feat(forge): pluggable forge abstraction + GitLab and Gitea/Forgejo/Codeberg (#1913)

* refactor(forge): forge-neutral foundation (GitHub-only)

Decouple git-hosting from GitHub behind a neutral abstraction (issue #1616), GitHub-only for now; existing GitHub behaviour is unchanged.

- Forge manifest, neutral ForgeService contract, forge registry + resolver, and a client forge-module registry.
- GitHub code renamed to the neutral shape; PR/Issue attachment wording preserved.
- forge.search.response enums parse tolerantly (unknown kind/auth state degrade instead of breaking the client).
- createPullRequest reports typed CLI/auth errors instead of a generic message.
- forge-resolver host/remote caches are LRU-bounded.
- Forge host trust is explicit: only a known cloud host or a CLI-authenticated host is ever talked to; an unauthenticated GitHub Enterprise host fails resolution instead of routing to github.com.
- Docs: forge-providers guide, glossary and i18n forge-copy conventions, architecture and rpc-namespacing terminology.
- Vitest React Native mocks (unistyles, svg, linking, lucide) consolidated into shared aliased test-stubs.

* feat(forge): GitLab adapter, forge-aware UI, pipelines and approvals

GitLab adapter over the glab CLI on the neutral contracts: MR status, forge-aware UI, pipeline tree, and N-of-M approvals.

- threadIsResolved is part of the neutral timeline item.
- Pipeline load failures show an error instead of an empty section.
- Manual pipeline jobs render as pending.
- Fork/detached MR head pipelines are fetched by MR iid (glab ci get --merge-request).

* feat(forge): Gitea family adapter (Gitea, Forgejo, Codeberg)

One adapter over the tea CLI serving Gitea, Forgejo, and Codeberg on the neutral contracts.

- CI status aggregates commit statuses and Actions runs together.
- Gitea's terminal "warning" state maps to failure on server and client.
- Gitea Actions check details are reachable from the PR pane by workflowRunId.

* refactor(forge): localize compatibility handling

* test(forge): expect normalized GitLab facts

---------

Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>

packages/app/src/hooks/sidebar-workspaces-view-model.test.ts

@@ -8,11 +8,62 @@ import {
   buildSidebarWorkspacePlacementModel,
   buildSidebarProjectsFromStructure,
   computeSidebarOrderUpdates,
+  createSidebarWorkspaceEntry,
   deriveSidebarLoadingState,
   shouldShowSidebarHostLabels,
   type SidebarProjectEntry,
 } from "./sidebar-workspaces-view-model";
 
+function workspaceWithForge(forge: string | undefined, prUrl: string): WorkspaceDescriptor {
+  return {
+    id: "ws-1",
+    projectId: "proj",
+    projectDisplayName: "repo",
+    projectRootPath: "/repo",
+    workspaceDirectory: "/repo",
+    projectKind: "git",
+    workspaceKind: "worktree",
+    name: "feature",
+    title: null,
+    status: "done",
+    statusEnteredAt: null,
+    archivingAt: null,
+    diffStat: null,
+    scripts: [],
+    forge,
+    githubRuntime: {
+      featuresEnabled: true,
+      pullRequest: {
+        url: prUrl,
+        title: "Change",
+        state: "open",
+        baseRefName: "main",
+        headRefName: "feature",
+        isMerged: false,
+      },
+      error: null,
+    },
+  };
+}
+
+describe("createSidebarWorkspaceEntry forge threading", () => {
+  it("threads a gitlab summary forge onto the prHint", () => {
+    const entry = createSidebarWorkspaceEntry({
+      serverId: "srv",
+      workspace: workspaceWithForge("gitlab", "https://gitlab.com/group/proj/-/merge_requests/7"),
+    });
+    expect(entry.prHint).toMatchObject({ number: 7, forge: "gitlab" });
+  });
+
+  it("falls back to github when the summary omits forge (old daemon)", () => {
+    const entry = createSidebarWorkspaceEntry({
+      serverId: "srv",
+      workspace: workspaceWithForge(undefined, "https://github.com/acme/repo/pull/42"),
+    });
+    expect(entry.prHint).toMatchObject({ number: 42, forge: "github" });
+  });
+});
+
 interface OrderedItem {
   key: string;
 }

packages/app/src/hooks/sidebar-workspaces-view-model.ts

@@ -164,7 +164,10 @@ export function createSidebarWorkspaceEntry(input: {
     statusEnteredAt: effectiveStatus.enteredAt,
     archivingAt: input.workspace.archivingAt,
     diffStat: input.workspace.diffStat,
-    prHint: selectPrHintFromStatus(input.workspace.githubRuntime?.pullRequest),
+    prHint: selectPrHintFromStatus(
+      input.workspace.githubRuntime?.pullRequest,
+      input.workspace.forge,
+    ),
     archiveHasUncommittedChanges: input.workspace.gitRuntime?.isDirty ?? null,
     archiveUnpushedCommitCount: input.workspace.gitRuntime?.aheadOfOrigin ?? null,
     scripts: input.workspace.scripts,