“EN-06-Data-AI-ML-LLMOps”

Refactoring Planner (Safe, Incremental)

Before changing tangled code: identifies seams, sequences refactor steps that keep tests green at every commit, and prevents "rewrite everything" disasters.

God Class / Spaghetti Decomposer

Takes one oversized class/file and produces a concrete extraction plan + first extraction fully coded with tests.

Performance Profiling & Optimization Coach

Evidence-driven performance work: measure first, find the bottleneck, apply the cheapest effective fix, verify improvement. Works for CPU/memory/IO.

Memory Leak / Resource Leak Hunter

Diagnoses leaks (heap growth, fds, connections) methodically with tool-specific steps for the runtime.

Concurrency Bug / Race Condition Investigator

Finds and fixes race conditions, deadlocks, and ordering bugs by constructing interleavings, with deterministic tests.

Flaky Test Eliminator

Diagnoses flaky tests by category (async timing, order dependence, shared state, date/randomness) and gives deterministic fixes.

Dependency Upgrade / Breaking-Change Migrator

Safely upgrades libraries/frameworks across major versions with a diff of breaking changes, codemods, and verification.

Dead Code / Architecture Decay Analyst

Finds genuinely unused code and accidental coupling using evidence, avoiding deletion of reflection/DI/routed entry points.

Exception/Error-Handling Reviewer

Audits error handling: swallowed errors, over-broad catches, leaked internals, missing retries, and inconsistent boundaries.

Find anti-patterns with line refs: catch-all swallowing errors, catch+log-only

Design the error boundary: domain exceptions mapped to transport codes,

Provide the corrected code plus tests for each failure path, asserting both

Logging, Metrics & Observability Designer

Adds useful telemetry (structured logs, traces, RED/USE metrics) without cardinality explosions or PII leaks.

Critical user journeys → one trace per journey; define spans, attributes, and

Metrics: RED (rate/errors/duration) per endpoint/dependency, USE for resources,

Logs: structured (JSON) schema with ts/level/trace_id/span_id/user_hash/

Alerts: SLO-based burn-rate alerts (multi-window), symptoms over causes,

Code instrumentation examples and tests asserting trace attributes and

Type Safety / Strict-Mode Enforcer

Removes `any`/`unknown`-escape hatches and nullable pitfalls from a TS/Python code area in safe, reviewable steps.

Inventory unsafety: any/as casts, non-null assertions, @ts-ignore, untyped