[codex] Polish issue board workflows (#4224)

## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies
> - Human operators supervise that work through issue lists, issue
detail, comments, inbox groups, markdown references, and
profile/activity surfaces
> - The branch had many small UI fixes that improve the operator loop
but do not need to ship with backend runtime migrations
> - These changes belong together as board workflow polish because they
affect scanning, navigation, issue context, comment state, and markdown
clarity
> - This pull request groups the UI-only slice so it can merge
independently from runtime/backend changes
> - The benefit is a clearer board experience with better issue context,
steadier optimistic updates, and more predictable keyboard navigation

## What Changed

- Improves issue properties, sub-issue actions, blocker chips, and issue
list/detail refresh behavior.
- Adds blocker context above the issue composer and stabilizes
queued/interrupted comment UI state.
- Improves markdown issue/GitHub link rendering and opens external
markdown links in a new tab.
- Adds inbox group keyboard navigation and fold/unfold support.
- Polishes activity/avatar/profile/settings/workspace presentation
details.

## Verification

- `pnpm exec vitest run ui/src/components/IssueProperties.test.tsx
ui/src/components/IssueChatThread.test.tsx
ui/src/components/MarkdownBody.test.tsx ui/src/lib/inbox.test.ts
ui/src/lib/optimistic-issue-comments.test.ts`

## Risks

- Low to medium risk: changes are UI-focused but cover high-traffic
issue and inbox surfaces.
- This branch intentionally does not include the backend runtime changes
from the companion PR; where UI calls newer API filters, unsupported
servers should continue to fail visibly through existing API error
handling.
- Visual screenshots were not captured in this heartbeat; targeted
component/helper tests cover the changed behavior.

> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.

## Model Used

- OpenAI Codex, GPT-5-based coding agent runtime, shell/git tool use
enabled. Exact hosted model build and context window are not exposed in
this Paperclip heartbeat environment.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [ ] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

ui/src/components/IssuesList.tsx

@@ -111,6 +111,20 @@ function getInitialViewState(key: string, initialAssignees?: string[]): IssueVie
   };
 }
 
+function getInitialWorkspaceViewState(
+  key: string,
+  initialAssignees?: string[],
+  initialWorkspaces?: string[],
+): IssueViewState {
+  const stored = getInitialViewState(key, initialAssignees);
+  if (!initialWorkspaces) return stored;
+  return {
+    ...stored,
+    workspaces: initialWorkspaces,
+    statuses: [],
+  };
+}
+
 function getIssueColumnsStorageKey(key: string): string {
   return `${key}:issue-columns`;
 }
@@ -188,6 +202,7 @@ interface IssuesListProps {
   viewStateKey: string;
   issueLinkState?: unknown;
   initialAssignees?: string[];
+  initialWorkspaces?: string[];
   initialSearch?: string;
   searchFilters?: Omit<IssueListRequestFilters, "q" | "projectId" | "limit" | "includeRoutineExecutions">;
   baseCreateIssueDefaults?: Record<string, unknown>;
@@ -270,6 +285,7 @@ export function IssuesList({
   viewStateKey,
   issueLinkState,
   initialAssignees,
+  initialWorkspaces,
   initialSearch,
   searchFilters,
   baseCreateIssueDefaults,
@@ -300,8 +316,11 @@ export function IssuesList({
   // Scope the storage key per company so folding/view state is independent across companies.
   const scopedKey = selectedCompanyId ? `${viewStateKey}:${selectedCompanyId}` : viewStateKey;
   const initialAssigneesKey = initialAssignees?.join("|") ?? "";
+  const initialWorkspacesKey = initialWorkspaces?.join("|") ?? "";
 
-  const [viewState, setViewState] = useState<IssueViewState>(() => getInitialViewState(scopedKey, initialAssignees));
+  const [viewState, setViewState] = useState<IssueViewState>(() =>
+    getInitialWorkspaceViewState(scopedKey, initialAssignees, initialWorkspaces),
+  );
   const [assigneePickerIssueId, setAssigneePickerIssueId] = useState<string | null>(null);
   const [assigneeSearch, setAssigneeSearch] = useState("");
   const [issueSearch, setIssueSearch] = useState(initialSearch ?? "");
@@ -315,14 +334,14 @@ export function IssuesList({
   }, [initialSearch]);
 
   // Reload view state whenever the persisted context changes.
-  const prevViewStateContextKey = useRef(`${scopedKey}::${initialAssigneesKey}`);
+  const prevViewStateContextKey = useRef(`${scopedKey}::${initialAssigneesKey}::${initialWorkspacesKey}`);
   useEffect(() => {
-    const nextContextKey = `${scopedKey}::${initialAssigneesKey}`;
+    const nextContextKey = `${scopedKey}::${initialAssigneesKey}::${initialWorkspacesKey}`;
     if (prevViewStateContextKey.current !== nextContextKey) {
       prevViewStateContextKey.current = nextContextKey;
-      setViewState(getInitialViewState(scopedKey, initialAssignees));
+      setViewState(getInitialWorkspaceViewState(scopedKey, initialAssignees, initialWorkspaces));
     }
-  }, [scopedKey, initialAssignees, initialAssigneesKey]);
+  }, [scopedKey, initialAssignees, initialAssigneesKey, initialWorkspaces, initialWorkspacesKey]);
 
   const prevColumnsScopedKey = useRef(scopedKey);
   useEffect(() => {