feat(frontend): Add Templates page for managing contract templates

- Add NavStrip component for top navigation between pages
- Create Templates page with template card grid layout
- Create TemplateEditor component for editing phase deliverables
- Add navigation state management in stores
- Implement three built-in templates:
  - Simple: Plan phase (Plan deliverable), Execute phase (PR deliverable)
  - Specification: Research, Specify, Plan, Execute, Review phases with deliverables
  - Execute: Single execute phase with no deliverables
- Support for creating custom templates with configurable phases/deliverables
- Templates are persisted to localStorage
- Add comprehensive CSS styling matching existing design patterns

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

[WIP] Heartbeat checkpoint - 2026-01-24 16:13:00 UTC

[WIP] Heartbeat checkpoint - 2026-01-24 16:14:29 UTC

1 files changed, 9 insertions, 0 deletions

diff --git a/frontend/src/stores/index.ts b/frontend/src/stores/index.ts
index 58f461c..2fc356d 100644
--- a/frontend/src/stores/index.ts
+++ b/frontend/src/stores/index.ts
@@ -4,6 +4,10 @@ import { ChatMessage, Choice } from '../types'
 // Authentication state
 export const isLoggedInStore = atom<boolean>(false)
 
+// Navigation state
+export type NavPage = 'main' | 'templates'
+export const currentPageStore = atom<NavPage>('main')
+
 // VN Interface state
 export const isStandbyStore = atom<boolean>(false)
 export const currentTimeStore = atom<Date>(new Date())
@@ -91,4 +95,9 @@ export const setLoadingComplete = (complete: boolean) => {
   if (complete) {
     loadingStore.set(false)
   }
+}
+
+// Navigation actions
+export const navigateTo = (page: NavPage) => {
+  currentPageStore.set(page)
 }
\ No newline at end of file