[Maintainability] Unused `analysisPreview` variable in `suggestCommand`

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Description

suggestCommand computes const analysisPreview = options.showDiff ? getPreview() : undefined; and never reads it again — the value is dead. It also re-triggers getPreview() (which throws if the preview wasn't built) for no effect, adding confusion to the --show-diff path.

Location

src/commands/suggest.ts line 242

Code

const analysisPreview = options.showDiff ? getPreview() : undefined;

(grep for analysisPreview shows it is only assigned, never used.)

Suggested fix

Delete the line. If a preview was meant to be passed through to the streaming/generation calls (e.g. to avoid recomputing truncation), wire it up as precomputedTruncation — the generateSuggestions/generateSuggestionsStream signatures already accept a precomputedTruncation parameter that callers never pass.

Impact

Dead code and a latent trap: calling getPreview() here throws if preview is undefined, so any future reordering of the --show-diff block can crash the command.