feat: add include_patch parameter to get_commit tool

Add a new optional parameter `include_patch` (default: false) to the
get_commit tool that controls whether the patch/diff content is included
for each file in the response.

This is a non-breaking change:
- Existing behavior is preserved (patch not included by default)
- Users can opt-in by setting include_patch: true
- Only applies when include_diff is also true

Changes:
- Added `Patch` field to MinimalCommitFile struct
- Added `include_patch` parameter to get_commit tool schema
- Updated convertToMinimalCommit to accept includePatch parameter
- Patch content is only included when explicitly requested

Use case: AI agents and code review tools that need to analyze
actual code changes without additional API calls.

Author: Timur

pkg/github/minimal_types.go

@@ -75,6 +75,7 @@ type MinimalCommitFile struct {
 	Additions int    `json:"additions,omitempty"`
 	Deletions int    `json:"deletions,omitempty"`
 	Changes   int    `json:"changes,omitempty"`
+	Patch     string `json:"patch,omitempty"`
 }
 
 // MinimalCommit is the trimmed output type for commit objects.
@@ -173,7 +174,7 @@ func convertToMinimalUser(user *github.User) *MinimalUser {
 }
 
 // convertToMinimalCommit converts a GitHub API RepositoryCommit to MinimalCommit
-func convertToMinimalCommit(commit *github.RepositoryCommit, includeDiffs bool) MinimalCommit {
+func convertToMinimalCommit(commit *github.RepositoryCommit, includeDiffs bool, includePatch bool) MinimalCommit {
 	minimalCommit := MinimalCommit{
 		SHA:     commit.GetSHA(),
 		HTMLURL: commit.GetHTMLURL(),
@@ -243,6 +244,9 @@ func convertToMinimalCommit(commit *github.RepositoryCommit, includeDiffs bool)
 					Deletions: file.GetDeletions(),
 					Changes:   file.GetChanges(),
 				}
+				if includePatch {
+					minimalFile.Patch = file.GetPatch()
+				}
 				minimalCommit.Files = append(minimalCommit.Files, minimalFile)
 			}
 		}

pkg/github/repositories.go

@@ -45,11 +45,16 @@ func GetCommit(t translations.TranslationHelperFunc) inventory.ServerTool {
 						Type:        "string",
 						Description: "Commit SHA, branch name, or tag name",
 					},
-					"include_diff": {
-						Type:        "boolean",
-						Description: "Whether to include file diffs and stats in the response. Default is true.",
-						Default:     json.RawMessage(`true`),
-					},
+				"include_diff": {
+					Type:        "boolean",
+					Description: "Whether to include file diffs and stats in the response. Default is true.",
+					Default:     json.RawMessage(`true`),
+				},
+				"include_patch": {
+					Type:        "boolean",
+					Description: "Whether to include the patch (unified diff) content for each file. Only applies when include_diff is true. Default is false.",
+					Default:     json.RawMessage(`false`),
+				},
 				},
 				Required: []string{"owner", "repo", "sha"},
 			}),
@@ -72,6 +77,10 @@ func GetCommit(t translations.TranslationHelperFunc) inventory.ServerTool {
 			if err != nil {
 				return utils.NewToolResultError(err.Error()), nil, nil
 			}
+			includePatch, err := OptionalBoolParamWithDefault(args, "include_patch", false)
+			if err != nil {
+				return utils.NewToolResultError(err.Error()), nil, nil
+			}
 			pagination, err := OptionalPaginationParams(args)
 			if err != nil {
 				return utils.NewToolResultError(err.Error()), nil, nil
@@ -105,7 +114,7 @@ func GetCommit(t translations.TranslationHelperFunc) inventory.ServerTool {
 			}
 
 			// Convert to minimal commit
-			minimalCommit := convertToMinimalCommit(commit, includeDiff)
+			minimalCommit := convertToMinimalCommit(commit, includeDiff, includePatch)
 
 			r, err := json.Marshal(minimalCommit)
 			if err != nil {
@@ -212,7 +221,7 @@ func ListCommits(t translations.TranslationHelperFunc) inventory.ServerTool {
 			// Convert to minimal commits
 			minimalCommits := make([]MinimalCommit, len(commits))
 			for i, commit := range commits {
-				minimalCommits[i] = convertToMinimalCommit(commit, false)
+				minimalCommits[i] = convertToMinimalCommit(commit, false, false)
 			}
 
 			r, err := json.Marshal(minimalCommits)