fix(readme): remove false PyPI badge and broken install commands (#35)

* cowork-bot: emit valid SQL for mixed-type columns and empty/nested-only roots

Type inference now collapses a column whose values mix incompatible types
(e.g. a string and an integer) to TEXT instead of keeping the first-seen
numeric type. Previously this produced INSERT statements with a quoted string
literal in a numeric column, which Postgres/MySQL reject as invalid SQL. A
NULL value is treated as "unset" so a column that first sees NULL can still
take a concrete type when a non-NULL value arrives (e.g. [null, 42] ->
INTEGER), and an all-NULL column resolves to TEXT.

convert()/generate_schema() no longer emit an invalid `CREATE TABLE "x" ();`
or `INSERT INTO "x" () VALUES ();` for an empty object or a root whose only
content is nested arrays (flatten). They now emit only the valid child
tables, or an explicit comment when nothing can be generated, instead of a
silent green no-op.

- src/json2sql/converter.py: add _infer_type/_merge_type; skip empty root tables
- tests/test_edge_cases.py: correct the two tests that encoded the old buggy
  widening behavior
- tests/test_type_inference.py: regression tests for mixed-type, NULL, and
  empty/nested-only-root cases across all three dialects
- .github/workflows/cowork-auto-pr.yml: seed server-side PR opener

* fix: remove false PyPI badge and broken json2sql-cli install commands

Author: Coding-Dev-Tools

README.md

@@ -10,8 +10,7 @@ Convert JSON files and datasets to SQL INSERT statements. Supports nested JSON,
 ![Python](https://img.shields.io/badge/python-3.10%2B-blue)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://github.com/Coding-Dev-Tools/json2sql/blob/main/LICENSE)
 |[![Open Source Alternative](https://img.shields.io/badge/Open_Source_Alternative-%E2%87%92-blue?logo=opensourceinitiative)](https://www.opensourcealternative.to/project/json2sql)
-[![CI](https://github.com/Coding-Dev-Tools/json2sql/actions/workflows/ci.yml/badge.svg)](https://github.com/Coding-Dev-Tools/json2sql/actions/workflows/ci.yml)
-[![PyPI](https://img.shields.io/pypi/v/json2sql-cli)](https://pypi.org/project/json2sql-cli/)
+|[![CI](https://github.com/Coding-Dev-Tools/json2sql/actions/workflows/ci.yml/badge.svg)](https://github.com/Coding-Dev-Tools/json2sql/actions/workflows/ci.yml)
 
 
 
@@ -23,11 +22,7 @@ Real-world scenarios:
 
 ## Installation
 
-```bash
-pip install json2sql-cli
-```
-
-Or install directly from GitHub:
+> **Note:** json2sql is not yet on public PyPI. Install via GitHub directly:
 
 ```bash
 pip install git+https://github.com/Coding-Dev-Tools/json2sql.git
@@ -47,7 +42,7 @@ scoop install json2sql
 
 **npm (Node.js wrapper):**
 ```bash
-npm install -g json2sql-cli
+npm install -g json2sql
 ```
 Then run: `json2sql --help`
 
@@ -124,7 +119,7 @@ json2sql is one of eleven CLI tools in the Revenue Holdings suite. One license c
 ---
 
 <p align="center">
-  <sub>Part of <a href="https://coding-dev-tools.github.io/revenueholdings.dev/">Revenue Holdings</a> — CLI tools built by autonomous AI.</sub>
+  <sub>Part of <a href="https://revenueholdings.dev/">Revenue Holdings</a> — CLI tools built by autonomous AI.</sub>
 </p>
 
 ## License