add make-release.sh, svatantrya.asc, and update HANDOFF.md

- make-release.sh: automated release script (tests, lint, build, GPG sign, SHA-256, Gitea)
- svatantrya.asc: PGP public key for release verification
- HANDOFF.md: updated release workflow documentation
- willexecutors.py: input validation for addresses, fees, and API responses
- manifest.json: fixed version back to 0.6.1
- test_core_plugin_base.py: updated baltx_fees default

tests/test_core_plugin_base.py

@@ -206,7 +206,7 @@ def test_default_will_settings_relative():
 
 def test_default_will_settings():
     settings = BalPlugin.default_will_settings()
-    assert settings["baltx_fees"] == 100
+    assert settings["baltx_fees"] == 20
     assert "threshold" in settings
     assert "locktime" in settings
     # threshold/locktime should be absolute timestamps
@@ -228,7 +228,7 @@ def test_validate_will_settings():
     # Note: passing None triggers `will_settings = []` which then fails
     # on .get(). This is a latent bug — test passing a dict directly
     result = BalPlugin.validate_will_settings(None, {"baltx_fees": 0})
-    assert result["baltx_fees"] == 100
+    assert result["baltx_fees"] == 20
 
     # normal settings unchanged
     input_settings = {"baltx_fees": 50, "threshold": 1700000000, "locktime": 1800000000}