feat: fork-aware issue/PR listing & OpenCode startup loading indicator (#1061)

* Add design spec: OpenCode readiness loading indicator

* Add implementation plan: OpenCode readiness loading indicator

* feat: add useOpenCodeReadiness hook

* feat: add i18n keys for common.loading

* feat: add loading state to ModelSelector

* feat: add loading state to AgentSelector

* feat: add loading state to ModelControls chat selectors

* update package-lock

* feat(github): add shared fork detection utility

* feat(github): make issue listing fork-aware

* feat(github): make PR listing fork-aware

* feat(types): add sourceRepo to issue/PR summary types

* feat(ui): add source badges to GitHub integration dialog

* feat(ui): add source badges to issue/PR picker dialogs

* feat(github): pass headRemote in PR creation for fork support

* feat(ui): add source→target label in PR tab for fork workflows

* fix(github): allow PR section on base branch when upstream remote exists

* fix(github): show PR section on any branch including main for fork→upstream PRs

* fix(github): allow PullRequestSection to render on base branch when upstream remote exists

* feat(github): auto-detect upstream repo for fork→upstream PR creation

- Add GET /api/github/repo/upstream endpoint to discover fork's upstream
- Fix PullRequestSection canShow to allow PR creation on base branch when repo is a fork
- Add virtual upstream target in remote dropdown (no explicit upstream remote needed)
- Add targetRepo parameter to /api/github/pr/create for direct upstream targeting
- Add repoUpstream() API client method and GitHubRepoUpstreamResult type

* feat(github): auto-detect upstream repo for fork→upstream PR creation

- Add GET /api/github/repo/upstream endpoint to discover fork's upstream
- Fix PullRequestSection canShow to allow PR creation on base branch when repo is a fork
- Add virtual upstream target in remote dropdown (no explicit upstream remote needed)
- Add targetRepo parameter to /api/github/pr/create for direct upstream targeting
- Add repoUpstream() API client method and GitHubRepoUpstreamResult type

* fix: complete fork→upstream PR workflow

- Server: return defaultBranch from /api/github/repo/upstream endpoint
- Server: fix cross-repo head ref construction (compare repos, not remote names)
- Server: filterActiveRemoteBranches checks all remotes, not just origin
- UI: set targetBaseBranch to upstream's default branch when using detected upstream
- UI: include all remote branches in base branch dropdown when using detected upstream
- UI: skip base===head check for cross-repo PRs (same branch name on different repos is valid)
- Types: add defaultBranch to GitHubRepoUpstreamResult

* chore: delete superpowers folder

* feat: add (local)/(remote) labels to PR branch display and adapt Repository button to selected remote

* feat: Repository button adapts to selected remote (upstream vs origin)

* fix: complete fork→upstream PR feature gaps

Server:
- Extend /api/github/repo/upstream to return defaultBranchSha and remoteName
- Reuse headRepo result instead of redundant resolveGitHubRepoFromDirectory call
- Return clear error when headRepo is null (invalid GitHub URL)

UI:
- Add upstream's default branch to availableBaseBranches when using detected upstream
- Use upstream's default branch SHA in git log for generate description (fixes 'No commits found in range main...main')
- Show qualified names (owner/repo · branch) in base branch dropdown when using detected upstream

Types:
- Add defaultBranchSha and remoteName to GitHubRepoUpstreamResult

* fix: move detectedUpstream state before availableBaseBranches to fix temporal dead zone

* fix: fetch upstream branches from GitHub API for base branch dropdown

- Add GET /api/github/repo/branches endpoint to fetch branches via Octokit
- Add repoBranches() to GitHub API client and interface
- Fetch upstream branches on detection and store in upstreamBranches state
- Include upstreamBranches in availableBaseBranches when using detected upstream
- Re-add availableBaseBranches memo and auto-correction effect that were lost
- Remove unnecessary qualified names from dropdown (upstream is already selected)

* fix: restore prStatusKey and statusEntry declarations lost during refactor

* fix: cleanly re-apply all fork→upstream PR UI changes

Restored PullRequestSection.tsx from clean base and re-applied:
- Expand detectedUpstream type with defaultBranch, defaultBranchSha, remoteName
- Add upstreamBranches state and fetch on upstream detection
- Include upstream branches in availableBaseBranches when using detected upstream
- Use upstream default branch SHA in generate description (fixes 'No commits found')
- Adapt Repository button URL to selected remote
- Add (local)/(remote)/(upstream) labels to branch display

* fix: move detectedUpstream/upstreamBranches before availableBaseBranches to fix TDZ

* style: add pill badge styling to upstream repo source labels

* fix: don't cache error PR status responses, allow force-bypass of server cache

* fix: resolve PR status cache bugs, stale directory fallback, and upstream re-detection

* fix: keep collapse button visible when scrolling long user messages

- Collapse button now sticks to top of scrollable user message content instead of scrolling away

* fix: checkbox focus ring blends into sidebar background

* fix: polish fork PR follow-ups

* fix: remove user message collapse artifact

* fix: tighten fork PR internals

* fix: check all remotes for fork PR status

* fix: recover sidebar PR status misses

---------

Signed-off-by: Islam Nofl <islamnofl.official@gmail.com>
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/vscode/src/bridge.ts

@@ -152,7 +152,9 @@ export async function handleBridgeMessage(message: BridgeRequest, ctx?: BridgeCo
       case 'api:github/issues:get':
       case 'api:github/issues:comments':
       case 'api:github/pulls:list':
-      case 'api:github/pulls:context': {
+      case 'api:github/pulls:context':
+      case 'api:github/repo:upstream':
+      case 'api:github/repo:branches': {
         return { id, type, success: false, error: GITHUB_BACKEND_DISABLED_ERROR };
       }
 

packages/vscode/webview/api/github.ts

@@ -16,6 +16,7 @@ import type {
   GitHubPullRequestStatus,
   GitHubDeviceFlowComplete,
   GitHubDeviceFlowStart,
+  GitHubRepoUpstreamResult,
   GitHubUserSummary,
 } from '@openchamber/ui/lib/api/types';
 
@@ -44,18 +45,24 @@ export const createVSCodeGitHubAPI = (): GitHubAPI => ({
 
   issuesList: async (directory: string, options?: { page?: number }) =>
     sendBridgeMessage<GitHubIssuesListResult>('api:github/issues:list', { directory, page: options?.page ?? 1 }),
-  issueGet: async (directory: string, number: number) =>
-    sendBridgeMessage<GitHubIssueGetResult>('api:github/issues:get', { directory, number }),
-  issueComments: async (directory: string, number: number) =>
-    sendBridgeMessage<GitHubIssueCommentsResult>('api:github/issues:comments', { directory, number }),
+  issueGet: async (directory: string, number: number, options?: { sourceRepo?: { owner: string; repo: string } | null }) =>
+    sendBridgeMessage<GitHubIssueGetResult>('api:github/issues:get', { directory, number, sourceRepo: options?.sourceRepo ?? null }),
+  issueComments: async (directory: string, number: number, options?: { sourceRepo?: { owner: string; repo: string } | null }) =>
+    sendBridgeMessage<GitHubIssueCommentsResult>('api:github/issues:comments', { directory, number, sourceRepo: options?.sourceRepo ?? null }),
 
   prsList: async (directory: string, options?: { page?: number }) =>
     sendBridgeMessage<GitHubPullRequestsListResult>('api:github/pulls:list', { directory, page: options?.page ?? 1 }),
-  prContext: async (directory: string, number: number, options?: { includeDiff?: boolean; includeCheckDetails?: boolean }) =>
+  prContext: async (directory: string, number: number, options?: { includeDiff?: boolean; includeCheckDetails?: boolean; sourceRepo?: { owner: string; repo: string } | null }) =>
     sendBridgeMessage<GitHubPullRequestContextResult>('api:github/pulls:context', {
       directory,
       number,
       includeDiff: Boolean(options?.includeDiff),
       includeCheckDetails: Boolean(options?.includeCheckDetails),
+      sourceRepo: options?.sourceRepo ?? null,
     }),
+
+  repoUpstream: async (directory: string) =>
+    sendBridgeMessage<GitHubRepoUpstreamResult>('api:github/repo:upstream', { directory }),
+  repoBranches: async (owner: string, repo: string) =>
+    sendBridgeMessage<string[]>('api:github/repo:branches', { owner, repo }),
 });