fix(openclaw): forward plugin config via api.pluginConfig (closes #150)

[Fearvox]

What

The OpenClaw plugin's register() read plugin config only from the
factory-callback argument:

api.registerContextEngine(pluginMeta.id, (pluginConfig) => {
  return createContextEngine(pluginMeta, pluginConfig, api.logger);
});

Current OpenClaw hosts deliver plugin config via api.pluginConfig, not the
callback argument. On those hosts the callback arg is undefined, so the engine
booted with no config at all — exactly the bug reported in #150
("factory callback receives no config — api.pluginConfig not forwarded"), whose
repro shows this same register().

This PR makes register() prefer the host-provided config and fall back to the
callback arg so config forwarding works on both host generations:

const resolvedConfig = api.pluginConfig ?? pluginConfig ?? {};
return createContextEngine(pluginMeta, resolvedConfig, api.logger);

Why

A passive context engine that boots with empty config silently uses defaults
(default serverUrl, default userId) instead of the host's configured values
— memories get written under the wrong identity / endpoint with no error. The
?? {} tail also keeps resolveConfig() from throwing when both sources are
absent.

Tests

Adds test/register-config.test.js (runs with node --test, fully offline — a
stubbed fetch makes the resolved serverUrl observable via the engine's
/health bootstrap call):

• register() prefers api.pluginConfig over the callback arg — host config wins.
• register() falls back to the callback arg when api.pluginConfig is absent.
• register() tolerates both config sources being empty — defaults, no throw.

cd methods/EverCore/examples/openclaw-plugin
node --test test/register-config.test.js

Result: 3 passed.

Scope

Surgical: two files only — examples/openclaw-plugin/index.js and its new
regression test. Deliberately does not bundle the separate saveMemories
PersonalAddRequest envelope fix (issue #237) — that ships as its own PR so each
change stays reviewable in isolation.

Closes #150.

Credit

Original fix. Thanks to @keylimesoda for the precise #150 repro that pinpointed
the api.pluginConfig forwarding gap.

Co-Authored-By: Claude Opus 4.8 (1M context) noreply@anthropic.com

🤖 Generated with Claude Code

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