Work Charter v0.7.1

Work Charter v0.7.1 is the first public release since v0.6.5. It includes the
accepted v0.6.6–v0.7.1 changes; those intermediate candidates were not released
separately.

What's changed

• Delivery and recovery: Keep authorized work moving through implementation,
  independent review and acceptance without per-message receipt loops. Preserve
  formed decisions, evidence, failed attempts and consumed limits across task
  or context changes.
• Evidence scope: Separate material acquired from material actually examined.
  Carry inspection gaps, source identity and data boundaries through delegated
  evidence collection and recovery.
• Roles and model defaults: Clarify approved Planner delegation, the
  preauthorized Reviewer → original Executor → same Reviewer repair path, and
  Planner acceptance. The package defaults use Sol/xhigh for L0–L2 primary and
  Reviewer and L3–L4 Executor; Astra/high for L3–L4 Planner and L4 Orchestrator;
  Astra/medium for L3–L4 Reviewer. Existing tasks and user configuration are
  not changed by these package defaults.
• Authorization by result: Describe approval by outcome, functional domain,
  environment, effects and real cost. Ordinary file lists, tools, check order
  and same-scope repairs stay replaceable within that authority. Explicit
  permission, production, managed-path, frozen-evidence, compatibility,
  one-shot, independent-review and acceptance boundaries remain binding.

The installable Skill remains a six-file package. This release does not
automatically activate Work Charter, change existing tasks or prove runtime
loading, natural adherence or performance gains. See CHANGELOG.md and
docs/skills/work-charter/VERIFICATION.md for version history and check scope.