various: markdown improvements

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I81fda8247814da19eed1e76dbe97bd5b6a6a6964

crates/pinakes-core/src/storage/mod.rs

@@ -789,6 +789,45 @@ pub trait StorageBackend: Send + Sync + 'static {
 
     /// Count items in trash.
     async fn count_trash(&self) -> Result<u64>;
+
+    // ===== Markdown Links (Obsidian-style) =====
+
+    /// Save extracted markdown links for a media item.
+    /// This replaces any existing links for the source media.
+    async fn save_markdown_links(
+        &self,
+        media_id: MediaId,
+        links: &[crate::model::MarkdownLink],
+    ) -> Result<()>;
+
+    /// Get outgoing links from a media item.
+    async fn get_outgoing_links(&self, media_id: MediaId) -> Result<Vec<crate::model::MarkdownLink>>;
+
+    /// Get backlinks (incoming links) to a media item.
+    async fn get_backlinks(&self, media_id: MediaId) -> Result<Vec<crate::model::BacklinkInfo>>;
+
+    /// Clear all links for a media item.
+    async fn clear_links_for_media(&self, media_id: MediaId) -> Result<()>;
+
+    /// Get graph data for visualization.
+    ///
+    /// If `center_id` is provided, returns nodes within `depth` hops of that node.
+    /// If `center_id` is None, returns the entire graph (limited by internal max).
+    async fn get_graph_data(
+        &self,
+        center_id: Option<MediaId>,
+        depth: u32,
+    ) -> Result<crate::model::GraphData>;
+
+    /// Resolve unresolved links by matching target_path against media item paths.
+    /// Returns the number of links that were resolved.
+    async fn resolve_links(&self) -> Result<u64>;
+
+    /// Update the links_extracted_at timestamp for a media item.
+    async fn mark_links_extracted(&self, media_id: MediaId) -> Result<()>;
+
+    /// Get count of unresolved links (links where target_media_id is NULL).
+    async fn count_unresolved_links(&self) -> Result<u64>;
 }
 
 /// Comprehensive library statistics.