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/pages/ConfigProfilesPage.tsx

@@ -6,7 +6,7 @@ import { ConfigProfileListSidebar } from "../components/features/config-profiles
 import { ConfigProfileEditorPanel } from "../components/features/config-profiles/ConfigProfileEditorPanel";
 import { ConfigProfilesMobileView } from "../components/features/config-profiles/ConfigProfilesMobileView";
 
-type MobileView = "list" | "detail" | "edit";
+type MobileView = "list" | "detail" | "edit" | "preview";
 
 export const ConfigProfilesPage = () => {
 	const isMobile = useMobileViewport();
@@ -100,11 +100,18 @@ export const ConfigProfilesPage = () => {
 		return (
 			<ConfigProfilesMobileView
 				profiles={profiles}
+				projects={projects}
+				toolTypes={toolTypes}
 				selectedProfile={selectedProfile}
 				mobileView={mobileView}
 				isCreating={isCreating}
 				formData={formData}
+				includedProfileIds={includedProfileIds}
+				availableProfiles={availableProfilesForInclude()}
+				previewData={previewData}
+				previewingId={previewingId}
 				saveStatus={saveStatus}
+				error={error}
 				onViewChange={setMobileView}
 				onSelect={handleSelectProfile}
 				onCreate={handleCreateNew}
@@ -112,6 +119,23 @@ export const ConfigProfilesPage = () => {
 				onFormChange={updateFormField}
 				onSubmit={handleSubmit}
 				getScopeLabel={getScopeLabel}
+				getIncludedProfile={getIncludedProfile}
+				onAddInclude={addInclude}
+				onRemoveInclude={removeInclude}
+				onAddEnvVar={addEnvVar}
+				onUpdateEnvVar={updateEnvVar}
+				onRemoveEnvVar={removeEnvVar}
+				onAddFile={addFile}
+				onUpdateFile={updateFile}
+				onRemoveFile={removeFile}
+				onAddMount={addMount}
+				onUpdateMount={updateMount}
+				onRemoveMount={removeMount}
+				onAddMountFile={addMountFile}
+				onUpdateMountFile={updateMountFile}
+				onRemoveMountFile={removeMountFile}
+				onPreview={handlePreview}
+				onClosePreview={() => setPreviewData(null)}
 			/>
 		);
 	}