fix(skills): widen HERMES_HOME-aware .env resolution to all sibling skills

Follow-up to the GitHub-skills fix: the same hardcoded ~/.hermes/.env
pattern existed across other bundled and optional skills. Under the
official Docker setup (HERMES_HOME=/opt/data, subprocess HOME=/opt/data/home)
those paths point at a nonexistent file.

- kanban-video-orchestrator setup.sh.tmpl + docs: resolve via
  ${HERMES_HOME:-$HOME/.hermes}/.env in check_key()
- telephony.py / canvas_api.py / hyperliquid_client.py: error and
  save messages now report the real resolved env path instead of a
  hardcoded literal (path resolution itself was already correct)
- godmode SKILL.md: load_dotenv snippet resolves via HERMES_HOME
- watch_github.py + ~20 SKILL.md prose mentions: document the env file
  as ${HERMES_HOME:-~/.hermes}/.env so Docker users edit the right file

optional-skills/blockchain/hyperliquid/scripts/hyperliquid_client.py

@@ -115,7 +115,7 @@ def _resolve_user(user: Optional[str]) -> str:
 
     sys.exit(
         "Missing Hyperliquid address. Pass <address> explicitly or set "
-        f"{DEFAULT_USER_ENV} in your environment or ~/.hermes/.env."
+        f"{DEFAULT_USER_ENV} in your environment or {_hermes_home() / '.env'}."
     )