feat: first cut on M0 - base structure of project

crates/bds-core/src/model/generation.rs

@@ -0,0 +1,38 @@
+use serde::{Deserialize, Serialize};
+
+/// Tracks content hashes of generated files to skip unchanged writes.
+/// Matches the `generated_file_hashes` table.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GeneratedFileHash {
+    pub project_id: String,
+    pub relative_path: String,
+    pub content_hash: String,
+    pub updated_at: i64,
+}
+
+/// Notification for CLI-to-app synchronization.
+/// Matches the `db_notifications` table.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DbNotification {
+    pub id: i64,
+    pub entity: String,
+    pub entity_id: String,
+    pub action: String,
+    pub from_cli: bool,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub seen_at: Option<i64>,
+    pub created_at: i64,
+}
+
+/// Publishing preferences stored in meta/publishing.json.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PublishingPreferences {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ssh_host: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ssh_user: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ssh_remote_path: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ssh_mode: Option<String>,
+}