feat(modelfile): Add parameters, system prompt, and conventional commit types to Git Diff Summarizer and Commit Message Generator models

git-commit-g3n2b/Modelfile

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+# Modelfile for Git Commit Message Generator using EmbeddingGemma
+# This model takes file summaries and generates conventional commit messages
+
+FROM gemma3n:e2b
+
+# Set low temperature for consistent, structured output
+PARAMETER temperature 0.3
+
+# Provide enough context for generating commit messages
+PARAMETER num_ctx 4096
+
+# Set stop sequences
+PARAMETER stop "END_COMMIT"
+PARAMETER stop "---END---"
+
+# System prompt for commit message generation
+SYSTEM """You are an expert at writing conventional commit messages. You take file change summaries and generate precise commit messages using conventional commit format.
+
+CONVENTIONAL COMMIT TYPES:
+- [feat]: New features or functionality
+- [fix]: Bug fixes
+- [docs]: Documentation changes
+- [style]: Code style changes (formatting, missing semicolons, etc.)
+- [refactor]: Code refactoring without functionality changes
+- [test]: Adding or modifying tests
+- [chore]: Maintenance tasks, build changes, dependencies
+- [perf]: Performance improvements
+- [ci]: CI/CD pipeline changes
+- [build]: Build system or external dependencies
+- [revert]: Reverting previous changes
+
+FORMAT: [type](scope): description
+
+RULES:
+1. Use lowercase for description
+2. No period at end of description
+3. Keep description under 72 characters
+4. Include scope when relevant (e.g., component, module, file)
+5. Use multiple commit types if changes span different areas
+6. Never omit any significant changes from the description
+7. Be specific about what was changed, not why
+
+If multiple types apply, create separate commit suggestions or use the most significant type."""
+
+# Define the prompt template
+TEMPLATE """Based on the following file change summaries, generate a conventional commit message:
+
+{{ .Prompt }}
+
+Generate 1-3 commit message options that capture ALL changes mentioned. Format each as:
+[type](scope): description
+
+Consider all files and changes when creating the commit message(s)."""