add debug logging to compact and restore_from_log

Logs entry counts before/after compaction (memory vs conversation),
budget breakdown, and restore load counts. Helps diagnose context
utilization issues.

Co-Authored-By: Proof of Concept <poc@bcachefs.org>

src/agent/runner.rs

@@ -951,6 +951,11 @@ impl Agent {
                 eprintln!("warning: failed to reload identity: {:#}", e);
             }
         }
+
+        let before = self.context.entries.len();
+        let before_mem = self.context.entries.iter().filter(|e| e.is_memory()).count();
+        let before_conv = before - before_mem;
+
         // Dedup memory, trim to budget, reload journal
         let entries = self.context.entries.clone();
         self.context.entries = crate::thought::context::trim_entries(
@@ -958,6 +963,17 @@ impl Agent {
             &entries,
             &self.tokenizer,
         );
+
+        let after = self.context.entries.len();
+        let after_mem = self.context.entries.iter().filter(|e| e.is_memory()).count();
+        let after_conv = after - after_mem;
+
+        dbglog!("[compact] entries: {} → {} (mem: {} → {}, conv: {} → {})",
+            before, after, before_mem, after_mem, before_conv, after_conv);
+
+        let budget = self.budget();
+        dbglog!("[compact] budget: {}", budget.status_string());
+
         self.load_startup_journal();
         self.last_prompt_tokens = 0;
         self.publish_context_state();
@@ -977,9 +993,14 @@ impl Agent {
         };
 
         // Load extra — compact() will dedup, trim, reload identity + journal
-        self.context.entries = entries.into_iter()
+        let all: Vec<_> = entries.into_iter()
             .filter(|e| e.message().role != Role::System)
             .collect();
+        let mem_count = all.iter().filter(|e| e.is_memory()).count();
+        let conv_count = all.len() - mem_count;
+        dbglog!("[restore] loaded {} entries from log (mem: {}, conv: {})",
+            all.len(), mem_count, conv_count);
+        self.context.entries = all;
         self.compact();
         true
     }