Add download progress indicator for CLI #9032
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Implements GitHub issue #9009: Package download status indicator. Changes: - Add progress.zig with ProgressState, spinner animation, and progress bar - Add TTY detection to skip ANSI codes when stderr is piped/redirected - Add VirtualTerminal for deterministic screenshot testing - Add ANSI cursor control codes to style.zig - Display download status in CLI when fetching packages The progress display shows: - Spinner animation - Package name (extracted from URL) - Progress bar with percentage (when size is known) - Human-readable size (KB/MB) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Zig lints disallow separator comments (// ====). Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Implements #9009: Package download status indicator.
During download:
When complete:
Test plan
roc runon project with uncached dependency🤖 Generated with Claude Code