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/components/sidebar-workspace-list.tsx

@@ -84,6 +84,7 @@ import {
 } from "@/components/ui/dropdown-menu";
 import { SyncedLoader } from "@/components/synced-loader";
 import { useToast } from "@/contexts/toast-context";
+import { getForgePresentation, normalizeForge } from "@/git/forge";
 import { toWorktreeArchiveRisk } from "@/git/worktree-archive-warning";
 import { hasVisibleOrderChanged, mergeWithRemainder } from "@/utils/sidebar-reorder";
 import { decideLongPressMove } from "@/utils/sidebar-gesture-arbitration";
@@ -319,12 +320,14 @@ export function PrBadge({ hint }: { hint: PrHint }) {
 
   const textStyle = isHovered ? prBadgeTextHoveredCombined : prBadgeStyles.text;
   const iconUniProps = isHovered ? foregroundColorMapping : getPrIconUniMapping(hint.state);
+  const presentation = getForgePresentation(normalizeForge(hint.forge));
 
   return (
     <Pressable
       accessibilityRole="link"
       accessibilityLabel={t("workspace.git.pr.accessibility.pullRequest", {
         number: hint.number,
+        context: presentation.changeRequestContext,
       })}
       hitSlop={4}
       onPressIn={handlePressIn}
@@ -339,6 +342,7 @@ export function PrBadge({ hint }: { hint: PrHint }) {
         <ThemedGitPullRequest size={12} uniProps={iconUniProps} />
       )}
       <Text style={textStyle} numberOfLines={1}>
+        {presentation.numberPrefix}
         {hint.number}
       </Text>
     </Pressable>