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PTSIP — Primary Lifecycle Ownership and Responsibility Isolation Policy

Status: Tool 0.3.8a2 repository-namespace stabilization prerelease — publication pending
Tool/package version: 0.3.8a2
Project Profile contract: pp.1.02
Specification family: 0.3.7-draft
Bound immutable Specification revision: 3c47816770d194ae42f98faedc911d980db0e62a
License authority: License-Authority/ (closed authority boundary; references elsewhere are non-authoritative)
License effective time: 2026-09-15T00:00:00Z (UTC)
Localized documentation: README.md is canonical. Localized README files are regenerated on main by the self-hosted Argos Translate workflow; if a translation conflicts with this file, this file governs.

PTSIP is a project-defined architecture policy for separating project responsibilities by primary lifecycle ownership while preserving explicit architecture intent, lifecycle isolation, reproducible conformance, verification-purpose separation, and multi-environment decision consistency.

Purpose precedes reuse. Classify a coherent responsibility by why it exists and which lifecycle owns it before optimizing for code sharing.

Tool 0.3.8a2 is a repository-namespace stabilization prerelease built on the already-published 0.3.8a1 bridge and the same frozen Specification binding. It preserves the proposed-candidate bridge while establishing .ptsip/ as the canonical repository-local ownership boundary for PTSIP-managed contracts, registries, configuration, task/operation metadata, and execution state. Canonical repository indexes use JSON. This release reserves Task and runtime namespaces but does not claim a completed generic Task Engine, Go runtime, or Tool 0.4.0 capability-recovery implementation.

Primary lifecycle ownership

Canonical Tool 0.3.8a2 classifications remain exactly:

UNKNOWN, CONFLICT, INCOMPLETE, PENDING, confidence values, and migration states are workflow/evaluation states, not additional classifications.

Tool 0.3.5 compatibility boundary

Tool 0.3.5 historically used:

PRODUCT
TOOLCHAIN
NEUTRAL_CONTRACT

Tool 0.3.8a2 preserves the five-classification model established by Tool 0.3.6. TOOLCHAIN is therefore legacy Tool 0.3.5 input, not a current canonical alias. A legacy Toolchain responsibility may become DEVELOPMENT_TOOLING, DELIVERY, OPERATIONS, or require a split depending on its actual lifecycle ownership. Blind TOOLCHAIN -> DEVELOPMENT_TOOLING rewriting is prohibited.

Tool 0.3.8a2 provides evidence-bound direct current-target migration for explicitly supported historical sources. Migration capability remains separate from repository adoption authority and never turns inference into project intent.

Classification is not path or technology

Classification follows the governing lifecycle obligation, not filename, directory, language, framework, executable status, workflow provider, compilation behavior, runtime duration, test status, or confidence score.

Examples:

Product-specific verification responsibility       -> PRODUCT
Reusable verification framework / test SDK         -> DEVELOPMENT_TOOLING
Product runtime implementation                      -> PRODUCT
Release-unit assembly / publication automation      -> DELIVERY
Post-deployment health or recovery automation       -> OPERATIONS
Independent non-executable shared contract          -> NEUTRAL_CONTRACT

Paths such as tests/, tools/, deploy/, ops/, or .github/workflows/ are evidence context only. They do not become architecture authority.

Responsibility Map v2

Tool 0.3.8a2 uses Responsibility Map v2 as the project-owned architecture declaration model. It keeps several axes independent:

classification
    = primary lifecycle ownership

roles
    = coarse responsibility characteristics

relationships
    = project-owned typed directed semantics

source/derived provenance
    = where declaration/materialized architecture came from

VPMS Verification Purpose
    = why verification exists and what it protects

Canonical roles are:

IMPLEMENTATION
VERIFICATION
AUTOMATION
CONFIGURATION
DOCUMENTATION
GOVERNANCE

Canonical typed relationships are:

IMPORTS
LINKS
LOADS
INVOKES
READS
GENERATES
BUILDS
PACKAGES
PUBLISHES
DEPLOYS
VERIFIES
MANAGES
DOCUMENTS
SPECIFIES
GOVERNS

An associated artifact is a project-owned non-component support surface subordinate to one classified anchor component. It must not be used to hide independently governable executable or lifecycle responsibility.

Explicit, template, and hybrid declarations

Canonical source modes are:

explicit
    repository directly declares the complete map

template
    repository explicitly selects one immutable revision-bound template

hybrid
    repository explicitly selects a template and adds project-owned
    overrides, extensions, or removals

The initial template catalog contains:

python-package-library
python-cli-application
mixed-product-development-delivery

Template selection is explicit. PTSIP does not automatically select a template from repository layout, language, framework detection, manifests, or confidence.

Source declaration and Effective Responsibility Map

All source modes resolve through deterministic, non-authoritative materialization:

Source Project Profile
        |
        v
explicit / template / hybrid
        |
        v
deterministic materialization
        |
        v
Canonical Effective Responsibility Map
        |
        +--> validation / conformance
        +--> clarification / adoption
        +--> narrow VPMS read-only projection

The Source Project Profile remains project-owned architecture authority. Materialization must not select templates, infer ownership, repair invalid architecture, or silently rewrite the source declaration.

The resolved view retains declaration provenance such as:

PROJECT_EXPLICIT
TEMPLATE
PROJECT_OVERRIDE
PROJECT_EXTENSION
PROJECT_REMOVAL

and has deterministic digest identity for reproducibility. Neither provenance nor digest becomes a replacement architecture authority.

Install and use

PTSIP requires Python 3.11 or newer.

Install the latest published release:

python -m pip install PTSIP

Upgrade to the latest published release:

python -m pip install --upgrade PTSIP

Tool 0.3.8a2 is a prerelease. A normal pip install PTSIP may continue to select the latest stable release unless prereleases are explicitly requested.

After publication, install this prerelease explicitly with:

python -m pip install "PTSIP==0.3.8a2"

For source development on this release line:

python -m pip install -e ".[dev]"

Common commands:

ptsip --version
ptsip spec
ptsip doctor .
ptsip inspect .
ptsip pilot .
ptsip adopt --help
ptsip validate .
ptsip clarify .
ptsip gate .
ptsip resolve --help
ptsip conform .

New project-owned profiles are selected through .ptsip/profiles/index.json; the catalog's default_profile resolves the active *.ptsip.yaml resource. Repository-root ptsip.yaml remains a compatibility/migration input, and an explicit --profile path still takes precedence.

Adoption and decision authority

Repository evidence is not architecture authority. Candidate discovery, path names, templates, heuristics, and agent confidence can support review but cannot manufacture project intent.

Canonical Tool 0.3.8a2 explicit adoption facts center on classification as lifecycle ownership authority. New canonical decisions use facts such as:

classification
purpose
shipped
runtime_required
executable

The historical lifecycle_owner field is legacy migration evidence, not a second Tool 0.3.8a2 ownership authority.

Example dry-run:

ptsip adopt . `
  --component tools `
  --classification DEVELOPMENT_TOOLING `
  --purpose "Repository-local generation tooling" `
  --shipped no `
  --runtime-required no `
  --executable yes `
  --json

Apply only after reviewing the planned declaration change:

ptsip adopt . `
  --component tools `
  --classification DEVELOPMENT_TOOLING `
  --purpose "Repository-local generation tooling" `
  --shipped no `
  --runtime-required no `
  --executable yes `
  --apply `
  --json

Prepared writes must reject stale repository/profile state.

PTSIP distinguishes four things that must not be collapsed:

Specification
    -> normative rules

Decision Authority
    -> which explicit coordinated architecture answer won

Project Profile / Responsibility Map
    -> durable project-owned declaration

Observed evidence
    -> what the repository and artifacts actually do

A Decision Authority does not replace the Project Profile selected by .ptsip/profiles/index.json and does not prove conformance. Legacy root ptsip.yaml remains compatibility input only.

Distributed decision coordination

The Reference Tool supports repository-distributed decision coordination through:

refs/heads/ptsip-policy

GitHub is a Tool backend, not a universal Specification dependency. The coordination model preserves stable decision identity, first-valid-resolution-wins, stale-writer-safe conditional mutation, authority freshness, deterministic reconciliation, fail-closed behavior, and separation of global decision state from clone-local application state.

PTSIP uses action-time synchronization rather than continuous background polling.

Product Artifact boundary

Artifact ownership is independent from producer ownership. A DEVELOPMENT_TOOLING or DELIVERY component may validly build a PRODUCT artifact, but the resulting artifact must still satisfy the Product package boundary.

Tool 0.3.8a2 supports snapshot-bound Product Artifact evidence. Release verification checks actual built distribution content rather than treating packaging configuration as proof. Product distribution verification rejects definite non-Product implementation leakage under PTSIP-PKG-001.

VPMS — Verification Purpose Management System

PTSIP and VPMS answer different questions:

PTSIP
    Who owns this responsibility across its lifecycle?

VPMS
    Why does this Verification Case exist, and what does it protect?

PTSIP classification and VPMS Verification Purpose remain separate axes. PTSIP core does not depend on VPMS. VPMS consumes only a narrow read-only projection of already-resolved PTSIP metadata.

The current VPMS compatibility vocabulary may still contain PRODUCT | TOOLCHAIN. VPMS TOOLCHAIN is not a canonical Tool 0.3.8a2 PTSIP classification.

VPMS verification PASS does not imply PTSIP CONFORMANT, and PTSIP CONFORMANT does not imply functional verification PASS.

Conformance

ptsip conform evaluates declared architecture and observed evidence against applicable PTSIP rules after source declarations are resolved to the Effective Responsibility Map.

Completed outcomes are:

A valid profile does not prove conformance. Missing evidence that could hide an applicable mandatory rule remains fail-closed as INCOMPLETE; the Tool does not force an uncertain repository green.

Dependency analysis and bounded review

The WU-13 development CLI reconciles dependency evidence before presenting items for review:

ptsip dependency analyze .
ptsip dependency analyze . --component ptsip-core --json
ptsip dependency review-pack . --max-items 8 --max-context-bytes 12000
ptsip dependency validation-plan . --changed src/ptsip/dependency_analysis.py --json

--component requires a component ID declared in the selected Project Profile. All three commands accept --profile; omit --component to analyze the repository. The examples using ptsip-core and src/ptsip/dependency_analysis.py apply to this repository and must be replaced with consumer-owned component IDs and tracked paths elsewhere.

Analysis reports four advisory actionability buckets:

The default human output is concise. --json preserves the detailed machine report; keep large reports in an external working directory instead of placing the entire report in an AI prompt. A Review Pack includes only REVIEW_REQUIRED items, defaults to at most eight items and 12,000 UTF-8 bytes per item, and limits each item to four source files. Its summary distinguishes selected and deferred items. An item is deferred when its import snippet cannot fit the context budget. Generation does not perform AI review; record actual review counts separately from the generator's ai_reviewed_items: 0.

Review Packs and reusable Python source evidence are stored in external Tool-owned state by default. review-pack --output <new-report.json> chooses an explicit report path; it rejects overwriting tracked repository content. Source evidence is reused only when its cache identity matches, while repository snapshots are checked freshly. Corrupt or stale cache entries are recomputed.

validation-plan proposes focused and component commands from declared verification ownership and observed import reachability. Repeat --changed for multiple tracked paths. It does not execute the commands or replace the repository's full regression and exact-SHA verification requirements.

Dependency analysis and Review Packs do not evaluate conformance or establish architecture authority. Run ptsip conform . for the strict outcome. Unresolved verification dependencies remain blocking in a separate verification bucket; dynamic or ambiguous local imports remain unresolved when their targets cannot be established mechanically. A support-contract decision and any consumer change remain explicit.

Tool and Specification lifecycle

The PTSIP Tool and PTSIP Specification are independently versioned.

• pyproject.toml owns Tool/package source version;
• ptsip --version reports installed Tool version;
• ptsip spec reports the exact Specification family and immutable revision bound to the Tool;
• spec/, schemas/, and registry/ contain canonical Specification assets;
• src/ptsip/specdata/ contains matching embedded machine-readable assets.

The current source tree exposes independent PP and Specification identities:

Project Profile pp.1.02
Specification 0.3.7-draft
SPEC_REVISION 3c47816770d194ae42f98faedc911d980db0e62a

The already-published Tool 0.3.8a1 release retains its historical PP binding in its Tool release note; advancing the PP contract does not rewrite that Tool history.

A new immutable revision is required only for a genuine normative change. Release workflow, test, planning, status, or documentation-only changes do not move SPEC_REVISION by themselves.

Tool 0.3.8a2 release identity

Tool 0.3.8a2 is a repository-namespace stabilization prerelease with a deliberately narrow compatibility goal.

Tool:             0.3.8a2
Project Profile:  pp.1.02
Specification:    0.3.7-draft
SPEC_REVISION:    3c47816770d194ae42f98faedc911d980db0e62a
Release scope:    canonical .ptsip repository namespace + JSON index routing

This Tool release does not introduce a new Specification family or Project Profile contract. It establishes .ptsip/ as the canonical repository-local PTSIP ownership boundary and .ptsip/index.json as the root machine-routing entry point. .ptsip/profiles/index.json is the canonical local Project Profile catalog representation. The former .ptsip/profiles/index.yaml form is accepted only as compatibility input for migration.

.ptsip/tasks/ and .ptsip/runtime/ are reserved namespaces in this release. Reservation does not claim a complete generic Repository Task Engine or finalized runtime persistence semantics, and the absence of those capabilities does not authorize a coding agent to establish another PTSIP control-plane root under tools/, scripts/, or another repository path.

Release scope is recorded in releasenote/tool/0.3.8a2.md.

Tool 0.3.8a1 release identity

Tool 0.3.8a1 is an emergency bridge prerelease with an intentionally narrow scope.

Tool:             0.3.8a1
Project Profile:  pp.1.01
Specification:    0.3.7-draft
SPEC_REVISION:    3c47816770d194ae42f98faedc911d980db0e62a
Release scope:    explicit proposed candidate bridge

This Tool release does not introduce a new Specification family or Project Profile contract.

It adds support for representing a not-yet-existing component as an explicit proposed candidate and resolving that proposal without silently materializing it as an active component. It does not claim completion of the broader Tool 0.4.0 capability-recovery architecture.

Release scope and verification history are recorded in releasenote/tool/0.3.8a1.md. The release gate is defined by planning/0.3.8/0.3.8a1-emergency-release-gate.yaml.

License authority

PTSIP licensing authority is contained exclusively under License-Authority/. The machine-readable entry point is License-Authority/license-authority.yaml, and the controlling legal text is License-Authority/LICENSE.md.

The canonical effective time currently declared by the License Authority is 2026-09-15T00:00:00Z (UTC).

License-related wording elsewhere in this repository is informational or contextual only. It does not become part of the License, modify it, or become incorporated by reference.

Normal Tool releases, Specification validation, Tool version changes, documentation mentions, keyword matches, and AI semantic guesses do not authorize License Authority entry. Entry uses only the triggers declared by License-Authority/license-authority.yaml.

Consumer Repository canonical namespace

Read-only inspection and Pilot operations remain read-only and do not create repository state merely by being invoked. When a Consumer Repository persists repository-local contracts, registries, configuration, task/operation metadata, or execution state whose semantic owner is PTSIP, .ptsip/ is the canonical ownership boundary.

Repository tooling implementations may physically live under tools/, scripts/, src/, or another project-owned path. Their PTSIP-owned registration, policy bindings, task/operation contracts, indexes, and lifecycle state must not establish an alternative repository-local PTSIP control-plane root.

Canonical machine indexes under .ptsip/ use JSON. Tool 0.3.8a2 uses .ptsip/index.json as the root router and .ptsip/profiles/index.json for local Project Profile selection. The Task and runtime namespaces are reserved; runtime persistence details remain future work. A reserved or unavailable Task capability must fail closed for the dependent operation rather than causing an agent to invent a new Task Engine elsewhere in the repository.

Project status

PTSIP remains experimental. Tool 0.3.8a2 is the current namespace-stabilization prerelease candidate; its publication boundary is tracked in releasenote/tool/0.3.8a2.md. Historical Tool releases, including 0.3.8a1, and Specification notes are preserved under releasenote/.