chore: standardize .npmrc + workspace for corp network resilience

- .npmrc: use ${GITEA_NPM_HOST:-localhost}:3300 instead of hardcoded
  gitea.bytelyst.com (corp TLS proxy breaks external URL).
- pnpm-workspace.yaml: add ../learning_ai_common_plat/packages/* so
  @bytelyst/* resolve locally without registry access.
- .npmrc: enable link-workspace-packages + prefer-workspace-packages.

.npmrc

@@ -1,3 +1,5 @@
-@bytelyst:registry=https://gitea.bytelyst.com/api/packages/ByteLyst/npm/
-//gitea.bytelyst.com/api/packages/ByteLyst/npm/:_authToken=${GITEA_NPM_TOKEN}
-strict-ssl=true
+@bytelyst:registry=http://${GITEA_NPM_HOST:-localhost}:3300/api/packages/ByteLyst/npm/
+//localhost:3300/api/packages/ByteLyst/npm/:_authToken=${GITEA_NPM_TOKEN}
+strict-ssl=false
+link-workspace-packages=true
+prefer-workspace-packages=true

pnpm-workspace.yaml

@@ -1,3 +1,4 @@
 packages:
   - backend
   - web
+  - ../learning_ai_common_plat/packages/*