Update README, roadmap, workspace and updater

Summary of changes:
- BABA_YAGA_Updater/main.py: reconfigure stdout/stderr to UTF-8 and print startup message.
- Docs: update progress bars/percentages in README.md and sections (maze generation marked 90% / In Progress; system readiness updated 30.2% -> 33.7%; phase counts adjusted).
- .idea/workspace.xml: simplify changelist to reference main.py only and adjust a workItem duration.
- Add recovery Unity asset (Assets/_Recovery/0 (18).unity) and its .meta file.

Small maintenance, encoding fix, and progress updates.

Assets/_Recovery/0 (18).unity.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: e87b3f62b857861438cff42d6ca51a25
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: