feat(server): add GitLab glab CLI support for merge request operations

apps/server/src/git/Errors.ts

@@ -16,18 +16,30 @@ export class GitCommandError extends Schema.TaggedErrorClass<GitCommandError>()(
 }
 
 /**
- * GitHubCliError - GitHub CLI execution or authentication failed.
+ * GitHostingCliError - Git hosting CLI (gh, glab, etc.) execution or authentication failed.
  */
-export class GitHubCliError extends Schema.TaggedErrorClass<GitHubCliError>()("GitHubCliError", {
-  operation: Schema.String,
-  detail: Schema.String,
-  cause: Schema.optional(Schema.Defect),
-}) {
+export class GitHostingCliError extends Schema.TaggedErrorClass<GitHostingCliError>()(
+  "GitHostingCliError",
+  {
+    operation: Schema.String,
+    detail: Schema.String,
+    cause: Schema.optional(Schema.Defect),
+  },
+) {
   override get message(): string {
-    return `GitHub CLI failed in ${this.operation}: ${this.detail}`;
+    return `Git hosting CLI failed in ${this.operation}: ${this.detail}`;
   }
 }
 
+/**
+ * @deprecated Use GitHostingCliError instead. Kept for backwards compatibility.
+ */
+export type GitHubCliError = GitHostingCliError;
+/**
+ * @deprecated Use GitHostingCliError instead. Kept for backwards compatibility.
+ */
+export const GitHubCliError = GitHostingCliError;
+
 /**
  * TextGenerationError - Commit or PR text generation failed.
  */
@@ -63,5 +75,5 @@ export class GitManagerError extends Schema.TaggedErrorClass<GitManagerError>()(
 export type GitManagerServiceError =
   | GitManagerError
   | GitCommandError
-  | GitHubCliError
+  | GitHostingCliError
   | TextGenerationError;

apps/server/src/git/Layers/CodexTextGeneration.ts

@@ -369,7 +369,7 @@ const makeCodexTextGeneration = Effect.gen(function* () {
 
   const generatePrContent: TextGenerationShape["generatePrContent"] = (input) => {
     const prompt = [
-      "You write GitHub pull request content.",
+      "You write pull request / merge request content.",
       "Return a JSON object with keys: title, body.",
       "Rules:",
       "- title should be concise and specific",

apps/server/src/git/Layers/GitCore.ts

@@ -757,6 +757,8 @@ const makeGitCore = Effect.gen(function* () {
     statusDetails(input.cwd).pipe(
       Effect.map((details) => ({
         branch: details.branch,
+        hostingPlatform: "github" as const,
+        hostingCliAuthenticated: null,
         hasWorkingTreeChanges: details.hasWorkingTreeChanges,
         workingTree: details.workingTree,
         hasUpstream: details.hasUpstream,