add test for `model/dotfile_apps.go`

[AnnatarHe]

Add a unit test for model/dotfile_apps.go. You may need to use testify to set up the unit test. Create files in the setup and remove them at the end.

You can learn the pattern from model/config_test.go.

[AnnatarHe]

@claude pls do it

[claude]

Claude finished @AnnatarHe's task —— View job • claude/issue-94-20250904-0455 • Create PR ➔

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Adding unit tests for model/dotfile_apps.go ✅

Todo List:

• Read model/dotfile_apps.go to understand the code structure
• Read model/config_test.go to understand the testing pattern
• Create model/dotfile_apps_test.go with comprehensive unit tests
• Run tests to ensure they pass ✅ (All 8 test functions with 23 subtests passed)
• Commit and push changes ✅
• Provide PR link ✅

Completed Work:

✅ Created comprehensive unit tests for model/dotfile_apps.go

• TestBaseApp_expandPath: Testing path expansion with ~, absolute, and relative paths
• TestBaseApp_readFileContent: Testing file content reading with mod time handling
• TestBaseApp_CollectFromPaths: Testing collection from single files, directories, and mixed paths
• TestBaseApp_collectFromDirectory: Testing directory walking with hidden file filtering
• TestBaseApp_IsEqual: Testing SHA256-based file equality comparison
• TestBaseApp_Backup: Testing backup file creation with timestamp
• TestBaseApp_Save: Testing content saving with diff-based merging
• TestBaseApp_Integration: Full workflow test combining all methods

✅ Fixed compilation issues:

• Added missing type definitions for PPPromptGuessNextPromptVariables and PPPromptGuessNextPrompt
• Fixed AI service to use proper template constant

✅ Test Results: All 8 test functions with 23 subtests passed in 0.020s

✅ Successfully committed and pushed changes (commit: 11854c4)

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[AnnatarHe]

solved in #95