feat: Implement v0.2.1 Vision Pipeline

- Added ROI, Downsampling, and Blob Detection to CvPipeline
- Added NVS Settings component for persistent config
- Added Host-Based Simulator (simulation/) for WSL testing
- Updated README with simulator details

Author: CahillMeyer

README.md

@@ -23,6 +23,7 @@ efficient frame handling, and low‑power vision processing.
 - C++ `CameraNode` component using the `esp32-camera` managed component
 - Real-time FPS measurement with `esp_timer`
 - Example: **basic_fps_logger** (`examples/basic_fps_logger/`)
+- Host-Based Vision Simulator (`simulation/`) for fast PC-based testing
 
 ### 🛠 In Progress
 - `cv_pipeline` stages (grayscale, threshold, ROI operations)

simulation/README.md

@@ -0,0 +1,39 @@
+cat <<EOF > simulation/README.md
+# Host-Based Vision Simulator
+
+This tool allows you to run and debug the **CvPipeline** logic on a PC (WSL/Linux) without needing physical ESP32 hardware.
+
+It "mocks" the ESP32-specific headers (camera, logging, timing) and feeds generated test patterns into the pipeline.
+
+## 🚀 Purpose
+- **Rapid Prototyping:** Test new algorithms (blob detection, thresholding) instantly.
+- **Logic Verification:** Validate ROI math and coordinate transformations.
+- **Performance Baseline:** Measure raw algorithmic overhead (ignoring hardware I/O).
+
+## 🛠 How to Build & Run
+
+### Prerequisites
+- CMake
+- G++ / GCC
+- Linux environment (or WSL)
+
+### Commands
+\`\`\`bash
+cd simulation
+cmake .
+make
+./vision_sim
+\`\`\`
+
+## 🧪 Current Tests
+The \`SimMain.cpp\` currently validates:
+1. **ROI Extraction:** Ensures objects outside the crop zone are ignored.
+2. **Downsampling:** Verifies 2x scaling logic (320x240 -> 80x60).
+3. **Blob Detection:** Tracking a moving white square across the frame.
+
+## 📂 Structure
+- \`SimMain.cpp\`: Entry point; generates fake frames and calls the pipeline.
+- \`include/\`: Mock headers (\`esp_camera.h\`, \`esp_log.h\`, etc.).
+- \`CMakeLists.txt\`: Standard desktop build configuration.
+
+EOF