feat: Add pu recap command

[2witstudios]

Summary

• Adds a new pu recap CLI command that gives a standup-style summary of workspace activity
• Combines existing daemon Status and Diff queries into a single glanceable view — no protocol changes needed
• Shows per-worktree agent statuses with elapsed times, git diff stats (+/- lines, files changed), and workspace totals
• Supports --json for machine-readable output

Example output

Workspace Recap
────────────────────────────────────────
  3 agents across 2 worktrees

  root (project root)
    point-guard  claude     waiting            12m

  fix-auth pu/fix-auth
    worker       claude     done               15m
  3 files +47 -12

  add-tests pu/add-tests
    worker       claude     streaming          10m
  5 files +230

────────────────────────────────────────
  8 files changed, +277, -12

Test plan

• 14 unit tests covering formatting, edge cases, empty state, JSON output
• All 84 existing pu-cli tests still pass
• Manual test: pu recap with active workspace
• Manual test: pu recap --json for machine-readable output

🤖 Generated with Claude Code

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 3719ca61-19bf-4f88-bc59-724dca2e7977

📥 Commits

Reviewing files that changed from the base of the PR and between 55aa882 and 5840239.

⛔ Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (4)

• crates/pu-cli/Cargo.toml
• crates/pu-cli/src/commands/mod.rs
• crates/pu-cli/src/commands/recap.rs
• crates/pu-cli/src/main.rs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch pu/feature-1

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[2witstudios]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.

🤖 Generated with Claude Code