v0.10.0

• Changed. Matching indexes routes by method, segment count and first
  literal segment instead of scanning every operation and every one of its
  servers on each request. On a thousand-operation document a validated request
  went from 0.83 ms to 0.006 ms, and the cost no longer grows with the
  document. Selection is unchanged by construction: each key is a property
  matchPath() checks before anything else, and candidates are ordered by a
  comparator that ends on the unique operation key, so the winner never
  depended on the order they were collected in.

• Added. Two examples: gate-a-request.php (the shape a PSR-15 middleware
  takes, over a multi-file document) and budgets.php (Limits, and why
  *.body.too_large is a refusal to read rather than a verdict).

• Documentation. Three divergences from the specification are now written
  down rather than merely true: a percent-encoded delimiter inside a
  pipeDelimited/spaceDelimited value is folded into the delimiter, a Header
  Object carrying name/in is ignored rather than refused, and example
  with examples are both kept instead of being refused as mutually exclusive.
  No behaviour changed: the first agrees with how a PHP application reads the
  same query, and changing it would break that agreement to gain agreement with
  the text.

• Fixed. A YAML document under a kilobyte could exhaust memory and die with
  a fatal error rather than an InvalidContract. Anchors and aliases expand
  inside the parser, before any budget measures anything, and the byte budget
  measures the file; the reference resolver's own budget counts only the nodes
  it descends into, and it rightly does not descend into data — which is where
  an alias is just as welcome. Nine levels of anchors in an enum turned 772
  bytes into 387 million nodes. Documents are now measured by what they expand
  into, at every entry point and shared across a multi-file graph.

• Added. Limits::$documentNodes (default 5 000 000, constant
  Limits::DEFAULT_DOCUMENT_NODES) — the budget above. It sits above what any
  document within documentBytes can hold, so it refuses amplification without
  refusing size. Counting stops at the budget, so an oversized document costs
  the budget rather than its own size.

• Changed. The message-reading trait joined the mutation gate's coverage
  map: it was in no #[Covers], and so produced no mutants at all — the body
  reading loop, its byte-budget comparison included, was outside the gate. The
  package's own AGENTS.md names that as the symptom.