Add maxDepth support to lazy schemas

[leoafarias]

Summary

• Adds maxDepth support to Ack.lazy and LazySchema for bounded recursive parse, runtime validation, and encode paths.
• Every Ack.lazy schema now defaults to a LazySchema.defaultMaxDepth cap of 100; pass a custom maxDepth (>= 1) to override it. There is no unlimited/uncapped opt-out.
• Returns a schema constraint error when the active lazy-schema recursion depth exceeds the configured cap.
• Preserves maxDepth through fluent copies, equality, hashing, runtime constraint counts, and schema maps.
• Bumps ack to 1.0.1 and documents the change with a link-only changelog entry, matching the 1.0.0 entry's style.

Validation

• dart test test/schemas/lazy_schema_test.dart
• dart analyze . --fatal-infos
• git diff --check

[Copilot]

Pull request overview

Adds recursion-depth bounding to Ack.lazy / LazySchema to prevent unbounded recursive parse/validate/encode by enforcing a maxDepth limit, and updates schema-model export metadata/tests accordingly.

Changes:

• Add maxDepth (defaulted) to LazySchema and expose it via Ack.lazy(..., {maxDepth}), enforcing a depth check during parse, runtime validation, and encode.
• Preserve maxDepth across fluent copies, toMap, equality/hashCode, and schema-model runtime-check warning counts.
• Add/adjust tests for maxDepth behavior and bump ack version + changelog entry.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/ack/lib/src/schemas/lazy_schema.dart	Implements maxDepth storage + enforcement and includes it in schema metadata/equality.
packages/ack/lib/src/ack.dart	Extends Ack.lazy API/docs to accept maxDepth and explains export warning behavior.
packages/ack/test/schemas/lazy_schema_test.dart	Updates warning-count expectation and adds maxDepth-focused tests.
packages/ack/pubspec.yaml	Bumps package version.
packages/ack/CHANGELOG.md	Adds a new release entry for the bumped version.

[leoafarias]

Good catch — the PR description was stale from an earlier draft. Updated it to say 1.0.1 (matching pubspec.yaml and CHANGELOG.md, both already correct).

[leoafarias]

Confirmed intentional, not a bug: the 100-level cap is now the default for every Ack.lazy schema, with no unlimited/uncapped opt-out — that's a deliberate design decision for this PR (not a regression to fix). Updated the PR description to describe this default-cap behavior accurately instead of the old 'uncapped unless configured' wording.