reconcile 0.3.0

A reconciliation storage service to sync a key-value map over multiple instances
# Two tiers on project (overall, post-PR) coverage: `warning` never blocks and flags any drop
# below 100%; `minimum` blocks (informational: false) if the project falls below 90% -- current
# is ~93.8% line coverage (cargo llvm-cov --workspace --all-features), so this has real margin,
# not a threshold picked to always pass. `default: false` retires the old single unnamed status
# these two replace. See README "Testing and coverage" for what actually enforces `minimum`
# (this file alone posts a status; branch protection is what makes it block a merge).
#
# patch (just the PR's changed lines) stays informational-only, deliberately not given a
# `minimum` twin: CONTRIBUTING.md "why coverage isn't enough" is exactly about not trusting
# a coverage number, delta or absolute, to gate an individual change -- that is the mutation
# gate's job. A per-PR patch floor would fight that same-file argument on a small diff, where
# one hard-to-reach line swings the percentage the most.
coverage:
  status:
    project:
      default: false
      warning:
        target: 100%
        informational: true
      minimum:
        target: 90%
        informational: false
    patch:
      default:
        informational: true
comment:
  layout: "reach, diff, files"
  require_changes: true