Standard chat-app pattern: while the AI is streaming or running
tools, the Send button morphs into a Stop control (filled square
inside a faded spinner). Click it (or press Esc) to abort the turn.
Why: with MAX_TOOL_ROUNDS=18, a confused tool-loop can chew through
60-90s of compute and tokens. The user had no way to interrupt — they
just watched ✓ icons accumulate. Stop fixes that.
How:
Client (chat-panel.tsx):
- abortRef holds the in-flight AbortController; lives in a ref so the
Stop button can reach it without re-rendering on every chunk.
- sendMessage creates a fresh controller and passes signal to fetch.
- cancelMessage calls .abort(); also bound to Escape while sending.
- Button morph: while `sending`, render lucide Square overlaid on a
faded Loader2 spin, switch onClick to cancelMessage, swap aria/title
to "Stop generating (Esc)".
- Catch DOMException AbortError separately from network errors and
append "(stopped by user)" to the partial assistant message.
- Textarea no longer disabled during streaming so users can queue
the next prompt; Enter still won't submit until the turn ends.
Server (app/api/chat/route.ts):
- request.signal is captured before the ReadableStream and an `aborted`
flag is flipped on the addEventListener('abort', ...) callback.
- Loop checkpoints `aborted` (a) at the top of every round, (b) before
the inner tool-call loop, (c) before each individual executeMcpTool
call. Picks the next safe boundary instead of yanking mid-call.
- On abort: emit a "(stopped by user)" text chunk + an "aborted" event,
skip the round-cap recovery summary (don't pay for tokens the user
just canceled), persist the partial assistant message normally.
- Fetch errors that come from the abort propagating into Gemini's HTTP
client are recognized and downgraded from "error" to "aborted".
- safeClose() guards against double controller.close() when the abort
races with normal completion.
Made-with: Cursor
Two bugs, one symptom (every reload silently spawned a blank thread,
the previous conversation was orphaned in the sidebar):
1. Race in the auto-thread effect.
On mount: threads = [], activeThread = null, /api/chat/threads
fetch in flight. The auto-create effect re-ran the moment the
workspace + auth resolved, saw threads.length === 0, and called
newThread() before the fetch ever returned. When the historical
threads finally landed, activeThread was already pinned to the new
empty one.
Gate on a `threadsLoaded` flag that flips true after the first
loadThreads() resolves. Auto-create can no longer fire before
history is known.
2. activeThread wasn't persisted.
Even with the race fixed, refreshing the page would reset the
sidebar to the top thread (most recently updated). After a deploy
that's usually the brand-new empty thread we just spawned, not the
conversation the user was actually in.
Persist activeThread to localStorage keyed by workspace. Reload
restores the same thread; switching workspaces resets cleanly.
Made-with: Cursor
URL param 'mark-account' != workspace slug 'mark'. Fetch default token
from /api/workspaces?include_default_token=true which resolves the real
slug server-side.
Made-with: Cursor
- ensureWorkspaceForUser() now calls mintWorkspaceApiKey('default') on first workspace creation
- Legacy workspaces without a default key get one minted on first request
- GET /api/workspaces/[slug]/keys/default reveals (or mints) the default token for session users
- Chat panel fetches the token automatically on mount, caches it in localStorage
- No manual setup needed — tool calling works immediately on first sign-in
Made-with: Cursor
- Right-docked chat panel on all workspace pages ([workspace]/layout.tsx)
- Streaming SSE responses with Gemini 3.1 Pro preview via generativelanguage API
- Full tool-calling loop (up to 6 rounds): deploys apps, lists projects, registers
domains, fetches logs — all via existing MCP dispatcher
- Persistent conversation history: fs_chat_threads + fs_chat_messages tables (Postgres)
- Thread management: create, list, rename (auto-title from first message), delete
- Panel collapses to a tab; open state persisted to localStorage
- Read-only mode hint when no MCP token is present
- Graceful content margin shift when panel is open
Made-with: Cursor
