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/airouter-impl-narrow@1.yaml

@@ -0,0 +1,25 @@
+name: airouter-impl-narrow
+version: 1
+description: Single-file impl of a tagged spec requirement against existing tests, airouter in worktree
+runtime: code-airouter-tdd-repo
+input:
+  state: test-validated
+  tags_required: [airouter-eligible]
+  tags_forbidden: [security-sensitive, multi-file, algorithmic-large]
+  required_artifacts: [test_file, impl_skeleton, prompt_pack]
+output:
+  state: impl-green
+scope_budget:
+  files_modified_max: 1
+  lines_diff_max: 80
+  wall_clock_seconds_max: 1800
+nodes:
+  - id: agent
+    kind: agent
+    template: code-airouter-tdd-repo
+    prompt: "Implement the failing test. Test file: ${artifacts.test_file}. Skeleton: ${artifacts.impl_skeleton}."
+escalation:
+  fixture_broken: fix-test-fixture-sonnet
+  contract_ambiguous: review-spec-opus
+  scope_exceeded: replan-spec-opus
+  agent_bailed: airouter-impl-narrow