fix(task): use terminal width instead of hardcoded 60-char limit for task display

[jdx]

Summary

• Replace hardcoded 60-character truncation limit in Task Display implementation with terminal-width-based calculation
• Use console::measure_text_width() to properly handle ANSI color codes
• Fix premature truncation of task commands in CI environments and wide terminals
• Ensure minimum 20 characters shown even with very long task names/prefixes

Changes Made

• Import console::measure_text_width in src/task/mod.rs
• Replace truncate_str(cmd, 60, "…") with dynamic width calculation in Task Display
• Calculate max width as TERM_WIDTH - prefix_len - 4 with 20-char minimum
• Fix both Display implementation AND runtime truncation logic in src/cli/run.rs
• Add comprehensive e2e test to verify truncation behavior works correctly
• Maintain consistent truncation behavior across all task output scenarios

Before vs After

Before: Tasks were always truncated at 60 characters regardless of terminal width

[very-long-task-name-that-exceeds-sixty-characters-to-test] $ echo "…

After: Tasks respect terminal width and show minimum 20 chars even with long prefixes

[very-long-task-name-that-exceeds-sixty-characters-to-test] $ echo "this is a v…

Test plan

• Unit tests pass
• Lint checks pass
• E2e test test_task_display_truncation passes
• Task display now respects terminal width instead of 60-char hard limit
• ANSI color codes are properly handled in width calculations
• Very long task names still show meaningful command text

Fixes task output truncation issue where commands were being cut off at 60 characters regardless of terminal size or color formatting. The fix ensures both display and runtime truncation use consistent, intelligent width calculations.

🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

Fixes task display truncation by replacing a hardcoded 60-character limit with dynamic terminal width calculation. This prevents premature truncation of task commands in CI environments and wide terminals.

• Import measure_text_width from console module to handle ANSI color codes properly
• Replace hardcoded 60-character limit with dynamic calculation based on terminal width
• Calculate max width by subtracting prefix length and buffer space from terminal width

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[Copilot]

The magic number 4 should be defined as a named constant to improve code readability and maintainability. Consider defining const DISPLAY_BUFFER: usize = 4; at the module level.

[github-actions]

Hyperfine Performance

mise x -- echo

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.5 x -- echo	18.4 ± 0.4	17.9	23.4	1.00 ± 0.02
mise x -- echo	18.4 ± 0.2	17.9	19.8	1.00

mise env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.5 env	17.8 ± 0.3	17.3	21.3	1.00 ± 0.03
mise env	17.7 ± 0.4	17.3	23.3	1.00

mise hook-env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.5 hook-env	17.4 ± 0.2	16.9	18.6	1.01 ± 0.02
mise hook-env	17.3 ± 0.2	17.0	18.5	1.00

mise ls

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.5 ls	15.9 ± 0.3	15.4	19.0	1.00 ± 0.02
mise ls	15.8 ± 0.2	15.4	17.3	1.00

xtasks/test/perf

Command	mise-2025.9.5	mise	Variance
install (cached)	163ms	✅ 101ms	+61%
ls (cached)	61ms	61ms	+0%
bin-paths (cached)	65ms	65ms	+0%
task-ls (cached)	467ms	469ms	+0%

✅ Performance improvement: install cached is 61%