chore(release): v0.7.0

[chris-colinsky]

Release prep for v0.7.0. Docs-and-examples release; pinned spec stays at v0.16.1.

What's in this release

Added

• openarmature.graph.NextCall and openarmature.graph.default_classifier exports, so custom middleware can type its next_ parameter and extend the retry classifier without reaching into the submodule.
• New Middleware concept page (docs/concepts/middleware.md).
• Reference docs filled in: 35 previously-missing entries across graph, prompts, and checkpoint (mkdocstrings was silently omitting members without docstrings).
• Examples 05–09 (fan-out with retry, parallel branches, multimodal prompts, checkpointing with migration, tool use) plus per-example docs pages with mermaid diagrams.
• RELEASING.md documenting the rc-first flow.
• Docs site UX, nav, and reference cleanup.

Changed

• FanOutNode.run / ParallelBranchesNode.run raise NotImplementedError instead of RuntimeError. Both methods exist only to satisfy the Node protocol; the engine dispatches these through run_with_context. Backwards-compatible since NotImplementedError subclasses RuntimeError.

Pre-release checklist (from RELEASING.md)

• CHANGELOG current, dated 2026-05-23
• Docs sweep — no stale 0.6.0 references in user-facing docs
• pyproject.toml version pinned to 0.7.0
• On clean branch with latest pulled
• Local checks green (697 passed, 64 skipped; pyright clean; ruff clean)
• CI green on this PR

Next steps after merge

1. Tag v0.7.0-rc1 and push — workflow publishes to TestPyPI
2. Verify rc1 per smoke set in RELEASING.md
3. Tag v0.7.0 — workflow publishes to PyPI + creates GitHub Release (pypi environment approval gate applies)

Test plan

• CI passes (test job + pre-commit)
• uv run pytest tests/ locally if any further fixups happen
• Read CHANGELOG entry for accuracy and completeness

[Copilot]

Pull request overview

Prepares the openarmature Python package for the v0.7.0 release by updating the package version metadata, lockfile entry, smoke test expectations, and adding the corresponding changelog section.

Changes:

• Bumped package version to 0.7.0 in runtime (__init__.py), packaging metadata (pyproject.toml), and uv.lock.
• Updated smoke test to assert the new package version.
• Added a 0.7.0 release entry to CHANGELOG.md (dated 2026-05-23), keeping the pinned spec at 0.16.1.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
uv.lock	Updates the editable openarmature package entry to version 0.7.0.
tests/test_smoke.py	Updates the asserted openarmature.__version__ to 0.7.0.
src/openarmature/init.py	Bumps __version__ to 0.7.0 (spec version unchanged).
pyproject.toml	Bumps project.version to 0.7.0.
CHANGELOG.md	Adds the 0.7.0 release notes section dated 2026-05-23.

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