release: bump version 8.6.0 → 9.0.0 (Adversarial Audit)

[nullhack]

Summary

Major version bump with comprehensive adversarial audit of all knowledge files and skills.

Breaking

• Define-flow reorder: spec-validation → architecture → refine-features → validated (was refine-features before architecture). Architecture now finalizes quality_attributes, integration_points, and technology_stack before feature constraints are frozen.
• Architecture skippable: exits immediately via architecture-complete: ==verified when no changes needed.

Added

• Decomposition decision tree (behavioral grouping → Scenario Outline collapse → Must count → >8 splits)
• WSJF scoring wired into select-feature for subsequent features
• AI language markers expanded: +25 Tier 1 words, +4 Tier 4 phrases, new Tier 7 Claude-Specific Structural Patterns
• Domain spec template: Integration Points now requires Mechanism, Error handling, Ownership fields

Changed

• Adversarial audit: 47 knowledge files, 39 skills — deduplicated, stale content removed, cross-references aligned
• 10 skills: inline knowledge restatements replaced with references to canonical knowledge files
• 12 knowledge files: inline duplications replaced with cross-references
• Owner mapping consolidated to AGENTS.md only
• All user story format examples removed ("As the system, I want..." → "Rule with no beneficiary")

Removed

• spec-architecture.md — zero references, fully covered by other files
• rule-derivation.md — zero skill references, covered by spec-simulation + feature-discovery
• domain-modeling.md — merged into event-storming.md as Formalization subsection
• .flowr/viz/ — deferred to flowr package
• regenerate-flowviz task from pyproject.toml

Fixed

• gherkin.md:173 word constraint (3-8 → 2-6)
• Glossary template drift (3-8 → 2-6)
• versioning.md broken references
• create-domain-spec misrouted reference
• GitHub Skill and agent instructions should enforce mandatory artifact reads and explicit out-artifact lifecycle #143, Template: remove duplicate/redundant sections from technical_design.md.template #144, Spec-to-feature pipeline: executable .feature files never generated after spec update #159 resolved

71 files changed, 718 insertions, 2,197 deletions