Compact Program edit MCP context

[edwin-zvs]

Summary

• replace padded Program block ids with compact program-scoped refs (b0:0) and migrate persisted padded ids on access
• replace the MCP edit shimmer array with compact pending, settled, and settle_others inputs; allow status-only calls with no fake text edit
• return a compact MCP acknowledgement containing only new/changed block refs and a small run rollup instead of echoing the full document, full block projection, and active-run internals
• shorten the tool description and update autonomous Run instructions and normative specs

This intentionally breaks the previous construct_program_edit MCP argument/result shape. Rich daemon IPC results remain unchanged for TUI/web clients.

Verification

• cargo test -p construct-daemon program_ --lib (100 passed)
• cargo test -p construct-mcp --lib (13 passed)
• focused autonomous Run prompt/context tests
• cargo build
• git diff --check

No recording: this is an MCP/protocol context optimization with no user-visible TUI rendering change.