feat: mobile edit-as-default with sticky save/delete actions

- Update MobileEditView to render Save and optional Delete in a
  sticky bottom action bar; header now shows Cancel + title only.
- Make ConfigProfilesMobileView open edit view on profile tap.
- Make ToolWorkshopMobileView open edit view on tool type tap.
- Wire delete into MobileEditView for existing profiles and tool
  types.
- Stay on edit view after saving an existing item; create flow
  returns to list as before.
- Update ToolWorkshopPage cancel to return to list.
- Add mobile-edit-actions and mobile-edit-delete CSS.

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

Refs: openspec/changes/mobile-edit-default-bottom-actions

apps/web/src/components/features/.pi-map.md

@@ -4,10 +4,10 @@ dir: apps/web/src/components/features
 index: apps/web/src/components/features/.pi-map.index.md
 
 ## role
-Reusable UI feature components for the web application that compose domain-specific user interface elements.
+Contains reusable React components that implement specific user-facing features and functionality within the web application.
 ## files
 ## arch
-Modular feature-based component organization with domain-specific grouping, likely following atomic design or container/presentational patterns with shared component composition.
+Feature-based component organization following domain-driven design principles, likely with each sub-directory representing a distinct business capability or user workflow.
 ## tags
 -
 ## symbols