Yes it can be tested locally. no publish no dispatcher required

Add a listener to the dropdown which updates the rootPath property let this listner call some servlet which updates the cq:tags property of jcr:content node. you can use CQ http call in classic ui and a simple ajax call for touch ui listener.

I just installed SP1. Its working fine. I don't see issues with S&PJust try update this dependency<dependency> <groupId>com.adobe.cq.commerce</groupId> <artifactId>cq-commerce-core</artifactId> <version>5.14.102</version> <scope>provided</scope> </dependency>

<configuration>   <properties>   <acHandling>Overwrite</acHandling>   </properties></configuration>

have you updated uber jar dependency in pom.xml ?<!-- https://mvnrepository.com/artifact/com.adobe.aem/uber-jar --><dependency>    <groupId>com.adobe.aem</groupId>    <artifactId>uber-jar</artifactId>    <version>6.2.0</version>    <scope>provided</scope></dependency>also update replication dependen...

Also refer to https://forums.adobe.com/thread/2326844you may also try overlaying /libs/cq/tagging/widgets/source/widgets/TagInputField.js

You will have to write a custom timepicker for that. There is no out of the box timepicker available in touch ui

When we create our custom project using maven archetype, we see ui.content folder in that. So for rep:policy also make a package and extract it and copy the files/folder under jcr_root(extracted package) to ui.content/src/main/content/jcr_root/contentmake sure you overwrite or merge ACL in pom.

Yes its possible.make a package of the /home/users/systemdownload the packagecreate a structure in your project /home/src/main/contentand add the extracted folders under contentadd pom.xml in parallel to src folder and run mvn clean install

Do you just need timefield and not the complete datetime xtype ?Otherwise,Use the dialog converter tool to convert your dialog field. download and install DCT from the link below.Dialog Conversion Tool This should be the resourceType in touch UIgranite/ui/components/coral/foundation/form/datepicker