MVP: Wire web to @worksight/common data/types/utils

[kuyacarlo]

Parent: #14

Bottom line

Wire web app pages/stores to @worksight/common/data + utils + types so dashboards render fixture employees, tasks, surveys, burnout, datasources.

Done means

• At least employees + tasks + survey views use common package (not duplicated local mocks)
• Imports go through package exports (@worksight/common, /data, /types, /utils)
• No silent fallback to empty arrays when fixtures exist

[kuyacarlo]

Handoff: https://github.com/4sightorg/worksight/blob/docs/mvp-handoffs/docs/handoffs/2026-07-25-wire-web-common.md

[kuyacarlo]

Implemented on feat/mvp-wire-web (8e52718). PR opening against stabilize.