feat: Docker File Combobox Selector

[jnarowski]

Summary

Replaced text input with searchable file selector combobox for Docker file path configuration:

• Created reusable useFileSearch hook with 150ms debouncing and optional extension filtering
• Built FileSelectCombobox component integrating file tree fetching, search, and Combobox UI
• Refactored ChatPromptInputFiles to use shared useFileSearch hook (~15 lines removed, zero behavior change)
• Updated ProjectEditForm to use Controller + FileSelectCombobox with path conversion helpers

Key Changes

• New Hook: useFileSearch - Debounced file search with extension filtering, returns FileItem[] for max reusability
• New Component: FileSelectCombobox - Searchable file selector with custom FileItem rendering, mobile drawer support
• Path Handling: Stores relative paths in DB, uses absolute paths internally for unique identification
• DRY Principle: Extracted shared search logic from ChatPromptInputFiles for reuse

Files Changed

• apps/app/src/client/hooks/useFileSearch.ts (new)
• apps/app/src/client/components/FileSelectCombobox.tsx (new)
• apps/app/src/client/pages/projects/sessions/components/ChatPromptInputFiles.tsx (refactored)
• apps/app/src/client/pages/projects/components/ProjectEditForm.tsx (enhanced)
• apps/app/src/client/components/Combobox.tsx (added onSearchChange support)

Validation

• ✓ Type-check passed
• ✓ Build succeeded
• ✓ All 11 spec tasks completed
• ✓ Manual testing: file selection, search, path conversion working correctly

Closes #2511291207-docker-file-combobox

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Project	Deployment	Preview	Comments	Updated (UTC)
agentcmd-website	Ready	Preview	Comment	Nov 29, 2025 7:49pm