chore(repo): rename rust-port/wifi-densepose-rs → v2/ (flatten to one level) (#427)

The Rust port lived two directories deep (rust-port/wifi-densepose-rs/)
without any sibling under rust-port/ that warranted the extra level.
Move the whole workspace up to v2/ to match v1/ (Python) at the same
depth and shorten every cd / build command across the repo.

git mv preserves history for all tracked files. 60 files updated for
path references (CI workflows, ADRs, docs, scripts, READMEs, internal
.claude-flow state). Two manual fixes for relative-cd paths in
CLAUDE.md and ADR-043 that became wrong after the depth change
(cd ../.. → cd ..).

Validated:
- cargo check --workspace --no-default-features → clean (after target/
  nuke; the gitignored target/ was carried by the OS rename and had
  hard-coded old paths in build scripts)
- cargo test --workspace --no-default-features → 1,539 passed, 0 failed,
  8 ignored (same totals as pre-rename)
- ESP32-S3 on COM7 → still streaming live CSI (cb #40300, RSSI -64 dBm)

After-merge follow-up: contributors should `rm -rf v2/target` once and
let cargo regenerate from the new path.

.github/workflows/ci.yml

@@ -79,13 +79,13 @@ jobs:
         path: |
           ~/.cargo/registry
           ~/.cargo/git
-          rust-port/wifi-densepose-rs/target
-        key: ${{ runner.os }}-cargo-${{ hashFiles('rust-port/wifi-densepose-rs/Cargo.lock') }}
+          v2/target
+        key: ${{ runner.os }}-cargo-${{ hashFiles('v2/Cargo.lock') }}
         restore-keys: |
           ${{ runner.os }}-cargo-
 
     - name: Run Rust tests
-      working-directory: rust-port/wifi-densepose-rs
+      working-directory: v2
       run: cargo test --workspace --no-default-features
 
   # Unit and Integration Tests

.github/workflows/desktop-release.yml

@@ -40,18 +40,18 @@ jobs:
           targets: ${{ matrix.target }}
 
       - name: Install frontend dependencies
-        working-directory: rust-port/wifi-densepose-rs/crates/wifi-densepose-desktop/ui
+        working-directory: v2/crates/wifi-densepose-desktop/ui
         run: npm ci
 
       - name: Build frontend
-        working-directory: rust-port/wifi-densepose-rs/crates/wifi-densepose-desktop/ui
+        working-directory: v2/crates/wifi-densepose-desktop/ui
         run: npm run build
 
       - name: Install Tauri CLI
         run: cargo install tauri-cli --version "^2.0.0"
 
       - name: Build Tauri app
-        working-directory: rust-port/wifi-densepose-rs/crates/wifi-densepose-desktop
+        working-directory: v2/crates/wifi-densepose-desktop
         run: cargo tauri build --target ${{ matrix.target }}
         env:
           TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
@@ -68,14 +68,14 @@ jobs:
 
       - name: Package macOS app
         run: |
-          cd rust-port/wifi-densepose-rs/target/${{ matrix.target }}/release/bundle/macos
+          cd v2/target/${{ matrix.target }}/release/bundle/macos
           zip -r "RuView-Desktop-${{ github.event.inputs.version || '0.4.0' }}-macos-${{ steps.arch.outputs.arch }}.zip" "RuView Desktop.app"
 
       - name: Upload macOS artifact
         uses: actions/upload-artifact@v4
         with:
           name: ruview-macos-${{ steps.arch.outputs.arch }}
-          path: rust-port/wifi-densepose-rs/target/${{ matrix.target }}/release/bundle/macos/*.zip
+          path: v2/target/${{ matrix.target }}/release/bundle/macos/*.zip
 
   build-windows:
     name: Build Windows
@@ -93,18 +93,18 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
 
       - name: Install frontend dependencies
-        working-directory: rust-port/wifi-densepose-rs/crates/wifi-densepose-desktop/ui
+        working-directory: v2/crates/wifi-densepose-desktop/ui
         run: npm ci
 
       - name: Build frontend
-        working-directory: rust-port/wifi-densepose-rs/crates/wifi-densepose-desktop/ui
+        working-directory: v2/crates/wifi-densepose-desktop/ui
         run: npm run build
 
       - name: Install Tauri CLI
         run: cargo install tauri-cli --version "^2.0.0"
 
       - name: Build Tauri app
-        working-directory: rust-port/wifi-densepose-rs/crates/wifi-densepose-desktop
+        working-directory: v2/crates/wifi-densepose-desktop
         run: cargo tauri build
         env:
           TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
@@ -114,13 +114,13 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: ruview-windows-msi
-          path: rust-port/wifi-densepose-rs/target/release/bundle/msi/*.msi
+          path: v2/target/release/bundle/msi/*.msi
 
       - name: Upload Windows NSIS artifact
         uses: actions/upload-artifact@v4
         with:
           name: ruview-windows-nsis
-          path: rust-port/wifi-densepose-rs/target/release/bundle/nsis/*.exe
+          path: v2/target/release/bundle/nsis/*.exe
 
   create-release:
     name: Create Release