Symptom (#102041): under a multiplex gateway the default profile's vault/1Password/
Bitwarden/plugin-sourced credentials vanished for the rest of the process after the first
cron fire or the post-discovery plugin refresh; with the key already in the process env
(systemd EnvironmentFile=) the scope was empty from boot. Every get_secret() read then
failed closed ("No usable credentials", every Telegram sender rejected).
Why: _apply_external_secret_sources marked the home applied after any real fetch, but only
snapshotted names in report.provenance — the NEWLY applied ones. On a re-apply the previous
apply's own write-back makes every key `skipped_existing`, so the snapshot latched to {} and
_hydrate_profile_secret_sources returned that empty snapshot forever. Separately,
reset_secret_source_cache() was process-wide, so one profile's cron re-pull dropped every
sibling's hydrated snapshot (1aa62ceb45 isolated the routed reload but not the reset).
Change:
- env_loader: snapshot every name a source supplied (provenance + skipped_existing) from
the home's effective environment, so a shadowed re-apply keeps the values it had.
- reset_secret_source_cache(hermes_home=None): optional per-home reset; global clear kept
for tests/config edits.
- cron per-fire re-pull and plugins._refresh_secret_sources_after_discovery reset + reload
only the home they resolve to.
- Two invariant tests (red on base) in tests/test_env_loader_secret_sources.py; docs note in
secret-source-plugin.md.
Reported-by: luochen1990
Addresses #102041
Address teknium1 review on #64189:
- Re-pull gate now delegates to each source's is_enabled(cfg) via the
registry contract, so a plugin source with custom activation logic is
honored (previously only secrets.<name>.enabled was checked).
- Add BUILTIN_SOURCE_NAMES to the registry so plugin-vs-bundled is a
single source of truth instead of a hard-coded set at the call site.
- Reconcile docs: rewrite the timing :::note to describe both the
post-discovery re-pull and the remaining import-time limitation, and
cross-link the first-process bootstrap section.
- Tests: real SecretSource subclasses, custom is_enabled activation
(positive + negative), is_enabled-raises skip, builtin-only no-op,
and a discovery-registration end-to-end re-pull check.
After plugins register SecretSource backends, reset the env-loader cache
and re-run load_hermes_dotenv when an enabled plugin secret source is
configured. Closes the first-process bootstrap gap where import-time env
load stale-outs plugin vaults (tommck / Community ask). Fail-open, no-op
without plugin sources.
Docs: first-process bootstrap timing on secret-source plugin guide.
Tests: unit coverage for noop / enabled re-pull / discover hook.
Part of #64182 plugin-interface expansion.
Teknium