[NoraSoong]

Summary

This PR strengthens Nexus's core context lifecycle without expanding its product scope.

• Add bounded, streaming material reads with UTF-8/UTF-16 support
• Enforce a 64 MiB safety limit and preserve head/tail excerpts for truncated files
• Stream MCP material pagination instead of loading whole files
• Retry once with a compacting prompt when model output is truncated
• Preserve answered clarification questions across re-preparation
• Simplify context preparation UI and keep internal details out of the default flow
• Split context pack persistence, workspace bindings, and projection publishing internally
• Align pre-alpha repository metadata and documentation with actual behavior

Validation

• swift format lint --recursive Sources Tests
• swift test — 81 tests passed
• npm run build
• npm run verify:stdio
• npm run verify:bindings
• npm run verify:file-policy
• npm run verify:context-payload
• npm audit --audit-level=high

Notes

This PR does not add code indexing, agent execution, automatic Git operations, or new task-management features.

A local Context Pack quality check confirmed source-backed claims and strong compression. The planned three-work model comparison remains pending because the external model test could not run in the current environment.