[nmrtist]

Summary

Record and revisit manual peaks directly in 3D spectra, with stable IDs and acquisition-axis coordinates across slices and project reloads.

• Add linked peak picking, dragging, deletion and notes, with one undo step per edit and shared desktop, CLI and MCP operations.
• Preserve peak positions through phase changes, refresh signed sampled heights, and export JSON with axis identities and acquisition/processing provenance.
• Give 3D phase settings a separate entry that ends peak picking; retain standalone 1D/2D phase settings and interactive tools. Update English and Chinese documentation.

Validation

• cargo pr-check — passed, including numerical, UI interaction and CLI/MCP regression tests.
• npm run build in docs/ — passed.
• Headless UI acceptance on three local 3D NMR datasets — passed: peak editing, table navigation in all three orientations, undo/redo, project reload and JSON export.

UI display logic

• New or changed actions go through the command catalog (CommandId +
  describe) and are searchable in the command palette.
• Hiding happens only at Ribbon-group level (dataset kind or width
  budget); transient states disable with a disabled_reason that says how
  to unblock.
• No layout changes from background events; panels are never auto-closed.
• New panels or empty regions show an empty state with a next step.
• Docs updated in docs/ (English and zh-CN) for user-visible behavior.