feat(reusable): ship the curated swarm as the default config consumers inherit

Make the reusable workflow's input defaults BE the standard Gadfly swarm so a
consumer subscribes by just calling it (no `with:` block) and inherits:
- models: 3 strong cloud (minimax-m3, glm-5.2, deepseek-v4-pro) + Claude Code
  (sonnet, opus, opus:max)
- specialists: the 5-lens default suite (security, correctness, maintainability,
  performance, error-handling)
- provider_concurrency: ollama-cloud=3,claude-code=3 (all three claudes at once)
- timeout_minutes default 45 -> 90 (5 lenses x 2 passes over a slow lane)

The default is opinionated (needs OLLAMA_CLOUD_API_KEY + CLAUDE_CODE_OAUTH_TOKEN);
consumers override `models:` for cloud-only / other providers. gadfly's own
caller is slimmed to inherit (only allowed_users remains). examples/reusable.yml
keeps a cloud-only `models:` override so a public copy works with just the
Ollama key. README/CLAUDE.md updated.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitea/workflows/adversarial-review.yml

@@ -1,10 +1,10 @@
-# Gadfly reviewing its OWN PRs — now a thin CALLER of the reusable workflow
-# (.gitea/workflows/review-reusable.yml), dogfooding the Phase-4 "subscribe"
-# path. The reusable holds the image pin + env plumbing; this file holds only
-# the triggers, the actor gate, and gadfly's specific swarm config.
+# Gadfly reviewing its OWN PRs — a thin CALLER of the reusable workflow
+# (.gitea/workflows/review-reusable.yml), dogfooding the "subscribe" path. The
+# reusable holds the image pin, env plumbing, AND the default swarm; this file
+# holds only the triggers, the actor gate, secret forwarding, and allow-list.
 #
-# Advisory only — never blocks a merge. Fleet: 6 cloud + Claude Code
-# (sonnet, opus, opus:max) competitors.
+# Advisory only — never blocks a merge. It inherits the default swarm: 3 cloud
+# models + Claude Code (sonnet, opus, opus:max), 5-lens suite, 3 claudes at once.
 
 name: Adversarial Review (Gadfly)
 
@@ -48,11 +48,7 @@ jobs:
       GADFLY_FINDINGS_URL:     ${{ secrets.GADFLY_FINDINGS_URL }}
       GADFLY_FINDINGS_TOKEN:   ${{ secrets.GADFLY_FINDINGS_TOKEN }}
     with:
-      models: "minimax-m3:cloud,glm-5.2:cloud,glm-5.1:cloud,deepseek-v4-pro:cloud,nemotron-3-super:cloud,qwen3-coder:480b-cloud,claude-code/sonnet,claude-code/opus,claude-code/opus:max"
-      specialists: "security,correctness,error-handling"
-      provider_concurrency: "ollama-cloud=3,claude-code=2"
-      provider_lens_concurrency: "ollama-cloud=3"
-      timeout_secs: "600"
-      max_steps: "14"
+      # Inherit the default swarm (3 cloud + Claude Code sonnet/opus/opus:max,
+      # 5-lens suite, all three claudes concurrent) from review-reusable.yml.
+      # Only the consumer-specific allow-list is set here.
       allowed_users: "steve,fizi,dazed"
-      timeout_minutes: 90