fix: merge develop -> main (warning-free chronomemory)

Author: tbitcs

crates/chronomemory/src/context_pack.rs

@@ -30,7 +30,7 @@ fn estimate_tokens(record: &Record) -> u64 {
 pub fn compile(
     request: &ContextPackRequest,
     store: &Store,
-    dep_graph: &DepGraph,
+    _dep_graph: &DepGraph,
 ) -> ContextPackOutput {
     let mut entries: Vec<PackEntry> = Vec::new();
     let mut total_tokens: u64 = 0;

crates/chronomemory/src/query.rs

@@ -62,7 +62,7 @@ pub fn has_this_work_been_done(store: &Store, label: &str) -> bool {
 }
 
 /// Query: what changed since a given epoch?
-pub fn what_changed_since<'a>(store: &'a Store, epoch: u64) -> Vec<&'a Record> {
+pub fn what_changed_since<'a>(store: &'a Store, _epoch: u64) -> Vec<&'a Record> {
     // Since we don't store epoch per record, approximate by checking
     // all records with modified_at after a threshold. For now return
     // all active records (the real implementation would track per-record epoch).