feat: add 4 template bundles (writing, backend, security, quick-fix)

Ready-to-use project templates with team, workflow, domain, and config:
- writing-short-story: fiction 5-15k words, custom archetypes, sonnet for prose
- backend-feature: standard PDCA, full team, haiku for reviews
- security-review: thorough 3-cycle, all reviewers incl. trickster
- quick-fix: minimal 1-cycle, creator+maker+guardian only

templates/bundles/backend-feature/config.yaml

@@ -0,0 +1,20 @@
+# Config: backend-feature defaults
+# Cost-optimized for typical backend work. Haiku handles most tasks well
+# for code — only upgrade to sonnet if review quality needs it.
+
+budget:
+  max_usd: 5              # Backend features are typically bounded
+  warn_at_pct: 80
+
+models:
+  default: haiku           # Haiku is sufficient for code tasks
+  explorer: haiku          # Codebase mapping is analytical
+  creator: haiku           # Design proposals are structural
+  maker: haiku             # Code generation — haiku handles well
+  guardian: haiku           # Security review — pattern matching
+  sage: haiku              # Quality review — checklist-driven
+
+variables:
+  max_cycles: 2
+  test_command: ""
+  lint_command: ""