fix: clean up stale beta version strings and broken links in READMEs

- apps-cli: update usage example from 2.0.0-beta.2/node-v18 to 2.0.0/node-v22
- export-to-csv: update usage example from 2.0.0-beta.9 to 2.0.0
- cli-tsgen: remove @beta from install command, update migration note to 5.0.0
- regex-validate: fix License badge to point to monorepo path

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: cs-raj

packages/contentstack-apps-cli/README.md

@@ -24,7 +24,7 @@ $ npm install -g @contentstack/apps-cli
 $ csdx COMMAND
 running command...
 $ csdx (--version|-v)
-@contentstack/apps-cli/2.0.0-beta.2 darwin-arm64 node-v18.20.2
+@contentstack/apps-cli/2.0.0 darwin-arm64 node-v22.x
 $ csdx --help [COMMAND]
 USAGE
   $ csdx COMMAND

packages/contentstack-cli-cm-regex-validate/README.md

@@ -8,7 +8,7 @@ and rectify them.
 [![oclif](https://img.shields.io/badge/cli-oclif-brightgreen.svg)](https://oclif.io)
 [![Version](https://img.shields.io/npm/v/@contentstack/cli-cm-regex-validate.svg)](https://npmjs.org/package/@contentstack/cli-cm-regex-validate)
 [![Downloads/week](https://img.shields.io/npm/dw/@contentstack/cli-cm-regex-validate.svg)](https://npmjs.org/package/@contentstack/cli-cm-regex-validate)
-[![License](https://img.shields.io/npm/l/cli-cm-regex-validate.svg)](https://github.com/contentstack/cli-cm-regex-validate/blob/master/package.json)
+[![License](https://img.shields.io/npm/l/@contentstack/cli-cm-regex-validate.svg)](https://github.com/contentstack/cli-plugins/blob/main/packages/contentstack-cli-cm-regex-validate/package.json)
 
 <!-- toc -->
 * [Regex Validation CLI Plugin](#regex-validation-cli-plugin)

packages/contentstack-cli-tsgen/README.md

@@ -12,12 +12,12 @@ Source lives in the [contentstack/cli-plugins](https://github.com/contentstack/c
 Requires **Contentstack CLI 2.x beta**:
 
 ```shell
-$ csdx plugins:install contentstack-cli-tsgen@beta
+$ csdx plugins:install contentstack-cli-tsgen
 ```
 
 ## Migration
 
-- **Monorepo / v2 CLI:** See [TSGEN-MIGRATION.md](../../TSGEN-MIGRATION.md) and package [MIGRATION.md](./MIGRATION.md) for `5.0.0-beta.0`.
+- **Monorepo / v2 CLI:** See [TSGEN-MIGRATION.md](../../TSGEN-MIGRATION.md) and package [MIGRATION.md](./MIGRATION.md) for `5.0.0`.
 - **Older plugin versions:** Refer to [MIGRATION.md](./MIGRATION.md) for v3→v4 and earlier schema changes.
 
 ## How to use this plugin

packages/contentstack-export-to-csv/README.md

@@ -19,7 +19,7 @@ $ npm install -g @contentstack/cli-cm-export-to-csv
 $ csdx COMMAND
 running command...
 $ csdx (-v|--version|version)
-@contentstack/cli-cm-export-to-csv/2.0.0-beta.9 darwin-arm64 node-v22.21.1
+@contentstack/cli-cm-export-to-csv/2.0.0 darwin-arm64 node-v22.21.1
 $ csdx --help [COMMAND]
 USAGE
   $ csdx COMMAND