[nmrtist]

Summary

Use one Phase command for 1D, 2D and 3D spectra, with explicit targets, acquisition axes and processing scope.

• Route standalone spectra to canvas phasing and 3D spectra to the whole-volume editor; remove duplicate entries and keep command gating consistent with the interaction target.
• Label acquisition axes and display roles, and support ppm pivots with PH0 compensation that preserves the phase correction.
• Keep drafts and background results tied to their spectrum and project. Invalidate stale drafts across undo, and distinguish applying, discarding, stopping and closing.
• Update the English and Simplified Chinese guides.

Validation

• cargo pr-check — passed. Regression coverage includes command routing, axis mapping, draft invalidation, project changes, cancellation, result installation and pivot invariance against the NMR processing engine.
• npm run build in docs/ — passed, generating 123 pages.
• Manual Windows GUI acceptance — passed.
• git diff --check — passed.

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.