diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index dab1b63..004fcab 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -4,6 +4,23 @@ All notable changes to Quorum will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## [Unreleased]
+
+### Added — Copilot CLI Port: Portable Critic Definitions (PRs #24, #25)
+
+- **YAML-based portable critic definitions** — Evaluation logic extracted from Python critic classes into structured YAML files consumable by any Quorum port (CLI, Claude Code, Copilot). Each YAML contains: system prompt, evaluation categories with framework references, prompt template with variable placeholders, rubric keyword filter, output schema, and pre-screen integration rules.
+  - `critics/correctness.yaml` — 5 categories (COR-01–05): internal contradictions, logical consistency, factual claims, reference accuracy, terminology consistency
+  - `critics/security.yaml` — 14 categories (SEC-01–14) in 3 evaluation tiers, grounded in OWASP ASVS 5.0, CWE Top 25 (2024), NIST SP 800-53 SA-11
+  - `critics/completeness.yaml` — 5 categories (COM-01–05): missing sections, shallow treatment, edge cases, broken promises, requirement gaps
+  - `critics/code_hygiene.yaml` — 12 categories (CAT-01–12) + 6 agentic patterns (AP-01–06), mapped to ISO/IEC 25010:2023 and ISO/IEC 5055:2021 (CISQ)
+- **`verdict-rules.yaml`** — Deterministic aggregation rules, deduplication threshold, and escalation logic as a standalone shared file
+- **`rubrics/documentation.json`** — 12-criteria documentation quality rubric (DOC-001–DOC-012)
+- **`learning/known_issues.json`** — Empty scaffold for pattern accumulation across validation runs
+- **Rewritten SKILL.md orchestrator** — Full 4-critic orchestration with adaptive dispatch tiers (sequential default, opt-in concurrency), progress indicators, error degradation (DEGRADED/PARTIAL/QUORUM_FAILED), and delegation boundary between Code Hygiene and Security critics
+- **Updated README.md** — Reflects new file layout and explains the portable critic definition architecture
+
+---
+
 ## [0.7.3] — 2026-03-15
 
 ### Fixed — Pre-Existing Code Findings Cleanup
diff --git a/ports/copilot-cli/README.md b/ports/copilot-cli/README.md
index c7e4279..90070e7 100644
--- a/ports/copilot-cli/README.md
+++ b/ports/copilot-cli/README.md
@@ -19,26 +19,25 @@ cp -r quorum/ports/copilot-cli ~/.copilot/skills/quorum
 "Run the security critic on auth.py"
 "Check this config for completeness"
 
-### Cross-artifact consistency
+### Cross-artifact consistency (future)
 "Check if implementation.py matches spec.md"
 
 ## What It Checks
 - **Correctness** — Logic errors, contradictions, false claims
 - **Completeness** — Missing sections, edge cases, broken promises
-- **Security** — OWASP ASVS 5.0, CWE Top 25, framework-grounded
-- **Code Hygiene** — ISO 25010/5055, structural quality beyond linting
-- **Cross-Consistency** — Spec/impl, docs/code, schema contracts
+- **Security** — OWASP ASVS 5.0, CWE Top 25, NIST SA-11, framework-grounded
+- **Code Hygiene** — ISO 25010/5055, structural quality beyond linting, agentic code patterns
 
 ## Verdict Scale
-- **PASS** — No issues found
+- **PASS** — No issues found (or only INFO)
 - **PASS_WITH_NOTES** — Minor issues only (MEDIUM/LOW)
-- **REVISE** — HIGH severity issues requiring rework
-- **REJECT** — CRITICAL issues found
+- **REVISE** — Significant issues requiring rework (any CRITICAL, or 3+ HIGH)
+- **REJECT** — Supervisor judgment: artifact fundamentally unsalvageable
 
 ## Requirements
 - GitHub Copilot CLI with skill support
 - Python 3.10+ (for pre-screen script)
-- No additional dependencies
+- No additional dependencies or API keys
 
 ## Skill Structure
 
@@ -46,40 +45,73 @@ cp -r quorum/ports/copilot-cli ~/.copilot/skills/quorum
 ~/.copilot/skills/quorum/
 ├── SKILL.md                    # Orchestration (Copilot reads this)
 ├── quorum-prescreen.py         # Stdlib-only pre-screen script
+├── critics/
+│   ├── correctness.yaml        # Portable critic definition
+│   ├── completeness.yaml       # Portable critic definition
+│   ├── security.yaml           # Portable critic definition (14 SEC categories)
+│   ├── code_hygiene.yaml       # Portable critic definition (12 CAT + 6 AP categories)
+│   ├── correctness.agent.md    # Direct single-critic invocation
+│   ├── completeness.agent.md
+│   ├── security.agent.md
+│   ├── code-hygiene.agent.md
+│   └── cross-consistency.agent.md
 ├── rubrics/
 │   ├── python-code.json        # 25 criteria for Python code
-│   ├── research-synthesis.json # Research report criteria
-│   └── agent-config.json       # Config/YAML criteria
-└── critics/
-    ├── correctness.agent.md    # Direct single-critic invocation
-    ├── completeness.agent.md
-    ├── security.agent.md
-    ├── code-hygiene.agent.md
-    └── cross-consistency.agent.md
+│   ├── documentation.json      # 12 criteria for documentation
+│   ├── agent-config.json       # Config/YAML criteria
+│   └── research-synthesis.json # Research report criteria
+├── learning/
+│   └── known_issues.json       # Pattern accumulation (grows over time)
+└── verdict-rules.yaml          # Deterministic aggregation logic
 ```
 
+### Portable Critic Definitions (YAML)
+
+The `.yaml` critic files are the core innovation of this port. Each contains:
+- **System prompt** — the critic's identity and constraints
+- **Evaluation categories** — structured breakdown with framework references
+- **Prompt template** — with variable placeholders for orchestrator-agnostic use
+- **Output schema** — structured JSON format all critics return
+- **Rubric keyword filter** — criteria selection logic
+- **Pre-screen integration** — how deterministic checks feed into LLM judgment
+
+These YAMLs are designed as the **single source of truth** consumable by any port (CLI, Claude Code, Copilot). The `.agent.md` files provide a simpler direct-invocation alternative for single-critic use.
+
+## Dispatch Tiers
+
+Sequential dispatch by default (safe for ≤16GB RAM devices). Users opt in to concurrency:
+
+| Tier | Flag | Strategy |
+|------|------|----------|
+| 💡 Lightweight | default | Sequential (1 agent at a time) |
+| ⚡ Standard | `--dispatch standard` | 2 concurrent agents |
+| 🚀 Performance | `--dispatch performance` | All agents concurrent |
+
+*Note: Adaptive dispatch is a Copilot port-specific adaptation. The reference implementation uses Python's ThreadPoolExecutor with a fixed worker count.*
+
 ## What Changes vs Reference Implementation
-- LiteLLM provider -> Copilot `task` tool for parallel dispatch
-- ThreadPoolExecutor -> Copilot parallel `task` calls
-- CLI arguments -> natural language invocation
-- Config YAML depth profiles -> SKILL.md instructions
-- Python package -> file-based skill (SKILL.md + scripts + rubrics)
-- Pydantic models -> plain JSON (in prescreen script)
+- LiteLLM provider → Copilot `task` tool for dispatch
+- ThreadPoolExecutor → Copilot parallel `task` calls (opt-in)
+- CLI arguments → natural language invocation
+- Python class critic definitions → portable YAML definitions
+- Config YAML depth profiles → SKILL.md instructions
+- Python package → file-based skill (SKILL.md + scripts + rubrics)
 
 ## What Stays Identical
 - Rubric schema and criteria content
-- Finding JSON schema (FINDINGS_SCHEMA)
+- Finding JSON schema
 - Pre-screen check IDs (PS-001 through PS-010)
 - Verdict taxonomy (PASS / PASS_WITH_NOTES / REVISE / REJECT)
 - Severity levels (CRITICAL / HIGH / MEDIUM / LOW / INFO)
 - Evidence grounding requirement
-- Critic system prompts (verbatim)
+- Critic evaluation logic (extracted verbatim from Python classes)
 
-## What Is NOT Included in This Port
-- **Tester (Phase 3)** — verification requires filesystem access patterns that differ in Copilot
-- **Fix loops** — Copilot's edit model differs from file-write patterns
-- **Learning memory** — future enhancement
+## Not Yet Ported
+- **Tester (L1/L2)** — verification requires filesystem access patterns that differ in Copilot
+- **Fixer** — automated remediation; Copilot's edit model differs
 - **Batch mode** — Copilot invocations are per-file
+- **Cost tracking** — Copilot uses premium requests, not per-token billing
+- **Cross-artifact relationship critic** — parameter reserved, not yet implemented
 
 ## References
 - [Reference Implementation](../../reference-implementation/)