fix(multi-cli): complete solution details display in summary tab (#98)

Fixed issue where multi-CLI planning solution cards only showed count,
feasibility, effort, and risk badges but had empty content area.

Changes:
- Enhanced renderMultiCliSummaryContent() to extract and display all solution fields
  - Solution name (name/title)
  - Feasibility score (feasibility)
  - Effort level (effort)
  - Risk level (risk)
  - Summary/description (summary)
  - Pros list (pros)
  - Cons list (cons)

- Added CSS styles for solution cards
  - .solution-details, .details-label, .details-list
  - .solution-header, .solution-title-row, .solution-badges
  - .badge with variants for feasibility/effort/risk

- Fixed related issues:
  - Added multiCliPlan support to backend data structures
  - Exposed liteTaskDataStore to window for global access
  - Fixed header left-alignment in detail pages
  - Added 'active' class to tab content for visibility

Files modified:
- ccw/src/templates/dashboard-js/views/lite-tasks.js
- ccw/src/templates/dashboard-css/04-lite-tasks.css
- ccw/src/core/server.ts
- ccw/src/core/routes/system-routes.ts
- ccw/src/templates/dashboard-js/state.js
- ccw/src/templates/dashboard-css/02-session.css
- ccw/src/config/litellm-api-config-manager.ts (fix homedir import)

Closes #98

ccw/src/templates/dashboard-css/02-session.css

@@ -464,6 +464,7 @@
   display: flex;
   flex-direction: column;
   gap: 1rem;
+  align-items: flex-start;
 }
 
 .btn-back {
@@ -492,6 +493,7 @@
 .detail-title-row {
   display: flex;
   align-items: center;
+  justify-content: flex-start;
   gap: 1rem;
   flex-wrap: wrap;
 }