feat(web/ui): unify session opening and add repo card in project list

- Add openSession utility with tab deduplication/focus
- Use openSession in navbar live sessions, use-instance-actions, and project tool links
- Pass onAddRepository to ProjectListItem and add dashed 'Add Repository' card
- Style add-repo card in projects.css

apps/web/src/components/app-shell.tsx

@@ -2,6 +2,7 @@ import { Link, NavLink, Outlet, useLocation } from "react-router-dom";
 
 import type { Session } from "../api/sessions";
 import { useTheme } from "../hooks/use-theme";
+import { openSession } from "../utils/open-session";
 import { useAuth } from "../state/auth";
 import { useSessions } from "../state/sessions";
 import { useMobileViewport } from "../hooks/use-mobile-viewport";
@@ -33,19 +34,6 @@ const NAV_ITEMS: {
 const SessionItem = ({ session }: { session: Session }) => {
 	const isRunning = session.status === "running";
 
-	// Determine the link target:
-	// - Web tools open their tunnel URL
-	// - Terminal tools open the terminal page
-	// - Everything else falls back to the project page
-	const hasTerminal = session.tool_type_interfaces.includes("terminal");
-	const hasWeb = session.tool_type_interfaces.includes("web");
-	const href =
-		session.url && hasWeb
-			? session.url
-			: hasTerminal
-				? `/instances/${session.id}/terminal`
-				: `/projects/${session.project_id}`;
-
 	const contextName = session.workspace_name || session.repository_name;
 	const tooltipParts = [
 		session.display_name,
@@ -56,10 +44,9 @@ const SessionItem = ({ session }: { session: Session }) => {
 	tooltipParts.push(`(${session.status})`);
 
 	return (
-		<a
-			href={href}
-			target={`session-${session.id}`}
-			rel="noreferrer"
+		<button
+			type="button"
+			onClick={() => openSession(session)}
 			className="nav-item session-item"
 			title={tooltipParts.join(" · ")}
 		>
@@ -76,7 +63,7 @@ const SessionItem = ({ session }: { session: Session }) => {
 					{session.tool_type_name} · {session.project_name}
 				</span>
 			</span>
-		</a>
+		</button>
 	);
 };
 

apps/web/src/components/features/project/ProjectListItem.tsx

@@ -5,6 +5,7 @@ import { Icon } from "../../icon";
 import type { Session } from "../../../api/sessions";
 import type { IconName } from "../../../utils/icons";
 import type { ProjectWithRepos, RepositorySummary } from "../../../types";
+import { openSession } from "../../../utils/open-session";
 
 interface ProjectListItemProps {
 	project: ProjectWithRepos;
@@ -13,6 +14,7 @@ interface ProjectListItemProps {
 	onDelete: () => void;
 	onConfirmDelete: () => void;
 	onCancelDelete: () => void;
+	onAddRepository?: () => void;
 	sessions: Session[];
 }
 
@@ -23,6 +25,7 @@ export const ProjectListItem = ({
 	onDelete,
 	onConfirmDelete,
 	onCancelDelete,
+	onAddRepository,
 	sessions,
 }: ProjectListItemProps) => {
 	return (
@@ -75,17 +78,23 @@ export const ProjectListItem = ({
 			</header>
 
 			<div className="project-repo-list">
-				{project.repositories.length === 0 ? (
-					<p className="muted">No repositories.</p>
-				) : (
-					project.repositories.map((repo) => (
-						<ProjectRepoItem
-							key={repo.id}
-							repo={repo}
-							project={project}
-							sessions={sessions}
-						/>
-					))
+				{project.repositories.map((repo) => (
+					<ProjectRepoItem
+						key={repo.id}
+						repo={repo}
+						project={project}
+						sessions={sessions}
+					/>
+				))}
+				{onAddRepository && (
+					<button
+						type="button"
+						className="project-repo-item project-add-repo-card"
+						onClick={onAddRepository}
+					>
+						<Icon name="add" size="md" />
+						<span className="project-repo-name">Add Repository</span>
+					</button>
 				)}
 			</div>
 		</article>
@@ -169,22 +178,10 @@ function ProjectRepoItem({
 }
 
 function SessionToolLink({ session }: { session: Session }) {
-	const hasTerminal = session.tool_type_interfaces.includes("terminal");
-	const hasWeb = session.tool_type_interfaces.includes("web");
-	const href =
-		session.url && hasWeb
-			? session.url
-			: hasTerminal
-				? `/instances/${session.id}/terminal`
-				: `/projects/${session.project_id}`;
-
-	const isExternal = href.startsWith("http");
-
 	return (
-		<a
-			href={href}
-			target={isExternal ? `session-${session.id}` : undefined}
-			rel={isExternal ? "noreferrer" : undefined}
+		<button
+			type="button"
+			onClick={() => openSession(session)}
 			className="workspace-tool-link"
 			title={`${session.display_name} (${session.status})`}
 		>
@@ -195,6 +192,6 @@ function SessionToolLink({ session }: { session: Session }) {
 			<span className="tool-name">
 				{session.display_name || session.tool_type_name}
 			</span>
-		</a>
+		</button>
 	);
 }

apps/web/src/hooks/use-instance-actions.ts

@@ -1,4 +1,4 @@
-import { useState, useCallback, useRef } from "react";
+import { useState, useCallback } from "react";
 import {
 	stopInstance,
 	deleteInstance,
@@ -8,6 +8,7 @@ import {
 } from "../api/sessions";
 import type { Session } from "../api/sessions";
 import { useSessions } from "../state/sessions";
+import { openSession } from "../utils/open-session";
 
 interface UseInstanceActionsOptions {
 	onRefresh: () => Promise<void>;
@@ -37,27 +38,9 @@ export function useInstanceActions(
 		null,
 	);
 	const [dirtyDeleteFiles, setDirtyDeleteFiles] = useState<string[]>([]);
-	const tabRefs = useRef<Map<string, Window | null>>(new Map());
 
 	const handleOpen = useCallback((session: Session) => {
-		const key = session.id;
-		const existing = tabRefs.current.get(key);
-		if (existing && !existing.closed) {
-			existing.focus();
-			return;
-		}
-
-		let url: string;
-		if (session.url) {
-			url = session.url;
-		} else if (session.tool_type_interfaces?.includes("terminal")) {
-			url = `/instances/${session.id}/terminal`;
-		} else {
-			url = `/projects/${session.project_id}`;
-		}
-
-		const w = window.open(url, `session-${session.id}`);
-		tabRefs.current.set(key, w);
+		openSession(session);
 	}, []);
 
 	const handleStart = useCallback(

apps/web/src/pages/ProjectsPage.tsx

@@ -252,6 +252,10 @@ export const ProjectsPage = () => {
 							onDelete={() => setDeleteConfirmId(project.id)}
 							onConfirmDelete={() => void handleDelete(project.id)}
 							onCancelDelete={() => setDeleteConfirmId(null)}
+							onAddRepository={() => {
+								setSelectedProject(project);
+								setMobileView("create-repo");
+							}}
 						/>
 					))}
 				</div>

apps/web/src/styles/pages/projects.css

@@ -177,8 +177,28 @@
 	color: var(--danger);
 }
 
-.project-add-repo {
-	display: none;
+.project-add-repo-card {
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	gap: var(--space-3);
+	background: transparent;
+	color: var(--muted);
+	border-style: dashed;
+	cursor: pointer;
+	min-height: 120px;
+}
+
+.project-add-repo-card:hover {
+	background: var(--bg);
+	color: var(--ink);
+	border-color: var(--brand);
+}
+
+.project-add-repo-card .project-repo-name {
+	font-weight: 500;
+	white-space: normal;
+	text-align: center;
 }
 
 @media (max-width: 767px) {

apps/web/src/utils/open-session.ts

@@ -0,0 +1,24 @@
+import type { Session } from "../api/sessions";
+
+const tabRefs = new Map<string, Window | null>();
+
+export function openSession(session: Session): void {
+	const key = session.id;
+	const existing = tabRefs.get(key);
+	if (existing && !existing.closed) {
+		existing.focus();
+		return;
+	}
+
+	let url: string;
+	if (session.url) {
+		url = session.url;
+	} else if (session.tool_type_interfaces?.includes("terminal")) {
+		url = `/instances/${session.id}/terminal`;
+	} else {
+		url = `/projects/${session.project_id}`;
+	}
+
+	const w = window.open(url, `session-${session.id}`);
+	tabRefs.set(key, w);
+}