Layout NG: Folder structure and naming things

The new structure revolves around "Topics", "Use Cases", and "Ingest".
Existing pages are relocated appropriately, specifically category-like
pages that provide guidance into relevant subsections.

- The "Application Domains" label is discouraged, let's just use "Topic"
  instead: s/domain/topic/

- Refactor category sections from `integrate/{etl,cdc,telemetry}` to
  `ingest`

- Refactor category sections and pages from
  `integrate/{bi,framework,lineage,testing,timeseries,visualize}` to
  `topic`

- Dissolve `reference-architectures` folder, refactor contents to
  `use/industrial`

Author: amotl

docs/integrate/ide.md renamed to docs/connect/ide.md

@@ -1,13 +1,14 @@
 (ide)=
-
+(connect-ide)=
 # Database IDEs
 
 Mostly through its PostgreSQL interface, CrateDB supports working with popular
 database IDE (Integrated Development Environment) applications.
 
-```{toctree}
-:maxdepth: 2
+## DataGrip
+
+- {ref}`datagrip`
+
+## DBeaver
 
-datagrip/index
-dbeaver/index
-```
+- {ref}`dbeaver`

docs/connect/index.md

@@ -101,8 +101,9 @@ Connection examples.
 :hidden:
 
 configure
-Drivers <drivers>
 CLI programs <cli>
+ide
+Drivers <drivers>
 DataFrame libraries <df/index>
 ORM libraries <orm>
 ```

docs/index.md

@@ -301,21 +301,20 @@ use-cases.
 ::::
 
 
+
 ```{toctree}
 :hidden:
 
 install/index
 connect/index
 getting-started
-Ingestion <ingest/index>
 feature/index
+Ingestion <ingest/index>
+topic/index
+use/index
+integrate/index
 admin/index
 performance/index
-
-domain/index
-integrate/index
-migrate/index
-reference-architectures/index
 ```
 
 

docs/integrate/cdc/index.md renamed to docs/ingest/cdc/index.md

@@ -56,11 +56,7 @@ Kinesis Stream, and consume that from an adapter to a consolidation database.
 
 ## Debezium
 
-:::{toctree}
-:maxdepth: 1
-
-../debezium/index
-:::
+- {ref}`debezium`
 
 (cdc-dynamodb)=
 ## DynamoDB
@@ -100,5 +96,4 @@ lives.
 - {ref}`streamsets`
 
 
-
 [StreamSets Data Collector]: https://www.softwareag.com/en_corporate/platform/integration-apis/data-collector-engine.html

docs/integrate/etl/azure-functions.rst renamed to docs/ingest/etl/azure-functions.rst

@@ -1,7 +1,7 @@
 (etl)=
 (io)=
 (import-export)=
-# Load and Export
+# Load and Export (ETL)
 
 :::{include} /_include/links.md
 :::
@@ -19,27 +19,15 @@ Please also have a look at support for [](#cdc) solutions.
 
 ## Apache Airflow / Astronomer
 
-:::{toctree}
-:maxdepth: 1
-
-../apache-airflow/index
-:::
+- {ref}`apache-airflow`
 
 ## Apache Flink
 
-:::{toctree}
-:maxdepth: 1
-
-../apache-flink/index
-:::
+- {ref}`apache-flink`
 
 ## Apache Hop
 
-:::{toctree}
-:maxdepth: 1
-
-../apache-hop/index
-:::
+- {ref}`apache-hop`
 
 ## Apache Iceberg / RisingWave
 :::{div}
@@ -54,19 +42,11 @@ iceberg-risingwave
 
 ## Apache Kafka
 
-:::{toctree}
-:maxdepth: 1
-
-../apache-kafka/index
-:::
+- {ref}`apache-kafka`
 
 ## Apache NiFi
 
-:::{toctree}
-:maxdepth: 1
-
-../apache-nifi/index
-:::
+- {ref}`apache-nifi`
 
 ## AWS DMS
 
@@ -116,12 +96,7 @@ azure-functions
 
 ## dbt
 
-:::{toctree}
-:maxdepth: 1
-
-../dbt/index
-:::
-
+- {ref}`dbt`
 
 ## DynamoDB
 :::{div}
@@ -132,38 +107,19 @@ azure-functions
 
 ## Estuary
 
-:::{toctree}
-:maxdepth: 1
-
-../estuary/index
-:::
-
+- {ref}`estuary`
 
 ## InfluxDB
 
 - {ref}`integrate-influxdb`
 
-```{toctree}
-:hidden:
-
-../influxdb/index
-```
-
 ## Kestra
 
-:::{toctree}
-:maxdepth: 1
-
-../kestra/index
-:::
+- {ref}`kestra`
 
 ## Meltano
 
-:::{toctree}
-:maxdepth: 1
-
-../meltano/index
-:::
+- {ref}`meltano`
 
 ## MongoDB
 :::{div}
@@ -190,27 +146,15 @@ mysql
 
 ## Node-RED
 
-:::{toctree}
-:maxdepth: 1
-
-../node-red/index
-:::
+- {ref}`node-red`
 
 ## RisingWave
 
-:::{toctree}
-:maxdepth: 1
-
-../risingwave/index
-:::
+- {ref}`risingwave`
 
 ## SQL Server Integration Services
 
-:::{toctree}
-:maxdepth: 1
-
-../sql-server/index
-:::
+- {ref}`sql-server`
 
 ## StreamSets