new!: complete revision. names and structure of program items was changed

[sttk]

This PR is a complete rewrite of the source code.

1. Renamed interface and class names:

   Dax → DataAcc
DaxBase → DataHub
DaxConn → DataConn
DaxSrc → DataSrc

2. Replace sabi.Err to errs.Err

All comments have been removed. A separate PR will be created to add comments.

[Copilot]

Pull Request Overview

This PR completes a full revision of the codebase to reflect updated naming conventions and structure, primarily renaming core interfaces and classes and updating tests accordingly.

• Renamed interfaces and classes (Dax → DataAcc, DaxBase → DataHub, DaxConn → DataConn, DaxSrc → DataSrc) and adjusted all imports.
• Updated error package references from sabi.Err to errs.Err.
• Removed all comments; a separate PR will add new documentation.

Reviewed Changes

Copilot reviewed 47 out of 48 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/test/java/com/github/sttk/sabi/internal/DataSrcListTest.java	Updated imports and class names to DataSrc/DataConn; test logic kept intact.
src/test/java/com/github/sttk/sabi/internal/DataHubInnerTest.java	Updated imports and class names; test cases now use DataHub and DataHubInner.
src/test/java/com/github/sttk/sabi/internal/DataConnListTest.java	Updated imports and class names to DataConn and DataConnContainer.
src/test/java/com/github/sttk/sabi/internal/DataAccTest.java	Updated imports and class names to DataAcc, DataHub, and Logic interfaces.
src/test/java/com/github/sttk/sabi/internal/AsyncGroupImplTest.java	Updated imports and class names to AsyncGroupImpl and Runner.

Comments suppressed due to low confidence (3)

src/test/java/com/github/sttk/sabi/internal/DataSrcListTest.java:37

• The word "setupped" is misspelled. Consider using "setup", "set up", or a clearer phrase like "setup completed".

      logger.add(String.format("SyncDataSrc %d setupped", this.id));

src/test/java/com/github/sttk/sabi/internal/DataHubInnerTest.java:1

• [nitpick] This test class exceeds 2,000 lines, which makes it hard to navigate and maintain. Consider splitting it into smaller, focused test classes (e.g., global setup, local setup, transaction behavior).

package com.github.sttk.sabi.internal;