Functional Ownership Map (demoted — narrative only)

⚠️ Not authoritative. This document is a historical narrative of how functional ownership was once modelled (mission functional-ownership-map-01KPDY72, 2026-04). Its machine-readable companion 05_ownership_manifest.yaml and that manifest's schema gate (tests/architecture/test_ownership_manifest_schema.py) were deleted by mission post-convergence-governance-01M1TMPH (2026-09-06): the manifest had drifted from reality (it named the deleted src/doctrine/, src/specify_cli/sync/, src/specify_cli/saas/ trees and the never-created src/lifecycle/ / src/orchestrator/ targets), and its schema gate pinned that stale vocabulary — so correcting the manifest reddened the gate. Rather than perpetuate a self-declared authority that contradicted the code, both were removed.

The canonical modularity SSOT is the enforced pair

Module boundaries and inventory are owned by two enforced sources that agree with each other and with the code CI actually ships. Treat every other module map (this file, the C4 landscape/implementation-mapping docs, the AGENTS.md package lists) as a derived view that must cite them:

Concern	Canonical source	Enforced by
Module inventory (which top-level packages ship)	pyproject.toml [tool.hatch.build.targets.wheel].packages	tests/architectural/test_pyproject_shape.py
Import direction (the layer chain)	tests/architectural/conftest.py landscape fixture + tests/architectural/test_layer_rules.py	test_layer_rules.py (pytestarch LayerRule + TestLayerCoverage meta-tests + the mission_runtime and runtime outbound ledgers)
Retired-subsystem negative boundary	pyproject.toml [tool.ruff.lint.flake8-tidy-imports.banned-api] (TID251)	tests/architectural/test_no_retired_subsystems.py

The enforced layer chain is:

kernel <- charter <- {glossary, runtime, mission_runtime} <- specify_cli

charter.offering holds the doctrine code the former top-level src/doctrine/ package was relocated into (Convergence #3881); the src/doctrine.py deprecation shim was removed (#805).

Direction (2026-10-12): charter is slated to leave this in-tree layer chain and become an external contract package in its own repository, consumed through charter.offering.api like spec-kitty-events / spec-kitty-tracker (ADR 2026-10-12-2; precondition #645, now GA-gating). The enforced pair stays the authority; this note changes no gate.

Superseded (2026-10-19): charter stays in this in-tree layer chain. The Python charter stays in core until it is retired and nothing Python moves to spec-kitty-charter; offering reads cut over to the spec-kitty-charter service through charter.offering.api (spec-kitty-charter ADR-0008 and ADR-0010, which supersede ADR 2026-10-12-2; ADR 2026-10-16-1, Amendment 2026-10-19).

Hosted client packages were removed

The former zeitgeist_client/ and saas_client/ packages were removed from open-core (#6164; the code is preserved in spec-kitty/event-router). See ADR 2026-09-06-1-convergence-retirement-and-client-repo-inversion and the precedent ADR 2026-04-25-1-shared-package-boundary.

Historical note

The original slice model (cli_shell, charter_governance, doctrine, runtime_mission_execution, glossary, lifecycle_status, orchestrator_sync_tracker_saas, migration_versioning) framed an extraction roadmap (missions #612–#615). Only glossary (→ src/glossary/) and part of runtime (→ src/runtime/next/) were extracted; the src/lifecycle/ and src/orchestrator/ targets were never created, and the sync/saas slice was retired outright by the Convergence. Consult git history for the pre-2026-09-06 slice detail; do not treat it as a current statement of ownership.