Add lkr-project-helper skill, model auto-config on push, and create_developer_copy SDK method

[bwebs]

Summary

• New Skill (lkr-project-helper): Adds installable skill for creating, configuring, generating, synchronizing, and deploying LookML projects via uvx lkr-dev-cli, lkr code-mode sandbox --dev-mode, and generate_lookml_with_new_files.
  • Supports interactive project instantiation from database schemas/tables, raw SQL (bq_view_lookml_generator.py), and natural language intent.
  • Accompanied by modular --dev-mode Python helper scripts for connection introspection, model binding, LookML generation, bare Git setup, asset uploads, and LookML dashboard-to-UDD conversion.
• LookML Push (lkr tools lookml push):
  • Added --reset/--no-reset flag (default True) to reset developer workspace to production prior to pushing files.
  • Automatically creates or updates LookML model configurations when .model.lkml files are pushed with declared connection: names.
• Extended SDK:
  • Added create_developer_copy (and developer_copy alias) to ExtendedLooker40SDK for POST /projects/{project_id}/developer_copy.
• Code Mode Safeguards:
  • Blocks update_session by default to prevent unintended mutations of shared OAuth tokens across CLI executions, with --allow-update-session available for explicit override.

[gemini-code-assist]

Code Review

This pull request introduces a new Looker Project Helper skill (lkr-project-helper) along with a suite of helper scripts to automate LookML project creation, database connection verification, model configuration, validation, and deployment. It also updates the CLI push command to support workspace resetting and automatic model configuration, adds a new create_developer_copy method to the extended SDK, and implements safety checks in code-mode to block or warn about update_session calls. Feedback on the changes highlights several potential runtime errors in the newly added scripts due to accessing properties on Looker SDK objects as if they were dictionaries instead of class instances, as well as a recurring typo in the # type: ignore comments.