feat: add Claude Haiku model and update type annotations

[ThomasK33]

Update Claude model options and improve type annotations

This PR updates the available Claude models to include:

• Renamed "Claude Opus 4" to "Claude Opus 4.1 (Latest)"
• Added "Claude Haiku 3.5 (Latest)" as a new model option

Additionally, improves type safety throughout the codebase by:

• Adding proper type annotations for configuration parameters
• Adding explicit types for global variables
• Fixing function parameter types to use ClaudeCodeConfig where appropriate
• Properly documenting the active_diffs table with type information
• Removing an unnecessary timeout parameter in a callback function

[ThomasK33]

• feat: add focus_after_send option for terminal behavior #118
• feat: add working directory control for Claude terminal #117
• feat: add Shift+Enter keybinding for new line in terminal #116
• feat: add PartialClaudeCodeConfig type for better configuration handling #115
• feat: add option to control behavior when rejecting new file diffs #114
• feat: redesign diff view with horizontal layout and new tab options #111
• feat: add Claude Haiku model and update type annotations #110 👈 (View in Graphite)
• main

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[ThomasK33]

Merge activity

• Aug 7, 10:35 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Aug 7, 10:35 AM UTC: @ThomasK33 merged this pull request with Graphite.