docs(quick-2): complete quick task 2 - v1/v2 structure

- Summary: Archived Flask v1 to src_v1/, initialized v2 React from sample_interface
- Updated STATE.md with quick task 2 completion

.planning/STATE.md

@@ -4,7 +4,7 @@ milestone: v1.0
 milestone_name: milestone
 status: Phase 1 executed successfully
 stopped_at: Phase 3 context gathered
-last_updated: "2026-03-12T03:09:14.379Z"
+last_updated: "2026-03-12T12:30:00.000Z"
 last_activity: 2026-03-12 — Phase 1 complete
 progress:
   total_phases: 4
@@ -80,6 +80,7 @@ None yet.
 | # | Description | Date | Commit | Directory |
 |---|-------------|------|--------|-----------|
 | 1 | Add a logo to the app. Logo can be found in the logo folder | 2026-03-12 | d18ef95 | [1-add-a-logo-to-the-app-logo-can-be-found-](./quick/1-add-a-logo-to-the-app-logo-can-be-found-/) |
+| 2 | Store current Flask v1 interface as v1 and init v2 | 2026-03-12 | de6e642 | [2-store-this-current-interface-as-v1-and-w](./quick/2-store-this-current-interface-as-v1-and-w/) |
 
 ## Session Continuity
 
@@ -87,4 +88,4 @@ Last session: 2026-03-12T03:09:14.375Z
 Stopped at: Phase 3 context gathered
 Resume file: .planning/phases/03-network-transmission/03-CONTEXT.md
 
-Last activity: 2026-03-12 — Completed quick task 1: Add a logo to the app
+Last activity: 2026-03-12 — Completed quick task 2: Store v1 & init v2

.planning/quick/2-store-this-current-interface-as-v1-and-w/2-SUMMARY.md

@@ -0,0 +1,95 @@
+---
+phase: quick
+plan: 2
+subsystem: project-structure
+tags: [archive, migration, v1, v2]
+dependency_graph:
+  requires: []
+  provides:
+    - path: "src_v1/"
+      description: "Archived Flask v1 application"
+    - path: "v2/"
+      description: "New React v2 project from sample_interface"
+  affects: ["src/", "README.md"]
+tech_stack:
+  added: []
+  patterns: ["versioned-project-structure"]
+key_files:
+  created:
+    - "src_v1/app.py"
+    - "src_v1/templates/*.html"
+    - "src_v1/static/"
+    - "src_v1/data/"
+    - "src_v1/routes/"
+    - "src_v1/services/"
+    - "src_v1/requirements.txt"
+    - "v2/src/app/"
+    - "v2/guidelines/"
+    - "v2/package.json"
+    - "v2/vite.config.ts"
+  modified:
+    - "README.md"
+decisions: []
+metrics:
+  duration: "<1 minute"
+  completed: "2026-03-12"
+  tasks_completed: 3
+  files_copied: 86
+---
+
+# Quick Task 2 Summary: Store v1 Interface & Initialize v2
+
+## One-Liner
+Archived Flask v1 to src_v1/ and initialized React v2 project from sample_interface reference.
+
+## Completed Tasks
+
+| Task | Description | Commit |
+|------|-------------|--------|
+| 1 | Archive Flask v1 to src_v1/ | 65e8907 |
+| 2 | Initialize v2 from sample_interface | 6a74db1 |
+| 3 | Document v1/v2 in README | de6e642 |
+
+## Execution Summary
+
+### Task 1: Archive Flask v1 Interface
+- Created `src_v1/` directory structure
+- Copied complete Flask application:
+  - `app.py` - Main Flask application
+  - `templates/` - 4 HTML templates (dashboard, calibration, files, settings)
+  - `static/` - CSS, JS, images
+  - `data/` - CSV logger files
+  - `routes/` - Route handlers
+  - `services/` - Business logic
+  - `requirements.txt` - Python dependencies
+
+### Task 2: Initialize v2 Project
+- Created `v2/` directory with React application
+- Copied from `sample_interface/` reference:
+  - `src/app/` - Complete React app with components and views
+  - `src/styles/` - CSS (tailwind, theme, fonts)
+  - `package.json` - Node dependencies
+  - `vite.config.ts` - Vite configuration
+  - `postcss.config.mjs` - PostCSS config
+  - `guidelines/` - Design system documentation
+
+### Task 3: Documentation Updates
+- Updated README.md with:
+  - Version history table (v1: Flask, v2: React)
+  - Updated project structure showing v1/v2 split
+  - Tech Stack section for both versions
+  - Current version banner
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Verification
+
+- [x] src_v1/ contains complete Flask application with all subdirectories
+- [x] v2/ contains React application from sample_interface
+- [x] README documents the new v1/v2 structure
+
+## Self-Check: PASSED
+
+All files created and committed successfully.