v0.3.0

Added

• leather workflow run — bounded one-shot tannery workflow execution from
  the CLI. The command ingests a hide from a file or stdin, resolves a curing
  by route or explicit --curing/--queue, starts the needed curing workers,
  drains queues to quiescence, and exits with clear status codes for success,
  runtime failure, timeout, or DLQ items.
• Outbound tool resilience — per-tool retry configuration, transient error
  classification, exponential backoff with optional Retry-After handling,
  per-host rate limits, outbound DLQ routing, leather dlq inspect/requeue,
  and tool retry/backoff/rate-limit/DLQ metrics.
• Queue poll interval configuration — poll_interval is now parsed from
  queue concurrency config and applied by workers, with a 1s default and faster
  intervals in examples/tests where short runs matter.
• Log file support — --log-file / LEATHER_LOG_FILE writes structured
  logs to a file and falls back cleanly to stderr when file setup fails.
• Concurrent git workflow example — examples/13-git-workflow-commit
  demonstrates leather workflow run with a planner curing that fans out
  per-file signed git commit tasks to executor curings.

Changed

• Git workflow agents, skills, and shell tools now collect fuller per-file
  diffs, use more concrete commit-message rules, avoid duplicate enqueue
  calls, and allow additional tool rounds for reliable metadata extraction.
• Raspberry Pi / Hailo examples use the dedicated rpi-01–rpi-03 namespace
  so mainline example numbering can continue independently.

Fixed

• leather workflow run now waits for both empty queues and in-flight worker
  handlers before declaring quiescence, preventing skipped Phase 1 commits and
  stale Phase 2 queue processing.
• leather workflow run sets LEATHER_INTAKE_URL before MCP servers start so
  child shell-MCP tools inherit the correct intake endpoint.
• Workflow help text, usage wiring, shell-tool diff caps, and git commit
  command handling were corrected to avoid confusing output and silent
  failures.