v0.2.0

Sidecat 0.2.0 source milestone.

This tag marks the first integrated Gen 3 Sidecat source shape:

- Sidecat as an extensible agent workbench.
- Package drafts as reusable moves.
- sidecatd as a federation-aware router and authority-node boundary.
- Sidebar and Sidebird contracts aligned with the governance model.
- Strict custody selected by contract level, not imposed on every action.
- Total tracked Markdown kept under the 15-file cap.

This is a source milestone and historical project marker.
It is not recommended for general use.

Evidence:

- Milestone parent: work_866f7f1eac33011808756ba5c9f135e5.
- Closure audit: work_124062b512638ad1e939d598165a1994.
- Release work: work_0c95ccfd83bef93311f36d9878a8609c.
- Commit: 018f1e8fd61f9feda9a6b1ed68a3da57389e5c7f.
- CI pipeline: https://gitlab.com/sidecat-dev/sidecat/-/pipelines/2616692631.