Update API endpoints in SKILL.md for opentrade-wallet

Remove PLAN.md and TASKLIST.md from opentrade-newsliquid documentation

Update API endpoints in documentation for opentrade-newsliquid skill

Enhance SKILL.md for opentrade-newsliquid:

feat(opentrade): Introduce opentrade-newsliquid skill for CEX trading

feat(opentrade): Add custodial wallet management functionality

Refine README.md by consolidating Bearer token authentication details into a single section, removing redundant information while maintaining clarity on token usage and configuration options.

Update README.md to change license from Apache-2.0 to MIT, reflecting a shift in licensing terms.

Refactor opentrade install script to remove caching mechanism for version checks, simplifying the update process. Now directly compares local version with the latest GitHub release without relying on a time-based cache.

Update opentrade CLI version to 1.0.2 in Cargo.toml to reflect the latest changes and improvements.

Add new trader entry for 6551dex in SKILL.md files across opentrade modules

Update SKILL.md files for opentrade skills to replace `router` and `version` fields with `trader` and `api` in API response format. Revise usage instructions to reflect these changes, ensuring consistency across documentation and improving user guidance on command structure and mandatory flags.

Enhance API error handling in opentrade CLI by introducing a check for a success field in the API response. If the success field indicates failure, an error message is extracted from the response. This improves error reporting and ensures clearer communication of API issues to users.

Refactor API client instantiation in opentrade CLI for improved readability by removing unnecessary line breaks in the client function. This change enhances code clarity while maintaining functionality.

Update opentrade CLI to version 1.0.1 and replace 'version' flag with 'api' in command options. Adjusted API client structure and documentation to reflect the new flag usage, ensuring consistency across commands and improving user guidance in SKILL.md files.