Fix critical evolution run path regressions

[cursor]

Summary

• Fixes a crash in human skilllite evolution status output when an evolution log reason is longer than the display limit and contains multibyte UTF-8 text.
• Aligns evolution run and agent A9 evolved-skill output with the desktop pending-skill resolver: prefer skills/, fall back to legacy .skills/.
• Scopes Life Pulse and post-authorize background evolution subprocesses with explicit --workspace (and --proposal-id for authorized proposals).

Task Linkage

• Task ID: TASK-2026-069
• Task folder: tasks/TASK-2026-069-critical-evolution-run-fixes/

Injected Specs

• spec/architecture-boundaries.md (if architecture/layering changed)
• spec/security-nonnegotiables.md (if sandbox/security changed)
• spec/testing-policy.md (required for any code change)
• spec/docs-sync.md (if behavior/docs/env/commands changed)

Validation Evidence

• Commands executed:
  • rustup update stable && rustup default stable
  • cargo test -p skilllite-commands --features agent
  • cargo test -p skilllite-agent
  • cd crates/skilllite-assistant/src-tauri && cargo test
  • cargo fmt --check
  • cargo clippy --all-targets -- -D warnings
  • cargo test
  • python3 scripts/validate_tasks.py
• Key results:
  • skilllite-commands: 43 passed.
  • skilllite-agent: 247 passed.
  • skilllite-assistant src-tauri: 51 passed.
  • Root workspace cargo test: passed.
  • Task validation passed (69 task directories checked).

Regression Scope

• Areas likely affected:
  • Evolution CLI status rendering.
  • Evolution run evolved-skill output paths.
  • Desktop Life Pulse and post-authorize background evolution subprocess invocation.
• Explicit non-goals:
  • API/provider credential flow changes.
  • Sandbox/security policy changes.
  • Python SDK behavior.

Docs Sync (EN/ZH)

• Not needed
• Updated EN + ZH docs
• Files:
  • N/A: no CLI contract, flag, env var, or documentation semantics changed.

Review Checklist

• Acceptance criteria in tasks/.../TASK.md satisfied (or explicitly deferred)
• tasks/.../STATUS.md updated with latest progress
• tasks/.../REVIEW.md includes merge readiness decision
• tasks/board.md status is up to date