fix(restart): skip dangling relations on memory index rebuild; prune on compaction

- Fix restart exit code 1 caused by missing relation targets after delete+rebuild
- memory_index_build: skip relations whose targets no longer exist
- store_rebuild / write_snapshot: prune dangling relations and sources
- Remove diagnostic fprintf from server.c and context.c
- Enable restart resume test in mcp_protocol_test.py
- Add scripts/benchmark_p1_cp.py and run 10k/50k import/export round-trip
- Mark P1-CP, P7-001, P7-CP complete in development-plan.md

1 files changed, 0 insertions, 4 deletions

diff --git a/src/mcp/server.c b/src/mcp/server.c
index 498e9f4..a0ff436 100644
--- a/src/mcp/server.c
+++ b/src/mcp/server.c
@@ -30,10 +30,6 @@ tiny_convmem_server_run(FILE *input, FILE *output, tiny_store_t *store)
       return 1;
     }
   status = mcpc_server_start(server);
-  if (status != MCPC_EC_0)
-    {
-      fprintf(stderr, "mcpc server stopped with status %d\n", (int)status);
-    }
   tiny_mcp_tools_context_deactivate(context);
   mcpc_server_close(server);
   tiny_mcp_tools_context_free(context);