Included pin subcommand with auditing and assignment

src/project/config.rs

@@ -15,6 +15,8 @@ pub struct ProjectConfig {
     pub monitor: MonitorConfig,
     #[serde(default)]
     pub boards: HashMap<String, BoardProfile>,
+    #[serde(default, skip_serializing_if = "HashMap::is_empty")]
+    pub pins: HashMap<String, BoardPinConfig>,
 }
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
@@ -51,6 +53,32 @@ pub struct BoardProfile {
     pub baud: Option<u32>,
 }
 
+/// Pin configuration for a specific board.
+#[derive(Debug, Serialize, Deserialize, Clone, Default)]
+pub struct BoardPinConfig {
+    /// Individual pin assignments: name -> { pin, mode }
+    #[serde(default, skip_serializing_if = "HashMap::is_empty")]
+    pub assignments: HashMap<String, PinAssignment>,
+    /// Bus group reservations: "spi" -> { cs = 10 }, "i2c" -> {}
+    #[serde(default, skip_serializing_if = "HashMap::is_empty")]
+    pub buses: HashMap<String, BusConfig>,
+}
+
+/// A single pin assignment with a friendly name.
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct PinAssignment {
+    pub pin: u8,
+    pub mode: String,
+}
+
+/// Configuration for a claimed bus group.
+/// User-selectable pins (like CS for SPI) are stored as flattened keys.
+#[derive(Debug, Serialize, Deserialize, Clone, Default)]
+pub struct BusConfig {
+    #[serde(flatten)]
+    pub user_pins: HashMap<String, u8>,
+}
+
 impl ProjectConfig {
     /// Create a new project config with sensible defaults.
     pub fn new(name: &str) -> Self {
@@ -76,6 +104,7 @@ impl ProjectConfig {
                 port: None,
             },
             boards,
+            pins: HashMap::new(),
         }
     }