Stabilize plugin loader and Docker extension smoke (#50058)

* Plugins: stabilize Area 6 loader and Docker smoke

* Docker: fail fast on extension npm install errors

* Tests: stabilize loader non-native Jiti boundary CI timeout

* Tests: stabilize plugin loader Jiti source-runtime coverage

* Docker: keep extension deps on lockfile graph

* Tests: cover tsx-cache renamed package cwd fallback

* Tests: stabilize plugin-sdk export subpath assertions

* Plugins: align tsx-cache alias fallback with subpath fallback

* Tests: normalize guardrail path checks for Windows

* Plugins: restrict plugin-sdk cwd fallback to trusted roots

* Tests: exempt outbound-session from extension import guard

* Tests: tighten guardrails and cli-entry trust coverage

* Tests: guard optional loader fixture exports

* Tests: make loader fixture package exports null-safe

* Tests: make loader fixture package exports null-safe

* Tests: make loader fixture package exports null-safe

* changelog

Signed-off-by: joshavant <830519+joshavant@users.noreply.github.com>

---------

Signed-off-by: joshavant <830519+joshavant@users.noreply.github.com>

Dockerfile

@@ -146,6 +146,10 @@ COPY --from=runtime-assets --chown=node:node /app/extensions ./extensions
 COPY --from=runtime-assets --chown=node:node /app/skills ./skills
 COPY --from=runtime-assets --chown=node:node /app/docs ./docs
 
+# In npm-installed Docker images, prefer the copied source extension tree for
+# bundled discovery so package metadata that points at source entries stays valid.
+ENV OPENCLAW_BUNDLED_PLUGINS_DIR=/app/extensions
+
 # Keep pnpm available in the runtime image for container-local workflows.
 # Use a shared Corepack home so the non-root `node` user does not need a
 # first-run network fetch when invoking pnpm.