContent>;
 
+/* oxlint-disable react/button-has-type -- Callers can select button, reset, or submit semantics. */
 export const Button = forwardRef<HTMLButtonElement, ButtonPropsType>(
   ({ type, disabled, autoFocus, onClick, "aria-label": ariaLabel, ...props }, ref) => {
     const innerRef = useRef<HTMLButtonElement>(null);
@@ -435,6 +436,7 @@ export const Button = forwardRef<HTMLButtonElement, ButtonPropsType>(
     return buttonElement;
   }
 );
+/* oxlint-enable react/button-has-type */
 
 type LinkPropsType = Pick<
   LinkProps,

apps/webapp/app/components/primitives/Popover.tsx

@@ -51,6 +51,7 @@ function PopoverSectionHeader({
   );
 }
 
+/* oxlint-disable react/button-has-type -- The trigger supports form button semantics. */
 const PopoverMenuItem = React.forwardRef<
   HTMLButtonElement | HTMLAnchorElement,
   {
@@ -141,6 +142,7 @@ const PopoverMenuItem = React.forwardRef<
   }
 );
 PopoverMenuItem.displayName = "PopoverMenuItem";
+/* oxlint-enable react/button-has-type */
 
 function PopoverCustomTrigger({
   isOpen,

apps/webapp/app/components/primitives/Select.tsx

@@ -582,6 +582,7 @@ export function SelectButtonItem({
 }: SelectButtonItemProps) {
   const render = (
     <button
+      type="button"
       onClick={onClick}
       className={cn("block w-full text-left", selectItemClasses, props.className)}
     />

apps/webapp/app/components/primitives/Table.tsx

@@ -433,6 +433,7 @@ export const TableCell = forwardRef<HTMLTableCellElement, TableCellProps>(
             <div className={cn(flexClasses, "gap-2")}>
               {leadingContent}
               <button
+                type="button"
                 onClick={onClick}
                 className={cn(
                   "inline-flex cursor-pointer items-center gap-2 focus:outline-hidden",
@@ -446,6 +447,7 @@ export const TableCell = forwardRef<HTMLTableCellElement, TableCellProps>(
             </div>
           ) : (
             <button
+              type="button"
               onClick={onClick}
               className={cn("cursor-pointer focus:outline-hidden", flexClasses, actionClassName)}
               tabIndex={isTabbableCell ? 0 : -1}

apps/webapp/app/components/primitives/Toast.tsx

@@ -128,6 +128,7 @@ export function ToastUI({
           {actionNode}
         </div>
         <button
+          type="button"
           className={cn(
             "-mr-1 ms-auto rounded p-2 text-text-dimmed transition hover:text-text-bright",
             title && "-mt-1"

apps/webapp/app/components/runs/v3/ai/AIChatMessages.tsx

@@ -344,6 +344,7 @@ export function ToolUseRow({ tool }: { tool: ToolUse }) {
           >
             {availableTabs.map((tab) => (
               <button
+                type="button"
                 key={tab}
                 onClick={() => handleTabClick(tab)}
                 className={`px-2.5 py-1 text-[11px] capitalize transition-colors ${