> ## Documentation Index
> Fetch the complete documentation index at: https://doc.blueapi.ir/llms.txt
> Use this file to discover all available pages before exploring further.

# Phase 0: Research, Architecture, and Documentation Foundation

> Establish the foundational research, system architecture, and documentation for EMEP. This phase delivers core conceptual assets, architectural decisions, and a comprehensive glossary before any implementation begins.

Phase 0 establishes the intellectual and structural foundation for the Entangled Model Evolution Platform (EMEP). Before writing implementation code, the team produces a complete research corpus, system architecture, and living documentation suite. This phase ensures every subsequent engineering decision traces back to documented rationale, canonical terminology, and validated design choices.

## Purpose

The purpose of Phase 0 is to eliminate ambiguity before implementation. EMEP is a complex system spanning model merging, evolutionary search, evaluation, and deployment. Without a shared vocabulary, explicit architecture, and recorded decisions, later phases accumulate technical debt and inconsistent interfaces. Phase 0 produces the reference layer that all other phases depend on.

## Entry Criteria

* Project charter approved and budget allocated
* Core team assigned (research, architecture, technical writing)
* Access to relevant model merging literature and baseline model repositories
* Documentation toolchain (Mintlify, version control, ADR template) provisioned

## Exit Criteria

* All deliverables listed below are published and internally reviewed
* Consistency audit passed: terminology, cross-references, and canonical component names are uniform across all documents
* Architecture review signed off by at least two senior engineers
* ADR log contains no open or disputed decisions

## Primary Components

Phase 0 does not produce executable components, but it defines the interfaces and responsibilities that later phases implement:

* [ModelRegistry](/tracking/model-registry): defined as the canonical catalog for model metadata, versions, and lineage
* [ModelLoader](/compatibility/model-import): specified as the abstraction for loading checkpoints into memory
* [ModelCompatibilityAnalyzer](/compatibility/model-compatibility): described as the service that determines whether two or more models can be merged
* [TensorEngine](/merge/tensor-operations): outlined as the low-level tensor operation layer
* [MergeEngine](/merge/merge-engine): conceptualized as the orchestrator for combining model weights
* [EvaluationEngine](/evaluation/framework): scoped as the framework for assessing merged model quality
* [EvolutionEngine](/evolution/evolution-engine): defined as the search layer that proposes candidate merges
* [ExperimentTracker](/tracking/experiment-tracking): specified as the observability layer for runs and metrics
* [ArtifactStore](/tracking/artifact-registry): described as the persistent storage for models, logs, and artifacts

## Deliverables

| Deliverable     | Path                 | Description                                                   |
| --------------- | -------------------- | ------------------------------------------------------------- |
| Overview        | `/overview/*`        | Product vision, value proposition, and user personas          |
| Research        | `/research/*`        | Literature review, paper summaries, and baseline comparisons  |
| Capability Maps | `/maps/*`            | Functional and non-functional capability matrices             |
| Architecture    | `/architecture/*`    | System diagrams, component specs, and data-flow documentation |
| Diagrams        | `/diagrams/*`        | Visual reference for all major subsystems                     |
| ADRs            | ADR log              | Architecture Decision Records for every significant choice    |
| Glossary        | `/overview/glossary` | Canonical terminology and definitions                         |

## Dependencies

Phase 0 has no upstream phase dependencies. It is the root of the dependency graph. All subsequent phases depend on its outputs.

## Key Tasks

Track Phase 0 work in the project task registry:

* [Project Tasks](/project/tasks)

Typical Phase 0 tasks include:

1. Literature review and paper annotation
2. Stakeholder interviews and requirement gathering
3. Draft system context and container diagrams
4. Write and ratify ADR-001 through ADR-00N
5. Build Mintlify documentation skeleton and navigation
6. Conduct consistency audit and terminology review

## Risks

* **Scope creep in documentation**: Without a boundary, Phase 0 can expand indefinitely. Mitigate by time-boxing each deliverable.
* **Stale decisions**: ADRs may become outdated before implementation begins. Mitigate by scheduling a mid-Phase 1 review of all ADRs.
* **Inconsistent terminology**: Multiple authors may introduce divergent vocabulary. Mitigate by enforcing the glossary as the single source of truth.

See the full risk register for tracked items and mitigations:

* [Risk Register](/risk/risk-register)

## Quality Gate

Phase 0 is complete when the following checklist is fully satisfied:

* [ ] Every canonical component name appears in the glossary with a definition
* [ ] Every ADR has a status of "Accepted" or "Superseded"
* [ ] All `/architecture/*` pages cross-link to related `/research/*` pages where appropriate
* [ ] Consistency audit report lists zero unresolved terminology conflicts
* [ ] At least one senior engineer has approved the architecture overview
* [ ] Diagrams in `/diagrams/*` use consistent notation and are exportable

## Roadmap Position

The diagram below shows Phase 0 at the start of the EMEP roadmap. It feeds every downstream phase.

```mermaid theme={null}
flowchart LR
    P0["<b>Phase 0</b><br/>Research + Architecture + Documentation"]:::current
    P1["Phase 1<br/>Model Registry + Compatibility"]
    P2["Phase 2<br/>Basic Merge Engine"]
    P3["Phase 3<br/>Advanced Merge Strategies"]
    P4["Phase 4<br/>Evaluation + Benchmarking"]
    P5["Phase 5<br/>Evolution Engine"]
    P6["Phase 6<br/>Quantization + Inference"]
    P7["Phase 7<br/>Offline Deployment"]
    P8["Phase 8<br/>Enterprise Pilot"]
    P9["Phase 9<br/>Optional RAG"]

    P0 --> P1 --> P2 --> P3 --> P4 --> P5 --> P6 --> P7 --> P8 --> P9

    classDef current fill:#e1f5fe,stroke:#01579b,stroke-width:2px
    classDef future fill:#f5f5f5,stroke:#9e9e9e,stroke-width:1px
    class P1,P2,P3,P4,P5,P6,P7,P8,P9 future
```