Method resolve_view_chain

atomic-core/src/pristine/traits/view.rs:375–398

Resolve the view chain for a draft view. Walks the `parent` links from the given view upward, collecting the IDs of each **Draft** ancestor. Stops when a **Shared ancestor (or the root) is reached. # Example ```ignore // feature-login (Draft, parent=service-auth) // service-auth (Draft, parent=dev) // dev (Shared, parent=main) let chain = txn.resolve_view_chain(&feature_login)?; //

(&self, view: &ViewState)

    /// // GRAPH is the implicit base (dev is Shared → stop)
    /// ```
    fn resolve_view_chain(&self, view: &ViewState) -> Result<Vec<u64>, PristineError> {
        let mut chain: Vec<u64> = Vec::new();

        if view.kind.is_shared() {
            // Shared views read directly from GRAPH, no chain needed
            return Ok(chain);
        }

        chain.push(view.id);

        let mut cursor = view.parent;
        while let Some(parent_id) = cursor {
            let parent = self.get_view_by_id(parent_id)?;
            match parent {
                Some(p) if p.kind.is_draft() => {
                    chain.push(p.id);
                    cursor = p.parent;
                }
                _ => break, // Shared ancestor or not found → GRAPH is the base
            }
        }

        Ok(chain)
    }

    /// Find all views that have the given view as their parent.
    ///