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/git/query-keys.test.ts

@@ -7,7 +7,10 @@ import {
   invalidateCheckoutGitQueriesForClient,
   invalidateCheckoutGitQueriesForServer,
 } from "@/git/query-keys";
-import { prPaneTimelineQueryKey } from "@/git/pull-request-panel/query-keys";
+import {
+  prPanePipelineQueryKey,
+  prPaneTimelineQueryKey,
+} from "@/git/pull-request-panel/query-keys";
 
 describe("checkout query keys", () => {
   const serverId = "server-1";
@@ -27,10 +30,25 @@ describe("checkout query keys", () => {
     queryClient.setQueryData(prPaneTimelineQueryKey({ serverId, cwd, prNumber: 13 }), {
       items: [],
     });
+    queryClient.setQueryData(
+      prPanePipelineQueryKey({ serverId, cwd, pipelineId: 9001, changeRequestNumber: 1 }),
+      {
+        stages: [],
+      },
+    );
     queryClient.setQueryData(
       prPaneTimelineQueryKey({ serverId, cwd: "/tmp/other", prNumber: 12 }),
       { items: [] },
     );
+    queryClient.setQueryData(
+      prPanePipelineQueryKey({
+        serverId,
+        cwd: "/tmp/other",
+        pipelineId: 9001,
+        changeRequestNumber: 1,
+      }),
+      { stages: [] },
+    );
 
     await invalidateCheckoutGitQueriesForClient(queryClient, { serverId, cwd });
 
@@ -52,11 +70,26 @@ describe("checkout query keys", () => {
       queryClient.getQueryState(prPaneTimelineQueryKey({ serverId, cwd, prNumber: 13 }))
         ?.isInvalidated,
     ).toBe(true);
+    expect(
+      queryClient.getQueryState(
+        prPanePipelineQueryKey({ serverId, cwd, pipelineId: 9001, changeRequestNumber: 1 }),
+      )?.isInvalidated,
+    ).toBe(true);
     expect(
       queryClient.getQueryState(
         prPaneTimelineQueryKey({ serverId, cwd: "/tmp/other", prNumber: 12 }),
       )?.isInvalidated,
     ).toBe(false);
+    expect(
+      queryClient.getQueryState(
+        prPanePipelineQueryKey({
+          serverId,
+          cwd: "/tmp/other",
+          pipelineId: 9001,
+          changeRequestNumber: 1,
+        }),
+      )?.isInvalidated,
+    ).toBe(false);
 
     queryClient.clear();
   });
@@ -72,6 +105,12 @@ describe("checkout query keys", () => {
     queryClient.setQueryData(prPaneTimelineQueryKey({ serverId, cwd, prNumber: 12 }), {
       items: [],
     });
+    queryClient.setQueryData(
+      prPanePipelineQueryKey({ serverId, cwd, pipelineId: 9001, changeRequestNumber: 1 }),
+      {
+        stages: [],
+      },
+    );
     // Subscription-fed diff queries are deliberately not part of the server-wide sweep.
     queryClient.setQueryData(checkoutDiffQueryKey(serverId, cwd, "base", "main", true), {
       files: [],
@@ -93,6 +132,11 @@ describe("checkout query keys", () => {
       queryClient.getQueryState(prPaneTimelineQueryKey({ serverId, cwd, prNumber: 12 }))
         ?.isInvalidated,
     ).toBe(true);
+    expect(
+      queryClient.getQueryState(
+        prPanePipelineQueryKey({ serverId, cwd, pipelineId: 9001, changeRequestNumber: 1 }),
+      )?.isInvalidated,
+    ).toBe(true);
     expect(
       queryClient.getQueryState(checkoutDiffQueryKey(serverId, cwd, "base", "main", true))
         ?.isInvalidated,