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/software-development/rest-graphql-debug/SKILL.md

@@ -397,7 +397,7 @@ class TestAPISmoke:
 
 ### Token handling
 - Never log full tokens. Redact: `Bearer <REDACTED>`.
-- Never hardcode tokens in scripts. Read from env (`os.environ["API_TOKEN"]`) or `~/.hermes/.env`.
+- Never hardcode tokens in scripts. Read from env (`os.environ["API_TOKEN"]`) or `${HERMES_HOME:-~/.hermes}/.env`.
 - Rotate immediately if a token surfaces in logs, error messages, or git history.
 
 ### Safe logging