close review gaps, fix schema-DDL splitter, improve test coverage

[johnymontana]

Summary

Reviews the five community PRs merged since v0.13.1, fixes the gaps found reviewing them, adds test
coverage at every level of the CI pipeline, and preps the v0.14.0 release (changelog, docs, version bump).

Gaps closed in the merged PRs

• Fix self-hosted bolt backend ignoring non-default Neo4j database name -- i.e. Aura Free #60 (NEO4J_DATABASE) threaded the database through the generated app but not through
  scaffold-time ingest.py (_ingest_with_memory_client / _ingest_with_driver / reset_neo4j) or the
  scaffolded import_data.py bolt session — so --demo / --ingest / make import wrote to the
  default database while the app read from the configured one, silently producing an empty graph.
  All bolt sessions now honor it; validate_connection() gains a database param; .env.example
  documents the variable.
• Wire up --ontology-file (documented, never implemented) #58 (--ontology-file) produced scaffolds with no data/ontology.yaml (hand-written domains
  matched neither renderer branch). The raw YAML is now copied into the scaffold, the flag works
  through the wizard path, and --ontology-file + --custom-domain is an explicit error.
• Fix demo_scenarios[0] crash when demo_scenarios is omitted #59 (demo_scenarios crash) still crashed rendering when a scenario had an empty prompts list
  (legal per the Pydantic model). Hardened.
• Fix custom domain resolution in load_domain (#30) #52 (custom domain resolution) made the test suite non-hermetic: a contributor's saved
  ~/.create-context-graph/custom-domains/ leaked into every domain-iterating test (the
  "football-intelligence" failures reported while developing Fix self-hosted bolt backend ignoring non-default Neo4j database name -- i.e. Aura Free #60). An autouse conftest fixture
  isolates the directory.
• Handle NAMS cypher execution and connection guard #56 (NAMS cypher) was clean; it gains the behavioral coverage it shipped without.

Pre-existing bug exposed by the new integration coverage

Every schema-DDL consumer split on ; and skipped fragments starting with // — silently dropping
the five indexes/constraints behind comment headers (person_name, document_title,
document_domain, document_name_unique, local_file_fulltext were never created by
make seed/ingest) and executing a comment tail as garbage Cypher (CypherSyntaxError on every
schema apply). New shared split_cypher_statements() fixes ingest.py, the generated
generate_data.py, and test_integration.py.

Test coverage added (all in existing CI jobs)

• Unit: new tests/test_generated_client_runtime.py (26 tests) executes the rendered
  context_graph_client.py + memory.py against doubles — NAMS dispatch/coercion/tool events,
  bolt database= threading, store_message error recording, /health error classifier. Plus +12 CLI,
  +5 wizard, +17 template-pin, +9 ontology, +3 custom-domain tests.
• App-level: +6 in test_routes_integration.py — /cypher on NAMS, 503 guards, live store
  failure flipping /health to degraded and recovering.
• Integration (--integration): explicit-database ingest, validate_connection accept/reject,
  schema DDL asserted to create the previously-dropped indexes.
• E2E: generated test_routes.py gains two backend-specific /health tests (slow runner now also
  scaffolds a bolt project and asserts they ran); e2e_smoke_test.py asserts the /health contract
  shape per backend.

Release prep

CHANGELOG.md v0.14.0 section (features credited per PR author), version 0.13.1 → 0.14.0
(pyproject.toml, __init__.py, uv.lock), docs updated (cli-options.md, Aura guide,
custom-domain guide, generated-project-structure, whats-new.md, generated README), CLAUDE.md
status + counts refreshed. No CI workflow changes needed.

Test plan

• Fast suite: 1,429 passed, 262 skipped (was 1,349)
• Full --slow --functional suite (CI matrix job): 1,677 passed
• pytest tests/test_integration.py --integration vs throwaway Neo4j 5: 10/10 (2 pre-existing failures fixed)
• Generated test suites executed in real venvs for NAMS and bolt scaffolds
• ruff check src/ tests/ scripts/ clean