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/i18n/resources/en.ts

@@ -100,6 +100,7 @@ export const en = {
       addImage: "Add image",
       addFile: "Upload file",
       addIssueOrPr: "Add issue or PR",
+      addIssueOrPr_mr: "Add issue or MR",
       dropImagesHere: "Drop images here",
       dropFilesHere: "Drop files here",
       editQueuedMessage: "Edit queued message",
@@ -107,8 +108,8 @@ export const en = {
       openImage: "Open image attachment",
       removeImage: "Remove image attachment",
       removeFile: "Remove file attachment",
-      openGithub: "Open {{kind}} #{{number}}",
-      removeGithub: "Remove {{kind}} #{{number}}",
+      openGithub: "Open {{kind}} {{number}}",
+      removeGithub: "Remove {{kind}} {{number}}",
       element: "Element",
       openBrowserElement: "Open browser element attachment",
       removeBrowserElement: "Remove browser element attachment",
@@ -132,7 +133,9 @@ export const en = {
       searching: "Searching...",
       noResults: "No results found.",
       searchPlaceholder: "Search issues and PRs...",
+      searchPlaceholder_mr: "Search issues and MRs...",
       title: "Attach issue or PR",
+      title_mr: "Attach issue or MR",
     },
   },
   agentControls: {
@@ -612,10 +615,14 @@ export const en = {
           success: "Pulled and pushed",
         },
         viewPr: "View PR",
+        viewPr_mr: "View MR",
         createPr: {
           label: "Create PR",
           pending: "Creating PR...",
           success: "PR Created",
+          label_mr: "Create MR",
+          pending_mr: "Creating MR...",
+          success_mr: "MR Created",
         },
         mergeBranch: {
           label: "Merge locally",
@@ -638,6 +645,11 @@ export const en = {
           rebase: "Merge PR (rebase)",
           pending: "Merging PR...",
           success: "PR merged",
+          squash_mr: "Merge MR (squash)",
+          merge_mr: "Merge MR (merge)",
+          rebase_mr: "Merge MR (rebase)",
+          pending_mr: "Merging MR...",
+          success_mr: "MR merged",
         },
         autoMerge: {
           enableSquash: "Auto merge (squash)",
@@ -649,7 +661,8 @@ export const en = {
           disabled: "Auto-merge disabled",
         },
         unavailable: {
-          viewPrNoGithub: "View PR isn't available right now because GitHub isn't connected",
+          viewPrNoForge:
+            "View {{noun}} isn't available right now because {{brand}} isn't connected",
           pullNoRemote:
             "Pull isn't available here because this branch is not connected to a remote yet",
           pullDirty:
@@ -663,8 +676,13 @@ export const en = {
             "Pull and push isn't available here because this branch is not connected to a remote yet",
           pullAndPushDirty:
             "Pull and push isn't available while you have local changes so commit or stash them first",
+          pullAndPushNoIncoming:
+            "Pull and push isn't available because there are no incoming changes to pull first",
           pullAndPushInSync: "Pull and push isn't available because this branch is already in sync",
-          createPrNoGithub: "Create PR isn't available right now because GitHub isn't connected",
+          pullAndPushNothingToPush:
+            "Pull and push isn't available because there is nothing new to send after pulling",
+          createPrNoForge:
+            "Create {{noun}} isn't available right now because {{brand}} isn't connected",
           createPrNoCommits:
             "Create PR isn't available because this branch doesn't have any new commits yet",
           mergeNoBase: "Merge isn't available because we couldn't determine the base branch",
@@ -678,6 +696,10 @@ export const en = {
           updateCurrent:
             "Update isn't available because this branch is already up to date with {{baseRef}}",
           mergePrNoGithub: "Merge PR isn't available right now because GitHub isn't connected",
+          archiveNotWorktree:
+            "Archive isn't available here because this workspace was not created as a Paseo worktree",
+          mergePrNoForge:
+            "Merge {{noun}} isn't available right now because {{brand}} isn't connected",
           mergePrMissing: "Merge PR isn't available because there isn't a pull request yet",
           mergePrDraft: "Merge PR isn't available because the pull request is still a draft",
           mergePrMerged: "Merge PR isn't available because the pull request is already merged",
@@ -685,7 +707,7 @@ export const en = {
           mergePrConflicts: "Merge PR isn't available because the pull request has conflicts",
           mergePrQueue: "Merge PR isn't available here because this repository uses a merge queue",
           mergePrNotReady:
-            "Merge PR isn't available until GitHub reports the pull request is ready to merge",
+            "Merge {{noun}} isn't available until {{brand}} reports the {{noun}} is ready to merge",
           autoMergeCannotDisable: "Auto-merge is enabled, but this account can't disable it",
         },
         toasts: {
@@ -735,7 +757,7 @@ export const en = {
         expandAllFolders: "Expand all folders",
         refreshing: "Refreshing",
         refresh: "Refresh",
-        refreshState: "Refresh git and GitHub state",
+        refreshState: "Refresh git and {{brand}} state",
         failedRefresh: "Failed to refresh git state.",
         emptyHiddenWhitespace: "No visible changes after hiding whitespace",
         emptyUncommitted: "No uncommitted changes",
@@ -771,13 +793,23 @@ export const en = {
       pr: {
         actions: {
           viewPullRequest: "View",
+          openOn: "Open on {{brand}}",
         },
         sections: {
           checks: "Checks",
+          pipeline: "Pipeline",
           reviews: "Reviews",
         },
+        empty: {
+          noJobs: "No jobs",
+          loadingPipeline: "Loading pipeline…",
+          pipelineJobsLoadFailed: "Could not load pipeline jobs",
+          allowedToFail: "allowed to fail",
+        },
+        approvals: "{{given}} of {{required}} approvals",
         accessibility: {
           pullRequest: "Pull request #{{number}}",
+          pullRequest_mr: "Merge request !{{number}}",
         },
         states: {
           draft: "Draft",
@@ -794,11 +826,19 @@ export const en = {
         time: {
           justNow: "just now",
         },
+        thread: {
+          discussion: "Discussion thread",
+        },
         errors: {
           statusLoadFailed: "Unable to load pull request status",
           activityLoadFailed: "Unable to load pull request activity",
         },
       },
+      forgeSetup: {
+        installCli: "Install the {{cli}} CLI to use {{brand}} features.",
+        signIn: "Run {{command}} to use {{brand}} features.",
+        generic: "Set up {{brand}} on this host to use its features.",
+      },
     },
   },
   sidebar: {
@@ -930,9 +970,9 @@ export const en = {
     refPicker: {
       startingRef: "Starting ref",
       chooseStart: "Choose where to start from",
-      checkoutHint: "Check out PR #{{number}}?",
-      checkoutPr: "Check out PR #{{number}}",
-      dismissCheckoutHint: "Dismiss PR #{{number}} checkout hint",
+      checkoutHint: "Check out {{noun}} {{numberPrefix}}{{number}}?",
+      checkoutPr: "Check out {{noun}} {{numberPrefix}}{{number}}",
+      dismissCheckoutHint: "Dismiss {{noun}} {{numberPrefix}}{{number}} checkout hint",
       intoBase: "into {{baseRef}}",
       searching: "Searching...",
       noMatchingRefs: "No matching refs.",