[longquanzheng]

Summary

Remove text from the agent rule files (CLAUDE.md, AGENTS.md, .cursor/rules) that still describes the removed Go Server and the Temporal and Cadence backends. The three rule sets stay in sync.

• Drop area:server from the allowed area labels.
• Rewrite the User-Facing Concept Boundary around server-zd engine internals (apply, commands, partitions, history mechanics). The Continue-As-New exception stays, because the SDKs and server-zd still support it.
• Remove the Go-specific config injection rules (config.Config, cfg *config.XyzConfig). No remaining Go code uses that pattern. Constructor injection and the no-post-construction-wiring rule stay. The Rust equivalents are in the server-zd conventions.
• Remove the Temporal Web references from the UI/UX rules.

Why

#1059 removed the Temporal-based Go Server; only server-zd remains. The rules still told agents to name "the backend" in operations docs, to avoid Temporal and Cadence internals, and to inject config.Config sections. A grep for config.Config and XyzConfig across sdk-go, cli, examples and server-zd/integ finds no use. Agents following these rules were being steered by a component that no longer exists. The area:server label itself is being retired separately.

Testing

Rule text only. No code changed.

doc-map: no change needed: agent rule files are not mapped docs or skills.