Add gazetteer to analyze worker

Pass a `Gazetteer` to the analyze worker to enable proper-name
correction. The gazetteer is loaded from disk at application startup. If
the directory is missing or unreadable, the worker will start without
proper-name correction capabilities.

server/src/main.rs

@@ -10,6 +10,7 @@ use tracing_subscriber::EnvFilter;
 
 use doctate_server::analyze;
 use doctate_server::config::Config;
+use doctate_server::gazetteer::Gazetteer;
 use doctate_server::transcribe;
 use doctate_server::AppState;
 
@@ -64,6 +65,27 @@ async fn main() {
         .build()
         .expect("reqwest client build failed");
 
+    // Gazetteer for pre-LLM proper-name correction. Missing / unreadable
+    // vocab directory is non-fatal — analysis falls back to plain prompts.
+    let vocab = Arc::new(match Gazetteer::load_dir(&config.vocab_dir).await {
+        Ok(g) => {
+            info!(
+                dir = %config.vocab_dir.display(),
+                entries = g.len(),
+                "Gazetteer loaded"
+            );
+            g
+        }
+        Err(e) => {
+            warn!(
+                dir = %config.vocab_dir.display(),
+                error = %e,
+                "Gazetteer not available; running without proper-name correction"
+            );
+            Gazetteer::empty()
+        }
+    });
+
     // Transcription pipeline: channel + worker + recovery scan.
     let (transcribe_tx, transcribe_rx) = transcribe::channel();
     let transcribe_busy: doctate_server::WorkerBusy =
@@ -96,6 +118,7 @@ async fn main() {
         config.clone(),
         http_client.clone(),
         analyze_busy.clone(),
+        vocab.clone(),
     ));
     {
         let tx = analyze_tx.clone();