* docs(code-execution): document HERMES_* env narrowing + passthrough workaround
The execute_code sandbox-child env scrub (108397726, #27303) deliberately
dropped the broad HERMES_ prefix passthrough, keeping only an operational
4-var allowlist (HERMES_HOME/PROFILE/CONFIG/ENV). A script that relied on a
non-secret HERMES_* var (HERMES_BASE_URL, HERMES_KANBAN_DB, HERMES_*_WEBHOOK,
or a plugin-defined one) now sees it unset in the child.
Document the behavior change and the two recovery routes (terminal.env_passthrough
in config.yaml, or required_environment_variables in skill frontmatter), plus
the debug log line that surfaces the drop for diagnosis.
* fix(mcp): stop reporting false OAuth success when no token was obtained
`hermes mcp login` reported "Authenticated — N tool(s) available" for
servers that serve tools/list without auth (e.g. Google's official Drive
MCP server) even when the OAuth flow never completed — dynamic client
registration 400'd because the provider doesn't support RFC 7591, so no
token was ever acquired. Every real tool call then hung until timeout
with no indication of why.
Login now verifies a token actually landed on disk after the probe. When
it didn't, it warns that authentication didn't complete and shows the
config needed to supply a pre-registered client_id/client_secret (the
existing, already-supported workaround for DCR-less providers).
Adds a docs pitfall for Google Drive / Atlassian-style providers.
Fixes#34775
27a2c4f36f