refactor: remove Gmail integration from GWS toolset and agent documentation

refactfixor: consolidate individual Google Workspace toolsets into a single unified toolset

feat: integrate filesystem MCP toolset into agent and initialize workspace directory

feat: integrate Gmail, Docs, and Sheets toolsets into the agent configuration

refactor: modularize agent tools by extracting bash and calendar logic into dedicated modules

feat: add bash execution tool to agent capabilities

refactor: remove time-tracking tool and ignore .adk directory in version control

feat: add comprehensive library of persona and recipe skill definitions with updated agent configuration

docs: add instructions for symlinking centralized skills to README

feat: add Google Workspace skill definitions and registry lock file

docs: add project README with setup and usage instructions

feat: set initial adk code

init project