Add conflict notification and file update WS endpoint

1 files changed, 7 insertions, 0 deletions

diff --git a/makima/src/db/models.rs b/makima/src/db/models.rs
index 135ae75..8204b86 100644
--- a/makima/src/db/models.rs
+++ b/makima/src/db/models.rs
@@ -68,6 +68,8 @@ pub struct File {
     /// Structured body content (headings, paragraphs, charts)
     #[sqlx(json)]
     pub body: Vec<BodyElement>,
+    /// Version number for optimistic locking
+    pub version: i32,
     pub created_at: DateTime<Utc>,
     pub updated_at: DateTime<Utc>,
 }
@@ -100,6 +102,8 @@ pub struct UpdateFileRequest {
     pub summary: Option<String>,
     /// Structured body content (optional)
     pub body: Option<Vec<BodyElement>>,
+    /// Version for optimistic locking (required for updates from frontend)
+    pub version: Option<i32>,
 }
 
 /// Response for file list endpoint.
@@ -120,6 +124,8 @@ pub struct FileSummary {
     pub transcript_count: usize,
     /// Duration derived from last transcript end time
     pub duration: Option<f32>,
+    /// Version number for optimistic locking
+    pub version: i32,
     pub created_at: DateTime<Utc>,
     pub updated_at: DateTime<Utc>,
 }
@@ -137,6 +143,7 @@ impl From<File> for FileSummary {
             description: file.description,
             transcript_count: file.transcript.len(),
             duration: if duration > 0.0 { Some(duration) } else { None },
+            version: file.version,
             created_at: file.created_at,
             updated_at: file.updated_at,
         }