v0.4.5 — Apache-2.0 relicense, fossic PyPI

v0.4.5 — Apache-2.0 relicense and fossic PyPI switch

Ecosystem hygiene release. No behavior changes from v0.4.4.

Highlights

License

• Relicensed to Apache-2.0 (was MIT). See LICENSE.
• SPDX identifiers added to all source files.
• CONTRIBUTING.md now requires DCO signoff (git commit -s).

Fossic dependency

• Fossic now installs from PyPI as an optional extra:
  pip install cerebra → SQLite-only mode
  pip install cerebra[fossic] → adds run-cycle, serve, event streams

• requires-python widened to >=3.12,<3.14 (fossic 1.8.3 ships cp313 wheels).

Repo hygiene

• Documentation restructure: HISTORY.md, ARCHITECTURE_STATE.md, TECH_DEBT.md replace pre-cleanup archive framing.
• Internal-artifact .gitignore patterns added.
• CI installs with [dev,fossic] extras.

Tests

1686 tests passing. Coverage: 82.30%.

Migration

None required. Users of prior versions continue to work as before.

New users install via:

uv sync --extra dev --extra fossic