Extends the existing "read runtime from template config.yaml"
preflight to also pre-fill `model` from the template's
runtime_config.model (current format) or top-level `model:` (legacy
format). Without this, any create path that names a template but
doesn't pass an explicit model produced a workspace with empty
model — and hermes-agent's compiled-in Anthropic fallback ran with
whatever key the user did provide, 401'ing at the first A2A call.
Affected paths (all produced broken workspaces before this change):
- TemplatePalette "Deploy" button (POSTs only name + template + tier)
- Direct API / script callers (MCP, CI scripts)
- Anyone copying an existing workspace's template name without model
PR #1714 fixed the canvas CreateWorkspaceDialog's hermes branch —
when the user typed template="hermes" in the dialog, a provider
picker + model auto-fill kicked in. But TemplatePalette and direct
API calls bypassed that dialog entirely, so the trap stayed open.
Fix is backend-side so it catches every caller at once (defense in
depth). The parser is line-based + a minimal state var tracking
whether the current line sits under `runtime_config:` — matches the
existing fragile-but-safe style used for `runtime:` above. Strings
are trimmed of quote wrappers so both `model: x` and `model: "x"`
round-trip.
Explicit model in the payload still wins — we only pre-fill when
payload.Model is empty. Added TestWorkspaceCreate_
CallerModelOverridesTemplateDefault to pin that contract.
## Tests
- TestWorkspaceCreate_TemplateDefaultsMissingRuntimeAndModel — the
hermes-trap fix: runtime=hermes + model=nousresearch/... inherits
from template when payload omits both.
- TestWorkspaceCreate_TemplateDefaultsLegacyTopLevelModel — legacy
top-level `model:` still fills.
- TestWorkspaceCreate_CallerModelOverridesTemplateDefault — explicit
payload.model NOT overwritten.
- Full suite `go test -race ./...` stays green.
## Complementary work in flight
- PR molecule-core#1772 — fixes the E2E Staging SaaS which had the
same trap on its own POST body (missing provider prefix).
- Canvas TemplatePalette could still surface a richer per-template
key picker (deferred; MissingKeysModal already handles keys, and
the default model now flows from the template config).
Co-authored-by: Hongming Wang <hongmingwang.rabbit@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: molecule-ai[bot] <276602405+molecule-ai[bot]@users.noreply.github.com>
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