* fix(influxdb3): document exec-mem-pool-bytes usage for data persistence
Updates documentation to reflect that exec-mem-pool-bytes is used for both
query processing and parquet persistence operations, not just queries.
Based on source code analysis showing the memory pool is used by:
- Query executor for processing queries
- Persister for converting WAL data to Parquet format
Changes:
- Updated config description to include "data operations"
- Added memory usage info to durability docs for Parquet storage
- Added troubleshooting section for memory-related write performance
- Fixed capitalization of "object store" throughout
Addresses DAR #499
Source analysis: influxdb3/src/commands/serve.rs:772-798
Shows separate executors for queries and write path operations,
both using memory pools for data processing.
* fix(influxdb3): broken links to no-sync