feat: migrate missing harnesses, templates, and workflows from agent-runtimes

Brings the framework CRS repo up to date with all content that was
living in agent-runtimes (local-dev fallback) but hadn't been promoted.

New composites: feature-delivery-loop, integration-direct, scaffolding-repo,
sonnet-impl-narrow, sonnet-manager, test-writing-repo

New contexts: integration/v1, scaffolding/v1, sonnet-manager/v1, z-ai/v1,
airouter/v1/bin (anthropic-compat-wrapper.sh), cp-harness/v1/init.sh

New task-templates: sonnet-integrator.yaml, workflow/* (17 typed workflow
task templates for the Epic 1 pipeline)

Updated: agent-repo/v1/finalize.sh — adds AR-38/F97 empty-deliverable audit
(SKIP_BRANCH_PUSH support, boilerplate-path filtering, ci_metadata.json flag)

Also adds MEMORY.md index and memory/ topic files for the framework repo.

task-templates/workflow/scaffold@1.yaml

@@ -0,0 +1,38 @@
+name: scaffold
+version: 1
+description: Write stub implementations satisfying test signatures before coding begins (WT-PIPE-3)
+runtime: scaffolding-repo
+input:
+  state: tests-written
+  tags_forbidden: []
+  required_artifacts: []
+output:
+  state: scaffolded
+scope_budget:
+  files_modified_max: 5
+  lines_diff_max: 300
+  wall_clock_seconds_max: 1800
+nodes:
+  - id: agent
+    kind: agent
+    template: scaffolding-repo
+    prompt: |
+      Write stub implementations for the following task.
+
+      Work item UUID: ${item.uuid}
+      Test files: ${metadata.automation.test_files}
+      Spec IDs: ${metadata.automation.spec_ids}
+      Task description: ${item.body}
+
+      Read the test files on the work branch to identify what functions, classes,
+      and modules need to exist. Write minimal stub implementations:
+      - Correct signatures and type hints
+      - Bodies: raise NotImplementedError("spec-id: description") — no real logic
+      - Minimal Pydantic model fields where needed
+
+      Verify stubs compile and tests still collect (they should remain xfail):
+        python -m py_compile <files>
+        python -m pytest --collect-only ${metadata.automation.test_files}
+
+      Commit and push to the work branch. The coding agent will implement
+      real logic on top of these stubs.