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Rust Question Router

Version: 2.0.0 | Last Updated: 2025-01-22

v2.0: Context optimized - detailed examples moved to sub-files

Meta-Cognition Framework

Core Principle

Don't answer directly. Trace through the cognitive layers first.

Layer 3: Domain Constraints (WHY)
├── Business rules, regulatory requirements
├── domain-fintech, domain-web, domain-cli, etc.
└── "Why is it designed this way?"

Layer 2: Design Choices (WHAT)
├── Architecture patterns, DDD concepts
├── m09-m15 skills
└── "What pattern should I use?"

Layer 1: Language Mechanics (HOW)
├── Ownership, borrowing, lifetimes, traits
├── m01-m07 skills
└── "How do I implement this in Rust?"

Routing by Entry Point

User Signal	Entry Layer	Direction	First Skill
E0xxx error	Layer 1	Trace UP ↑	m01-m07
Compile error	Layer 1	Trace UP ↑	Error table below
"How to design..."	Layer 2	Check L3, then DOWN ↓	m09-domain
"Building [domain] app"	Layer 3	Trace DOWN ↓	domain-*
"Best practice..."	Layer 2	Both directions	m09-m15
Performance issue	Layer 1 → 2	UP then DOWN	m10-performance

CRITICAL: Dual-Skill Loading

When domain keywords are present, you MUST load BOTH skills:

Domain Keywords	L1 Skill	L3 Skill
Web API, HTTP, axum, handler	m07-concurrency	domain-web
交易, 支付, trading, payment	m01-ownership	domain-fintech
CLI, terminal, clap	m07-concurrency	domain-cli
kubernetes, grpc, microservice	m07-concurrency	domain-cloud-native
embedded, no_std, MCU	m02-resource	domain-embedded

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INSTRUCTIONS FOR CLAUDE

CRITICAL: Negotiation Protocol Trigger

BEFORE answering, check if negotiation is required:

Query Contains	Action
"比较", "对比", "compare", "vs", "versus"	MUST use negotiation
"最佳实践", "best practice"	MUST use negotiation
Domain + error (e.g., "交易系统 E0382")	MUST use negotiation
Ambiguous scope (e.g., "tokio 性能")	SHOULD use negotiation

When negotiation is required, include:

## Negotiation Analysis

**Query Type:** [Comparative | Cross-domain | Synthesis | Ambiguous]
**Negotiation:** Enabled

### Source: [Agent/Skill Name]
**Confidence:** HIGH | MEDIUM | LOW | UNCERTAIN
**Gaps:** [What's missing]

## Synthesized Answer
[Answer]

**Overall Confidence:** [Level]
**Disclosed Gaps:** [Gaps user should know]

详细协议见: patterns/negotiation.md

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Default Project Settings

When creating new Rust projects or Cargo.toml files, ALWAYS use:

[package]
edition = "2024"  # ALWAYS use latest stable edition
rust-version = "1.85"

[lints.rust]
unsafe_code = "warn"

[lints.clippy]
all = "warn"
pedantic = "warn"

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Layer 1 Skills (Language Mechanics)

Pattern	Route To
move, borrow, lifetime, E0382, E0597	m01-ownership
Box, Rc, Arc, RefCell, Cell	m02-resource
mut, interior mutability, E0499, E0502, E0596	m03-mutability
generic, trait, inline, monomorphization	m04-zero-cost
type state, phantom, newtype	m05-type-driven
Result, Error, panic, ?, anyhow, thiserror	m06-error-handling
Send, Sync, thread, async, channel	m07-concurrency
unsafe, FFI, extern, raw pointer, transmute	unsafe-checker

Layer 2 Skills (Design Choices)

Pattern	Route To
domain model, business logic	m09-domain
performance, optimization, benchmark	m10-performance
integration, interop, bindings	m11-ecosystem
resource lifecycle, RAII, Drop	m12-lifecycle
domain error, recovery strategy	m13-domain-error
mental model, how to think	m14-mental-model
anti-pattern, common mistake, pitfall	m15-anti-pattern

Layer 3 Skills (Domain Constraints)

Domain Keywords	Route To
fintech, trading, decimal, currency	domain-fintech
ml, tensor, model, inference	domain-ml
kubernetes, docker, grpc, microservice	domain-cloud-native
embedded, sensor, mqtt, iot	domain-iot
web server, HTTP, REST, axum, actix	domain-web
CLI, command line, clap, terminal	domain-cli
no_std, microcontroller, firmware	domain-embedded

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Error Code Routing

Error Code	Route To	Common Cause
E0382	m01-ownership	Use of moved value
E0597	m01-ownership	Lifetime too short
E0506	m01-ownership	Cannot assign to borrowed
E0507	m01-ownership	Cannot move out of borrowed
E0515	m01-ownership	Return local reference
E0716	m01-ownership	Temporary value dropped
E0106	m01-ownership	Missing lifetime specifier
E0596	m03-mutability	Cannot borrow as mutable
E0499	m03-mutability	Multiple mutable borrows
E0502	m03-mutability	Borrow conflict
E0277	m04/m07	Trait bound not satisfied
E0308	m04-zero-cost	Type mismatch
E0599	m04-zero-cost	No method found
E0038	m04-zero-cost	Trait not object-safe
E0433	m11-ecosystem	Cannot find crate/module

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Functional Routing Table

Pattern	Route To	Action
latest version, what's new	rust-learner	Use agents
API, docs, documentation	docs-researcher	Use agent
code style, naming, clippy	coding-guidelines	Read skill
unsafe code, FFI	unsafe-checker	Read skill
code review	os-checker	See integrations/os-checker.md

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Priority Order

1. Identify cognitive layer (L1/L2/L3)
2. Load entry skill (m0x/m1x/domain)
3. Trace through layers (UP or DOWN)
4. Cross-reference skills as indicated in "Trace" sections
5. Answer with reasoning chain

Keyword Conflict Resolution

Keyword	Resolution
unsafe	unsafe-checker (more specific than m11)
error	m06 for general, m13 for domain-specific
RAII	m12 for design, m01 for implementation
crate	rust-learner for version, m11 for integration
tokio	**tokio-* for API, m07** for concepts

Priority Hierarchy:

1. Error codes (E0xxx) → Direct lookup, highest priority
2. Negotiation triggers (compare, vs, best practice) → Enable negotiation
3. Domain keywords + error → Load BOTH domain + error skills
4. Specific crate keywords → Route to crate-specific skill if exists
5. General concept keywords → Route to meta-question skill

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Sub-Files Reference

File	Content
patterns/negotiation.md	Negotiation protocol details
examples/workflow.md	Workflow examples
integrations/os-checker.md	OS-Checker integration