feat: auto-scaled adversarial review (v0.9.5.0) (#297)

* feat: auto-scaled adversarial review by diff size

Replace config-driven Codex review step with automatic adversarial review
that scales by diff size: small (<50 lines) skips adversarial, medium
(50-199) gets cross-model adversarial, large (200+) gets all 4 passes.

Adds Claude adversarial subagent as fallback when Codex unavailable.
Review log uses new "adversarial-review" skill name with source/tier fields.
Dashboard updated to read both adversarial-review and legacy codex-review.

* chore: regenerate SKILL.md files for auto-scaled adversarial review

* chore: bump version and changelog (v0.9.5.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: allow user override of adversarial review tier

Users can now say "paranoid review", "run all passes", "full adversarial",
etc. to force the large tier regardless of diff size.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

VERSION

@@ -1 +1 @@
-0.9.5.0
+0.9.6.0