feat: redesign mobile Config Profiles detail, preview, and edit pages

- Rewrite ConfigProfilesMobileView to match desktop functionality:
  full detail view with all fields, preview action showing resolved
  profile, and edit view with project/tool selects, includes,
  environment variables, runtime hints, files, mounts with nested
  files, and git mounts.
- Update useConfigProfiles.handleSubmit to return boolean success.
- Update ConfigProfilesPage to pass required state and callbacks.
- Add mobile-specific CSS for config profile forms, includes,
  mount/file cards, and preview panels.
- Allow MobileDetailView to render extra children.

Quality gates: npm run typecheck, npm run lint, npm test -- --run (87 passed)

Refs: openspec/changes/mobile-config-profiles-ui

apps/web/src/hooks/.pi-map.index.md

@@ -2,7 +2,7 @@
 dir: apps/web/src/hooks
 
 ## role
-Provides a collection of reusable React custom hooks that encapsulate domain-specific business logic, API interactions, and UI state management for the web application.
+Provides reusable React custom hooks that encapsulate stateful logic, side effects, and API interactions for the web application's UI components, covering data fetching, terminal management, workspace operations, notifications, and mobile-specific behaviors.
 ## parent
 index: apps/web/src/.pi-map.index.md
 map: apps/web/src/.pi-map.md

apps/web/src/hooks/.pi-map.md

@@ -4,11 +4,11 @@ dir: apps/web/src/hooks
 index: apps/web/src/hooks/.pi-map.index.md
 
 ## role
-Provides a collection of reusable React custom hooks that encapsulate domain-specific business logic, API interactions, and UI state management for the web application.
+Provides reusable React custom hooks that encapsulate stateful logic, side effects, and API interactions for the web application's UI components, covering data fetching, terminal management, workspace operations, notifications, and mobile-specific behaviors.
 ## files
 - use-async-data.ts | A custom React hook that manages asynchronous data fetching with loading, error, and ready states, plus a manual reload capability. | exp: func:useAsyncData(fetcher: () => Promise<T>, deps: React.DependencyList) → UseAsyncDataResult<T>, call:useState, call:useCallback, call:setStatus, call:setError, call:fetcher, call:setData, call:load, call:useEffect | dep: react
 - use-auto-hide.ts | A React custom hook that automatically hides an element after a specified timeout and provides manual controls for showing, hiding, and toggling visibility. | exp: func:useAutoHide(options: AutoHideOptions), call:useState, call:useRef, call:Date.now, call:useCallback, call:setIsVisible, call:clearTimeout, call:setTimeout, call:hide, call:show, call:useEffect | dep: react
-- use-config-profiles.ts | A React custom hook that manages config profile CRUD operations, form state, profile inclusion with cycle detection, and drag-and-drop reordering. | exp: useConfigProfiles | dep: react, ../utils/errors, ../api/config-profiles, ../api/projects, ../api/tool-types, ../types
+- use-config-profiles.ts | A React custom hook that manages CRUD operations, form state, drag-and-drop ordering, and cyclic dependency prevention for configuration profiles. | exp: useConfigProfiles | dep: react, ../utils/errors, ../api/config-profiles, ../api/projects, ../api/tool-types, ../types
 - use-events.test.ts | Tests a React hook that manages Server-Sent Events (SSE) connections with automatic reconnection, backoff, and error handling | dep: vitest, @testing-library/react, ./use-events, ../api/events, use-events hook
 - use-events.ts | React hook that manages a Server-Sent Events connection with automatic exponential backoff reconnection, lifecycle event handling, and authentication redirect on 401 errors. | exp: UseEventsReturn, func:useEvents() → UseEventsReturn, call:useState, call:useRef, call:useCallback, call:clearTimeout, call:createEventSource, call:setConnected, call:setError, call:setReconnectCount, call:JSON.parse, call:setEvents, call:es.addEventListener, call:es.close, call:Math.min, call:Math.pow, call:Math.random, call:setTimeout, call:probeEventStreamStatus, call:window.location.assign, call:connect, call:useEffect, call:esRef.current.close | dep: react, ../api/events, ../types/events
 - use-git-repo.ts | A custom React hook that centralizes all git repository operations (branch management, status tracking, commit history, and git actions) into a reusable interface for components. | exp: GitStatus, UseGitRepoResult, func:useGitRepo(projectId: string | undefined, repoId: string | undefined) → UseGitRepoResult, call:useState, call:useCallback, call:setLoading, call:setError, call:fn, call:extractError, call:withLoading, call:listRepositoryBranches, call:setBranches, call:data.branches.map, call:setDefaultBranch, call:getRepositoryStatus, call:setStatus, call:getRepositoryHistory, call:setHistory, call:getCommitDetail, call:setCommitDetail, call:commitChanges, call:refreshStatus, call:pushRepository, call:pullRepository, call:fetchRepository, call:checkoutBranch, call:refreshBranches, call:createBranch, call:deleteBranch, call:mergeBranches, call:refreshHistory, call:useEffect, raise:err | dep: react, ../api/git-repositories
@@ -31,7 +31,7 @@ Provides a collection of reusable React custom hooks that encapsulate domain-spe
 - use-workspace-instances.ts | Custom React hook for managing workspace instances with CRUD operations, loading states, and error handling. | exp: UseWorkspaceInstancesResult, func:useWorkspaceInstances(workspaceId: string) → UseWorkspaceInstancesResult, call:useState, call:useCallback, call:setLoading, call:setError, call:listWorkspaceInstances, call:setInstances, call:createWorkspaceInstance, call:refresh, call:useEffect | dep: react, ../api/workspace-instances, ../api/sessions
 - use-workspaces.ts | Custom React hook that fetches and manages workspace data with loading and error states. | exp: UseWorkspacesResult, func:useWorkspaces(projectId: string, repoId: string) → UseWorkspacesResult, call:useState, call:useCallback, call:setLoading, call:setError, call:listWorkspaces, call:listAllWorkspaces, call:setWorkspaces, call:useEffect, call:refresh | dep: react, ../api/workspaces, ../types/workspace
 ## arch
-Follows a feature-based composition pattern where each hook is a self-contained unit managing specific concerns (data fetching, CRUD operations, lifecycle management, UI behaviors) using React primitives (useState, useEffect, useCallback) with consistent patterns for loading/error states, optimistic updates, and cleanup; hooks are granular and single-responsibility, often wrapping TanStack Query or direct API calls, with some hooks providing imperative controls and others integrating with browser APIs (SSE, viewport, keyboard, theme).
+Follows a custom hook composition pattern where each hook encapsulates a single domain concern (data fetching, CRUD operations, UI state, device detection), often combining useState/useEffect/useCallback with SWR-style async data management, and layering higher-level hooks (use-terminal-page) from lower-level ones (use-mobile-viewport, use-virtual-keyboard).
 ## tags
 call:set, call:use, workspace, react, state, terminal, api, callback
 ## symbols

apps/web/src/hooks/use-config-profiles.ts

@@ -193,7 +193,7 @@ export const useConfigProfiles = () => {
 		setDragOverIndex(null);
 	};
 
-	const handleSubmit = async (e?: React.FormEvent) => {
+	const handleSubmit = async (e?: React.FormEvent): Promise<boolean> => {
 		e?.preventDefault();
 		setError(null);
 		setSaveStatus("saving");
@@ -201,7 +201,7 @@ export const useConfigProfiles = () => {
 		if (!formData.name?.trim()) {
 			setError("Name is required");
 			setSaveStatus("error");
-			return;
+			return false;
 		}
 
 		try {
@@ -224,9 +224,11 @@ export const useConfigProfiles = () => {
 				const refreshed = (await listConfigProfiles()).find((p) => p.id === selectedProfile.id);
 				if (refreshed) populateForm(refreshed);
 			}
+			return true;
 		} catch (err) {
 			setError(extractErrorMessage(err));
 			setSaveStatus("error");
+			return false;
 		}
 	};