Phase 0 progress

Bootstrap. Get to "clone and build" with the process scaffolding in place.

Done

• Repo renamed from YC27 to mnemosyne.
• Rust workspace: mnem-core (library, one placeholder function and a test) and mnem-cli (the mnem binary, --version and a declared command tree with every subcommand stubbed out). Rust CI (fmt, clippy -D warnings, test, build --release) green on main.
• Python SDK skeleton: mnem exposes its version and raises a clear error on any API that is not built yet. A smoke test covers both. Python CI (ruff, pytest) green on main.
• CI: a rust job and a python job on every pull request and on push to main.
• Docs: README.md, CONTEXT.md (seed glossary), ROADMAP.md, AGENTS.md (one-maintainer and offline-core invariants), CONTRIBUTING.md, docs/adr/0000-template.md, ADR-0001, the ADR index, the agent workflow docs, and the docs/format, docs/research, examples placeholders.
• Issue and pull request templates, including the Wayfinder ticket template.
• Licence: Apache 2.0.
• Labels: phase-0 to phase-7, the wayfinder:* set, ready-for-agent, track-a / track-b, adr, format, benchmark, spike.
• Milestones: one per roadmap phase (renumbered to v0.0.2 to v0.0.7 in ADR-0010).
• The Phase 0 Wayfinder map (#1), now with ten child tickets: #2 to #7 plus #15 to #18 (commit hashing research and ADR-0005, ADR-0007 versioning, repo hygiene).
• Maps for Phases 1 to 6 (#9 to #14), each a kept-open epic with a checklist comment linking its children.
• The full backlog: 68 issues in total. 57 granular one-PR-sized child tickets across the six phase maps, sub-issue linked, with 48 blocked_by dependency edges. Every task ticket is scoped to something a single pull request could close.
• The scaffold (#2) built on chore/phase-0-scaffold, merged via PR #8 with green CI.
• Tag v0.0.1 pushed.
• The GitHub project (Mnemosyne roadmap), linked to the repo, with all open issues added.
• Decision tickets closed: #3 and #15 (research), #4, #5, #6, #7, #16 (research and grilling). ADR-0002 (object format), ADR-0003 (memory node model), ADR-0004 (core and SDK boundary) and ADR-0005 (commit identity) all Accepted.
• Repo hygiene (#18): SECURITY.md, CODE_OF_CONDUCT.md, .github/dependabot.yml (cargo, pip, github-actions), rust-toolchain.toml, and an msrv CI job at Rust 1.85 (the floor set by clap's edition2024 transitive requirement).
• ADR-0007, versioning and release policy: Accepted (#17). SemVer 2.0.0; format_version on its own integer track; additive format changes are a MINOR software release, breaking ones a MAJOR with mnem migrate; hand-written CHANGELOG.md; a gated release workflow (built in Phase 6).

Phase 0 is complete. Definition of done met: cargo build and cargo test green in CI, import mnem works, mnem --version runs, v0.0.1 tagged. ADR-0001 to ADR-0005 and ADR-0007 Accepted.

Pending, not blocking

• The v0.0.1 GitHub release. The tag is pushed; the release page was blocked by a session safety check. Cut it from the tag in the web UI, or add a Bash permission rule for gh release.
• Project board views. The project has all items; add a "group by Milestone" view and a "group by Status" board in the UI.

Next

Phase 1 (v0.0.2, "it commits"), map #9. First: research #19 (object encoding and the store engine), then ADR-0008 (#20) and ADR-0009 (#21), then the build tickets starting at #22 (object types).

Notes

• The pyo3 and maturin binding was moved from Phase 0 to Phase 1, where the core first has something to bind. Phase 0 ships a pure-Python placeholder. ROADMAP updated to match.
• Two CI fixes were needed for the Python job: the runner's system interpreter is externally managed, so uv pip install --system fails, and setup-uv with python-version already creates the .venv, so a second uv venv clashes. Settled on: setup-uv with python-version, then uv pip install and uv run straight into that venv.
• The initial commit on main shows a red CI run: it predates the Cargo and pyproject files. main has been green since PR #8 merged.