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/devops/watchers/scripts/watch_github.py

@@ -8,7 +8,8 @@ Usage (via cron with --no-agent):
       --script "$HERMES_HOME/skills/devops/watchers/scripts/watch_github.py" \\
       --script-args "--name hermes-issues --repo NousResearch/hermes-agent --scope issues"
 
-Set GITHUB_TOKEN (or GH_TOKEN) in ~/.hermes/.env to avoid the 60 req/hr
+Set GITHUB_TOKEN (or GH_TOKEN) in the Hermes .env file
+(``${HERMES_HOME:-~/.hermes}/.env``) to avoid the 60 req/hr
 anonymous rate limit.
 
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