Fix evolution CLI workspace DB scoping

[cursor]

Summary

• Fixes L2 evolution CLI/desktop JSON paths that ignored --workspace when opening the evolution SQLite DB.
• Uses an explicit workspace-derived chat root in command-layer evolution paths instead of mutating process-global SKILLLITE_WORKSPACE.
• Adds regressions for env-vs---workspace DB scoping and syncs EN/ZH L2 command docs.

Task Linkage

• Task ID: TASK-2026-068
• Task folder: tasks/TASK-2026-068-evolution-workspace-db-scope/

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)

Also followed: spec/verification-integrity.md, spec/task-artifact-language.md, spec/structured-signal-first.md, spec/capability-gap-evolution.md, spec/rust-conventions.md.

Validation Evidence

• Commands executed:
  • rustup update stable && rustup default stable && rustc --version && cargo --version
  • cargo run -p skilllite -- --help
  • Seeded pre-fix and post-fix CLI repro with SKILLLITE_WORKSPACE=env and --workspace target
  • cargo fmt --check
  • cargo test -p skilllite-commands --features agent
  • cargo test -p skilllite --test cli_evolution_workspace
  • cargo clippy --all-targets -- -D warnings
  • cargo test -p skilllite
  • cargo test
  • python3 scripts/validate_tasks.py
• Key results:
  • Pre-fix repro returned env_only and inserted authorization into env DB while --workspace pointed at target.
  • Post-fix repro returned target rows and inserted authorization into target DB only.
  • cargo test -p skilllite-commands --features agent: 39 passed; 0 failed.
  • cargo test -p skilllite --test cli_evolution_workspace: 1 passed; 0 failed.
  • cargo clippy --all-targets -- -D warnings: passed.
  • cargo test -p skilllite: passed.
  • cargo test: passed.
  • python3 scripts/validate_tasks.py: Task validation passed (68 task directories checked).

Regression Scope

• Areas likely affected:
  • skilllite evolution backlog
  • skilllite evolution status
  • skilllite evolution proposal-status
  • skilllite evolution authorize-capability
  • desktop proposal-status bridge invocation
• Explicit non-goals:
  • Broad evolution architecture refactors
  • SQLite schema changes
  • Workspace flag cleanup for legacy reset, disable, explain

Docs Sync (EN/ZH)

• Not needed
• Updated EN + ZH docs
• Files:
  • docs/en/ASSISTANT-SPLIT-ARCHITECTURE.md
  • docs/zh/ASSISTANT-SPLIT-ARCHITECTURE.md

Review Checklist

• Acceptance criteria in tasks/TASK-2026-068-evolution-workspace-db-scope/TASK.md satisfied
• tasks/TASK-2026-068-evolution-workspace-db-scope/STATUS.md updated with latest progress
• tasks/TASK-2026-068-evolution-workspace-db-scope/REVIEW.md includes merge readiness decision
• tasks/board.md status is up to date