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/manifest.yaml

@@ -0,0 +1,19 @@
+# Bundle: backend-feature
+# Standard setup for backend feature implementation: API endpoint, DB migration, tests.
+# Uses the standard PDCA pipeline with 2 review cycles.
+
+name: backend-feature
+description: "Backend feature implementation — API, DB migration, tests (standard PDCA)"
+version: "1.0.0"
+domain: code
+includes:
+  team: team.yaml
+  workflow: workflow.yaml
+  domain: domain.yaml
+  config: config.yaml
+  archetypes: []
+requires: []
+variables:
+  max_cycles: 2            # PDCA review cycles
+  test_command: ""         # Override: pytest, cargo test, npm test, etc.
+  lint_command: ""         # Override: ruff, clippy, eslint, etc.