feat(tokens): STYLE-001 MVP complete - 10 default tokens system

- Implemented StyleTokensModel for managing design tokens
- Added StyleTokensInjector to inject tokens into viewer preview
- 10 essential default tokens (primary, background, foreground, border, spacing, radius, shadows)
- Token storage in project metadata (styleTokens field)
- Real-time CSS variable injection in preview
- Fixed bug: tokens now inject for legacy projects without styleTokens field
- Tested and validated (see TEST-REPORT.md)

MVP does NOT include:
- UI panel for editing tokens
- Token picker component
- Import/export functionality
- Full token set (only 10 essentials)

These features are planned for STYLE-001 Full implementation.

dev-docs/tasks/phase-9-styles-overhaul/PROGRESS.md

@@ -1,22 +1,22 @@
 # Phase 9: Styles Overhaul - Progress Tracker
 
-**Last Updated:** 2026-01-07  
+**Last Updated:** 2026-01-12  
 **Overall Status:** 🟡 In Progress
 
 ---
 
 ## Quick Summary
 
-| Metric            | Value       |
-| ----------------- | ----------- |
-| Total Major Tasks | 7           |
-| Completed         | 0           |
-| In Progress       | 1 (CLEANUP) |
-| Not Started       | 6           |
-| **Progress**      | **~15%**    |
+| Metric            | Value             |
+| ----------------- | ----------------- |
+| Total Major Tasks | 7                 |
+| Completed         | 1 (STYLE-001 MVP) |
+| In Progress       | 1 (CLEANUP)       |
+| Not Started       | 5                 |
+| **Progress**      | **~25%**          |
 
 > **Note:** Significant foundational work completed in CLEANUP-SUBTASKS (000A-000G).
-> Major feature tasks (STYLE-001 to STYLE-005, WIZARD-001) remain not started.
+> **STYLE-001 MVP** completed and tested (Jan 12, 2026). Full STYLE-001 implementation pending.
 
 ---
 
@@ -24,15 +24,23 @@
 
 ### Major Feature Tasks
 
-| Task       | Name                     | Status         | Notes                         |
-| ---------- | ------------------------ | -------------- | ----------------------------- |
-| STYLE-001  | Token System Enhancement | 🔴 Not Started | Design tokens system          |
-| STYLE-002  | Element Configs/Variants | 🔴 Not Started | Component styling system      |
-| STYLE-003  | Style Presets System     | 🔴 Not Started | Pre-built style presets       |
-| STYLE-004  | Property Panel UX        | 🔴 Not Started | Improved styling UX           |
-| STYLE-005  | Smart Style Suggestions  | 🔴 Not Started | AI-assisted suggestions       |
-| WIZARD-001 | Project Creation Wizard  | 🔴 Not Started | Guided project setup          |
-| CLEANUP-\* | Legacy Color Cleanup     | 🟡 In Progress | 7/8 subtasks complete (87.5%) |
+| Task       | Name                     | Status          | Notes                                 |
+| ---------- | ------------------------ | --------------- | ------------------------------------- |
+| STYLE-001  | Token System Enhancement | 🟢 MVP Complete | MVP tested & validated (Jan 12, 2026) |
+| STYLE-002  | Element Configs/Variants | 🔴 Not Started  | Component styling system              |
+| STYLE-003  | Style Presets System     | 🔴 Not Started  | Pre-built style presets               |
+| STYLE-004  | Property Panel UX        | 🔴 Not Started  | Improved styling UX                   |
+| STYLE-005  | Smart Style Suggestions  | 🔴 Not Started  | AI-assisted suggestions               |
+| WIZARD-001 | Project Creation Wizard  | 🔴 Not Started  | Guided project setup                  |
+| CLEANUP-\* | Legacy Color Cleanup     | 🟡 In Progress  | 7/8 subtasks complete (87.5%)         |
+
+#### STYLE-001 Details
+
+- **MVP Status:** ✅ Complete & Tested
+- **MVP Completion Date:** 2026-01-12
+- **What's Included:** 10 default tokens, storage system, CSS injection, real-time updates
+- **What's Pending:** UI panel, token picker, import/export, full token set
+- **Documentation:** See `STYLE-001-token-system-enhancement/` folder
 
 ---
 
@@ -77,10 +85,11 @@ Foundation work to remove hardcoded colors and establish token infrastructure.
 
 | Date       | Update                                                         |
 | ---------- | -------------------------------------------------------------- |
+| 2026-01-12 | ✅ STYLE-001 MVP completed, tested, and validated              |
+| 2026-01-12 | 🐛 Fixed critical bug: tokens now inject for legacy projects   |
 | 2026-01-07 | Audit: Updated PROGRESS.md to reflect actual completion status |
 | 2025-12-31 | Completed TASK-000F (Buttons) and TASK-000G (Dialogs/Panels)   |
 | 2025-12-30 | Completed TASK-000A through TASK-000E (Token/Color foundation) |
-| 2026-01-07 | Merged Phase 8 + Phase 3 TASK-000 into new Phase 9             |
 
 ---