---
name: project-idioms
description: "Use when executing, coordinating, planning, or reviewing project idioms agent workflows, cognitive loops, and architecture standards."
version: 6.0.0
last-updated: 2026-09-29
skills:
  - clean-code
  - codebase-design
  - fabel-protocol
tools: Read, Grep, Glob, Bash, Edit, Write
scripts-binding:
  - .agent/scripts/skill_evolution.js
  - .agent/scripts/verify_all.js
  - .agent/scripts/lint_runner.js
inputs:
  task: "string"
  target_file: "string"
outputs:
  result: "string"
  verification_status: "boolean"
trigger:
  - "idioms"
---

# Project Idioms — Auto-Evolved Skill

## Mandatory Pre-Flight Context Inspection
Before reading, generating, or refactoring code in the `project-idioms` domain, inspect these 5 critical parameters:
1. **System Boundaries & Dependencies**: Verify that all required dependencies exist in target package manifests and environment paths.
2. **Runtime Context & Platform Invariants**: Confirm target platform constraints (Node.js, Browser, Mobile OS, Edge runtime) before applying APIs.
3. **Execution Guardrails**: Identify potential side-effects, state mutations, and unhandled asynchronous exceptions.
4. **Validation & Type Contracts**: Validate input data schemas and strict type constraints across all module interfaces.
5. **Observability & Proof of Execution**: Ensure execution produces tangible verification signals (terminal output, tests, metrics).


## Activation Boundaries
- **Activate when:** Use when executing, coordinating, planning, or reviewing project idioms agent workflows, cognitive loops, and architecture standards.
- **DO NOT activate when:** The task falls outside the `project-idioms` domain or is managed by a different dedicated specialist agent.


## 🔁 Multi-Pass Execution Protocol

| Pass | Phase | Core Action | Adaptive Depth |
|:---|:---|:---|:---|
| **Pass 1** | **Understand** | Deconstruct the user's explicit objective, implicit requirements, and platform constraints. | Fast / Standard / Deep |
| **Pass 2** | **Plan** | Decompose task into smallest logical steps; map dependencies, affected files, and tool calls. | Standard / Deep |
| **Pass 3** | **Execute** | Implement solution with production-grade craft, zero placeholders, and strict typing. | All Modes |
| **Pass 4** | **Verify** | Run linters, unit tests, or compiler checks to validate structural correctness. | All Modes |
| **Pass 5** | **Attack & Falsify** | Perform adversarial search for edge-case failures, counterexamples, race conditions, and traps. | Standard / Deep |
| **Pass 6** | **Harden** | Eliminate discovered friction, optimize performance, and harden error boundaries. | Standard / Deep |
| **Pass 7** | **Quality Gate** | Enforce Verification-Before-Completion (VBC) with concrete terminal proof before finalizing. | All Modes |


---

## 🛠️ Technical Architecture & Reference Recipes

---

> **Authority Level: ABSOLUTE**
> These idioms were extracted from this project's actual code decisions.
> They override all generic agent defaults and best practices.
> Every agent reads this file on activation and adapts its proposals accordingly.

---

## How Idioms Are Born

1. Developer commits code that **differs** from what the AI proposed.
2. `skill_evolution.js digest` extracts the architectural delta (semantic filter).
3. A minimal LLM prompt (< 500 tokens) identifies the **WHY** behind the change.
4. The idiom is recorded here with a stable pattern + reason pair.
5. All future code generations must align with these idioms.

---

## Recorded Idioms

| ID  | Pattern | Why This Project Uses It                               | Domain | Since |
| :-- | :------ | :----------------------------------------------------- | :----- | :---- |
| —   | —       | _No idioms recorded yet. Run your first digest cycle._ | —      | —     |

---

## How to Add New Idioms

Run after committing or staging a meaningful architectural change:

```bash
# Analyze staged changes (default)
node .agent/scripts/skill_evolution.js digest

# Preview without writing
node .agent/scripts/skill_evolution.js digest --dry-run

# Analyze last commit instead of staged
node .agent/scripts/skill_evolution.js digest --head

# Check current idiom count and token savings
node .agent/scripts/skill_evolution.js status
```

---

## Enforcement Rules for All Agents

```
□ Before proposing any code: scan the idiom table above
□ If your proposal contradicts an idiom → flag it explicitly with:
     "⚠️ Note: My proposal differs from Project Idiom #N. Reason: [explain]"
□ Never override an idiom silently
□ When citing an idiom in a review:
     "Per Project Idiom #N: [pattern] — [reason]"
□ If no idioms yet → proceed with domain-standard approaches
```

---

## Digest History

Last digest: `never`
Total cycles: `0`

Run `node .agent/scripts/skill_evolution.js status` to see full statistics.

## 🚨 Edge-Case & Failure Mode Matrix

| Scenario | Risk | Production Mitigation |
|:---|:---|:---|
| **Empty or Null Inputs** | Unhandled exception or unexpected rendering collapse | Enforce fallback guards, optional chaining, and explicit empty state handlers |
| **Network Timeout / Latency** | Hanging operations or duplicate side-effects | Implement bounded abort controllers, exponential backoff, and idempotency keys |
| **Concurrency / Race Conditions** | Stale state overwrite or inconsistent data mutations | Use atomic transactions, mutex locking, or cancel-on-resubmit controls |
| **Invalid Schema / Malformed Payload** | Downstream runtime errors or security injection | Validate boundary payloads with Zod/Pydantic schemas prior to execution |
| **Resource / Memory Saturation** | OOM errors, frame drops, or memory leaks | Clean up listeners, cancel active timers, and enforce pagination/virtualization |


## 🤖 LLM-Specific Traps Table

| Anti-Pattern | What AI Commonly Does Wrong | What Is Actually Correct |
|:---|:---|:---|
| **Hallucinated Tool Capabilities** | Assuming an external library or CLI command exists without verification | Run a verification check or verify package.json before referencing tools |
| **Premature Completion Claim** | Declaring a task finished because code was generated without verification | Execute tests, linters, or terminal commands to provide concrete proof |
| **Context Bloat Dumping** | Pasting entire multi-thousand-line files into prompt context | Extract targeted excerpts, symbols, and signatures to preserve tokens |


## 🏛️ Tribunal Verification & Guardrails

**Active Reviewers:** `orchestrator` · `agent-organizer` · `logic-reviewer`
**Slash Command:** `/review` or `/tribunal-full`

### 🔬 Evidence Standard (Tri-State Verification)
Every finding, audit statement, or completion claim must classify its factual certainty:
- **`[OBSERVED]`**: Directly confirmed in the codebase or verified via executed terminal command.
- **`[INFERRED]`**: Logically deduced from code patterns, architectural data flow, or schema relations.
- **`[UNVERIFIED]`**: Speculative hypothesis or runtime possibility requiring active testing or measurement.

### ✅ Pre-Flight Self-Audit Checklist
```
✅ Did I deconstruct the root objective before proposing architecture?
✅ Did I identify dependencies, bottlenecks, and parallelizable sub-tasks?
✅ Did I avoid over-engineering and select the simplest effective pattern?
✅ Did I verify assumptions with concrete file reads instead of speculation?
✅ Did I establish measurable verification criteria before completion?
```

### 🛑 Verification-Before-Completion (VBC) Protocol
**CRITICAL:** You must follow a strict "evidence-based closeout" state machine.
- ❌ **Forbidden:** Declaring a task complete because the output "looks correct."
- ✅ **Required:** You are explicitly forbidden from finalizing any task without providing **concrete evidence** (terminal output, passing test suites, compiler success, or equivalent operational proof) that your output works as intended.