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**Table of Contents**

- [ggen v3 Implementation Roadmap](#ggen-v3-implementation-roadmap)
  - [Overview](#overview)
  - [Phase 1: Foundation - Ontology Design (Weeks 1-4)](#phase-1-foundation---ontology-design-weeks-1-4)
    - [Week 1: Domain Model & Core Types](#week-1-domain-model--core-types)
    - [Week 3: Projections, Tests, Deployment](#week-3-projections-tests-deployment)
  - [Phase 2: Template & Projection System (Weeks 5-8)](#phase-2-template--projection-system-weeks-5-8)
    - [Week 5-6: Core Templates (π_core, π_domain, π_tests)](#week-5-6-core-templates-%CF%80_core-%CF%80_domain-%CF%80_tests)
    - [Week 8: Documentation & Deployment Templates](#week-8-documentation--deployment-templates)
    - [Week 11: Testing & Verification](#week-11-testing--verification)
  - [Post-Release (Q1-Q2 2026)](#post-release-q1-q2-2026)
    - [v3.0.0-beta (4 weeks after alpha)](#v300-beta-4-weeks-after-alpha)
    - [v3.0.0 final (8 weeks after alpha)](#v300-final-8-weeks-after-alpha)
    - [v3.1.0 (3 months after v3.0)](#v310-3-months-after-v30)
  - [Success Metrics Summary](#success-metrics-summary)
  - [Risk Register & Mitigation](#risk-register--mitigation)
  - [Conclusion](#conclusion)

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# ggen v3 Implementation Roadmap

**Status**: PLANNING
**Target Release**: v3.0.0-alpha (Q1 2026)
**Full Release**: v3.0.0 (Q2 2026)

---

## Overview

This document breaks down the 12-week ggen v3 rewrite into actionable phases with concrete deliverables, success criteria, and risk mitigations.

---

## Phase 1: Foundation - Ontology Design (Weeks 1-4)

**Goal**: Create a complete RDF ontology that describes ggen's current structure and capabilities.

### Week 1: Domain Model & Core Types

**Deliverable**: `ontologies/ggen_v3_core.ttl` (part 1 of 4)

**Tasks**:
```
[ ] Define ggen:Crate class
    - name: String
    - version: String
    - description: String
    - dependencies: [Crate] (links to other crates)
    - modules: [Module]
    - visibility: {public, private}
    - examples: [ExampleProject]

[ ] Define ggen:Module class
    - name: String
    - path: String (e.g., "src/graph")
    - parent: Crate (inverse: crate:modules)
    - exports: [Type | Trait | Function]
    - internal: [Type | Function] (not exported)
    - tests: [TestModule]
    - documentation: String

[ ] Define ggen:Type class (abstract base)
    - name: String
    - module: Module
    - visibility: {public, private}
    - documentation: String
    - constraints: [Constraint]
    - properties: {LanguageCode → MappedType}

    [ ] Subclass: ggen:Struct
         - fields: [Field]
         - derives: [String] (e.g., "Serialize", "Debug")
         - implements: [Trait]

    [ ] Subclass: ggen:Enum
         - variants: [EnumVariant]
         - derives: [String]

    [ ] Subclass: ggen:Trait
         - methods: [TraitMethod]
         - bounds: [GenericBound]

    [ ] Subclass: ggen:Union

[ ] Define ggen:Field class
    - name: String
    - type: XsdType | ComplexType
    - visibility: {pub, pub(crate), private}
    - default: Any
    - isRequired: Boolean
    - constraints: [Constraint]

[ ] Define ggen:Function class
    - name: String
    - module: Module
    - parameters: [Parameter]
    - returnType: Type
    - isAsync: Boolean
    - testCoverage: Float (0.0-1.0)
    - documentation: String

[ ] Test queries:
    $ ggen graph query --sparql "
      SELECT ?crateName ?moduleCount WHERE {
        ?crate a ggen:Crate ;
               ggen:name ?crateName .
        BIND(COUNT(?m) as ?moduleCount)
        WHERE {
          ?crate ggen:modules ?m .
        }
      }
    "
    # Expected: ggen-core, ggen-cli, ggen-marketplace, etc.

[ ] SPARQL test: "Get all public types"
    [ ] SPARQL test: "Get all async functions"
    [ ] SPARQL test: "Get all types with deprecated constraint"

**Success Criteria**:
- ✅ Ontology is valid RDF (validates with rapper)
- ✅ Can query all current ggen v2 crates
- ✅ Can enumerate all modules in each crate
- ✅ Can identify all public/private visibility
- ✅ 5+ SPARQL queries work and return expected results

**Risk**: Domain model misses important details → Iteration required
**Mitigation**: 2-day design review with team; document all assumptions

---

### Week 2: CLI & Marketplace Model

**Deliverable**: `ontologies/ggen_v3_core.ttl` (part 2 of 4)

**Tasks**:
```
[ ] Define ggen:CliCommand class
    - noun: String (e.g., "project", "template", "marketplace")
    - verb: String (e.g., "gen", "new", "search")
    - description: String
    - arguments: [Argument]
    - flags: [Flag]
    - subcommands: [CliCommand] (recursive)
    - implementation: Module (which module implements this)
    - tests: [IntegrationTest]
    - examples: [String] (example invocations)
    - outputFormat: {text, json, table}
    - isDeprecated: Boolean

[ ] Define ggen:Argument class
    - name: String
    - type: Type (String, Path, Enum, etc.)
    - isRequired: Boolean
    - isVariadic: Boolean
    - description: String
    - defaultValue: Any
    - validation: [Constraint]

[ ] Define ggen:Flag class
    - shortForm: String (e.g., "-f")
    - longForm: String (e.g., "--force")
    - type: Type (Boolean, String, Integer)
    - isRequired: Boolean
    - description: String

[ ] Define ggen:Package class
    - name: String (e.g., "sector-observability-8020")
    - version: String
    - namespace: String (e.g., "io.ggen.observability")
    - description: String
    - author: String
    - license: String
    - homepage: String
    - repository: String
    - dependencies: [Package] (package dependencies)
    - marketplace_dependencies: [Guard | Template]
    - sector: String (healthcare, observability, microservice, etc.)

[ ] Define ggen:Guard class (abstract)
    - name: String (e.g., "Guard8020Coverage")
    - description: String
    - appliesTo: {Package | Type | Module} (what can this be applied to)
    - checks: [Check]
    - scoringRules: [ScoringRule]
    - threshold: Integer (min score to pass)

[ ] Define ggen:Check class
    - name: String
    - implementation: Module (which code implements check)
    - isAutomatic: Boolean (can be run without user input)
    - isBlocking: Boolean (fails if violated)
    - documentation: String

[ ] Define ggen:ScoringRule class
    - criterion: String (e.g., "documentation_completeness")
    - maxPoints: Integer (max points for this criterion)
    - algorithm: String (how to calculate score)

[ ] Define ggen:LlmProvider class
    - name: String (e.g., "OpenAI")
    - endpoint: String (API endpoint URL)
    - models: [LlmModel]
    - authentication: AuthMethod (ApiKey, OAuth2)
    - streaming: Boolean
    - costPer1kTokens: Float

[ ] Define ggen:LlmModel class
    - name: String (e.g., "gpt-4o")
    - provider: LlmProvider
    - contextWindow: Integer (max tokens)
    - trainingDataCutoff: Date
    - isProgrammingSpecialized: Boolean
    - costPerMtokInput: Float
    - costPerMtokOutput: Float

[ ] Define all 32 current CLI commands
    $ ggen cli list-commands  # to get complete list

    [ ] ai generate-ontology
    [ ] ai chat
    [ ] ai analyze
    [ ] ai refactor-suggestion

    [ ] template generate-rdf
    [ ] template list
    [ ] template lint

    [ ] project new
    [ ] project gen
    [ ] project watch

    [ ] marketplace search
    [ ] marketplace install
    [ ] marketplace publish
    [ ] marketplace info

    [ ] graph load
    [ ] graph query
    [ ] graph export
    [ ] graph diff

    [ ] hook create
    [ ] hook list
    [ ] hook monitor

    [ ] utils doctor
    [ ] utils update

    [ ] (Add any missing commands)

[ ] SPARQL tests:
    [ ] "Get all CLI commands by noun"
    [ ] "Get all commands that operate on packages"
    [ ] "Get all commands that execute SPARQL queries"

**Success Criteria**:
- ✅ All 32 CLI commands defined and queryable
- ✅ Package structure matches actual marketplace packages
- ✅ Guards match production readiness scoring system
- ✅ LLM providers can be queried to generate client code
- ✅ 5+ SPARQL queries work as expected

---

### Week 3: Projections, Tests, Deployment

**Deliverable**: `ontologies/ggen_v3_core.ttl` (part 3 of 4)

**Tasks**:
```
[ ] Define ggen:Projection class (abstract)
    - name: String (e.g., "π_core", "π_cli")
    - sparqlQuery: String (SPARQL 1.1 query)
    - templateFile: String (path to .tmpl)
    - targetScope: String (which files/modules this projects to)
    - frequency: {OnChange, OnDemand, Scheduled}
    - description: String

[ ] Subclass: ggen:ModuleProjection (π_core family)
    - generatesCargotoml: Boolean
    - generatesModuleFile: Boolean
    - preservesUserCode: Boolean

[ ] Subclass: ggen:TypeProjection (π_domain family)
    - targetLanguages: [String] (Rust, TypeScript, Python, ...)
    - generates: {StructDefinition | InterfaceDefinition | ClassDefinition}
    - generatesSerialization: Boolean

[ ] Subclass: ggen:CliProjection (π_cli family)
    - generatesCommandParser: Boolean
    - generatesHelpText: Boolean
    - generatesIntegrationTest: Boolean

[ ] Subclass: ggen:TestProjection
    - testType: {Unit | Integration | Property | E2E | BDD}
    - codegenStrategy: String (how to generate test scaffolds)
    - expectedCoverage: Float (target % coverage)

[ ] Subclass: ggen:DocumentationProjection
    - documentationType: {ApiReference | Architecture | Tutorial | HowTo}
    - format: {Markdown | Html | Pdf}
    - autoupdate: Boolean

[ ] Define ggen:TestCase class
    - name: String
    - module: Module
    - testType: {Unit | Integration | E2E | BDD}
    - subject: Type | Function | Command
    - expectedBehavior: String
    - givenConditions: String (Arrange phase)
    - action: String (Act phase)
    - assertion: String (Assert phase)

[ ] Define ggen:Constraint class (abstract)
    - name: String
    - target: Type | Field | Parameter
    - rule: String (human-readable)
    - isMandatory: Boolean
    - documentation: String

[ ] Subclass: ggen:RangeConstraint
    - minInclusive: Number
    - maxInclusive: Number

[ ] Subclass: ggen:PatternConstraint
    - regex: String

[ ] Subclass: ggen:EnumConstraint
    - allowedValues: [Any]

[ ] Subclass: ggen:UniqueConstraint
    - fields: [String]

[ ] Subclass: ggen:NotNullConstraint

[ ] Define ggen:DeploymentTarget class
    - name: String (Docker, Kubernetes, AWS Lambda, etc.)
    - containerFormat: String (OCI, Docker, WASM)
    - configuration: String (YAML, JSON)
    - environmentVariables: [EnvVar]

[ ] Define ggen:MaturityLevel class
    - level: {Alpha, Beta, Stable, Production, Enterprise}
    - minReadinessScore: Integer (0-100)
    - requiredChecks: [Check]
    - supportCommitment: String

[ ] Define ggen:ValidationReceipt class
    - packageName: String
    - version: String
    - timestamp: DateTime
    - checksPerformed: [Check]
    - checksPassedCount: Integer
    - checksTotalCount: Integer
    - guardsApplied: [Guard]
    - finalScore: Integer
    - maturityLevel: MaturityLevel
    - signature: String (ML-DSA signed)
    - expiresAt: DateTime

**Success Criteria**:
- ✅ All projection families defined
- ✅ Can query "which projection handles CLI commands?"
- ✅ All test patterns represented
- ✅ Constraints match Rust type system
- ✅ Deployment targets queryable by container type

---

### Week 4: Refinement & Validation

**Deliverable**: Complete `ontologies/ggen_v3_core.ttl` + comprehensive SPARQL test suite

**Tasks**:
```
[ ] Compile all 4 parts of ontology into single file
    [ ] Remove redundancies
    [ ] Verify no circular definitions
    [ ] Ensure all inverse relations are symmetric
    [ ] Check that all classes used in constraints are defined

[ ] Create comprehensive SPARQL test suite (25+ queries):
    [ ] System structure queries (10+ queries)
        [ ] "Get all crates"
        [ ] "Get all public modules"
        [ ] "Get all types in ggen-core"
        [ ] "Get all async functions"
        [ ] "Find all types with deprecated constraint"
        [ ] "Get module dependency graph"
        [ ] "Find circular dependencies (if any)"
        [ ] "Count test coverage by module"
        [ ] "List all private types"
        [ ] "Get all trait implementations"

    [ ] CLI-related queries (5+ queries)
        [ ] "Get all commands by noun"
        [ ] "Get all flags used across all commands"
        [ ] "Find commands that operate on packages"
        [ ] "Get all commands that produce JSON output"
        [ ] "List deprecated commands"

    [ ] Marketplace queries (5+ queries)
        [ ] "Get all packages in 'observability' sector"
        [ ] "Get packages with is_8020 = true"
        [ ] "Find all guards applied to packages"
        [ ] "Calculate average readiness score by sector"
        [ ] "Find packages with unresolved dependencies"

    [ ] Projection queries (5+ queries)
        [ ] "Get all projections that generate Rust code"
        [ ] "Get projections used by π_cli"
        [ ] "Find projections that modify public APIs"
        [ ] "List all SPARQL queries used in projections"
        [ ] "Get projection execution order (dependency graph)"

[ ] Peer review with team
    [ ] Does ontology capture 90%+ of ggen v2?
    [ ] Are SPARQL queries realistic (not contrived)?
    [ ] Can someone unfamiliar understand it?
    [ ] Are naming conventions consistent?
    [ ] Any gaps or missing entities?

[ ] Iterate based on feedback

[ ] Create documentation:
    [ ] Entity relationship diagram (text/ASCII art)
    [ ] Class hierarchy with examples
    [ ] SPARQL query cookbook (examples)
    [ ] Glossary of terms

**Success Criteria**:
- ✅ Complete ontology file (7000+ lines TTL)
- ✅ All SPARQL queries pass
- ✅ Ontology validated by RDF validators (Shacl, etc.)
- ✅ 90%+ team agreement that ontology is complete
- ✅ Can generate all 32 CLI commands from ontology
- ✅ Can generate all marketplace validations from ontology

---

## Phase 2: Template & Projection System (Weeks 5-8)

**Goal**: Build SPARQL-driven templates that generate all ggen code.

### Week 5-6: Core Templates (π_core, π_domain, π_tests)

**Deliverable**: Working template system + test validation

**Tasks**:
```
[ ] Create template architecture:
    templates/
    ├── π_core/
    │   ├── crate_cargo_toml.tmpl
    │   ├── module_scaffold.tmpl
    │   ├── module_mod_rs.tmpl
    │   └── lib_rs.tmpl
    ├── π_domain/
    │   ├── struct_def.tmpl
    │   ├── enum_def.tmpl
    │   ├── trait_def.tmpl
    │   ├── impl_serialize.tmpl
    │   └── impl_deserialize.tmpl
    ├── π_tests/
    │   ├── unit_test_scaffold.tmpl
    │   ├── integration_test_scaffold.tmpl
    │   ├── property_test_scaffold.tmpl
    │   └── bdd_step_definition.tmpl
    └── ... (others for π_cli, π_marketplace, etc.)

[ ] Implement π_core templates:
    [ ] crate_cargo_toml.tmpl
        Query: SELECT ?crateName ?version ?dependencies WHERE { ... }
        Output: Cargo.toml with all dependencies

        Frontmatter example:
        ```yaml
        query: |
          SELECT ?crateName ?version ?dependency
          WHERE {
            ?crate a ggen:Crate ;
                   ggen:name ?crateName ;
                   ggen:version ?version ;
                   ggen:dependencies ?dep .
            ?dep ggen:name ?dependency .
          }
        target: "crates/{{ crateName }}/Cargo.toml"
        ```

    [ ] module_scaffold.tmpl
        Query: SELECT ?moduleName ?moduleFile ?exports
        Output: src/{{ moduleName }}/mod.rs with public re-exports

    [ ] lib_rs.tmpl
        Query: SELECT ?moduleName ?isPublic
        Output: src/lib.rs with public module declarations

    [ ] Verify generated files compile:
        $ cd crates/ggen-core
        $ cargo check
        $ # Should compile without warnings

[ ] Implement π_domain templates:
    [ ] struct_def.tmpl
        Generate Rust struct from ggen:Struct entity
        Include: fields, derives, documentation, visibility

    [ ] impl_serialize.tmpl
        Generate #[derive(Serialize)] impl
        Handle optional fields, custom serialization

    [ ] impl_deserialize.tmpl
        Generate #[derive(Deserialize)] impl
        Validation logic from constraints

    [ ] Test: Generate Struct("Project") from ontology
        Verify it matches hand-written Project struct

[ ] Implement π_tests templates:
    [ ] unit_test_scaffold.tmpl
        For each ggen:TestCase, generate:
        ```rust
        #[test]
        fn test_{{ testName }}() {
            // Arrange
            {{ arrangeCode }}

            // Act
            {{ actCode }}

            // Assert
            {{ assertion }}
        }
        ```

    [ ] integration_test_scaffold.tmpl
        Generate E2E tests from commands
        Example: "Test ggen project gen --ontology X works"

    [ ] Validate generated tests run:
        $ cargo test --test '*'
        $ # All should pass or be reasonable skips

[ ] Generator validation:
    [ ] "Generate ggen-core crate"
    [ ] "Compare generated vs hand-written (v2 baseline)"
    [ ] "Identify differences (optimizations, edge cases)"
    [ ] "Integrate hand-written optimizations into templates"

**Success Criteria**:
- ✅ π_core generates valid Cargo.toml files
- ✅ π_domain generates valid Rust structs with derives
- ✅ π_tests generates compilable test scaffolds
- ✅ Generated code compiles without errors
- ✅ Generated tests run (at least some pass)
- ✅ <10% diffs when compared to hand-written v2

---

### Week 7: CLI & Marketplace Templates

**Deliverable**: π_cli, π_marketplace templates + working generator

**Tasks**:
```
[ ] Implement π_cli templates:
    [ ] command_module.tmpl
        For each ggen:CliCommand:
        - Generate noun/verb subcommand parser
        - Generate argument/flag handling
        - Generate help text

        Example output:
        ```rust
        pub mod project {
            pub fn gen(args: GenArgs) -> Result<()> {
                // Implementation
            }
        }
        ```

    [ ] clap_parser.tmpl
        Generate clap::Command structure from ontology
        All 32 commands generated from TTL

    [ ] integration_test.tmpl
        Generate test for each CLI command
        Ensure command parses correctly
        Test actual execution

    [ ] Generate all 32 CLI commands
    [ ] Verify help text works: ggen --help
    [ ] Verify command dispatch works: ggen project gen --help

[ ] Implement π_marketplace templates:
    [ ] guard_impl.tmpl
        For each ggen:Guard:
        Generate Rust impl
        ```rust
        pub struct {{ guardName }} { ... }
        impl Guard for {{ guardName }} {
            fn check(&self, package: &Package) -> Result<ValidationReceipt> {
                // Generated check logic
            }
        }
        ```

    [ ] scoring_calculator.tmpl
        Generate scoring logic from ScoringRules
        Calculate readiness score (0-100)

    [ ] validation_receipt.tmpl
        Generate signed receipt JSON
        Include timestamp, check results, signature

    [ ] Generate Guard8020Coverage
    [ ] Generate GuardChatmanCompliant
    [ ] Generate GuardTelemetryComplete

    [ ] Test guards on real packages:
    [ ] "Run guard against sector-observability-8020"
    [ ] "Generate and verify receipt signature"

[ ] Validate CLI + Marketplace integration:
    [ ] ggen marketplace search --8020
        (should work with generated guards)

    [ ] ggen marketplace install sector-observability-8020
        (should validate with generated guards)

**Success Criteria**:
- ✅ All 32 CLI commands compile and run
- ✅ Help text is complete and accurate
- ✅ All commands dispatch to correct module
- ✅ Guards execute successfully
- ✅ Validation receipts are correctly formatted and signed
- ✅ Marketplace search/install work with generated code

---

### Week 8: Documentation & Deployment Templates

**Deliverable**: π_docs, π_deployment templates + full generation pipeline

**Tasks**:
```
[ ] Implement π_docs templates:
    [ ] api_reference.tmpl
        For each ggen:Type, ggen:Function:
        Generate API documentation
        Include examples, constraints, visibility

    [ ] architecture_overview.tmpl
        Generate architecture.md from ontology
        Include crate structure, module organization
        List public APIs

    [ ] getting_started.tmpl
        Generate tutorial from marketplace package structure

    [ ] migration_guide.tmpl
        Generate v2 -> v3 migration instructions
        List breaking changes, mapping table

    [ ] Generate API docs for all crates
    [ ] Generate architecture documentation
    [ ] Verify markdown is valid

[ ] Implement π_deployment templates:
    [ ] dockerfile.tmpl
        Generate Dockerfile from deployment target spec
        Handle build stages, dependencies

    [ ] kubernetes_manifest.tmpl
        Generate K8s Deployment/Service specs

    [ ] github_workflow.tmpl
        Generate CI/CD workflow
        Build, test, deploy steps

    [ ] docker-compose.tmpl
        Generate local development docker-compose

    [ ] Generate Docker files
    [ ] Test: docker build -f Dockerfile . (should work)
    [ ] Generate K8s manifests
    [ ] Validate YAML format

[ ] Full generation pipeline:
    [ ] Command: ggen project gen ggen-v3 --ontology ggen_v3_core.ttl

    [ ] Execute all projections:
        π_core     → crates/*/Cargo.toml, src/*/lib.rs
        π_domain   → crates/*/src/types.rs, derives
        π_cli      → crates/ggen-cli/src/commands/
        π_marketplace → crates/ggen-marketplace/src/guards.rs
        π_ai       → crates/ggen-ai/src/providers/
        π_tests    → tests/unit/*.rs, tests/integration/*.rs
        π_docs     → docs/API.md, docs/architecture.md
        π_deployment → Dockerfile, docker-compose.yml, .github/workflows/

    [ ] Output directory structure matches ggen-v3 layout
    [ ] All code compiles: cargo build --release
    [ ] All tests pass: cargo test

**Success Criteria**:
- ✅ π_docs generates valid markdown
- ✅ π_deployment generates valid Docker/K8s YAML
- ✅ Full pipeline execution generates 95%+ of codebase
- ✅ Generated code compiles
- ✅ Generated code passes all tests
- ✅ <10% lines of code are hand-written (manual optimizations)

---

## Phase 3: Cutover & Validation (Weeks 9-12)

### Week 9-10: Generation & Comparison

**Deliverable**: Detailed diff report, hand-written optimization catalog

**Tasks**:
```
[ ] Generate complete ggen-v3 codebase:
    $ ggen project gen ggen-v3 --ontology ggen_v3_core.ttl --output /tmp/ggen-v3-generated

[ ] Compare generated-v3 vs hand-written-v2:
    [ ] Line-by-line diff
    [ ] Categorize every difference:
        - ✅ Identical (generated matches hand-written)
        - ⚙️ Optimization (hand-written is faster/better)
        - 🔧 Feature gap (generated missing something)
        - 📝 Style difference (formatting, comments)
        - 🚀 Enhancement (generated has improvement)

    [ ] Create spreadsheet:
        File | Lines Diff | Category | Notes
        src/graph/mod.rs | 10 | Optimization | hand-written uses slice API
        src/cli/dispatch.rs | 0 | Identical | perfect match!

    [ ] Quantify results:
        Total diff lines: X
        Optimization opportunities: Y
        Feature gaps: Z
        Style only: W

[ ] Integrate optimizations:
    [ ] For each "Optimization" diff:
        [ ] Update template to include the optimization
        [ ] Re-generate and verify
        [ ] Test that optimization doesn't break anything

    [ ] For each "Feature gap":
        [ ] Decide: fix template or keep hand-written?
        [ ] If template: what SPARQL query is missing?
        [ ] Update ontology/template accordingly

[ ] Identify remaining hand-written code:
    [ ] List all lines NOT generated
    [ ] Assess if they're worth templating
    [ ] Document decision for each file

[ ] Create optimization catalog:
    [ ] Pattern: "Slice API for memory efficiency"
        Where: graph/queries.rs line 234
        Optimization: Reduces allocations by 30%
        Action: Add to template for future SPARQL module

    [ ] Pattern: "Custom Display impl instead of derived"
        Where: marketplace/score.rs
        Optimization: Human-readable output for scores
        Action: Add custom display template

    [ ] (Continue for all 20-30 optimizations found)

**Success Criteria**:
- ✅ Complete diff report generated
- ✅ <5% diffs are unexplained
- ✅ All optimizations catalogued
- ✅ Decision made for each feature gap
- ✅ 95%+ confidence that v3 generated code is sound

---

### Week 11: Testing & Verification

**Deliverable**: v3.0.0-alpha ready for release

**Tasks**:
```
[ ] Comprehensive testing suite:
    [ ] Unit tests
        $ cargo test --lib
        All tests must pass
        Coverage: >85%

    [ ] Integration tests
        $ cargo test --test '*'
        Test each crate's public API
        Test marketplace integration

    [ ] End-to-end tests
        $ cargo test --test chicago_tdd_e2e
        782-line test: real scenarios, no mocks
        2/3 scenarios must pass (same as v2)

    [ ] CLI tests
        $ ggen --version (works)
        $ ggen ai generate-ontology --prompt "test" (works)
        $ ggen project gen . (works)
        $ ggen marketplace search (works)
        $ ggen graph query (works)
        All 32 commands functional

    [ ] Performance benchmarks
        $ cargo bench
        v3 should be ≥ v2 performance
        No significant slowdown

    [ ] Documentation tests
        $ cargo test --doc
        All examples in comments must compile

[ ] Feature parity matrix:
    Feature | v2 Status | v3 Status | Notes
    AI generation | ✅ Working | ✅ Generated | ggen-ai from π_ai
    Graph operations | ✅ Working | ✅ Generated | ggen-core from π_core
    CLI commands | ✅ 32 cmds | ✅ 32 generated | All from ontology
    Marketplace | ✅ 76 pkgs | ✅ 76 support | Guards from π_market
    Hooks | ✅ Working | ✅ Generated | From lifecycle ontology

    (Verify every feature works)

[ ] Code quality checks:
    [ ] No unsafe code in generated files (except explicit markers)
    [ ] No unwrap/expect except in tests
    [ ] No panics in production paths
    [ ] All warnings: denied
    [ ] Clippy: all passing
    [ ] Formatting: all consistent (rustfmt)
    [ ] Documentation: all public items documented
    [ ] MIRI: no undefined behavior detected
    [ ] Tests use proptest for property-based validation

[ ] Build reproducibility:
    [ ] Clean rebuild: rm -rf target && cargo build
    [ ] Identical hash: sha256sum target/release/ggen == stored_hash
    [ ] Docker build: docker build . produces same image hash

[ ] Security audit:
    [ ] Dependencies: cargo audit (no vulnerabilities)
    [ ] Unsafe code review: examine all unsafe {} blocks
    [ ] Cryptography: ML-DSA signatures verified
    [ ] Validation: All user input sanitized

**Success Criteria**:
- ✅ All unit tests pass
- ✅ All integration tests pass
- ✅ E2E test passes 2/3 scenarios (same as v2)
- ✅ All 32 CLI commands functional
- ✅ Performance ≥ v2
- ✅ Feature parity achieved
- ✅ Build is reproducible
- ✅ No security issues found
- ✅ Clippy: all passing
- ✅ Zero unsafe code in generated sections

---

### Week 12: Release & Documentation

**Deliverable**: v3.0.0-alpha published, comprehensive migration guide

**Tasks**:
```
[ ] Release preparation:
    [ ] Update VERSION = "3.0.0-alpha.1"
    [ ] Update CHANGELOG.md with all changes
    [ ] Create release notes (1000+ words):
        - What is v3?
        - Why self-hosting matters
        - What's new
        - Breaking changes
        - Migration path
        - Known limitations

    [ ] Tag: git tag -a v3.0.0-alpha.1 -m "ggen v3 alpha"
    [ ] Push: git push origin v3.0.0-alpha.1

[ ] Publish to crates.io:
    [ ] cargo publish --dry-run
    [ ] Verify all crates publish successfully
    [ ] cargo publish (for ggen-cli, ggen-core, etc.)

[ ] Build platform-specific binaries:
    [ ] macOS (Intel + Apple Silicon)
    [ ] Linux (x86_64, aarch64)
    [ ] Windows (x86_64)
    [ ] Upload to GitHub Releases

[ ] Publish Docker image:
    [ ] Build: docker build -t ggen:v3.0.0-alpha.1 .
    [ ] Tag: docker tag ggen:v3.0.0-alpha.1 ggen:latest
    [ ] Push: docker push ggen:v3.0.0-alpha.1

[ ] Create comprehensive documentation:
    [ ] MIGRATION_v2_to_v3.md (2000+ words)
        ✓ What changed (code generation now primary)
        ✓ Breaking changes (if any)
        ✓ Step-by-step migration guide
        ✓ FAQ
        ✓ Timeline for v2 EOL
        ✓ Support contacts

    [ ] ONTOLOGY_REFERENCE.md
        ✓ Entity relationship diagram
        ✓ Class definitions with examples
        ✓ Property reference
        ✓ SPARQL query cookbook
        ✓ Common patterns

    [ ] EXTENDING_GGEN.md
        ✓ How to modify ontology
        ✓ How to add custom projections
        ✓ How to create new templates
        ✓ Contribution guidelines

    [ ] DEVELOPER_GUIDE.md
        ✓ Regenerating ggen from ontology
        ✓ Running the generation pipeline
        ✓ Testing generated code
        ✓ Performance profiling

    [ ] Update README.md
        ✓ Mention v3 (self-hosting!)
        ✓ Link to new docs
        ✓ Update examples for ontology-first workflow

[ ] Community engagement:
    [ ] Write blog post: "ggen v3: Eating Our Own Dogfood"
        ✓ Technical details
        ✓ Performance numbers
        ✓ Before/after comparison
        ✓ Vision for future

    [ ] Create YouTube demo (5-10 min)
        ✓ Generate ggen from ontology
        ✓ Show C4 diagrams
        ✓ Compare to v2 workflow

    [ ] Post on:
        ✓ Reddit r/rust, r/codegeneration
        ✓ HackerNews
        ✓ Twitter/X
        ✓ Discourse forum (if exists)

    [ ] Prepare for GitHub Discussions questions

[ ] Gather feedback:
    [ ] Create feedback form
    [ ] Monitor issue tracker
    [ ] Schedule community calls (if interested)

**Success Criteria**:
- ✅ v3.0.0-alpha.1 published to crates.io
- ✅ GitHub Release created with artifacts
- ✅ Docker image published
- ✅ Comprehensive documentation complete
- ✅ Migration guide reviewed by team
- ✅ Community informed and engaged
- ✅ Setup issue tracker for feedback

---

## Post-Release (Q1-Q2 2026)

### v3.0.0-beta (4 weeks after alpha)
```
[ ] Address alpha feedback
[ ] Performance optimizations
[ ] Additional templates for edge cases
[ ] Extended documentation
```

### v3.0.0 final (8 weeks after alpha)
```
[ ] Feature complete
[ ] Full test coverage
[ ] Performance benchmarked & optimized
[ ] Ready for production use
[ ] v2 -> v3 migration tooling included
```

### v3.1.0 (3 months after v3.0)
```
[ ] Autonomous ontology evolution enabled
[ ] Sector bundles v2 (healthcare, finance, etc.)
[ ] AI-powered code improvement suggestions
[ ] Performance optimizations based on telemetry
```

---

## Success Metrics Summary

| Metric | Target | Measurement |
|--------|--------|-------------|
| **Ontology Completeness** | >95% | Can query 90+ different properties/relations |
| **Generation Coverage** | >95% | <5% hand-written code in generated codebase |
| **Build Time** | <2s | Time to regenerate entire codebase |
| **Feature Parity** | 100% | All v2 features work identically in v3 |
| **Performance** | v2≤v3≤v2+5% | Benchmarks show no regression |
| **Code Quality** | Zero unsafe | No `unsafe {}` in generated code |
| **Test Coverage** | >85% | All major paths covered |
| **Documentation** | Complete | API docs, architecture, migration guide done |
| **Reproducibility** | 100% | Same ontology → identical output hash |
| **Community Adoption** | 50+ stars in week 1 | Measured GitHub interest |

---

## Risk Register & Mitigation

| Risk | Probability | Impact | Mitigation |
|------|-------------|--------|-----------|
| Ontology design wrong | Medium | Critical | Weeks 1-4 design review; iterate schema |
| Generator can't reach 95% | Medium | High | Define "acceptable hand-written %" & document |
| Performance regression | Low | Medium | Benchmark early; optimize hot paths |
| Migration burden high | Low | Medium | Comprehensive tooling & documentation |
| Community skepticism | Low | Medium | Blog posts & demos showing benefit |
| Breaking changes | Low | Medium | Careful v2→v3 transition strategy |

---

## Conclusion

ggen v3 is a **12-week transformation** that proves the projection model through self-hosting. Every phase has clear deliverables, testable success criteria, and fallback plans.

The result: ggen becomes the world's first self-hosting, ontology-driven code generator—demonstrating that this approach is production-grade and ready for the world.

**Next Step**: Start Week 1 - Ontology Design Sprint

---

**Document Version**: 1.0
**Created**: 2025-11-17
**Branch**: `claude/plan-ggen-v3-rewrite-01PyJAjvvvwdVWwD6wickodF`
