Source: governance/RPAS-COL.md — branch adpa-project-charter, repository mdresch/adpa.

✅ RPAS‑CM‑COL‑001 v1.0.0 (CSR-42)

Collision-Prevention & Multi-Agent Coordination Protocol

Purpose

As ADPA scales to multi-agent and multi-tier collaboration, the probability of authority, execution, and semantic collisions increases. This protocol (COL) provides the deterministic coordination mechanisms required to ensure ecosystem stability, prevent divergent state transitions, and maintain human-in-the-loop authority across all automated actors.

This protocol enforces:

• Collision-Prevention Measures (CP1–CP6)
• Multi-Agent Coordination Rules (COL-G1–COL-G6)

---

✅ 1. Collision-Prevention Measures

CP1 — Tier Collision Prevention

Protects authority boundaries between Intelligence, Experience, and Orchestration tiers.

• Rule: No actor may perform a ritual assigned to another tier.
• Enforcement: Orchestrator rejects any mutation request not originating from an authorized Decision ritual.

---

CP2 — Execution Collision Prevention

Prevents concurrent or double-mutations of the same governing artifact.

• Mechanism: CSR epoch locking and idempotent ritual execution.
• Guarantee: If an execution is replayed, the state mutation does not occur if the CSR version matches.

---

CP3 — Amendment Collision Prevention

Ensures that multiple agents do not attempt to replace the same RTM item or produce conflicting lineages.

• Enforcement: Append-only ledger validation and amendment-specific IDs.

---

CP4 — Semantic Collision Prevention (DRACO)

Prevents "Divergent Intent" where multiple agents interpret the same requirement differently.

• Audit: DRACO Review Board validates semantic consistency before the Decision ritual.

---

CP5 — Build / Topology Collision Prevention

Prevents broken references and service-graph divergence in the Aspire mesh.

• Gate: AEV Gates 2 and 3 enforce mechanical and topology integrity before any commit.

---

CP6 — Governance Collision Prevention

The final safety barrier (AEV Gate 4).

• Prohibition: No UI-side mutation, no AI-side execution, and no direct database writes.

---

✅ 2. Multi-Agent Coordination Protocol

COL-G1: Explicit Task Allocation

Each agent must operate within a strict atomic scope declared via TCL-001. Path overlaps between agents are prohibited unless explicitly coordinated.

---

COL-G2: Pre-emptive Conflict Detection

Before starting AEV Phase 2, agents must check:

• Active agent claims in the RPAS-TAR registry.
• Pending uncommitted Changesets.
• Overlapping file-path deltas.

---

COL-G3: Pessimistic Locking

Agents must claim and lock target files, RTM items, or topology nodes before mutating state. Locks are formal governance artifacts.

---

COL-G4: Atomic Commit & Rollback

All agent mutations must be atomic. On any collision detection during Gate 1, the change must be rolled back to the last safe CSR baseline.

---

COL-G5: Structured Communication

Agents communicate coordination intentions through machine-readable, deterministic conflict protocols. Unresolved issues escalate to ESC-MULTI.

---

COL-G6: Human Authority

Agents are prohibited from self-arbitrating multi-agent collisions. The human operator retains final authority over all coordination decisions.

---

✅ 3. Collision Scenario Mapping

Scenario	Mode	Source	Protection
COL-OVERWRITE	Physical	Concurrent file edits	CP2 / G3 Lock
COL-DEPENDENCY	Mechanical	Missing prerequisites	G2 Check / CP5
COL-SCOPE	Logical	Ambiguous scope	G1 Allocation
COL-RACE	Runtime	Shared resource contention	G3 Lock
COL-INTENT	Semantic	Divergent interpretations	CP4 (DRACO)

---

✅ 4. Governance Lineage

• Artifact ID: RPAS-CM-COL-001
• Version: 1.0.0
• Epoch: CSR-42
• Parents: RPAS-CM-GRA-001
• Status: Baseline-Ready
• Author: Manus AI (advisory)