Add workspace review summaries

Add workspace summary across the CLI, SDK, and MCP, and include it in the workspace-core profile so chat hosts can review one concise view of the current session.

Persist lightweight review events for syncs, file edits, patch applies, exports, service lifecycle, and snapshot activity, then synthesize them with command history, current services, snapshot state, and current diff data since the last reset.

Update the walkthroughs, use-case docs, public contract, changelog, and roadmap for 4.3.0, and make dist-check invoke the CLI module directly so local package reinstall quirks do not break the packaging gate.

Validation: uv lock; ./.venv/bin/pytest --no-cov tests/test_vm_manager.py tests/test_cli.py tests/test_api.py tests/test_server.py tests/test_public_contract.py tests/test_workspace_use_case_smokes.py; UV_OFFLINE=1 UV_CACHE_DIR=.uv-cache make check; UV_OFFLINE=1 UV_CACHE_DIR=.uv-cache make dist-check; real guest-backed workspace create -> patch apply -> workspace summary --json -> delete smoke.

CHANGELOG.md

@@ -2,6 +2,17 @@
 
 All notable user-visible changes to `pyro-mcp` are documented here.
 
+## 4.3.0
+
+- Added `pyro workspace summary`, `Pyro.summarize_workspace()`, and MCP
+  `workspace_summary` so users and chat hosts can review a concise view of the
+  current workspace session since the last reset.
+- Added a lightweight review-event log for edits, syncs, exports, service
+  lifecycle, and snapshot activity without duplicating the command journal.
+- Updated the main workspace walkthroughs and review/eval recipe so
+  `workspace summary` is the first review surface before dropping down to raw
+  diffs, logs, and exported files.
+
 ## 4.2.0
 
 - Added host bootstrap and repair helpers with `pyro host connect`,