feat: add hostd — desktop WiFi/BLE scanner with WiGLE CSV output

.githooks/pre-commit

@@ -57,9 +57,22 @@ with open('$f', 'w') as fh:
     fi
 fi
 
-# 5. Run unit tests (if cargo is available)
-if has_cmd cargo; then
-    cargo test --lib --no-default-features --quiet
-else
-    echo "WARN: cargo not found — skipping unit tests (run 'just setup-local')"
+# Detect staged source files for conditional test runs
+STAGED_HOSTD=$(git diff --cached --name-only --diff-filter=d | grep '^hostd/' || true)
+STAGED_LIB=$(git diff --cached --name-only --diff-filter=d | grep '^src/' || true)
+
+# 5. Run unit tests when library sources change (if cargo is available)
+if [ -n "$STAGED_LIB" ]; then
+    if has_cmd cargo; then
+        cargo test --lib --no-default-features --quiet
+    else
+        echo "WARN: cargo not found — skipping unit tests (run 'just setup-local')"
+    fi
+fi
+
+# 6. Run hostd tests (uses stable toolchain via hostd/rust-toolchain.toml)
+if [ -n "$STAGED_HOSTD" ] || [ -n "$STAGED_LIB" ]; then
+    if has_cmd cargo && [ -f hostd/Cargo.toml ]; then
+        (cd hostd && cargo test --quiet)
+    fi
 fi

.github/workflows/ci.yml

@@ -32,6 +32,9 @@ jobs:
       - run: cargo fmt --check
         env:
           RUSTUP_TOOLCHAIN: nightly
+      - run: cd hostd && cargo fmt --check
+        env:
+          RUSTUP_TOOLCHAIN: nightly
 
   schemas:
     runs-on: ubuntu-latest
@@ -75,6 +78,28 @@ jobs:
         run: cargo audit
         env:
           RUSTUP_TOOLCHAIN: nightly
+      - name: Audit hostd dependencies
+        run: cd hostd && cargo audit
+        env:
+          RUSTUP_TOOLCHAIN: nightly
+
+  hostd:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - uses: dtolnay/rust-toolchain@0f1b44df7e9cbb178d781a242338dfa5e243ad7f # stable
+        with:
+          components: clippy
+      - name: Install BLE dev dependencies
+        run: sudo apt-get update && sudo apt-get install -y libdbus-1-dev
+      - name: Check
+        run: cd hostd && cargo check
+      - name: Clippy
+        run: cd hostd && cargo clippy -- -D warnings
+      - name: Test
+        run: cd hostd && cargo test
 
   build:
     runs-on: ubuntu-latest

.gitignore

@@ -1,5 +1,7 @@
 /target
 /firmware-std/target
+/hostd/target
+/hostd/AirHound.app
 .embuild
 .claude/
 

Cargo.toml

@@ -43,6 +43,7 @@ esp32s3 = [
 # Board constants only (no firmware deps — usable by external crates)
 board-xiao = []
 board-m5stickc = []
+board-host = []
 
 # Board-level features (constants + firmware deps)
 xiao = ["board-xiao", "esp32s3"]