Episode 2 — React Frontend Architecture NextJS / 2.14 — State Management Using Redux

2.14.f — Alternatives: Recoil, Zustand, and MobX

<< 2.14 Overview

Learning outcomes

Compare Redux vs Zustand vs MobX vs Recoil on axes: mental model, ergonomics, debuggability.
Pick a tool for a scenario without ideology.

Zustand

Mental model: small stores created with functions; subscribe to slices; minimal boilerplate.

Great when: you want lightweight global state without heavy ceremony.

Risk: conventions must be enforced by the team (easy to create “anything goes” mutators).

MobX

Mental model: observables + reactions; UI tracks dependencies automatically.

Great when: you want fine-grained reactivity and your team understands observable discipline.

Risk: “invisible” dependencies can surprise newcomers; needs strong team patterns.

Recoil

Mental model: atoms and selectors as a graph; async selectors for derived async state.

Great when: you want flexible derived state graphs in React-heavy apps.

Risk: graph complexity can grow quickly; needs governance.

Redux vs the field

Redux remains strong where explicit actions and central reducers matter for debugging, onboarding, and large-team consistency—especially with RTK.

Appendix — Scenario bank (basic → advanced)

Use these as design-review flashcards: what breaks, why Redux helps or hurts, what you change, what you say in an interview.

RX5-001 — Alternatives scenario #1

Level: Beginner
Symptom: inconsistent UI state across routes after 13 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-002 — Alternatives scenario #2

Level: Beginner+
Symptom: inconsistent UI state across routes after 26 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-003 — Alternatives scenario #3

Level: Intermediate
Symptom: inconsistent UI state across routes after 39 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-004 — Alternatives scenario #4

Level: Intermediate+
Symptom: inconsistent UI state across routes after 52 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-005 — Alternatives scenario #5

Level: Advanced
Symptom: inconsistent UI state across routes after 65 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-006 — Alternatives scenario #6

Level: Advanced+
Symptom: inconsistent UI state across routes after 78 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-007 — Alternatives scenario #7

Level: Beginner
Symptom: inconsistent UI state across routes after 91 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-008 — Alternatives scenario #8

Level: Beginner+
Symptom: inconsistent UI state across routes after 104 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-009 — Alternatives scenario #9

Level: Intermediate
Symptom: inconsistent UI state across routes after 117 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-010 — Alternatives scenario #10

Level: Intermediate+
Symptom: inconsistent UI state across routes after 130 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-011 — Alternatives scenario #11

Level: Advanced
Symptom: inconsistent UI state across routes after 143 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-012 — Alternatives scenario #12

Level: Advanced+
Symptom: inconsistent UI state across routes after 156 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-013 — Alternatives scenario #13

Level: Beginner
Symptom: inconsistent UI state across routes after 169 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-014 — Alternatives scenario #14

Level: Beginner+
Symptom: inconsistent UI state across routes after 182 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-015 — Alternatives scenario #15

Level: Intermediate
Symptom: inconsistent UI state across routes after 195 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-016 — Alternatives scenario #16

Level: Intermediate+
Symptom: inconsistent UI state across routes after 8 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-017 — Alternatives scenario #17

Level: Advanced
Symptom: inconsistent UI state across routes after 21 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-018 — Alternatives scenario #18

Level: Advanced+
Symptom: inconsistent UI state across routes after 34 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-019 — Alternatives scenario #19

Level: Beginner
Symptom: inconsistent UI state across routes after 47 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-020 — Alternatives scenario #20

Level: Beginner+
Symptom: inconsistent UI state across routes after 60 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-021 — Alternatives scenario #21

Level: Intermediate
Symptom: inconsistent UI state across routes after 73 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-022 — Alternatives scenario #22

Level: Intermediate+
Symptom: inconsistent UI state across routes after 86 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-023 — Alternatives scenario #23

Level: Advanced
Symptom: inconsistent UI state across routes after 99 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-024 — Alternatives scenario #24

Level: Advanced+
Symptom: inconsistent UI state across routes after 112 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-025 — Alternatives scenario #25

Level: Beginner
Symptom: inconsistent UI state across routes after 125 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-026 — Alternatives scenario #26

Level: Beginner+
Symptom: inconsistent UI state across routes after 138 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-027 — Alternatives scenario #27

Level: Intermediate
Symptom: inconsistent UI state across routes after 151 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-028 — Alternatives scenario #28

Level: Intermediate+
Symptom: inconsistent UI state across routes after 164 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-029 — Alternatives scenario #29

Level: Advanced
Symptom: inconsistent UI state across routes after 177 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-030 — Alternatives scenario #30

Level: Advanced+
Symptom: inconsistent UI state across routes after 190 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-031 — Alternatives scenario #31

Level: Beginner
Symptom: inconsistent UI state across routes after 3 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-032 — Alternatives scenario #32

Level: Beginner+
Symptom: inconsistent UI state across routes after 16 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-033 — Alternatives scenario #33

Level: Intermediate
Symptom: inconsistent UI state across routes after 29 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-034 — Alternatives scenario #34

Level: Intermediate+
Symptom: inconsistent UI state across routes after 42 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-035 — Alternatives scenario #35

Level: Advanced
Symptom: inconsistent UI state across routes after 55 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-036 — Alternatives scenario #36

Level: Advanced+
Symptom: inconsistent UI state across routes after 68 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-037 — Alternatives scenario #37

Level: Beginner
Symptom: inconsistent UI state across routes after 81 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-038 — Alternatives scenario #38

Level: Beginner+
Symptom: inconsistent UI state across routes after 94 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-039 — Alternatives scenario #39

Level: Intermediate
Symptom: inconsistent UI state across routes after 107 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-040 — Alternatives scenario #40

Level: Intermediate+
Symptom: inconsistent UI state across routes after 120 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-041 — Alternatives scenario #41

Level: Advanced
Symptom: inconsistent UI state across routes after 133 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-042 — Alternatives scenario #42

Level: Advanced+
Symptom: inconsistent UI state across routes after 146 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-043 — Alternatives scenario #43

Level: Beginner
Symptom: inconsistent UI state across routes after 159 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-044 — Alternatives scenario #44

Level: Beginner+
Symptom: inconsistent UI state across routes after 172 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-045 — Alternatives scenario #45

Level: Intermediate
Symptom: inconsistent UI state across routes after 185 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-046 — Alternatives scenario #46

Level: Intermediate+
Symptom: inconsistent UI state across routes after 198 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-047 — Alternatives scenario #47

Level: Advanced
Symptom: inconsistent UI state across routes after 11 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-048 — Alternatives scenario #48

Level: Advanced+
Symptom: inconsistent UI state across routes after 24 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-049 — Alternatives scenario #49

Level: Beginner
Symptom: inconsistent UI state across routes after 37 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-050 — Alternatives scenario #50

Level: Beginner+
Symptom: inconsistent UI state across routes after 50 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-051 — Alternatives scenario #51

Level: Intermediate
Symptom: inconsistent UI state across routes after 63 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-052 — Alternatives scenario #52

Level: Intermediate+
Symptom: inconsistent UI state across routes after 76 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-053 — Alternatives scenario #53

Level: Advanced
Symptom: inconsistent UI state across routes after 89 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-054 — Alternatives scenario #54

Level: Advanced+
Symptom: inconsistent UI state across routes after 102 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-055 — Alternatives scenario #55

Level: Beginner
Symptom: inconsistent UI state across routes after 115 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-056 — Alternatives scenario #56

Level: Beginner+
Symptom: inconsistent UI state across routes after 128 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-057 — Alternatives scenario #57

Level: Intermediate
Symptom: inconsistent UI state across routes after 141 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-058 — Alternatives scenario #58

Level: Intermediate+
Symptom: inconsistent UI state across routes after 154 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-059 — Alternatives scenario #59

Level: Advanced
Symptom: inconsistent UI state across routes after 167 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-060 — Alternatives scenario #60

Level: Advanced+
Symptom: inconsistent UI state across routes after 180 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-061 — Alternatives scenario #61

Level: Beginner
Symptom: inconsistent UI state across routes after 193 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-062 — Alternatives scenario #62

Level: Beginner+
Symptom: inconsistent UI state across routes after 6 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-063 — Alternatives scenario #63

Level: Intermediate
Symptom: inconsistent UI state across routes after 19 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-064 — Alternatives scenario #64

Level: Intermediate+
Symptom: inconsistent UI state across routes after 32 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-065 — Alternatives scenario #65

Level: Advanced
Symptom: inconsistent UI state across routes after 45 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-066 — Alternatives scenario #66

Level: Advanced+
Symptom: inconsistent UI state across routes after 58 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-067 — Alternatives scenario #67

Level: Beginner
Symptom: inconsistent UI state across routes after 71 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-068 — Alternatives scenario #68

Level: Beginner+
Symptom: inconsistent UI state across routes after 84 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-069 — Alternatives scenario #69

Level: Intermediate
Symptom: inconsistent UI state across routes after 97 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-070 — Alternatives scenario #70

Level: Intermediate+
Symptom: inconsistent UI state across routes after 110 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-071 — Alternatives scenario #71

Level: Advanced
Symptom: inconsistent UI state across routes after 123 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-072 — Alternatives scenario #72

Level: Advanced+
Symptom: inconsistent UI state across routes after 136 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-073 — Alternatives scenario #73

Level: Beginner
Symptom: inconsistent UI state across routes after 149 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-074 — Alternatives scenario #74

Level: Beginner+
Symptom: inconsistent UI state across routes after 162 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-075 — Alternatives scenario #75

Level: Intermediate
Symptom: inconsistent UI state across routes after 175 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-076 — Alternatives scenario #76

Level: Intermediate+
Symptom: inconsistent UI state across routes after 188 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-077 — Alternatives scenario #77

Level: Advanced
Symptom: inconsistent UI state across routes after 1 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-078 — Alternatives scenario #78

Level: Advanced+
Symptom: inconsistent UI state across routes after 14 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-079 — Alternatives scenario #79

Level: Beginner
Symptom: inconsistent UI state across routes after 27 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-080 — Alternatives scenario #80

Level: Beginner+
Symptom: inconsistent UI state across routes after 40 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-081 — Alternatives scenario #81

Level: Intermediate
Symptom: inconsistent UI state across routes after 53 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-082 — Alternatives scenario #82

Level: Intermediate+
Symptom: inconsistent UI state across routes after 66 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-083 — Alternatives scenario #83

Level: Advanced
Symptom: inconsistent UI state across routes after 79 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-084 — Alternatives scenario #84

Level: Advanced+
Symptom: inconsistent UI state across routes after 92 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-085 — Alternatives scenario #85

Level: Beginner
Symptom: inconsistent UI state across routes after 105 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-086 — Alternatives scenario #86

Level: Beginner+
Symptom: inconsistent UI state across routes after 118 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-087 — Alternatives scenario #87

Level: Intermediate
Symptom: inconsistent UI state across routes after 131 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-088 — Alternatives scenario #88

Level: Intermediate+
Symptom: inconsistent UI state across routes after 144 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-089 — Alternatives scenario #89

Level: Advanced
Symptom: inconsistent UI state across routes after 157 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-090 — Alternatives scenario #90

Level: Advanced+
Symptom: inconsistent UI state across routes after 170 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-091 — Alternatives scenario #91

Level: Beginner
Symptom: inconsistent UI state across routes after 183 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-092 — Alternatives scenario #92

Level: Beginner+
Symptom: inconsistent UI state across routes after 196 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-093 — Alternatives scenario #93

Level: Intermediate
Symptom: inconsistent UI state across routes after 9 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-094 — Alternatives scenario #94

Level: Intermediate+
Symptom: inconsistent UI state across routes after 22 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-095 — Alternatives scenario #95

Level: Advanced
Symptom: inconsistent UI state across routes after 35 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-096 — Alternatives scenario #96

Level: Advanced+
Symptom: inconsistent UI state across routes after 48 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-097 — Alternatives scenario #97

Level: Beginner
Symptom: inconsistent UI state across routes after 61 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-098 — Alternatives scenario #98

Level: Beginner+
Symptom: inconsistent UI state across routes after 74 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-099 — Alternatives scenario #99

Level: Intermediate
Symptom: inconsistent UI state across routes after 87 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-100 — Alternatives scenario #100

Level: Intermediate+
Symptom: inconsistent UI state across routes after 100 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-101 — Alternatives scenario #101

Level: Advanced
Symptom: inconsistent UI state across routes after 113 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-102 — Alternatives scenario #102

Level: Advanced+
Symptom: inconsistent UI state across routes after 126 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-103 — Alternatives scenario #103

Level: Beginner
Symptom: inconsistent UI state across routes after 139 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-104 — Alternatives scenario #104

Level: Beginner+
Symptom: inconsistent UI state across routes after 152 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-105 — Alternatives scenario #105

Level: Intermediate
Symptom: inconsistent UI state across routes after 165 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-106 — Alternatives scenario #106

Level: Intermediate+
Symptom: inconsistent UI state across routes after 178 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-107 — Alternatives scenario #107

Level: Advanced
Symptom: inconsistent UI state across routes after 191 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-108 — Alternatives scenario #108

Level: Advanced+
Symptom: inconsistent UI state across routes after 4 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-109 — Alternatives scenario #109

Level: Beginner
Symptom: inconsistent UI state across routes after 17 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-110 — Alternatives scenario #110

Level: Beginner+
Symptom: inconsistent UI state across routes after 30 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-111 — Alternatives scenario #111

Level: Intermediate
Symptom: inconsistent UI state across routes after 43 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-112 — Alternatives scenario #112

Level: Intermediate+
Symptom: inconsistent UI state across routes after 56 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-113 — Alternatives scenario #113

Level: Advanced
Symptom: inconsistent UI state across routes after 69 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-114 — Alternatives scenario #114

Level: Advanced+
Symptom: inconsistent UI state across routes after 82 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-115 — Alternatives scenario #115

Level: Beginner
Symptom: inconsistent UI state across routes after 95 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-116 — Alternatives scenario #116

Level: Beginner+
Symptom: inconsistent UI state across routes after 108 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-117 — Alternatives scenario #117

Level: Intermediate
Symptom: inconsistent UI state across routes after 121 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-118 — Alternatives scenario #118

Level: Intermediate+
Symptom: inconsistent UI state across routes after 134 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-119 — Alternatives scenario #119

Level: Advanced
Symptom: inconsistent UI state across routes after 147 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-120 — Alternatives scenario #120

Level: Advanced+
Symptom: inconsistent UI state across routes after 160 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-121 — Alternatives scenario #121

Level: Beginner
Symptom: inconsistent UI state across routes after 173 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-122 — Alternatives scenario #122

Level: Beginner+
Symptom: inconsistent UI state across routes after 186 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-123 — Alternatives scenario #123

Level: Intermediate
Symptom: inconsistent UI state across routes after 199 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-124 — Alternatives scenario #124

Level: Intermediate+
Symptom: inconsistent UI state across routes after 12 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-125 — Alternatives scenario #125

Level: Advanced
Symptom: inconsistent UI state across routes after 25 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-126 — Alternatives scenario #126

Level: Advanced+
Symptom: inconsistent UI state across routes after 38 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-127 — Alternatives scenario #127

Level: Beginner
Symptom: inconsistent UI state across routes after 51 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-128 — Alternatives scenario #128

Level: Beginner+
Symptom: inconsistent UI state across routes after 64 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-129 — Alternatives scenario #129

Level: Intermediate
Symptom: inconsistent UI state across routes after 77 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-130 — Alternatives scenario #130

Level: Intermediate+
Symptom: inconsistent UI state across routes after 90 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-131 — Alternatives scenario #131

Level: Advanced
Symptom: inconsistent UI state across routes after 103 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-132 — Alternatives scenario #132

Level: Advanced+
Symptom: inconsistent UI state across routes after 116 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-133 — Alternatives scenario #133

Level: Beginner
Symptom: inconsistent UI state across routes after 129 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-134 — Alternatives scenario #134

Level: Beginner+
Symptom: inconsistent UI state across routes after 142 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-135 — Alternatives scenario #135

Level: Intermediate
Symptom: inconsistent UI state across routes after 155 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-136 — Alternatives scenario #136

Level: Intermediate+
Symptom: inconsistent UI state across routes after 168 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-137 — Alternatives scenario #137

Level: Advanced
Symptom: inconsistent UI state across routes after 181 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-138 — Alternatives scenario #138

Level: Advanced+
Symptom: inconsistent UI state across routes after 194 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-139 — Alternatives scenario #139

Level: Beginner
Symptom: inconsistent UI state across routes after 7 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-140 — Alternatives scenario #140

Level: Beginner+
Symptom: inconsistent UI state across routes after 20 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-141 — Alternatives scenario #141

Level: Intermediate
Symptom: inconsistent UI state across routes after 33 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-142 — Alternatives scenario #142

Level: Intermediate+
Symptom: inconsistent UI state across routes after 46 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-143 — Alternatives scenario #143

Level: Advanced
Symptom: inconsistent UI state across routes after 59 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-144 — Alternatives scenario #144

Level: Advanced+
Symptom: inconsistent UI state across routes after 72 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-145 — Alternatives scenario #145

Level: Beginner
Symptom: inconsistent UI state across routes after 85 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-146 — Alternatives scenario #146

Level: Beginner+
Symptom: inconsistent UI state across routes after 98 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-147 — Alternatives scenario #147

Level: Intermediate
Symptom: inconsistent UI state across routes after 111 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-148 — Alternatives scenario #148

Level: Intermediate+
Symptom: inconsistent UI state across routes after 124 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-149 — Alternatives scenario #149

Level: Advanced
Symptom: inconsistent UI state across routes after 137 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-150 — Alternatives scenario #150

Level: Advanced+
Symptom: inconsistent UI state across routes after 150 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-151 — Alternatives scenario #151

Level: Beginner
Symptom: inconsistent UI state across routes after 163 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-152 — Alternatives scenario #152

Level: Beginner+
Symptom: inconsistent UI state across routes after 176 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-153 — Alternatives scenario #153

Level: Intermediate
Symptom: inconsistent UI state across routes after 189 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Redux abandoned for fad without measuring actual pain (over-migration).
Primary remediation: Pilot migrations on one vertical slice; document rollback.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-154 — Alternatives scenario #154

Level: Intermediate+
Symptom: inconsistent UI state across routes after 2 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Recoil selector graphs becoming undebuggable without discipline.
Primary remediation: Assign ownership per domain slice; forbid overlapping stores.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-155 — Alternatives scenario #155

Level: Advanced
Symptom: inconsistent UI state across routes after 15 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: MobX reactions invisibly coupling components causing surprise updates.
Primary remediation: Create atom registries and typed helpers for common patterns.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-156 — Alternatives scenario #156

Level: Advanced+
Symptom: inconsistent UI state across routes after 28 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Zustand chosen for simplicity but business rules scatter across arbitrary setters.
Primary remediation: Add conventions: domain modules, selectors, and forbidden cross-store writes.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

RX5-157 — Alternatives scenario #157

Level: Beginner
Symptom: inconsistent UI state across routes after 41 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Atom explosion in Recoil without naming and module boundaries.
Primary remediation: Use strict-mode patterns in MobX; document reaction ownership.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Redux trades boilerplate for predictability; Zustand trades ceremony for lighter guardrails.

RX5-158 — Alternatives scenario #158

Level: Beginner+
Symptom: inconsistent UI state across routes after 54 rapid user actions.
Team symptom: impossible reproductions because state updates depend on hidden module globals.
Root cause class: Mixing Redux and Zustand for same domain causing dual sources of truth.
Primary remediation: Partition atoms/selectors; add devtools workflows and naming.
Measurement / proof: time-travel debug log of actions; reproduce with minimal route flow.
Interview one-liner: Pick state tools by team skill, debuggability, and problem shape—not hype.

<< 2.14 Overview