WP-0001: feedback channels, CI, pre-commit, telemetry docs

Add kaizen-agentic feedback CLI, Gitea issue templates, CI workflow,
pre-commit hooks, FEEDBACK/TELEMETRY docs, and cross-platform path tests.
Improve CLI registry error messages; remove agents_backup scaffolding.
Apply black formatting across src/tests for CI consistency.

State Hub message sent to agentic-resources for Helix correlation doc link.

src/kaizen_agentic/integrations/artifact_store.py

@@ -230,4 +230,4 @@ def _http_bytes(
 
 
 def _quote(value: str) -> str:
-    return parse.quote(value, safe="")
+    return parse.quote(value, safe="")