feat(kanban): add rerun and auto-subscribe

[crayfish-ai]

Summary

• add task creation auto-subscribe support across the CLI, kanban_create tool, and gateway env fallback
• add hermes kanban rerun plus the DB reset path that reopens terminal tasks while preserving parent gates and optional reassignment
• preserve notify subscriptions on rerun by advancing each subscription cursor instead of deleting the row
• include parent workspace paths in worker context only when the directory still exists

Testing

• source .venv/bin/activate && pytest tests/hermes_cli/test_kanban_db.py -x -q -k not\ resolve_hermes_argv
• source .venv/bin/activate && pytest tests/hermes_cli/test_kanban_fixes_p1_p6.py -x -q

[alt-glitch]

Duplicate of #29097 — same feature set (kanban rerun command + auto-subscribe on task creation + parent workspace context). #29097 is still open with the same changes.

[crayfish-ai]

Closing as a duplicate of #29097 per upstream feedback. The failing test job here matches the same unrelated baseline failures affecting the other kanban PRs: tests/plugins/web/test_web_search_provider_plugins.py is still expecting the old provider list, and tests/hermes_cli/test_update_hangup_protection.py is failing its stdout/stderr wrapper assertion. The kanban-targeted local tests for this branch are passing.