Red commit: 929da3c6dcc1b619c27478291125d1c91323db8f — CI:
https://github.com/Kpa-clawbot/CoreScope/commit/929da3c6dcc1b619c27478291125d1c91323db8f/checksFixes#1010.
## What
Adds `GOMEMLIMIT` support to both `cmd/server` and `cmd/ingestor` per
the locked triage scope on #1010.
Precedence (env wins):
1. `GOMEMLIMIT` env var
2. `runtime.maxMemoryMB` config field (new)
3. Server only: implicit `packetStore.maxMemoryMB * 1.5` (existing #836
behavior, unchanged when `runtime.maxMemoryMB` is absent)
4. Otherwise unset — default Go behavior preserved (backwards
compatible)
Each startup logs a `[memlimit]` line echoing the effective
source/limit, or an "unset → default" note when neither is set.
## Changes
- `cmd/ingestor/memlimit.go` — new, `applyMemoryLimit(runtimeMaxMB,
envSet)`.
- `cmd/ingestor/memlimit_test.go` — new, env/config/none/precedence
assertions.
- `cmd/ingestor/config.go` — new `RuntimeConfig{MaxMemoryMB int}` field.
- `cmd/ingestor/main.go` — wires `applyMemoryLimit` into startup right
after `LoadConfig`.
- `cmd/server/config.go` — new `RuntimeConfig` + `cfg.Runtime` field.
- `cmd/server/main.go` — adds explicit `runtime.maxMemoryMB` precedence
over packetStore-derived; existing `warnIfMemlimitUnderprovisioned`
(#1264) unchanged.
- `config.example.json` — new `runtime` block with
`_comment_runtime_maxMemoryMB` per the Config Documentation Rule.
- `README.md` — sizing-table row with ≥1.5× working set floor +
death-spiral warning.
## TDD
- Red: `929da3c6` — ingestor `applyMemoryLimit` stub returns
`(0,"none")`; four tests fail on assertions (`expected source=env, got
"none"`, etc.) — no compile errors.
- Green: `953ec9d8` — implements ingestor `applyMemoryLimit`, wires
startup, threads `runtime.maxMemoryMB` through server too.
## Preflight
`bash ~/.openclaw/skills/pr-preflight/scripts/run-all.sh origin/master`
→ clean (all gates pass, all warnings pass).
## Out of scope
- `pprof`-verified GC-trigger acceptance criterion from the original
issue — requires production tracing; the triage scope is the
operator-tunable plumbing.
- Container auto-detection of cgroup memory limit (already covered by
#1264's `warnIfMemlimitUnderprovisioned`).
---------
Co-authored-by: corescope-bot <bot@corescope>
