fix: read_all_items must use deduplicated index, not raw CRDT entries

read_all_items was iterating all CRDT entries including stale duplicates
from earlier stage writes. A story written multiple times (backlog →
current → done) would appear in the output multiple times with different
stages, causing ghost entries in the pipeline status and backlog views.

Now iterates only the index (story_id → visible_index map) which
represents the latest-wins deduplicated view of each story.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/src/main.rs

@@ -337,11 +337,6 @@ async fn main() -> Result<(), std::io::Error> {
         }
     }
 
-    // Log the node's public key so operators can add it to trusted_keys.
-    if let Some(node_id) = crdt_state::our_node_id() {
-        slog!("[crdt] Node public key: {node_id}");
-    }
-
     // (CRDT state layer is initialised above alongside the legacy pipeline.db.)
 
     // Start the CRDT sync rendezvous client if configured in project.toml.