chore: soak test scripts to typescript

[AmberFryar]

Description

Converted soak-test.sh, soak-summary.sh, soak-test-metrics.sh, soak-record-metrics.sh to .ts files to reduce complexity and increase maintainability.

End to End Test:
(See Pepr Excellent Examples)

Related Issue

Fixes #

Relates to #

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc)

Checklist before merging

• Unit, Integration, docs, adr added or updated as needed
• Contributor Guide Steps followed

[greptile-apps]

Greptile Summary

This PR converts four soak-test shell scripts to TypeScript, wiring them into the workflow with a new setup-node/npm ci step. The port is largely faithful — metric assertions, per-even-iteration pod stability checks, and updatePodMap inside the loop are all correctly restored — with one reporting regression: the post-stabilization cache miss trend section (### Cache Miss Trend) present in soak-summary.sh is absent from soak-summary.ts.

Confidence Score: 5/5

Safe to merge; the only finding is a P2 reporting regression in the step summary output that does not affect test correctness.

All functional test logic (metric assertions, pod stability, updatePodMap per even iteration) is correctly ported. The single finding is a missing informational section in the GitHub Step Summary — the test will still pass or fail correctly without it.

scripts/soak-summary.ts — missing cache miss trend section

Important Files Changed

Filename	Overview
scripts/soak-test.ts	New TypeScript soak test loop; restores metric assertions and per-even-iteration pod-stability + updatePodMap calls; sleep unconditionally at end of loop including final iteration; spawns a new npx tsx subprocess for record-metrics each of 70 iterations
scripts/soak-summary.ts	New TypeScript summary writer; validates GITHUB_STEP_SUMMARY and args; missing post-stabilization cache miss trend section that was present in the bash equivalent
scripts/soak-record-metrics.ts	Faithful TypeScript port of soak-record-metrics.sh; delta computation, state file, and CSV append logic are correct
.github/workflows/soak.yaml	Adds setup-node (v24) and npm ci before npx tsx; switches bash script invocations to TypeScript; CACHE_MISS_GROWTH_THRESHOLD still defined as env var for soak-test.ts but no longer passed as positional arg to summary script
config/tsconfig.scripts.json	New tsconfig for scripts/ directory; strict, NodeNext module resolution, ES2022 target — appropriate for tsx-executed scripts
config/eslint.root.config.mjs	Adds tsconfig.scripts.json to the ESLint parser project list so TypeScript scripts are linted correctly

Sequence Diagram

sequenceDiagram
    participant WF as soak.yaml
    participant ST as soak-test.ts
    participant RM as soak-record-metrics.ts
    participant SS as soak-summary.ts
    participant K8s as kubectl/cluster

    WF->>ST: npx tsx soak-test.ts
    ST->>K8s: updatePodMap() — initial snapshot
    loop i = 1..70 (every 5 min)
        ST->>K8s: collectMetrics()
        ST->>RM: npx tsx soak-record-metrics.ts i auditor informer metrics.csv
        RM-->>ST: appends CSV row
        ST->>ST: assertMetrics(i) — ctrl failures, cache miss growth, resync failures
        opt i % 2 === 0
            ST->>K8s: checkPodStability(i) + updatePodMap()
        end
        ST->>ST: sleep 300s
    end
    ST-->>WF: exit 0 / exit 1 + failure-reason.txt
    WF->>SS: npx tsx soak-summary.ts metrics.csv informer-log failure-reason
    SS->>SS: read CSV, compute totals
    SS-->>WF: write GITHUB_STEP_SUMMARY

Loading

_{Reviews (3): Last reviewed commit: "chore: address greptile comments" | Re-trigger Greptile}