Native plomid CLI

Build: cargo build -p plomid-cli → ./target/debug/plomid. Shared connection flags on most commands: --host/--port/--user/--password/--database/--data-dir (env PLOMID_*, defaults 127.0.0.1/5432/plomid/secret/plomid/./data).

flowchart TB
    CLI["plomid"] --> S["server\nstart | stop | status"]
    CLI --> D["db\nreadiness | health | info | diagnostics"]
    CLI --> B["benchmark run"]
    CLI --> T["test list | run"]
    CLI --> O["config | version | logs | trace | metrics"]

flowchart TB
    CLI["plomid"] --> S["server\nstart | stop | status"]
    CLI --> D["db\nreadiness | health | info | diagnostics"]
    CLI --> B["benchmark run"]
    CLI --> T["test list | run"]
    CLI --> O["config | version | logs | trace | metrics"]

./target/debug/plomid db readiness --port 5432 --json
./target/debug/plomid db health --port 5432
./target/debug/plomid db info --data-dir ./data
./target/debug/plomid db diagnostics --port 5432
./target/debug/plomid benchmark run --iterations 100 --port 5432
./target/debug/plomid server status --port 5432
./target/debug/plomid test list
./target/debug/plomid config --json
./target/debug/plomid version

• server start: creates data dir, refuses if plomid.pid exists, finds sibling plomid-server, spawns with env, writes pid. server stop: kill -TERM (Unix only). server status: 2 s TCP probe.
• db readiness: TCP → startup (user/database/application_name=plomid-cli) → SELECT 1 must return 1. Checks: Server/Network/Authentication/Database/Simple query/Read PASS-FAIL; Write + Transaction NOT SUPPORTED (non-destructive by design); Persistence WARNING. Exit 1 when not ready.
• db health: readiness + database_bytes. db info: local only (database/WAL bytes, catalog tables or unavailable). db diagnostics: readiness + data-dir configuration check + recommendations.
• benchmark run --operation select --iterations 100 --concurrency 1: loops SELECT 1; reports avg/p50/p95/p99/throughput; persists <data_dir>/benchmarks/<run-id>.json. Concurrency ≠ 1 errors; current operation is SELECT 1 only.
• test list|run: connectivity|read delegate to readiness; write/persistence/recovery/performance report isolated-mode requirement.
• logs|trace|metrics: logging hints, traceability fields, probe-latency metrics (server counters unavailable).

CLI WireClient speaks simple Q only (no extended/SCRAM/MD5). Precise flags: CLI reference.