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/screens/new-workspace-picker-item.ts

@@ -1,16 +1,16 @@
 import type { CreatePaseoWorktreeInput } from "@getpaseo/client/internal/daemon-client";
-import type { GitHubSearchItem } from "@getpaseo/protocol/messages";
+import type { ForgeSearchItem } from "@getpaseo/protocol/messages";
 
 export type PickerItem =
   | { kind: "branch"; name: string }
   | {
       kind: "github-pr";
-      item: GitHubSearchItem;
+      item: ForgeSearchItem;
     };
 
 export type PickerCheckoutRequest = Pick<
   CreatePaseoWorktreeInput,
-  "action" | "refName" | "githubPrNumber"
+  "action" | "refName" | "checkoutSource" | "githubPrNumber"
 >;
 
 export function pickerItemToCheckoutRequest(
@@ -22,10 +22,23 @@ export function pickerItemToCheckoutRequest(
       return { action: "branch-off", refName: item.name };
     case "github-pr": {
       const headRefName = item.item.headRefName?.trim();
+      const forge = item.item.forge ?? "github";
       return {
         action: "checkout",
         ...(headRefName ? { refName: headRefName } : {}),
-        githubPrNumber: item.item.number,
+        checkoutSource: {
+          kind: "change_request",
+          forge,
+          number: item.item.number,
+          ...(item.item.projectPath ? { projectPath: item.item.projectPath } : {}),
+        },
+        ...(forge === "github"
+          ? {
+              // COMPAT(githubPrNumber): added in v0.1.106, remove after 2026-12-28 once
+              // daemon floor parses checkoutSource.
+              githubPrNumber: item.item.number,
+            }
+          : {}),
       };
     }
   }