feat(core): v0.3 failure detection rules — 5 new rules (15 total)

[sepehr-safari]

Summary

Implements 5 new failure detection rules for v0.3.0 (Issues #84), bringing the total from 10 to 15:

1. SUSPICIOUS_SESSION_DURATION (warning) — Session < 60s or > 24h
2. SLOW_RESPONSE (warning) — Call→CallResult/CallError gap > 10s
3. HEARTBEAT_INTERVAL_VIOLATION (info) — Heartbeat intervals deviate >50% from expected
4. METER_VALUE_ANOMALY (warning) — Non-monotonic or negative meter readings
5. UNRESPONSIVE_CSMS (critical) — Call with no matching CallResult or CallError

Implementation

• Added 5 new FailureCode values to types.ts
• Added detection logic, suggested steps, and severity entries to detection.ts
• 14 new unit tests covering positive + negative cases for each rule
• Audited all existing 10 scenarios and 3 fixtures — no false positives from new rules

Files Changed

• packages/toolkit/src/core/types.ts — 5 new FailureCode values
• packages/toolkit/src/core/detection.ts — 5 rule implementations + suggested steps + severity
• packages/toolkit/src/core/detection.test.ts — 14 new tests
• .changeset/v03-detection-rules.md — minor bump changeset
• CURRENT_STATE.md — updated with v0.3.0 progress

Closes #84

Checklist

• 5 new FailureCode values added to types.ts
• Each rule has implementation in detection.ts with suggested steps
• Unit tests for each rule (positive + negative cases)
• All existing tests still pass (309 total, up from 295)
• Existing scenarios audited — no false positives
• Lint, typecheck, format all pass
• Changeset added with minor bump
• CURRENT_STATE.md updated

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Project	Deployment	Actions	Updated (UTC)
ocpp-debugkit-web	Ready	Preview, Comment	Jul 8, 2026 11:58pm