* feat(secrets): one-command token rotation + actionable startup errors for all secret sources
When a Bitwarden machine-account token expired, users saw a raw Rust
error dump (invalid_client + Location: + backtrace hints) and the only
fix was manually editing .env or re-running the whole setup wizard.
- New `hermes secrets bitwarden token` / `hermes secrets onepassword
token`: paste a new token (masked prompt or flag), the command probes
the backend BEFORE persisting — a rejected token changes nothing; a
good one is written to .env and the fetch caches are cleared.
- New optional SecretSource.remediation(kind, cfg) hook: startup
warnings now print a '→ Run `hermes secrets <name> token`…' fix-it
line after any fetch error, for bundled AND plugin sources (generic
per-ErrorKind defaults in the ABC).
- bws stderr is summarized to its cause line (Location:/backtrace noise
dropped) and invalid_client/invalid_grant/400 identity rejects are
now classified AUTH_FAILED (was INTERNAL) with a plain-English
explanation naming the token env var.
- op whoami probe accepts a candidate token so rotation validates the
NEW credential, not the ambient one.
Additive hook with defaults — no SECRET_SOURCE_API_VERSION bump.
* docs: fix MDX parse error in secret-source-plugin hook table
Escaped backticks around a <name> placeholder made MDX parse it as an
unclosed JSX tag, breaking the docs-site build. Use a plain code span
instead.
