fix: resolve module imports and rerank test format

- Add ingest_worker and query_worker modules to main.rs
- Update rerank tests to use /v1/rerank endpoint with new response format
- All 253+ tests now passing

crates/mem-cli/src/main.rs

@@ -1,6 +1,8 @@
 mod lessons_cmd;
 mod http_server;
 mod endpoints;
+mod ingest_worker;
+mod query_worker;
 
 use clap::{Parser, Subcommand};
 use mem_chunk::token_counter::CharsOverFourCounter;