diff --git a/catalog/components.yml b/catalog/components.yml
index e79089e..96d8e75 100644
--- a/catalog/components.yml
+++ b/catalog/components.yml
@@ -262,27 +262,27 @@ components:
 
   # Data engines. A project may select at most one provider for each role.
   - {id: sqlite, name: SQLite, layer: data, tier: stable, roles: [sql], python: ">=3.11,<3.15"}
-  - {id: postgresql, name: PostgreSQL, layer: data, tier: stable, roles: [sql], python: ">=3.11,<3.15"}
-  - {id: mysql, name: MySQL, layer: data, tier: stable, roles: [sql], python: ">=3.11,<3.15"}
-  - {id: duckdb, name: DuckDB, layer: data, tier: stable, roles: [sql], python: ">=3.11,<3.15"}
-  - {id: supabase, name: Supabase, layer: data, tier: platform, roles: [sql, document], python: ">=3.11,<3.15"}
-  - {id: mongodb, name: MongoDB, layer: data, tier: stable, roles: [document], python: ">=3.11,<3.15"}
-  - {id: beaver, name: Beaver, layer: data, tier: stable, roles: [document, vector, graph, cache], python: ">=3.12,<3.15"}
-  - {id: pgvector, name: pgvector, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15"}
-  - {id: qdrant, name: Qdrant, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15"}
-  - {id: chroma, name: Chroma, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15"}
-  - {id: lancedb, name: LanceDB, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15"}
-  - {id: weaviate, name: Weaviate, layer: data, tier: platform, roles: [vector], python: ">=3.11,<3.15"}
-  - {id: pinecone, name: Pinecone, layer: data, tier: platform, roles: [vector], python: ">=3.11,<3.15"}
-  - {id: milvus, name: Milvus, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15"}
-  - {id: neo4j, name: Neo4j, layer: data, tier: stable, roles: [graph], python: ">=3.11,<3.15"}
-  - {id: redis, name: Redis, layer: data, tier: stable, roles: [cache], python: ">=3.11,<3.15"}
+  - {id: postgresql, name: PostgreSQL, layer: data, tier: stable, roles: [sql], python: ">=3.11,<3.15", packages: ["psycopg[binary]>=3.3.4,<4"]}
+  - {id: mysql, name: MySQL, layer: data, tier: stable, roles: [sql], python: ">=3.11,<3.15", packages: ["pymysql>=1.2.0,<2"]}
+  - {id: duckdb, name: DuckDB, layer: data, tier: stable, roles: [sql], python: ">=3.11,<3.15", packages: ["duckdb>=1.5.5,<2", "duckdb-engine>=0.17.0,<1"]}
+  - {id: supabase, name: Supabase, layer: data, tier: platform, roles: [sql, document], python: ">=3.11,<3.15", packages: ["supabase>=2.31.0,<3"]}
+  - {id: mongodb, name: MongoDB, layer: data, tier: stable, roles: [document], python: ">=3.11,<3.15", packages: ["pymongo>=4.17.0,<5"]}
+  - {id: beaver, name: Beaver, layer: data, tier: stable, roles: [document, vector, graph, cache], python: ">=3.12,<3.15", packages: ["beaver-db>=2.3.0,<3"]}
+  - {id: pgvector, name: pgvector, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15", packages: ["pgvector>=0.5.0,<1"]}
+  - {id: qdrant, name: Qdrant, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15", packages: ["qdrant-client>=1.19.0,<2"]}
+  - {id: chroma, name: Chroma, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15", packages: ["chromadb>=1.5.9,<2"]}
+  - {id: lancedb, name: LanceDB, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15", packages: ["lancedb>=0.36.0,<1"]}
+  - {id: weaviate, name: Weaviate, layer: data, tier: platform, roles: [vector], python: ">=3.11,<3.15", packages: ["weaviate-client>=4.22.0,<5"]}
+  - {id: pinecone, name: Pinecone, layer: data, tier: platform, roles: [vector], python: ">=3.11,<3.15", packages: ["pinecone>=9.1.0,<10"]}
+  - {id: milvus, name: Milvus, layer: data, tier: stable, roles: [vector], python: ">=3.11,<3.15", packages: ["pymilvus>=3.0.1,<4"]}
+  - {id: neo4j, name: Neo4j, layer: data, tier: stable, roles: [graph], python: ">=3.11,<3.15", packages: ["neo4j>=6.2.0,<7"]}
+  - {id: redis, name: Redis, layer: data, tier: stable, roles: [cache], python: ">=3.11,<3.15", packages: ["redis>=8.1.0,<9"]}
 
-  - {id: sqlmodel, name: SQLModel, layer: sql_abstraction, tier: stable, python: ">=3.11,<3.15"}
-  - {id: sqlalchemy, name: SQLAlchemy, layer: sql_abstraction, tier: stable, python: ">=3.11,<3.15"}
+  - {id: sqlmodel, name: SQLModel, layer: sql_abstraction, tier: stable, python: ">=3.11,<3.15", packages: ["sqlmodel>=0.0.39,<0.1", "sqlalchemy>=2.0.51,<3", "alembic>=1.19.1,<2"]}
+  - {id: sqlalchemy, name: SQLAlchemy, layer: sql_abstraction, tier: stable, python: ">=3.11,<3.15", packages: ["sqlalchemy>=2.0.51,<3", "alembic>=1.19.1,<2"]}
   - {id: api-key, name: API key, layer: auth, tier: stable, python: ">=3.11,<3.15"}
-  - {id: oidc, name: OAuth / OIDC, layer: auth, tier: platform, python: ">=3.11,<3.15"}
-  - {id: supabase-auth, name: Supabase Auth, layer: auth, tier: platform, python: ">=3.11,<3.15"}
+  - {id: oidc, name: OAuth / OIDC, layer: auth, tier: platform, python: ">=3.11,<3.15", packages: ["authlib>=1.7.2,<2"]}
+  - {id: supabase-auth, name: Supabase Auth, layer: auth, tier: platform, python: ">=3.11,<3.15", packages: ["supabase>=2.31.0,<3"]}
 
   - {id: bentoml, name: BentoML, layer: serving, tier: stable, python: ">=3.11,<3.15"}
   - {id: litellm, name: LiteLLM, layer: serving, tier: stable, python: ">=3.11,<3.15"}
diff --git a/catalog/generated/catalog.json b/catalog/generated/catalog.json
index 5126a8c..664f85c 100644
--- a/catalog/generated/catalog.json
+++ b/catalog/generated/catalog.json
@@ -781,7 +781,9 @@
       "roles": [
         "sql"
       ],
-      "packages": []
+      "packages": [
+        "psycopg[binary]>=3.3.4,<4"
+      ]
     },
     {
       "id": "mysql",
@@ -793,7 +795,9 @@
       "roles": [
         "sql"
       ],
-      "packages": []
+      "packages": [
+        "pymysql>=1.2.0,<2"
+      ]
     },
     {
       "id": "duckdb",
@@ -805,7 +809,10 @@
       "roles": [
         "sql"
       ],
-      "packages": []
+      "packages": [
+        "duckdb>=1.5.5,<2",
+        "duckdb-engine>=0.17.0,<1"
+      ]
     },
     {
       "id": "supabase",
@@ -818,7 +825,9 @@
         "sql",
         "document"
       ],
-      "packages": []
+      "packages": [
+        "supabase>=2.31.0,<3"
+      ]
     },
     {
       "id": "mongodb",
@@ -830,7 +839,9 @@
       "roles": [
         "document"
       ],
-      "packages": []
+      "packages": [
+        "pymongo>=4.17.0,<5"
+      ]
     },
     {
       "id": "beaver",
@@ -845,7 +856,9 @@
         "graph",
         "cache"
       ],
-      "packages": []
+      "packages": [
+        "beaver-db>=2.3.0,<3"
+      ]
     },
     {
       "id": "pgvector",
@@ -857,7 +870,9 @@
       "roles": [
         "vector"
       ],
-      "packages": []
+      "packages": [
+        "pgvector>=0.5.0,<1"
+      ]
     },
     {
       "id": "qdrant",
@@ -869,7 +884,9 @@
       "roles": [
         "vector"
       ],
-      "packages": []
+      "packages": [
+        "qdrant-client>=1.19.0,<2"
+      ]
     },
     {
       "id": "chroma",
@@ -881,7 +898,9 @@
       "roles": [
         "vector"
       ],
-      "packages": []
+      "packages": [
+        "chromadb>=1.5.9,<2"
+      ]
     },
     {
       "id": "lancedb",
@@ -893,7 +912,9 @@
       "roles": [
         "vector"
       ],
-      "packages": []
+      "packages": [
+        "lancedb>=0.36.0,<1"
+      ]
     },
     {
       "id": "weaviate",
@@ -905,7 +926,9 @@
       "roles": [
         "vector"
       ],
-      "packages": []
+      "packages": [
+        "weaviate-client>=4.22.0,<5"
+      ]
     },
     {
       "id": "pinecone",
@@ -917,7 +940,9 @@
       "roles": [
         "vector"
       ],
-      "packages": []
+      "packages": [
+        "pinecone>=9.1.0,<10"
+      ]
     },
     {
       "id": "milvus",
@@ -929,7 +954,9 @@
       "roles": [
         "vector"
       ],
-      "packages": []
+      "packages": [
+        "pymilvus>=3.0.1,<4"
+      ]
     },
     {
       "id": "neo4j",
@@ -941,7 +968,9 @@
       "roles": [
         "graph"
       ],
-      "packages": []
+      "packages": [
+        "neo4j>=6.2.0,<7"
+      ]
     },
     {
       "id": "redis",
@@ -953,7 +982,9 @@
       "roles": [
         "cache"
       ],
-      "packages": []
+      "packages": [
+        "redis>=8.1.0,<9"
+      ]
     },
     {
       "id": "sqlmodel",
@@ -963,7 +994,11 @@
       "python": ">=3.11,<3.15",
       "workloads": [],
       "roles": [],
-      "packages": []
+      "packages": [
+        "sqlmodel>=0.0.39,<0.1",
+        "sqlalchemy>=2.0.51,<3",
+        "alembic>=1.19.1,<2"
+      ]
     },
     {
       "id": "sqlalchemy",
@@ -973,7 +1008,10 @@
       "python": ">=3.11,<3.15",
       "workloads": [],
       "roles": [],
-      "packages": []
+      "packages": [
+        "sqlalchemy>=2.0.51,<3",
+        "alembic>=1.19.1,<2"
+      ]
     },
     {
       "id": "api-key",
@@ -993,7 +1031,9 @@
       "python": ">=3.11,<3.15",
       "workloads": [],
       "roles": [],
-      "packages": []
+      "packages": [
+        "authlib>=1.7.2,<2"
+      ]
     },
     {
       "id": "supabase-auth",
@@ -1003,7 +1043,9 @@
       "python": ">=3.11,<3.15",
       "workloads": [],
       "roles": [],
-      "packages": []
+      "packages": [
+        "supabase>=2.31.0,<3"
+      ]
     },
     {
       "id": "bentoml",
diff --git a/copier.yml b/copier.yml
index 9713cb5..115e936 100644
--- a/copier.yml
+++ b/copier.yml
@@ -330,7 +330,7 @@ sql_abstraction:
   choices:
     SQLModel + Alembic: sqlmodel
     SQLAlchemy + Alembic: sqlalchemy
-  when: "{{ sql_store != 'none' }}"
+  when: "{{ sql_store not in ['none', 'supabase'] }}"
 
 document_store:
   type: str
@@ -381,6 +381,12 @@ cache_store:
     Beaver local bundle: beaver
     Redis: redis
 
+data_config:
+  type: bool
+  default: >-
+    {{ sql_store != 'none' or document_store != 'none' or vector_store != 'none' or graph_store != 'none' or cache_store != 'none' }}
+  when: false
+
 auth:
   type: str
   help: Authentication strategy
@@ -392,6 +398,14 @@ auth:
     Supabase Auth: supabase-auth
   when: "{{ workload in ['api', 'web', 'mcp', 'agent', 'rag', 'inference', 'hybrid'] }}"
 
+# Internal derived switch used in template paths. Keeping this expression out
+# of filenames avoids the Windows 260-character checkout limit.
+runtime_config:
+  type: bool
+  default: >-
+    {{ ai_capabilities != 'none' or sql_store != 'none' or document_store != 'none' or vector_store != 'none' or graph_store != 'none' or cache_store != 'none' or auth != 'none' }}
+  when: false
+
 serving:
   type: str
   help: Model serving engine
diff --git a/scripts/compile_catalog.py b/scripts/compile_catalog.py
index 1a4c332..ce9707f 100644
--- a/scripts/compile_catalog.py
+++ b/scripts/compile_catalog.py
@@ -163,7 +163,8 @@ def build_artifacts(
             "  + ([model_provider] if ai_capabilities in ['agents', 'rag', 'inference'] else [])",
             "  + ([embedding_provider] if ai_capabilities == 'rag' else [])",
             "  + [sql_store, document_store, vector_store, graph_store, cache_store]",
-            "  + [sql_abstraction | default('none', true), auth | default('none', true)]",
+            "  + ([sql_abstraction | default('none', true)] if sql_store not in ['none', 'supabase'] else [])",
+            "  + [auth | default('none', true)]",
             "  + [serving | default('none', true)]",
             "  + (training_extensions | default([]))",
             "  + (mlops_tools | default([]))",
@@ -177,7 +178,7 @@ def build_artifacts(
             "{%- endif -%}",
             "{%- endfor -%}",
             "{%- endfor %}",
-            "{%- if ai_capabilities != 'none' or sql_store != 'none' or document_store != 'none' or auth | default('none', true) != 'none' %}",
+            "{%- if ai_capabilities != 'none' or sql_store != 'none' or document_store != 'none' or vector_store != 'none' or graph_store != 'none' or cache_store != 'none' or auth | default('none', true) != 'none' %}",
             '    "pydantic>=2.13.4,<3",',
             '    "pydantic-settings>=2.15.0,<3",',
             "{%- endif %}",
diff --git a/template/_catalog_dependencies.jinja b/template/_catalog_dependencies.jinja
index 06573ce..8ed2dda 100644
--- a/template/_catalog_dependencies.jinja
+++ b/template/_catalog_dependencies.jinja
@@ -1,11 +1,12 @@
 {# Generated by scripts/compile_catalog.py. Do not edit. #}
-{%- set component_packages = {"ag2": ["ag2>=1.0.1,<2"], "agno": ["agno>=2.8.7,<3"], "anthropic": ["anthropic>=0.121.0,<1"], "autogen": ["autogen-agentchat>=0.7.5,<1"], "azure-openai": ["openai>=2.53.0,<3"], "bedrock": ["boto3>=1.43.67,<2"], "chainlit": ["chainlit>=2.11.1,<3"], "cohere": ["cohere>=7.0.8,<8"], "crewai": ["crewai>=1.15.13,<2"], "deepseek": ["openai>=2.53.0,<3"], "dspy": ["dspy>=3.3.0,<4"], "fastapi": ["fastapi[standard]>=0.141.1,<1", "pydantic>=2.13.4,<3", "uvicorn>=0.52.1,<1"], "fasthtml": ["python-fasthtml>=0.14.11,<0.15"], "fastmcp": ["fastmcp>=3.4.6,<4"], "fireworks": ["fireworks-ai>=1.2.6,<2"], "flask": ["flask>=3.1.2,<4"], "gemini": ["google-genai>=2.17.0,<3"], "google-adk": ["google-adk>=2.6.3,<3"], "gradio": ["gradio>=6.22.0,<7"], "groq": ["groq>=1.6.0,<2"], "haystack": ["haystack-ai>=3.0.0,<4"], "huggingface": ["huggingface-hub>=1.27.0,<2"], "jupyterlab": ["jupyterlab>=4.6.2,<5"], "langchain": ["langchain>=1.3.14,<2"], "langgraph": ["langgraph>=1.2.10,<2"], "lingo": ["lingo-ai>=2.1.0,<3"], "llamaindex": ["llama-index>=0.14.23,<0.15"], "mistral": ["mistralai>=2.9.1,<3"], "nicegui": ["nicegui>=3.15.0,<4"], "ollama": ["ollama>=0.6.2,<1"], "openai": ["openai>=2.53.0,<3"], "openai-agents": ["openai-agents>=0.19.4,<1"], "openai-compatible": ["openai>=2.53.0,<3"], "openrouter": ["openrouter>=1.1.37,<2"], "pydantic-ai": ["pydantic-ai>=2.27.0,<3"], "sentence-transformers": ["sentence-transformers>=5.7.0,<6"], "smolagents": ["smolagents>=1.26.0,<2"], "strands-agents": ["strands-agents>=1.51.0,<2"], "streamlit": ["streamlit>=1.61.1,<2"], "textual": ["textual>=8.2.8,<9"], "together": ["together>=2.30.0,<3"], "typer": ["typer>=0.27.1,<1"], "violetear": ["violetear[server]>=1.4.1,<2"], "xai": ["xai-sdk>=1.17.0,<2"]} -%}
+{%- set component_packages = {"ag2": ["ag2>=1.0.1,<2"], "agno": ["agno>=2.8.7,<3"], "anthropic": ["anthropic>=0.121.0,<1"], "autogen": ["autogen-agentchat>=0.7.5,<1"], "azure-openai": ["openai>=2.53.0,<3"], "beaver": ["beaver-db>=2.3.0,<3"], "bedrock": ["boto3>=1.43.67,<2"], "chainlit": ["chainlit>=2.11.1,<3"], "chroma": ["chromadb>=1.5.9,<2"], "cohere": ["cohere>=7.0.8,<8"], "crewai": ["crewai>=1.15.13,<2"], "deepseek": ["openai>=2.53.0,<3"], "dspy": ["dspy>=3.3.0,<4"], "duckdb": ["duckdb>=1.5.5,<2", "duckdb-engine>=0.17.0,<1"], "fastapi": ["fastapi[standard]>=0.141.1,<1", "pydantic>=2.13.4,<3", "uvicorn>=0.52.1,<1"], "fasthtml": ["python-fasthtml>=0.14.11,<0.15"], "fastmcp": ["fastmcp>=3.4.6,<4"], "fireworks": ["fireworks-ai>=1.2.6,<2"], "flask": ["flask>=3.1.2,<4"], "gemini": ["google-genai>=2.17.0,<3"], "google-adk": ["google-adk>=2.6.3,<3"], "gradio": ["gradio>=6.22.0,<7"], "groq": ["groq>=1.6.0,<2"], "haystack": ["haystack-ai>=3.0.0,<4"], "huggingface": ["huggingface-hub>=1.27.0,<2"], "jupyterlab": ["jupyterlab>=4.6.2,<5"], "lancedb": ["lancedb>=0.36.0,<1"], "langchain": ["langchain>=1.3.14,<2"], "langgraph": ["langgraph>=1.2.10,<2"], "lingo": ["lingo-ai>=2.1.0,<3"], "llamaindex": ["llama-index>=0.14.23,<0.15"], "milvus": ["pymilvus>=3.0.1,<4"], "mistral": ["mistralai>=2.9.1,<3"], "mongodb": ["pymongo>=4.17.0,<5"], "mysql": ["pymysql>=1.2.0,<2"], "neo4j": ["neo4j>=6.2.0,<7"], "nicegui": ["nicegui>=3.15.0,<4"], "oidc": ["authlib>=1.7.2,<2"], "ollama": ["ollama>=0.6.2,<1"], "openai": ["openai>=2.53.0,<3"], "openai-agents": ["openai-agents>=0.19.4,<1"], "openai-compatible": ["openai>=2.53.0,<3"], "openrouter": ["openrouter>=1.1.37,<2"], "pgvector": ["pgvector>=0.5.0,<1"], "pinecone": ["pinecone>=9.1.0,<10"], "postgresql": ["psycopg[binary]>=3.3.4,<4"], "pydantic-ai": ["pydantic-ai>=2.27.0,<3"], "qdrant": ["qdrant-client>=1.19.0,<2"], "redis": ["redis>=8.1.0,<9"], "sentence-transformers": ["sentence-transformers>=5.7.0,<6"], "smolagents": ["smolagents>=1.26.0,<2"], "sqlalchemy": ["sqlalchemy>=2.0.51,<3", "alembic>=1.19.1,<2"], "sqlmodel": ["sqlmodel>=0.0.39,<0.1", "sqlalchemy>=2.0.51,<3", "alembic>=1.19.1,<2"], "strands-agents": ["strands-agents>=1.51.0,<2"], "streamlit": ["streamlit>=1.61.1,<2"], "supabase": ["supabase>=2.31.0,<3"], "supabase-auth": ["supabase>=2.31.0,<3"], "textual": ["textual>=8.2.8,<9"], "together": ["together>=2.30.0,<3"], "typer": ["typer>=0.27.1,<1"], "violetear": ["violetear[server]>=1.4.1,<2"], "weaviate": ["weaviate-client>=4.22.0,<5"], "xai": ["xai-sdk>=1.17.0,<2"]} -%}
 {%- set selected_components = [framework]
   + (interfaces | default([]))
   + ([model_provider] if ai_capabilities in ['agents', 'rag', 'inference'] else [])
   + ([embedding_provider] if ai_capabilities == 'rag' else [])
   + [sql_store, document_store, vector_store, graph_store, cache_store]
-  + [sql_abstraction | default('none', true), auth | default('none', true)]
+  + ([sql_abstraction | default('none', true)] if sql_store not in ['none', 'supabase'] else [])
+  + [auth | default('none', true)]
   + [serving | default('none', true)]
   + (training_extensions | default([]))
   + (mlops_tools | default([]))
@@ -19,7 +20,7 @@
 {%- endif -%}
 {%- endfor -%}
 {%- endfor %}
-{%- if ai_capabilities != 'none' or sql_store != 'none' or document_store != 'none' or auth | default('none', true) != 'none' %}
+{%- if ai_capabilities != 'none' or sql_store != 'none' or document_store != 'none' or vector_store != 'none' or graph_store != 'none' or cache_store != 'none' or auth | default('none', true) != 'none' %}
     "pydantic>=2.13.4,<3",
     "pydantic-settings>=2.15.0,<3",
 {%- endif %}
diff --git a/template/src/{{ module_name }}/{% if ai_capabilities in ['agents', 'rag', 'inference'] %}providers.py{% endif %}.jinja b/template/src/{{ module_name }}/{% if ai_capabilities in ['agents', 'rag', 'inference'] %}providers.py{% endif %}.jinja
new file mode 100644
index 0000000..c662a5f
--- /dev/null
+++ b/template/src/{{ module_name }}/{% if ai_capabilities in ['agents', 'rag', 'inference'] %}providers.py{% endif %}.jinja	
@@ -0,0 +1,65 @@
+"""SDK modules for the selected model and embedding providers."""
+
+from typing import Any
+
+{% if model_provider in ['openai', 'azure-openai', 'openai-compatible', 'deepseek'] -%}
+import openai as model_sdk_module
+{%- elif model_provider == 'anthropic' -%}
+import anthropic as model_sdk_module
+{%- elif model_provider == 'gemini' -%}
+from google import genai as model_sdk_module
+{%- elif model_provider == 'bedrock' -%}
+import boto3 as model_sdk_module
+{%- elif model_provider == 'openrouter' -%}
+import openrouter as model_sdk_module
+{%- elif model_provider == 'groq' -%}
+import groq as model_sdk_module
+{%- elif model_provider == 'mistral' -%}
+import mistralai as model_sdk_module
+{%- elif model_provider == 'cohere' -%}
+import cohere as model_sdk_module
+{%- elif model_provider == 'huggingface' -%}
+import huggingface_hub as model_sdk_module
+{%- elif model_provider == 'ollama' -%}
+import ollama as model_sdk_module
+{%- elif model_provider == 'xai' -%}
+import xai_sdk as model_sdk_module
+{%- elif model_provider == 'together' -%}
+import together as model_sdk_module
+{%- elif model_provider == 'fireworks' -%}
+import fireworks as model_sdk_module
+{%- endif %}
+{%- if ai_capabilities == 'rag' and embedding_provider != model_provider -%}
+{%- if embedding_provider == 'sentence-transformers' -%}
+import sentence_transformers as embedding_sdk_module
+{%- elif embedding_provider == 'openai' -%}
+import openai as embedding_sdk_module
+{%- elif embedding_provider == 'gemini' -%}
+from google import genai as embedding_sdk_module
+{%- elif embedding_provider == 'cohere' -%}
+import cohere as embedding_sdk_module
+{%- elif embedding_provider == 'mistral' -%}
+import mistralai as embedding_sdk_module
+{%- elif embedding_provider == 'huggingface' -%}
+import huggingface_hub as embedding_sdk_module
+{%- elif embedding_provider == 'ollama' -%}
+import ollama as embedding_sdk_module
+{%- endif %}
+{%- endif %}
+
+
+def model_sdk() -> Any:
+    """Return the configured model provider SDK module."""
+    return model_sdk_module
+
+{%- if ai_capabilities == 'rag' %}
+
+
+def embedding_sdk() -> Any:
+    """Return the configured embedding provider SDK module."""
+{%- if embedding_provider == model_provider %}
+    return model_sdk_module
+{%- else %}
+    return embedding_sdk_module
+{%- endif %}
+{%- endif %}
diff --git a/template/src/{{ module_name }}/{% if auth != 'none' %}auth.py{% endif %}.jinja b/template/src/{{ module_name }}/{% if auth != 'none' %}auth.py{% endif %}.jinja
new file mode 100644
index 0000000..873e349
--- /dev/null
+++ b/template/src/{{ module_name }}/{% if auth != 'none' %}auth.py{% endif %}.jinja	
@@ -0,0 +1,38 @@
+"""Authentication helpers for the selected strategy."""
+
+{% if auth == 'api-key' -%}
+import secrets
+{%- elif auth == 'oidc' -%}
+from authlib.jose import JsonWebToken
+{%- elif auth == 'supabase-auth' -%}
+from supabase import Client as SupabaseClient
+{%- endif %}
+
+from {{ module_name }}.settings import settings
+
+AUTH_STRATEGY = "{{ auth }}"
+
+{%- if auth == 'api-key' %}
+
+
+def authenticate_api_key(candidate: str) -> bool:
+    """Compare an API key without leaking timing information."""
+    expected = settings.api_key
+    return expected is not None and secrets.compare_digest(
+        candidate, expected.get_secret_value()
+    )
+{%- elif auth == 'oidc' %}
+
+
+def oidc_decoder() -> JsonWebToken:
+    """Build the JWT decoder; fetch and pass the issuer JWKS at the boundary."""
+    assert settings.oidc_issuer and settings.oidc_audience
+    return JsonWebToken(["RS256", "ES256"])
+{%- elif auth == 'supabase-auth' %}
+
+
+def auth_client_type() -> type[SupabaseClient]:
+    """Return the configured Supabase client type without opening a connection."""
+    assert settings.supabase_url
+    return SupabaseClient
+{%- endif %}
diff --git a/template/src/{{ module_name }}/{% if data_config %}data.py{% endif %}.jinja b/template/src/{{ module_name }}/{% if data_config %}data.py{% endif %}.jinja
new file mode 100644
index 0000000..87b211c
--- /dev/null
+++ b/template/src/{{ module_name }}/{% if data_config %}data.py{% endif %}.jinja	
@@ -0,0 +1,129 @@
+"""Configured data engines without eager network connections."""
+
+from __future__ import annotations
+
+from typing import Any
+
+{% if sql_store not in ['none', 'supabase'] -%}
+import alembic
+from sqlalchemy import Engine, create_engine
+{% if sql_abstraction == 'sqlmodel' -%}
+from sqlmodel import SQLModel
+{% else -%}
+from sqlalchemy.orm import DeclarativeBase
+{% endif -%}
+{% endif -%}
+{%- if sql_store == 'postgresql' -%}
+import psycopg
+{%- elif sql_store == 'mysql' -%}
+import pymysql
+{%- elif sql_store == 'duckdb' -%}
+import duckdb
+import duckdb_engine
+{%- endif %}
+{%- if 'supabase' in [sql_store, document_store] -%}
+from supabase import Client as SupabaseClient
+{%- endif %}
+{%- if document_store == 'mongodb' -%}
+from pymongo import MongoClient
+{%- endif %}
+{%- if 'beaver' in [document_store, vector_store, graph_store, cache_store] -%}
+from beaver import BeaverDB
+{%- endif %}
+{%- if vector_store == 'pgvector' -%}
+from pgvector.sqlalchemy import Vector
+{%- elif vector_store == 'qdrant' -%}
+from qdrant_client import QdrantClient
+{%- elif vector_store == 'chroma' -%}
+import chromadb
+{%- elif vector_store == 'lancedb' -%}
+import lancedb
+{%- elif vector_store == 'weaviate' -%}
+import weaviate
+{%- elif vector_store == 'pinecone' -%}
+from pinecone import Pinecone
+{%- elif vector_store == 'milvus' -%}
+from pymilvus import MilvusClient
+{%- endif %}
+{%- if graph_store == 'neo4j' -%}
+from neo4j import GraphDatabase
+{%- endif %}
+{%- if cache_store == 'redis' -%}
+from redis import Redis
+{%- endif %}
+{{ "\n" if sql_store in ['none', 'supabase'] else "" -}}
+STORES = {
+    "sql": "{{ sql_store }}",
+    "document": "{{ document_store }}",
+    "vector": "{{ vector_store }}",
+    "graph": "{{ graph_store }}",
+    "cache": "{{ cache_store }}",
+}
+
+
+def installed_clients() -> tuple[Any, ...]:
+    """Return imported client types/modules for the selected engines."""
+    clients: list[Any] = []
+{%- if sql_store == 'postgresql' %}
+    clients.extend((alembic, psycopg))
+{%- elif sql_store == 'mysql' %}
+    clients.extend((alembic, pymysql))
+{%- elif sql_store == 'duckdb' %}
+    clients.extend((alembic, duckdb, duckdb_engine))
+{%- elif sql_store == 'sqlite' %}
+    clients.append(alembic)
+{%- endif %}
+{%- if 'supabase' in [sql_store, document_store] %}
+    clients.append(SupabaseClient)
+{%- endif %}
+{%- if document_store == 'mongodb' %}
+    clients.append(MongoClient)
+{%- endif %}
+{%- if 'beaver' in [document_store, vector_store, graph_store, cache_store] %}
+    clients.append(BeaverDB)
+{%- endif %}
+{%- if vector_store == 'pgvector' %}
+    clients.append(Vector)
+{%- elif vector_store == 'qdrant' %}
+    clients.append(QdrantClient)
+{%- elif vector_store == 'chroma' %}
+    clients.append(chromadb)
+{%- elif vector_store == 'lancedb' %}
+    clients.append(lancedb)
+{%- elif vector_store == 'weaviate' %}
+    clients.append(weaviate)
+{%- elif vector_store == 'pinecone' %}
+    clients.append(Pinecone)
+{%- elif vector_store == 'milvus' %}
+    clients.append(MilvusClient)
+{%- endif %}
+{%- if graph_store == 'neo4j' %}
+    clients.append(GraphDatabase)
+{%- endif %}
+{%- if cache_store == 'redis' %}
+    clients.append(Redis)
+{%- endif %}
+    return tuple(clients)
+
+{%- if sql_store not in ['none', 'supabase'] %}
+
+
+def create_sql_engine(url: str | None = None) -> Engine:
+    """Create the selected SQLAlchemy-compatible engine."""
+    from {{ module_name }}.settings import settings
+
+    return create_engine(url or settings.database_url)
+
+
+def create_schema(engine: Engine) -> None:
+    """Create tables registered in the selected abstraction metadata."""
+{%- if sql_abstraction == 'sqlmodel' %}
+    SQLModel.metadata.create_all(engine)
+{%- else %}
+    Base.metadata.create_all(engine)
+
+
+class Base(DeclarativeBase):
+    """Base class for generated SQLAlchemy models."""
+{%- endif %}
+{%- endif %}
diff --git a/template/src/{{ module_name }}/{% if ai_capabilities != 'none' %}settings.py{% endif %}.jinja b/template/src/{{ module_name }}/{% if runtime_config %}settings.py{% endif %}.jinja
similarity index 61%
rename from template/src/{{ module_name }}/{% if ai_capabilities != 'none' %}settings.py{% endif %}.jinja
rename to template/src/{{ module_name }}/{% if runtime_config %}settings.py{% endif %}.jinja
index d38d8d8..59900f8 100644
--- a/template/src/{{ module_name }}/{% if ai_capabilities != 'none' %}settings.py{% endif %}.jinja	
+++ b/template/src/{{ module_name }}/{% if runtime_config %}settings.py{% endif %}.jinja	
@@ -8,6 +8,7 @@ class Settings(BaseSettings):
     """Configuration loaded from environment variables or a local .env file."""
 
     model_config = SettingsConfigDict(env_file=".env", extra="ignore")
+{%- if ai_capabilities != 'none' %}
 
     model_provider: str = "{{ model_provider | default('none', true) }}"
     model_name: str = "{% if model_provider | default('none', true) == 'openai' %}gpt-5-mini{% elif model_provider | default('none', true) == 'anthropic' %}claude-sonnet-4-5{% elif model_provider | default('none', true) == 'gemini' %}gemini-2.5-flash{% elif model_provider | default('none', true) == 'bedrock' %}amazon.nova-lite-v1:0{% elif model_provider | default('none', true) == 'ollama' %}qwen3:4b{% else %}configure-me{% endif %}"
@@ -17,6 +18,21 @@ class Settings(BaseSettings):
     embedding_provider: str = "{{ embedding_provider }}"
     embedding_model: str = "{% if embedding_provider == 'sentence-transformers' %}sentence-transformers/all-MiniLM-L6-v2{% else %}configure-me{% endif %}"
 {%- endif %}
+{%- endif %}
+{%- if sql_store != 'none' %}
+
+    database_url: str = "{% if sql_store == 'sqlite' %}sqlite:///app.db{% elif sql_store == 'postgresql' %}postgresql+psycopg://postgres:postgres@localhost:5432/app{% elif sql_store == 'mysql' %}mysql+pymysql://root:password@localhost:3306/app{% elif sql_store == 'duckdb' %}duckdb:///app.duckdb{% else %}configure-me{% endif %}"
+{%- endif %}
+{%- if 'supabase' in [sql_store, document_store] or auth == 'supabase-auth' %}
+    supabase_url: str = "http://127.0.0.1:54321"
+    supabase_key: SecretStr | None = None
+{%- endif %}
+{%- if auth == 'api-key' %}
+    api_key: SecretStr | None = None
+{%- elif auth == 'oidc' %}
+    oidc_issuer: str = "https://issuer.example.com"
+    oidc_audience: str = "{{ project_slug }}"
+{%- endif %}
 
 
 settings = Settings()
diff --git a/template/src/{{ module_name }}/{% if workload == 'agent' %}agent.py{% endif %}.jinja b/template/src/{{ module_name }}/{% if workload == 'agent' %}agent.py{% endif %}.jinja
index 6cd89ed..bec7305 100644
--- a/template/src/{{ module_name }}/{% if workload == 'agent' %}agent.py{% endif %}.jinja	
+++ b/template/src/{{ module_name }}/{% if workload == 'agent' %}agent.py{% endif %}.jinja	
@@ -2,28 +2,44 @@
 
 from __future__ import annotations
 
-import importlib
 from dataclasses import dataclass
 from typing import Any
 
+{% if framework == 'pydantic-ai' and pydantic_ai_harness | default([]) -%}
+import pydantic_ai as framework_module
+import pydantic_ai_harness
+{%- elif framework == 'pydantic-ai' -%}
+import pydantic_ai as framework_module
+{%- elif framework == 'langgraph' -%}
+import langgraph as framework_module
+{%- elif framework == 'langchain' -%}
+import langchain as framework_module
+{%- elif framework == 'llamaindex' -%}
+import llama_index as framework_module
+{%- elif framework == 'crewai' -%}
+import crewai as framework_module
+{%- elif framework == 'smolagents' -%}
+import smolagents as framework_module
+{%- elif framework == 'dspy' -%}
+import dspy as framework_module
+{%- elif framework == 'openai-agents' -%}
+import agents as framework_module
+{%- elif framework == 'google-adk' -%}
+import google.adk as framework_module
+{%- elif framework == 'strands-agents' -%}
+import strands as framework_module
+{%- elif framework == 'autogen' -%}
+import autogen_agentchat as framework_module
+{%- elif framework == 'ag2' -%}
+import autogen as framework_module
+{%- elif framework == 'agno' -%}
+import agno as framework_module
+{%- elif framework == 'lingo' -%}
+import lingo as framework_module
+{%- endif %}
+
 FRAMEWORK = "{{ framework }}"
 PROVIDER = "{{ model_provider }}"
-FRAMEWORK_MODULES = {
-    "pydantic-ai": "pydantic_ai",
-    "langgraph": "langgraph",
-    "langchain": "langchain",
-    "llamaindex": "llama_index",
-    "crewai": "crewai",
-    "smolagents": "smolagents",
-    "dspy": "dspy",
-    "openai-agents": "agents",
-    "google-adk": "google.adk",
-    "strands-agents": "strands",
-    "autogen": "autogen_agentchat",
-    "ag2": "autogen",
-    "agno": "agno",
-    "lingo": "lingo",
-}
 
 
 @dataclass(frozen=True)
@@ -40,7 +56,7 @@ class LocalAgent:
 
 def configured_framework() -> Any:
     """Import and return the configured framework's public module."""
-    return importlib.import_module(FRAMEWORK_MODULES[FRAMEWORK])
+    return framework_module
 
 
 def build_agent() -> LocalAgent:
@@ -51,6 +67,9 @@ def build_agent() -> LocalAgent:
 
 def harness_capabilities() -> tuple[str, ...]:
     """Return the selected optional PydanticAI Harness integrations."""
+{%- if framework == 'pydantic-ai' and pydantic_ai_harness | default([]) %}
+    assert pydantic_ai_harness is not None
+{%- endif %}
     return ({% for capability in pydantic_ai_harness | default([]) %}"{{ capability }}"{% if not loop.last %}, {% endif %}{% endfor %}{% if pydantic_ai_harness | default([]) | length == 1 %},{% endif %})
 
 
diff --git a/template/src/{{ module_name }}/{% if workload == 'rag' %}rag.py{% endif %}.jinja b/template/src/{{ module_name }}/{% if workload == 'rag' %}rag.py{% endif %}.jinja
index a40cc34..d88edc1 100644
--- a/template/src/{{ module_name }}/{% if workload == 'rag' %}rag.py{% endif %}.jinja	
+++ b/template/src/{{ module_name }}/{% if workload == 'rag' %}rag.py{% endif %}.jinja	
@@ -2,15 +2,15 @@
 
 from __future__ import annotations
 
-import importlib
 from dataclasses import dataclass, field
 
-FRAMEWORK = "{{ framework }}"
-FRAMEWORK_MODULES = {
-    "langchain": "langchain",
-    "llamaindex": "llama_index",
-    "haystack": "haystack",
-}
+{% if framework == 'langchain' -%}
+import langchain as framework_module
+{%- elif framework == 'llamaindex' -%}
+import llama_index as framework_module
+{%- elif framework == 'haystack' -%}
+import haystack as framework_module
+{%- endif %}
 
 
 @dataclass
@@ -36,7 +36,7 @@ class InMemoryRAG:
 
 def build_rag() -> InMemoryRAG:
     """Validate the selected framework and create the offline retriever."""
-    importlib.import_module(FRAMEWORK_MODULES[FRAMEWORK])
+    assert framework_module is not None
     return InMemoryRAG()
 
 
diff --git a/template/tests/{% if auth != 'none' %}test_auth.py{% endif %}.jinja b/template/tests/{% if auth != 'none' %}test_auth.py{% endif %}.jinja
new file mode 100644
index 0000000..18e03b4
--- /dev/null
+++ b/template/tests/{% if auth != 'none' %}test_auth.py{% endif %}.jinja	
@@ -0,0 +1,7 @@
+"""Tests for the selected authentication strategy."""
+
+from {{ module_name }}.auth import AUTH_STRATEGY
+
+
+def test_auth_strategy_is_recorded() -> None:
+    assert AUTH_STRATEGY == "{{ auth }}"
diff --git a/template/tests/{% if data_config %}test_data.py{% endif %}.jinja b/template/tests/{% if data_config %}test_data.py{% endif %}.jinja
new file mode 100644
index 0000000..e7bace1
--- /dev/null
+++ b/template/tests/{% if data_config %}test_data.py{% endif %}.jinja	
@@ -0,0 +1,14 @@
+"""Tests for the selected data engines."""
+
+from {{ module_name }}.data import STORES, installed_clients
+
+
+def test_selected_data_engines_are_recorded() -> None:
+    assert STORES == {
+        "sql": "{{ sql_store }}",
+        "document": "{{ document_store }}",
+        "vector": "{{ vector_store }}",
+        "graph": "{{ graph_store }}",
+        "cache": "{{ cache_store }}",
+    }
+    assert isinstance(installed_clients(), tuple)
diff --git a/template/{% if ai_capabilities != 'none' %}.env.example{% endif %}.jinja b/template/{% if runtime_config %}.env.example{% endif %}.jinja
similarity index 57%
rename from template/{% if ai_capabilities != 'none' %}.env.example{% endif %}.jinja
rename to template/{% if runtime_config %}.env.example{% endif %}.jinja
index 3578891..abae979 100644
--- a/template/{% if ai_capabilities != 'none' %}.env.example{% endif %}.jinja	
+++ b/template/{% if runtime_config %}.env.example{% endif %}.jinja	
@@ -1,4 +1,5 @@
 # Copy this file to .env. Never commit real credentials.
+{%- if ai_capabilities != 'none' %}
 MODEL_PROVIDER={{ model_provider | default('none', true) }}
 MODEL_NAME={% if model_provider | default('none', true) == 'openai' %}gpt-5-mini{% elif model_provider | default('none', true) == 'anthropic' %}claude-sonnet-4-5{% elif model_provider | default('none', true) == 'gemini' %}gemini-2.5-flash{% elif model_provider | default('none', true) == 'bedrock' %}amazon.nova-lite-v1:0{% elif model_provider | default('none', true) == 'ollama' %}qwen3:4b{% else %}configure-me{% endif %}
 MODEL_API_KEY=
@@ -7,3 +8,17 @@ MODEL_BASE_URL={% if model_provider | default('none', true) == 'ollama' %}http:/
 EMBEDDING_PROVIDER={{ embedding_provider }}
 EMBEDDING_MODEL={% if embedding_provider == 'sentence-transformers' %}sentence-transformers/all-MiniLM-L6-v2{% else %}configure-me{% endif %}
 {%- endif %}
+{%- endif %}
+{%- if sql_store != 'none' %}
+DATABASE_URL={% if sql_store == 'sqlite' %}sqlite:///app.db{% elif sql_store == 'postgresql' %}postgresql+psycopg://postgres:postgres@localhost:5432/app{% elif sql_store == 'mysql' %}mysql+pymysql://root:password@localhost:3306/app{% elif sql_store == 'duckdb' %}duckdb:///app.duckdb{% endif %}
+{%- endif %}
+{%- if 'supabase' in [sql_store, document_store] or auth == 'supabase-auth' %}
+SUPABASE_URL=http://127.0.0.1:54321
+SUPABASE_KEY=
+{%- endif %}
+{%- if auth == 'api-key' %}
+API_KEY=
+{%- elif auth == 'oidc' %}
+OIDC_ISSUER=https://issuer.example.com
+OIDC_AUDIENCE={{ project_slug }}
+{%- endif %}
diff --git a/template/{% if sql_store not in ['none', 'supabase'] %}alembic.ini{% endif %}.jinja b/template/{% if sql_store not in ['none', 'supabase'] %}alembic.ini{% endif %}.jinja
new file mode 100644
index 0000000..8b35aea
--- /dev/null
+++ b/template/{% if sql_store not in ['none', 'supabase'] %}alembic.ini{% endif %}.jinja	
@@ -0,0 +1,37 @@
+[alembic]
+script_location = migrations
+prepend_sys_path = .
+sqlalchemy.url = {% if sql_store == 'sqlite' %}sqlite:///app.db{% elif sql_store == 'postgresql' %}postgresql+psycopg://postgres:postgres@localhost:5432/app{% elif sql_store == 'mysql' %}mysql+pymysql://root:password@localhost:3306/app{% elif sql_store == 'duckdb' %}duckdb:///app.duckdb{% endif %}
+
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
diff --git a/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/env.py.jinja b/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/env.py.jinja
new file mode 100644
index 0000000..b3c1dea
--- /dev/null
+++ b/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/env.py.jinja	
@@ -0,0 +1,40 @@
+"""Alembic environment for the generated SQL layer."""
+
+from logging.config import fileConfig
+
+from alembic import context
+
+from {{ module_name }}.data import {% if sql_abstraction == 'sqlmodel' %}SQLModel{% else %}Base{% endif %}
+from {{ module_name }}.settings import settings
+
+config = context.config
+config.set_main_option("sqlalchemy.url", settings.database_url)
+if config.config_file_name:
+    fileConfig(config.config_file_name)
+
+target_metadata = {% if sql_abstraction == 'sqlmodel' %}SQLModel.metadata{% else %}Base.metadata{% endif %}
+
+
+def run_migrations_offline() -> None:
+    context.configure(
+        url=settings.database_url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    from {{ module_name }}.data import create_sql_engine
+
+    with create_sql_engine().connect() as connection:
+        context.configure(connection=connection, target_metadata=target_metadata)
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
diff --git a/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/script.py.mako.jinja b/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/script.py.mako.jinja
new file mode 100644
index 0000000..5d6b69d
--- /dev/null
+++ b/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/script.py.mako.jinja	
@@ -0,0 +1,25 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+"""
+
+from collections.abc import Sequence
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+revision: str = ${repr(up_revision)}
+down_revision: str | Sequence[str] | None = ${repr(down_revision)}
+branch_labels: str | Sequence[str] | None = ${repr(branch_labels)}
+depends_on: str | Sequence[str] | None = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}
diff --git a/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/versions/.gitkeep.jinja b/template/{% if sql_store not in ['none', 'supabase'] %}migrations{% endif %}/versions/.gitkeep.jinja
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_ai_presets.py b/tests/test_ai_presets.py
index c199839..beb71ba 100644
--- a/tests/test_ai_presets.py
+++ b/tests/test_ai_presets.py
@@ -16,10 +16,12 @@
     ],
     "llamaindex-rag": [
         "src/demo_project/rag.py",
+        "src/demo_project/data.py",
         "src/demo_project/interfaces/gradio_app.py",
     ],
     "local-lingo-app": [
         "src/demo_project/agent.py",
+        "src/demo_project/data.py",
         "src/demo_project/interfaces/violetear_app.py",
     ],
 }
@@ -50,4 +52,33 @@ def test_ai_preset_vertical_slice(
         run([uv, "run", "ruff", "format", "--check", "."], project),
         "ruff format",
     )
+    assert_ok(run([uv, "run", "deptry", "src"], project), "deptry")
+    assert_ok(run([uv, "run", "pytest", "-q"], project), "pytest")
+
+
+@pytest.mark.preset
+def test_data_and_auth_vertical_slice(copie, uv: str) -> None:
+    """The SQLModel, Alembic and API-key layers pass the generated gate."""
+    result = copie.copy(
+        extra_answers=answers(
+            preset="custom",
+            workload="api",
+            framework="fastapi",
+            sql_store="sqlite",
+            sql_abstraction="sqlmodel",
+            auth="api-key",
+            use_docs=False,
+            use_codeql=False,
+            use_docker=False,
+        )
+    )
+    assert result.exception is None, result.exception
+    project = result.project_dir
+
+    assert_ok(run([uv, "run", "ruff", "check", "."], project), "ruff check")
+    assert_ok(
+        run([uv, "run", "ruff", "format", "--check", "."], project),
+        "ruff format",
+    )
+    assert_ok(run([uv, "run", "deptry", "src"], project), "deptry")
     assert_ok(run([uv, "run", "pytest", "-q"], project), "pytest")
diff --git a/tests/test_catalog.py b/tests/test_catalog.py
index a180356..dbdf896 100644
--- a/tests/test_catalog.py
+++ b/tests/test_catalog.py
@@ -55,3 +55,12 @@ def test_compiled_dependency_template_contains_every_catalog_package() -> None:
     for component in source["components"]:
         for package in component.get("packages", []):
             assert package in compiled, (component["id"], package)
+
+
+def test_template_paths_fit_windows_checkout_limits() -> None:
+    longest = max(
+        (path.relative_to(REPO).as_posix() for path in (REPO / "template").rglob("*")),
+        key=len,
+    )
+    # Hosted Actions adds roughly 40 characters before the repository path.
+    assert len(longest) < 200, longest
diff --git a/tests/test_generation.py b/tests/test_generation.py
index becbe3b..c815e0c 100644
--- a/tests/test_generation.py
+++ b/tests/test_generation.py
@@ -108,6 +108,29 @@ def test_flask_is_available_for_a_simple_api(copie) -> None:
     assert "app.test_client()" in tests
 
 
+def test_sql_and_auth_layers_generate_together(copie) -> None:
+    project = copie.copy(
+        extra_answers=answers(
+            preset="custom",
+            workload="api",
+            framework="fastapi",
+            sql_store="sqlite",
+            sql_abstraction="sqlmodel",
+            auth="api-key",
+        )
+    ).project_dir
+
+    package = project / "src" / "demo_project"
+    pyproject = (project / "pyproject.toml").read_text()
+    assert (package / "data.py").is_file()
+    assert (package / "auth.py").is_file()
+    assert (package / "settings.py").is_file()
+    assert (project / "alembic.ini").is_file()
+    assert (project / "migrations" / "env.py").is_file()
+    assert '"sqlmodel>=0.0.39,<0.1"' in pyproject
+    assert '"alembic>=1.19.1,<2"' in pyproject
+
+
 def test_optional_features_are_omitted(copie) -> None:
     """Turning features off removes their files entirely."""
     result = copie.copy(