diff --git a/apps/dashboard/src/components/compare/compare-form.tsx b/apps/dashboard/src/components/compare/compare-form.tsx
index fb09269..5b84891 100644
--- a/apps/dashboard/src/components/compare/compare-form.tsx
+++ b/apps/dashboard/src/components/compare/compare-form.tsx
@@ -66,6 +66,12 @@ export function CompareForm({
 					ref={titleRef}
 					value={title}
 					onChange={(e) => onTitleChange(e.target.value)}
+					onKeyDown={(event) => {
+						if ((event.metaKey || event.ctrlKey) && event.key === "Enter") {
+							event.preventDefault();
+							handleExecute();
+						}
+					}}
 					placeholder="Pull request title"
 					// biome-ignore lint/a11y/noAutofocus: intentional — this is a dedicated PR-creation page
 					autoFocus
@@ -80,6 +86,7 @@ export function CompareForm({
 					onChange={onBodyChange}
 					placeholder="Describe the changes…"
 					mentions={mentionConfig}
+					onModEnter={handleExecute}
 				/>
 			</div>
 
diff --git a/apps/dashboard/src/components/details/comment-reply-form.tsx b/apps/dashboard/src/components/details/comment-reply-form.tsx
index 4146ac7..fa9ef44 100644
--- a/apps/dashboard/src/components/details/comment-reply-form.tsx
+++ b/apps/dashboard/src/components/details/comment-reply-form.tsx
@@ -99,6 +99,10 @@ export function CommentReplyForm({
 				compact
 				media={mediaUpload}
 				onPaste={onMediaPaste}
+				onModEnter={() => {
+					if (!value.trim() || isSending || hasPendingUploads) return;
+					void handleSend();
+				}}
 			/>
 			<div
 				ref={commentActionsRef}
diff --git a/apps/dashboard/src/components/details/detail-activity.tsx b/apps/dashboard/src/components/details/detail-activity.tsx
index 9bf617d..0c1a268 100644
--- a/apps/dashboard/src/components/details/detail-activity.tsx
+++ b/apps/dashboard/src/components/details/detail-activity.tsx
@@ -256,6 +256,10 @@ export function DetailCommentBox({
 				compact
 				media={mediaUpload}
 				onPaste={onMediaPaste}
+				onModEnter={() => {
+					if (!value.trim() || isSending || hasPendingUploads) return;
+					void handleSend();
+				}}
 				mentions={{
 					candidates: mentionCandidates,
 					onActivate: () => setMentionActivated(true),
diff --git a/apps/dashboard/src/components/issues/new/new-issue-page.tsx b/apps/dashboard/src/components/issues/new/new-issue-page.tsx
index dfc3a56..9a8e5fa 100644
--- a/apps/dashboard/src/components/issues/new/new-issue-page.tsx
+++ b/apps/dashboard/src/components/issues/new/new-issue-page.tsx
@@ -209,6 +209,13 @@ function NewIssueForm({
 							id="issue-title"
 							value={title}
 							onChange={(e) => setTitle(e.target.value)}
+							onKeyDown={(e) => {
+								if ((e.metaKey || e.ctrlKey) && e.key === "Enter") {
+									e.preventDefault();
+									if (!canSubmit) return;
+									void handleSubmit();
+								}
+							}}
 							placeholder="Issue title"
 							className="flex h-9 w-full rounded-md border bg-surface-1 px-3 py-1 text-sm outline-none transition-[box-shadow,border-color] placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px]"
 						/>
@@ -224,6 +231,10 @@ function NewIssueForm({
 							onChange={setBody}
 							placeholder="Describe the issue..."
 							mentions={mentionConfig}
+							onModEnter={() => {
+								if (!canSubmit) return;
+								void handleSubmit();
+							}}
 						/>
 					</div>
 
diff --git a/apps/dashboard/src/components/pulls/detail/pull-body-section.tsx b/apps/dashboard/src/components/pulls/detail/pull-body-section.tsx
index 2e1862e..b87934f 100644
--- a/apps/dashboard/src/components/pulls/detail/pull-body-section.tsx
+++ b/apps/dashboard/src/components/pulls/detail/pull-body-section.tsx
@@ -89,6 +89,10 @@ export function PullBodySection({
 					value={draft}
 					onChange={setDraft}
 					placeholder="Write a description..."
+					onModEnter={() => {
+						if (isSaving) return;
+						void saveBody();
+					}}
 				/>
 				<div className="flex items-center justify-end gap-2 pt-2">
 					<button
diff --git a/apps/dashboard/src/components/pulls/detail/pull-detail-activity.tsx b/apps/dashboard/src/components/pulls/detail/pull-detail-activity.tsx
index e9e2642..4f80530 100644
--- a/apps/dashboard/src/components/pulls/detail/pull-detail-activity.tsx
+++ b/apps/dashboard/src/components/pulls/detail/pull-detail-activity.tsx
@@ -1522,6 +1522,13 @@ function MergeFooter({
 						id="merge-commit-title"
 						value={commitTitle}
 						onChange={(e) => setCommitTitle(e.target.value)}
+						onKeyDown={(event) => {
+							if ((event.metaKey || event.ctrlKey) && event.key === "Enter") {
+								event.preventDefault();
+								if (isDisabled || !commitTitle.trim()) return;
+								void handleMerge();
+							}
+						}}
 						className="flex h-9 w-full rounded-md border bg-transparent px-3 py-1 text-sm shadow-sm transition-colors placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
 					/>
 				</div>
@@ -1533,6 +1540,13 @@ function MergeFooter({
 						id="merge-commit-desc"
 						value={commitDescription}
 						onChange={(e) => setCommitDescription(e.target.value)}
+						onKeyDown={(event) => {
+							if ((event.metaKey || event.ctrlKey) && event.key === "Enter") {
+								event.preventDefault();
+								if (isDisabled || !commitTitle.trim()) return;
+								void handleMerge();
+							}
+						}}
 						placeholder="Add an optional extended description..."
 						rows={3}
 						className="flex w-full rounded-md border bg-transparent px-3 py-2 text-sm shadow-sm transition-colors placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring resize-none"
@@ -2974,6 +2988,10 @@ function ReviewCommentBlock({
 									onChange={setReplyBody}
 									placeholder="Write a reply..."
 									compact
+									onModEnter={() => {
+										if (!replyBody.trim() || isSending) return;
+										void handleReply();
+									}}
 								/>
 								<div className="flex items-center justify-end gap-2">
 									<button
diff --git a/apps/dashboard/src/components/pulls/review/review-file-diff-block.tsx b/apps/dashboard/src/components/pulls/review/review-file-diff-block.tsx
index 036e6e1..eae3ba7 100644
--- a/apps/dashboard/src/components/pulls/review/review-file-diff-block.tsx
+++ b/apps/dashboard/src/components/pulls/review/review-file-diff-block.tsx
@@ -486,6 +486,9 @@ function InlineCommentForm({
 				compact
 				mentions={mentionConfig}
 				textareaRef={textareaRef}
+				onModEnter={() => {
+					if (body.trim()) onSubmit(body.trim());
+				}}
 			/>
 			<div className="flex items-center justify-end gap-2">
 				<button
@@ -667,6 +670,10 @@ function ReviewCommentThread({
 							onChange={setReplyBody}
 							placeholder="Write a reply..."
 							compact
+							onModEnter={() => {
+								if (!replyBody.trim() || isSending) return;
+								void handleReply();
+							}}
 						/>
 						<div className="flex items-center justify-end gap-2">
 							<button
@@ -749,6 +756,11 @@ function PendingCommentBubble({
 					placeholder="Leave a comment..."
 					compact
 					mentions={mentionConfig}
+					onModEnter={() => {
+						if (!draft.trim()) return;
+						onEdit(comment, draft.trim());
+						setIsEditing(false);
+					}}
 				/>
 				<div className="flex items-center justify-end gap-2">
 					<button
diff --git a/apps/dashboard/src/components/pulls/review/review-submit-popover.tsx b/apps/dashboard/src/components/pulls/review/review-submit-popover.tsx
index 895aed1..deea51f 100644
--- a/apps/dashboard/src/components/pulls/review/review-submit-popover.tsx
+++ b/apps/dashboard/src/components/pulls/review/review-submit-popover.tsx
@@ -118,6 +118,13 @@ export function ReviewSubmitPopover({
 				<textarea
 					value={body}
 					onChange={(event) => setBody(event.target.value)}
+					onKeyDown={(event) => {
+						if ((event.metaKey || event.ctrlKey) && event.key === "Enter") {
+							event.preventDefault();
+							if (isSubmitting) return;
+							void handleSubmit();
+						}
+					}}
 					placeholder="Leave a comment"
 					className="min-h-[80px] w-full resize-y rounded-md border bg-background px-3 py-2 text-xs outline-none placeholder:text-muted-foreground focus:border-blue-500 focus:ring-1 focus:ring-blue-500"
 				/>
diff --git a/packages/ui/src/components/markdown-editor.tsx b/packages/ui/src/components/markdown-editor.tsx
index ada248e..34aa116 100644
--- a/packages/ui/src/components/markdown-editor.tsx
+++ b/packages/ui/src/components/markdown-editor.tsx
@@ -64,6 +64,7 @@ type MarkdownEditorProps = {
 	/** Compact mode for comment boxes — shorter height, no syntax highlight overlay */
 	compact?: boolean;
 	onKeyDown?: React.KeyboardEventHandler<HTMLTextAreaElement>;
+	onModEnter?: () => void;
 	onPaste?: React.ClipboardEventHandler<HTMLTextAreaElement>;
 	textareaRef?: React.RefObject<HTMLTextAreaElement | null>;
 	mentions?: MentionConfig;
@@ -281,6 +282,7 @@ export const MarkdownEditor = forwardRef<
 		placeholder = "Leave a comment...",
 		compact,
 		onKeyDown: externalOnKeyDown,
+		onModEnter,
 		onPaste,
 		textareaRef: externalRef,
 		mentions: mentionConfig,
@@ -363,6 +365,14 @@ export const MarkdownEditor = forwardRef<
 			if (handleMentionKeyDown(event)) return;
 
 			const mod = event.metaKey || event.ctrlKey;
+			if (mod && event.key === "Enter") {
+				if (onModEnter) {
+					event.preventDefault();
+					event.stopPropagation();
+					onModEnter();
+					return;
+				}
+			}
 			if (mod) {
 				const shortcuts: Record<string, () => void> = {
 					b: () => insertMarkdown("**", "**", "bold"),
@@ -388,7 +398,7 @@ export const MarkdownEditor = forwardRef<
 			}
 			externalOnKeyDown?.(event);
 		},
-		[handleMentionKeyDown, insertMarkdown, externalOnKeyDown],
+		[handleMentionKeyDown, insertMarkdown, externalOnKeyDown, onModEnter],
 	);
 
 	const handleChange = useCallback(