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

openspec/changes/mobile-config-profiles-ui/change.md

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+# Mobile Config Profiles UI Rework
+
+## Goal
+
+Redesign the mobile **Config Profiles** detail ("preview") and edit pages to match the full desktop functionality, following the same mobile UX pattern used for the Tool Workshop.
+
+## Scope
+
+- Rewrite `ConfigProfilesMobileView` so the detail view displays all profile fields and supports resolving/previewing the profile.
+- Rewrite the mobile edit view to expose every field available on the desktop editor:
+  - name, description, project, tool type, default flag
+  - includes with add/remove/reorder
+  - environment variables
+  - runtime hints
+  - files
+  - mounts with nested files
+  - git mounts
+- Update `ConfigProfilesPage` to pass the required state and callbacks.
+- Update `useConfigProfiles` so `handleSubmit` returns success status for cleaner mobile navigation.
+- Add mobile-specific CSS for config profile forms.
+
+## Acceptance Criteria
+
+- On viewports narrower than 768 px, the Config Profiles page renders a mobile-friendly list/detail/edit flow.
+- The mobile detail view shows all profile fields and offers a Preview action that displays the resolved profile.
+- The mobile edit view supports all desktop fields, including includes, runtime hints, files, mounts, nested mount files, and git mounts.
+- All existing desktop functionality remains intact.
+- `npm run typecheck` and `npm run lint` pass in `apps/web`.
+
+## Out of Scope
+
+- Backend API changes.
+- Changes to other pages.
+- New features beyond existing desktop capabilities.

openspec/changes/mobile-config-profiles-ui/tasks.md

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+# Tasks: Mobile Config Profiles UI Rework
+
+- [x] Inspect existing ConfigProfilesMobileView, desktop editor, hook, and page.
+- [x] Update `useConfigProfiles.handleSubmit` to return boolean success.
+- [x] Rewrite `ConfigProfilesMobileView` detail view with full field display and preview action.
+- [x] Rewrite `ConfigProfilesMobileView` edit view with all desktop fields (includes, env vars, runtime hints, files, mounts, git mounts).
+- [x] Update `ConfigProfilesPage` to pass required props to mobile view.
+- [x] Add responsive CSS for config profile mobile forms.
+- [x] Run `npm run typecheck` and `npm run lint` in `apps/web` and fix issues.
+- [x] Update project maps for changed files.