chore(release): v0.1.0 — Python rewrite first tagged milestone

CHANGELOG entry created. Tag `v0.1.0` follows in the next step.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

my-deepagent/CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## [Unreleased]
 
+## [0.1.0] - 2026-05-16
+
+First tagged milestone of the Python rewrite. The pre-Python-rewrite TypeScript
+monorepo has been removed (commit `0e61b2d`); recovery is available via the
+`pre-python-rewrite` tag at `c9fed71`.
+
 ### Added
 - Step 15 — End-to-end real OpenRouter integration: `tests/integration/test_e2e_workflow.py`
   runs `spec-and-review@1` workflow (spec → review → verify) end-to-end against real