## Conversation Overview
A single user message. The user pasted a large, partially garbled/mangled unified diff of changes to a **Next.js self‑hosted board/to‑do web app** and asked the assistant to *"Generate a concise and descriptive git commit message for the selected code changes. The message should summarize the changes made, their purpose, and any relevant context. Do not edit any files, just provide the commit message as output."* No assistant reply has been produced yet.
## Subject of the Diff (what the changes do)
The diff introduces two related **AI features** plus shared AI plumbing:
1. **Per‑group "Status Update" feature**
- New `components/board/status-update-dialog.tsx` — a dialog that generates a group status update, supports a follow‑up chat list (`ChatMessageList`, `MarkdownPreview`), copy‑to‑clipboard, and calls `converseAboutGroupStatus(group.id, next)`.
- `components/board/group-card.tsx` (modified) — imports `ClipboardList` + `StatusUpdateDialog`, adds `statusUpdateOpen` state, and a **"Status Update"** dropdown item gated on `aiConfigured`.
- New `lib/actions/group-status-ai.ts` (`"use server"`) — backing server action(s) incl. `converseAboutGroupStatus`.
2. **"Global Chat" feature**
- New `lib/actions/global-chat.ts` (`"use server"`) — `sendChatMessage(messages: ChatMessage[])`: free‑form Q&A across every board the user owns (Home + all Projects). Re‑fetches/re‑serializes context each turn; uses `requireUserId()`, `getAllGroupsForUser()`, `formatAllGroupsForPrompt()`, and a shared `callChatCompletion` helper. Includes a `SYSTEM_PROMPT_HEADER` instructing the model to answer only from provided context.
3. **Shared AI context/formatting layer**
- New `lib/ai/context.ts` (`server-only`) — `formatAllGroupsForPrompt`, truncation with hard caps: `NOTE_CHAR_CAP=4,000`, `DETAILS_CHAR_CAP=300`, `TOTAL_CHAR_CAP=60,000`. Comment notes single‑user scale (no RAG; whole dataset goes into the prompt, capped by these limits).
- New `types/ai.ts` — `AiGroupContext` interface (group + scope label + category + archived flag + todos). **Deliberately includes archived groups** so historical questions are answerable.
- `lib/board.ts` (modified) — new `getAllGroupsForUser(userId)` using one Prisma query with `categoryAccessFilter`, flattening all categories/groups/todos (unlike `getBoard`, it does **not** filter archived groups).
## Key Technical Details
- Stack: Next.js, React, Tailwind, shadcn‑style UI (Dialog/Button), `MarkdownPreview`/`ChatMessageList`.
- `"use server"` server actions; `"server-only"` context module; Prisma ORM; `requireUserId()` auth; `categoryAccessFilter` access control.
- A shared `callChatCompletion` helper is referenced (handles provider errors, 401/403 API‑key rejection, empty/invalid JSON responses) — its full definition is not cleanly visible in the pasted diff.
- The pasted diff/file contents contain visible corruption (broken lines, garbled characters), but the feature intent is clearly discernible.
## User Request (deliverable)
Produce **only** a concise, descriptive git commit message (no file edits). The expected message should summarize: adding per‑group AI "Status Update" + a global cross‑board "Chat", along with shared AI context formatting (`lib/ai/context.ts`, `types/ai.ts`, `getAllGroupsForUser`) and new server actions (`global-chat.ts`, `group-status-ai.ts`). A representative phrasing would be something like: *"Add AI status updates per group and a global chat across all boards, backed by shared AI context formatting."*
## Current State / Next Steps
- No assistant response exists yet.
- Next step is to emit the commit message as plain text output (no code/file changes).
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