Files
deepseek-harness/packages/credentials
Yichen Jiang 03b534de16 feat(credentials): move the store to .credentials.yaml and layer $DSH_HOME/.env
$DSH_HOME/.env carried two incompatible jobs. As credentials-local's writable
secret store it could not be hoisted into process.env — hoisting makes every
stored key read as a read-only launch override and blocks rotation from the
TUI and the web page. But its name and dotenv format promise an environment
file, so a DEEPSEEK_BASE_URL sitting beside a working DEEPSEEK_API_KEY in the
same file was silently ignored: only the credential provider read the
document, and it addresses credential references alone.

Split the two jobs into two files.

.credentials.yaml is the provider-managed store: a strict YAML mapping of
CredentialRef to non-empty string, no version field, no wrapper level. Because
it holds credentials and nothing else, a non-mapping root, a non-identifier
key, a non-string value, an empty string, a duplicate key, and malformed YAML
are all rejections rather than skipped entries — loud at boot and at a write,
warn-and-keep-last-good on a live reload. The dotenv physical-line editor
gives way to a patch of the parsed document, so comments and untouched entries
keep their formatting and any string value round-trips, multi-line included.
Writer lock, read-modify-write, atomic 0600 write under a 0700 directory,
watcher, self-write suppression, and quiescent disposal are unchanged.

$DSH_HOME/.env becomes the user's ordinary environment layer. app-boot's new
loadLayeredEnv loads the invoking directory's .env then the Harness home's,
giving user < project < inherited; the home resolves from the inherited
environment first, so a project .env cannot redirect it.

Credential precedence is unchanged: the live environment still wins read-only
over the file, and shadowed writes still reject. Whether a provider-managed
store should instead win over the environment is a separate decision.

No migration: a key already in $DSH_HOME/.env keeps resolving through the new
environment layer, as a read-only env source that shadows the stored one.
2026-08-04 14:50:38 +08:00
..

credentials/

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The credential capability seam, as three-package shape dictates (interface / implementation / consumers):

Package Role
credentials/ Abstract ctx.credentials: branded CredentialRef references, per-operation resolve, UI-safe describe, fail-loud set/unset, the credentials/updated commit event
credentials-local/ File/environment provider: the live process environment (read-only, wins) layered over $DSH_HOME/.credentials.yaml (writable, comment-preserving edits, hot-reloaded)

Configuration files carry references to secrets (apiKeyEnv: DEEPSEEK_API_KEY), never the secrets: the settings document stays safe to sync and render, and rotating a value touches no configuration. The LLM adapters are the first consumers — they resolve their reference once per model request, which is what makes a key stored moments ago reach the very next request without restarting anything.

The seam shape leaves room for keyring-, helper-command-, and KMS-backed providers.