Merge boocode-ui-ember-coder-model: v2.7.8 Ember theme + brand banner + coder tabs + model-attribution chips

- Ember theme (Obsidian charcoal + #ff7a18 orange), now DEFAULT_THEME_ID; server theme_id whitelist gains 'ember'
- Brand banner: transparent Westie mascot + >_BooCode wordmark, big/edge-to-edge (flood-filled to transparency + cropped)
- Coder panes are multi-tab: + opens a BooCode tab, split opens a pane (shared ChatTabBar via tabKind + createCoderTab; closeOtherTabs/tab-numbering extended to coder)
- Model-attribution: new messages.model column stamped at finalizeCompletion (BooChat/native coder) + dispatcher assistant-row creation (external coder); surfaced via view + wire types + live frame; rendered as a subtle shortened-name chip (shortenModelName)
- Composer Web toggle moved into a boxed focus-ringed input; glowing accent dot on tool rows
- Claude SDK follow-ups (1M context, follow-up-message fix, collapsed thinking/tool chips) + CLAUDE_SDK_BACKEND=1

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes per release tag. Most recent on top, ordered by tag creation date (which matches the git history). Tag names follow `vMAJOR.MINOR.PATCH-slug` — the slug describes what shipped, so the tag name alone is enough to recall the batch.
 
+## v2.7.8-ember-coder-tabs-model-chips — 2026-06-01
+
+The BooCode 2.0 visual identity plus two workflow features. **Ember theme** (`styles/themes/ember.css`, now `DEFAULT_THEME_ID`) is the signature orange-on-near-black look — rebuilt on Obsidian's flat charcoal structure (`#0c0c0e`/`#15151a`/`#1f1f23`) with `#ff7a18` swapped in for the purple, after a Reinvented-direction detour (neon borders + a scanline/glow texture overlay) was dialed back to taste; the server `theme_id` whitelist gains `ember` so it can actually be selected. The **brand banner** (`ProjectSidebar`) shows the eye-patch Westie mascot + the `>_BooCode` wordmark big and edge-to-edge on transparent backgrounds — the source PNGs shipped with baked-white canvases, so they were flood-filled to transparency from the corners (preserving the white dog, which a naive white-key would have destroyed) and cropped to bounds. **Coder panes are now multi-tab**: `+` opens a new BooCode tab (a fresh chat = a new agent context sharing the session worktree) while the split button still opens a pane — coder panes reuse the shared `ChatTabBar` via a kind-aware `tabKind`, backed by a new `createCoderTab` action with `closeOtherTabs`/tab-numbering extended to coder kind. **Model-attribution chips**: a new `messages.model` column (both apps share the table) stamped at `finalizeCompletion` (BooChat + native coder) and at the dispatcher's assistant-row creation (external coder), surfaced through the `messages_with_parts` view + wire types + the live `message_complete` frame (the Zod already allowed `model`; nothing consumed it), and rendered as a subtle accent chip with a shortened label (`shortenModelName` → `Sonnet 4.6`, `Qwen3.6 35B`) beside the message stats — so swapping models mid-coder-session stays legible. Also the composer moved its Web toggle into a boxed, focus-ringed input, tool rows lead with a glowing accent dot, and the Claude-SDK-backend follow-ups validated live this session (1M context window, follow-up-message fix, collapsed thinking/tool chips) land with `CLAUDE_SDK_BACKEND=1` flipped on. One snag fixed mid-deploy: the view's new `m.model` was first inserted mid-list and `CREATE OR REPLACE VIEW` can't reorder columns (42P16) — appended at the end. Web tsc + server + coder builds green; deployed (docker + boocoder, tools:34). Builds on `v2.7.7-pane-header-actions`.
+
 ## v2.7.7-pane-header-actions — 2026-06-01
 
 In-flight workspace UX work, committed alongside the v2.7 review batches. Extracts a shared `PaneHeaderActions` cluster (the +/Split/Reopen-closed-pane/Session-history/Close controls) used across the `ChatTabBar` and the desktop coder + terminal pane headers in `Workspace`, replacing the divergent per-header copies, with `SessionLandingPage` history enhancements and `useWorkspacePanes` tweaks. Also fixes a coder-side correctness bug: `resolveChatId` (`apps/coder/src/routes/chat-resolve.ts`) still read `sessions.workspace_panes` as a bare `WorkspacePane[]`, but `v2.6.5-panes-tabs-composer` widened it to a `WorkspaceState` envelope — so it mis-read the panes and, worse, clobbered `tabNumbers`/`nextTabNumber`/`closedPaneStack` back to a bare array on every pane-chat write; a new `normalizeWorkspaceState` accepts either shape and preserves the envelope (with a regression test). Plus a CLAUDE.md doc-sync (apps/coder vitest suite, deploy-by-surface, dual-remote push, in-flight-web-WIP staging, release-branch naming). Web tsc + coder build + coder tests green. Builds on `v2.7.6-agent-status-normalize`.

apps/coder/.env.host

@@ -14,3 +14,4 @@ GITEA_SSH_HOST=100.114.205.53:2222
 MCP_CONFIG_PATH=/data/mcp.json
 SKILLS_ROOT=/opt/boocode/data/skills
 CODER_PROVIDERS_PATH=/opt/boocode/data/coder-providers.json
+CLAUDE_SDK_BACKEND=1

apps/coder/src/routes/messages.ts

@@ -53,6 +53,9 @@ interface MessageRow {
   role: string;
   content: string | null;
   status: string | null;
+  model: string | null;
+  ctx_used: number | null;
+  ctx_max: number | null;
   tool_calls: Array<{ id: string; name: string; args?: Record<string, unknown> }> | null;
   tool_results: {
     tool_call_id: string;
@@ -88,6 +91,9 @@ function mapCoderMessageRow(row: MessageRow) {
     role: row.role as 'user' | 'assistant' | 'system',
     content: row.content ?? '',
     status: (row.status ?? 'complete') as 'streaming' | 'complete' | 'failed',
+    ...(row.model ? { model: row.model } : {}),
+    ...(row.ctx_used != null ? { ctx_used: row.ctx_used } : {}),
+    ...(row.ctx_max != null ? { ctx_max: row.ctx_max } : {}),
     ...(reasoningText ? { reasoning_text: reasoningText } : {}),
     ...(tool_calls?.length ? { tool_calls } : {}),
   };
@@ -126,13 +132,13 @@ export function registerMessageRoutes(
 
       const rows = chatId
         ? await sql<MessageRow[]>`
-            SELECT id, role, content, status, tool_calls, tool_results, reasoning_parts
+            SELECT id, role, content, status, model, ctx_used, ctx_max, tool_calls, tool_results, reasoning_parts
             FROM messages_with_parts
             WHERE session_id = ${sessionId} AND chat_id = ${chatId}
             ORDER BY created_at ASC, id ASC
           `
         : await sql<MessageRow[]>`
-            SELECT id, role, content, status, tool_calls, tool_results, reasoning_parts
+            SELECT id, role, content, status, model, ctx_used, ctx_max, tool_calls, tool_results, reasoning_parts
             FROM messages_with_parts
             WHERE session_id = ${sessionId}
             ORDER BY created_at ASC, id ASC

apps/coder/src/services/agent-backend.ts

@@ -82,6 +82,12 @@ export interface PromptCtx {
 export interface TurnResult {
   ok: boolean;
   error?: string;
+  // Optional context-window telemetry (claude SDK): the model's reported window
+  // (ctxMax, 1M-aware) and the peak request input ≈ current fill (ctxUsed). The
+  // dispatcher writes these onto the assistant message so the ContextBar renders a
+  // real fill for the turn. Omitted by backends that don't report a window.
+  ctxUsed?: number;
+  ctxMax?: number;
 }
 
 /**

apps/coder/src/services/backends/claude-sdk.ts

@@ -165,6 +165,12 @@ export class ClaudeSdkBackend implements AgentBackend {
       // Stream partial assistant messages so text/thinking/tool deltas arrive live
       // (the mapper reads them; without this only terminal messages land).
       includePartialMessages: true,
+      // BooCode default: enable the documented 1M-context-window beta. Active on
+      // models that support it (the SDK lists Sonnet 4/4.5); a non-supporting model
+      // simply doesn't get the larger window. The TRUE window is read back from
+      // `result.modelUsage[*].contextWindow` and shown in the ContextBar, so whatever
+      // window a model actually gets is surfaced truthfully (no guessing).
+      betas: ['context-1m-2025-08-07'],
       ...(model ? { model } : {}),
       ...(resumeId ? { resume: resumeId } : {}),
       ...(this.installPath ? { pathToClaudeCodeExecutable: this.installPath } : {}),
@@ -192,6 +198,11 @@ export class ClaudeSdkBackend implements AgentBackend {
 
     this.busy = true;
     const state: ClaudeSdkMapState = createClaudeSdkMapState();
+    // Peak per-request input (incl. cache) across the turn ≈ the conversation context
+    // held in the window. result.usage SUMS input over the turn's internal requests
+    // (overcounts for multi-tool turns), so the per-request peak is the accurate
+    // "context used" for the ContextBar (paseo's approach).
+    let maxInputTokens = 0;
     // Per-turn abort: interrupt the in-flight query on the SAME generator (never
     // tear down the warm query — that's the pool's lifetime). The generator then
     // emits its terminal result and the drain loop exits.
@@ -214,7 +225,32 @@ export class ClaudeSdkBackend implements AgentBackend {
     queue.push(userMsg);
 
     try {
-      for await (const msg of gen) {
+      // Manual iteration — NOT `for await (… of gen)`. Returning out of a for-await
+      // loop calls gen.return(), which CLOSES the async generator; that killed the
+      // warm streaming-input query after a single turn, so every FOLLOW-UP message
+      // hit a dead generator and failed. gen.next() leaves the generator suspended
+      // (alive) for the next pushed user message — the warm query is only closed
+      // deliberately in teardownQuery()/dispose().
+      while (true) {
+        const next = await gen.next();
+        if (next.done) {
+          // Generator ended (e.g. disposed) without a result — non-fatal incomplete.
+          if (aborted) return { ok: false, error: 'aborted' };
+          return { ok: false, error: 'claude-sdk: query ended before result' };
+        }
+        const msg = next.value;
+        // Track the peak per-request input from message_start usage (delivered by
+        // includePartialMessages) — the largest single request's input is the real
+        // context fill, unlike the summed result.usage.
+        if (msg.type === 'stream_event') {
+          const sev = msg.event as { type?: string; message?: { usage?: Record<string, unknown> } };
+          if (sev?.type === 'message_start' && sev.message?.usage) {
+            const ru = sev.message.usage;
+            const reqInput =
+              num(ru.input_tokens) + num(ru.cache_read_input_tokens) + num(ru.cache_creation_input_tokens);
+            if (reqInput > maxInputTokens) maxInputTokens = reqInput;
+          }
+        }
         // Capture the provider session id from the init message (authoritative).
         if (msg.type === 'system' && msg.subtype === 'init' && msg.session_id) {
           if (this.agentSessionId !== msg.session_id) {
@@ -234,19 +270,28 @@ export class ClaudeSdkBackend implements AgentBackend {
             await this.markIdle();
           }
           if (aborted) return { ok: false, error: 'aborted' };
-          return ok
+          if (!ok) return { ok: false, error: resultErrorMessage(msg) };
-            ? { ok: true }
+          // Context-window telemetry for the ContextBar (paseo's method):
-            : { ok: false, error: resultErrorMessage(msg) };
+          //   ctxMax = the model's OWN reported window (1M-aware — reflects the active
+          //            window, so the bar shows the truth per model);
+          //   ctxUsed = peak request input (history in the window) + this turn's output.
+          const ctxMax = extractMaxContextWindow((msg as { modelUsage?: unknown }).modelUsage);
+          const fallbackInput =
+            num(msg.usage?.input_tokens) +
+            num(msg.usage?.cache_read_input_tokens) +
+            num(msg.usage?.cache_creation_input_tokens);
+          const ctxUsed = (maxInputTokens || fallbackInput) + num(msg.usage?.output_tokens);
+          return {
+            ok: true,
+            ...(ctxMax > 0 ? { ctxMax } : {}),
+            ...(ctxUsed > 0 ? { ctxUsed } : {}),
+          };
         }
         // Map renderable content → AgentEvents for the dispatcher's onEvent.
         for (const ev of mapSdkMessage(msg, state)) {
           ctx.onEvent(ev);
         }
       }
-      // Generator ended without a result message (e.g. it was disposed) — treat as
-      // a non-fatal incomplete turn so the dispatcher still finalizes the row.
-      if (aborted) return { ok: false, error: 'aborted' };
-      return { ok: false, error: 'claude-sdk: query ended before result' };
     } catch (err) {
       if (aborted) return { ok: false, error: 'aborted' };
       await this.markCrashed();
@@ -351,6 +396,22 @@ function numF(v: unknown): number {
   return Number.isFinite(x) && x > 0 ? x : 0;
 }
 
+/** Largest context-window the SDK reports across `result.modelUsage` (a
+ *  `Record<model, ModelUsage>`, each with a `contextWindow`). This is the model's
+ *  OWN window — 1M when the 1M model/beta is active, 200K otherwise — so the
+ *  ContextBar shows the true window without us mapping model→size ourselves. */
+function extractMaxContextWindow(modelUsage: unknown): number {
+  if (!modelUsage || typeof modelUsage !== 'object') return 0;
+  let max = 0;
+  for (const v of Object.values(modelUsage as Record<string, unknown>)) {
+    if (v && typeof v === 'object') {
+      const cw = (v as { contextWindow?: unknown }).contextWindow;
+      if (typeof cw === 'number' && Number.isFinite(cw) && cw > max) max = cw;
+    }
+  }
+  return max;
+}
+
 /** Build a human-readable error from an SDK error-result message. */
 function resultErrorMessage(result: Extract<SDKMessage, { type: 'result' }>): string {
   if (result.subtype === 'success') return 'ok';

apps/coder/src/services/dispatcher.ts

@@ -213,8 +213,8 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
         RETURNING id
       `;
       const [assistantMsg] = await sql<{ id: string }[]>`
-        INSERT INTO messages (session_id, chat_id, role, content, status, created_at)
+        INSERT INTO messages (session_id, chat_id, role, content, status, model, created_at)
-        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', clock_timestamp())
+        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', ${task.model}, clock_timestamp())
         RETURNING id
       `;
       const assistantId = assistantMsg!.id;
@@ -380,8 +380,8 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
       let acpReasoning = '';
 
       const [assistantMsg] = await sql<{ id: string }[]>`
-        INSERT INTO messages (session_id, chat_id, role, content, status, created_at)
+        INSERT INTO messages (session_id, chat_id, role, content, status, model, created_at)
-        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', clock_timestamp())
+        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', ${task.model}, clock_timestamp())
         RETURNING id
       `;
       const assistantId = assistantMsg!.id;
@@ -723,8 +723,8 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
       log.info({ taskId, worktreePath }, 'dispatcher: session worktree ready');
 
       const [assistantMsg] = await sql<{ id: string }[]>`
-        INSERT INTO messages (session_id, chat_id, role, content, status, created_at)
+        INSERT INTO messages (session_id, chat_id, role, content, status, model, created_at)
-        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', clock_timestamp())
+        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', ${task.model}, clock_timestamp())
         RETURNING id
       `;
       const assistantId = assistantMsg!.id;
@@ -1004,8 +1004,8 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
       log.info({ taskId, worktreePath }, 'dispatcher: session worktree ready (warm ACP)');
 
       const [assistantMsg] = await sql<{ id: string }[]>`
-        INSERT INTO messages (session_id, chat_id, role, content, status, created_at)
+        INSERT INTO messages (session_id, chat_id, role, content, status, model, created_at)
-        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', clock_timestamp())
+        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', ${task.model}, clock_timestamp())
         RETURNING id
       `;
       const assistantId = assistantMsg!.id;
@@ -1260,8 +1260,8 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
       log.info({ taskId, worktreePath }, 'dispatcher: session worktree ready (claude SDK)');
 
       const [assistantMsg] = await sql<{ id: string }[]>`
-        INSERT INTO messages (session_id, chat_id, role, content, status, created_at)
+        INSERT INTO messages (session_id, chat_id, role, content, status, model, created_at)
-        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', clock_timestamp())
+        VALUES (${sessionId}, ${chatId}, 'assistant', '', 'streaming', ${task.model}, clock_timestamp())
         RETURNING id
       `;
       const assistantId = assistantMsg!.id;
@@ -1373,9 +1373,12 @@ export function createDispatcher(deps: Deps): { start(): void; stop(): Promise<v
 
       await persistExternalAgentTurn(sql, assistantId, [...toolSnaps.values()], reasoningText);
 
+      // ctx_used/ctx_max from the SDK result (1M-aware) → the assistant message, so
+      // the ContextBar renders a real context-window fill for claude.
       await sql`
         UPDATE messages
-        SET content = ${assistantContent}, status = 'complete', finished_at = clock_timestamp()
+        SET content = ${assistantContent}, status = 'complete', finished_at = clock_timestamp(),
+            ctx_used = ${result.ctxUsed ?? null}, ctx_max = ${result.ctxMax ?? null}
         WHERE id = ${assistantId}
       `;
       broker.publishFrame(sessionId, {

apps/server/src/routes/chats.ts

@@ -441,7 +441,7 @@ export function registerChatRoutes(
       const rows = await sql<Message[]>`
         SELECT id, session_id, chat_id, role, content, kind, tool_calls, tool_results, status, last_seq,
                tokens_used, ctx_used, ctx_max, started_at, finished_at, created_at, metadata,
-               summary, tail_start_id, compacted_at
+               summary, tail_start_id, compacted_at, model
         FROM messages_with_parts
         WHERE chat_id = ${req.params.id}
         ORDER BY created_at ASC, id ASC

apps/server/src/routes/messages.ts

@@ -118,7 +118,7 @@ export function registerMessageRoutes(
       const rows = await sql<Message[]>`
         SELECT id, session_id, chat_id, role, content, kind, tool_calls, tool_results, status, last_seq,
                tokens_used, ctx_used, ctx_max, started_at, finished_at, created_at, metadata,
-               summary, tail_start_id, compacted_at
+               summary, tail_start_id, compacted_at, model
         FROM messages_with_parts
         WHERE session_id = ${req.params.id}
         ORDER BY created_at ASC, id ASC

apps/server/src/routes/settings.ts

@@ -22,8 +22,9 @@ export async function setSetting(
   `;
 }
 
-// themes-v1: whitelist of the 18 preset theme ids. Kept in sync with
+// themes-v1: whitelist of the preset theme ids. Kept in sync with
 // docs/themes_v1.md §1 and apps/web/src/lib/theme.ts THEMES.
+// (+ 'ember' — the BooCode 2.0 signature, now the default.)
 const THEME_IDS = [
   'obsidian',
   'gunmetal',
@@ -43,6 +44,7 @@ const THEME_IDS = [
   'chalk',
   'cobalt',
   'midnight-sapphire',
+  'ember',
 ] as const;
 
 const THEME_MODES = ['dark', 'light', 'system'] as const;

apps/server/src/routes/ws.ts

@@ -27,7 +27,7 @@ export function registerWebSocket(
       const messages = await sql<Message[]>`
         SELECT id, session_id, chat_id, role, content, kind, tool_calls, tool_results, status, last_seq,
                tokens_used, ctx_used, ctx_max, started_at, finished_at, created_at, metadata,
-               summary, tail_start_id, compacted_at
+               summary, tail_start_id, compacted_at, model
         FROM messages_with_parts
         WHERE session_id = ${sessionId}
         ORDER BY created_at ASC, id ASC

apps/server/src/schema.sql

@@ -107,6 +107,11 @@ END $$;
 -- a single jsonb object {tool_call_id, output, truncated, error?}.
 -- reasoning_parts is consumed by the inference history fetch (payload.ts)
 -- for v1.13.1-C reasoning round-tripping. Not surfaced in external APIs.
+-- model-attribution: which model produced an assistant message (NULL for
+-- user/system rows and pre-existing messages). Stamped at finalize (BooChat /
+-- native coder) and at assistant-row creation (external coder dispatcher).
+ALTER TABLE messages ADD COLUMN IF NOT EXISTS model TEXT;
+
 CREATE OR REPLACE VIEW messages_with_parts AS
 SELECT
   m.id, m.session_id, m.chat_id, m.role, m.content, m.kind, m.status,
@@ -122,7 +127,10 @@ SELECT
     ORDER BY p.sequence LIMIT 1) AS tool_results,
   (SELECT jsonb_agg(p.payload ORDER BY p.sequence)
      FROM message_parts p
-    WHERE p.message_id = m.id AND p.kind = 'reasoning' AND p.hidden_at IS NULL) AS reasoning_parts
+    WHERE p.message_id = m.id AND p.kind = 'reasoning' AND p.hidden_at IS NULL) AS reasoning_parts,
+  -- NEW columns MUST be appended at the end: CREATE OR REPLACE VIEW can't
+  -- reorder/rename existing columns (42P16). m.model added last.
+  m.model
 FROM messages m;
 
 -- v1.13.20: drop legacy tool_calls/tool_results columns. Reads have routed

apps/server/src/services/inference/error-handler.ts

@@ -119,6 +119,7 @@ export async function finalizeCompletion(
         tokens_used = ${completionTokens},
         ctx_used = ${promptTokens},
         ctx_max = ${nCtx},
+        model = ${session.model},
         finished_at = clock_timestamp()
     WHERE id = ${assistantMessageId}
     RETURNING tokens_used, ctx_used, ctx_max, finished_at

apps/web/src/api/types.ts

@@ -201,6 +201,9 @@ export interface Message {
   tokens_used: number | null;
   ctx_used: number | null;
   ctx_max: number | null;
+  // model-attribution: which model produced this assistant message (null for
+  // user/system rows + pre-attribution messages). Rendered as a chip.
+  model: string | null;
   started_at: string | null;
   finished_at: string | null;
   created_at: string;
@@ -351,7 +354,13 @@ export interface CoderMessageWire {
   role: 'user' | 'assistant' | 'system';
   content: string;
   status?: 'streaming' | 'complete' | 'failed';
+  // model-attribution: which model produced this coder assistant message.
+  model?: string | null;
   reasoning_text?: string;
+  // Context-window fill for the ContextBar (claude SDK turns set these from the
+  // SDK's reported window; other agents omit them). Read via the Message cast.
+  ctx_used?: number | null;
+  ctx_max?: number | null;
   tool_calls?: Array<{
     id: string;
     function: { name: string; arguments: string };
@@ -571,6 +580,8 @@ export type WsFrame =
       ctx_max?: number | null;
       started_at?: string | null;
       finished_at?: string | null;
+      // model-attribution: the model that produced this assistant message.
+      model?: string | null;
       // v1.8.2: piggybacks the persisted metadata onto the terminal frame so
       // cap-hit sentinels (and any future stamped-on-complete metadata) flow
       // to the client without a refetch.

apps/web/src/components/ChatInput.tsx

@@ -1,14 +1,8 @@
 import { useCallback, useEffect, useMemo, useRef, useState, type DragEvent, type KeyboardEvent } from 'react';
-import { Check, ListPlus, Plus, Send, Square } from 'lucide-react';
+import { Globe, ListPlus, Send, Square } from 'lucide-react';
 import { toast } from 'sonner';
 import { Textarea } from '@/components/ui/textarea';
 import { Button } from '@/components/ui/button';
-import {
-  DropdownMenu,
-  DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuTrigger,
-} from '@/components/ui/dropdown-menu';
 import {
   flattenToMessage,
   inferLanguage,
@@ -598,39 +592,9 @@ export function ChatInput({ disabled, projectId, agentId, onAgentChange, session
               onChange={onAgentChange}
             />
           )}
-          {sessionId && (
+          {/* BooCode 2.0: the web-search toggle moved out of this top toolbar
-            <DropdownMenu>
+              into the composer box's bottom controls row (the Web pill below),
-              <DropdownMenuTrigger asChild>
+              leaving the top row as just the agent picker + context bar. */}
-                <button
-                  type="button"
-                  aria-label="Quick toggles"
-                  title="Quick toggles"
-                  className="inline-flex items-center justify-center size-6 rounded text-muted-foreground hover:bg-muted hover:text-foreground"
-                >
-                  <Plus className="size-3.5" />
-                </button>
-              </DropdownMenuTrigger>
-              <DropdownMenuContent align="start">
-                <DropdownMenuItem
-                  onSelect={async () => {
-                    // v1.9: tri-state collapses to two on the wire when toggled
-                    // here. null (inherit) treated as off; click flips to true.
-                    // To restore "inherit" the user opens SettingsPane.
-                    const next = webSearchEnabled === true ? false : true;
-                    try {
-                      await api.sessions.update(sessionId, { web_search_enabled: next });
-                    } catch (err) {
-                      toast.error(err instanceof Error ? err.message : 'failed to toggle web search');
-                    }
-                  }}
-                  className="text-xs"
-                >
-                  <Check className={`size-3 ${webSearchEnabled === true ? 'opacity-100' : 'opacity-0'}`} />
-                  Enable web search and fetch
-                </DropdownMenuItem>
-              </DropdownMenuContent>
-            </DropdownMenu>
-          )}
           {/* v1.11.5.1: ContextBar fills the remaining horizontal space.
               `flex-1 min-w-0` is set inside the component. Mounts only when
               the caller passes `messages` so older call sites (without the
@@ -640,54 +604,86 @@ export function ChatInput({ disabled, projectId, agentId, onAgentChange, session
           )}
         </div>
       )}
-      <div className="px-4 py-3 flex items-end gap-2">
+      {/* BooCode 2.0 composer: textarea + a bottom controls row live INSIDE one
-        <Textarea
+          bordered, focus-ringed message box (Refreshed direction). */}
-          ref={textareaRef}
+      <div className="px-4 py-3">
-          value={value}
+        <div className="rounded-xl border bg-card transition-colors focus-within:border-primary/50 focus-within:ring-2 focus-within:ring-primary/15">
-          onChange={handleChange}
+          <Textarea
-          onKeyDown={onKeyDown}
+            ref={textareaRef}
-          onPaste={onPaste}
+            value={value}
-          placeholder={
+            onChange={handleChange}
-            isMobile
+            onKeyDown={onKeyDown}
-              ? 'Ask about this project. Tap send to submit.'
+            onPaste={onPaste}
-              : 'Ask about this project. Enter to send · Shift+Enter for newline.'
+            placeholder={
-          }
+              isMobile
-          disabled={disabled || busy}
+                ? 'Ask about this project. Tap send to submit.'
-          rows={3}
+                : 'Ask about this project. Enter to send · Shift+Enter for newline.'
-          className="resize-none min-h-[68px] max-h-[240px]"
+            }
-        />
+            disabled={disabled || busy}
-        {(() => {
+            rows={3}
-          const hasContent = value.trim().length > 0 || attachments.length > 0;
+            className="resize-none min-h-[56px] max-h-[240px] border-0 bg-transparent px-3 pt-2.5 shadow-none focus-visible:ring-0 dark:bg-transparent"
-          // While generating with an empty draft, the button stops generation.
+          />
-          if (generating && onStop && !hasContent) {
+          {/* bottom controls row: Web toggle on the left, Send/Stop on the right */}
-            return (
+          <div className="flex items-center gap-1.5 px-2 pb-2 pt-0.5">
-              <Button
+            {sessionId && (
-                onClick={() => void onStop()}
+              <button
-                size="icon-lg"
+                type="button"
-                variant="outline"
+                onClick={async () => {
-                aria-label="Stop generating"
+                  // v1.9 tri-state collapses to two on toggle; null (inherit) → on.
-                title="Stop generating"
+                  const next = webSearchEnabled === true ? false : true;
+                  try {
+                    await api.sessions.update(sessionId, { web_search_enabled: next });
+                  } catch (err) {
+                    toast.error(err instanceof Error ? err.message : 'failed to toggle web search');
+                  }
+                }}
+                aria-pressed={webSearchEnabled === true}
+                title="Web search & fetch"
+                className={`inline-flex items-center gap-1.5 rounded-full border px-2.5 py-1 text-xs transition-colors max-md:min-h-[36px] ${
+                  webSearchEnabled === true
+                    ? 'border-primary/40 bg-primary/10 text-primary'
+                    : 'border-border text-muted-foreground hover:bg-muted hover:text-foreground'
+                }`}
               >
-                <Square className="fill-current size-3.5" />
+                <Globe className="size-3.5" />
-              </Button>
+                Web
-            );
+              </button>
-          }
+            )}
-          // With a draft, submit. While generating the caller queues it, so the
+            <div className="flex-1" />
-          // button reads as Queue; otherwise it's a normal Send.
+            {(() => {
-          const queueing = !!generating && hasContent;
+              const hasContent = value.trim().length > 0 || attachments.length > 0;
-          return (
+              // While generating with an empty draft, the button stops generation.
-            <Button
+              if (generating && onStop && !hasContent) {
-              onClick={() => void submit()}
+                return (
-              disabled={disabled || busy || !hasContent}
+                  <Button
-              size="icon-lg"
+                    onClick={() => void onStop()}
-              variant={queueing ? 'secondary' : 'default'}
+                    size="icon"
-              aria-label={queueing ? 'Queue message' : 'Send'}
+                    variant="outline"
-              title={queueing ? 'Queue message' : 'Send'}
+                    aria-label="Stop generating"
-            >
+                    title="Stop generating"
-              {queueing ? <ListPlus /> : <Send />}
+                  >
-            </Button>
+                    <Square className="fill-current size-3.5" />
-          );
+                  </Button>
-        })()}
+                );
+              }
+              // With a draft, submit. While generating the caller queues it, so the
+              // button reads as Queue; otherwise it's a normal Send.
+              const queueing = !!generating && hasContent;
+              return (
+                <Button
+                  onClick={() => void submit()}
+                  disabled={disabled || busy || !hasContent}
+                  size="icon"
+                  variant={queueing ? 'secondary' : 'default'}
+                  aria-label={queueing ? 'Queue message' : 'Send'}
+                  title={queueing ? 'Queue message' : 'Send'}
+                >
+                  {queueing ? <ListPlus /> : <Send />}
+                </Button>
+              );
+            })()}
+          </div>
+        </div>
       </div>
       </div>
       <AttachmentPreviewModal

apps/web/src/components/ChatTabBar.tsx

@@ -1,5 +1,5 @@
 import { useState } from 'react';
-import { History, MessageSquare, X } from 'lucide-react';
+import { Code, History, MessageSquare, X } from 'lucide-react';
 import type { Chat, WorkspacePane } from '@/api/types';
 import { StatusDot } from '@/components/StatusDot';
 import { PaneHeaderActions } from '@/components/PaneHeaderActions';
@@ -17,6 +17,9 @@ import { cn } from '@/lib/utils';
 interface Props {
   pane: WorkspacePane;
   tabs: Chat[];
+  // Host pane kind — 'coder' shows the Code glyph + routes the "+" to a new
+  // BooCode tab. Defaults to 'chat' (the BooChat tab bar).
+  tabKind?: 'chat' | 'coder';
   // v2.6.x (Batch 3a): stable session-scoped tab number per chat id. Keyed by
   // chat.id, NEVER by tab position.
   tabNumbers: Record<string, number>;
@@ -36,6 +39,7 @@ interface Props {
 export function ChatTabBar({
   pane,
   tabs,
+  tabKind = 'chat',
   tabNumbers,
   onSwitchTab,
   onRemoveTab,
@@ -51,6 +55,8 @@ export function ChatTabBar({
 }: Props) {
   const [renamingId, setRenamingId] = useState<string | null>(null);
   const [renameValue, setRenameValue] = useState('');
+  const TabIcon = tabKind === 'coder' ? Code : MessageSquare;
+  const newLabel = tabKind === 'coder' ? 'New BooCode' : 'New chat';
 
   // Long-press: dispatch a synthetic contextmenu event on the tab so the
   // existing Radix ContextMenuTrigger opens at the touch coordinates. Works
@@ -104,7 +110,7 @@ export function ChatTabBar({
                     : 'bg-muted/30 text-muted-foreground hover:bg-muted/60'
                 )}
               >
-                <MessageSquare size={12} className="shrink-0" />
+                <TabIcon size={12} className="shrink-0" />
                 <StatusDot chatId={chat.id} />
                 {renamingId === chat.id ? (
                   <input
@@ -142,7 +148,7 @@ export function ChatTabBar({
             </ContextMenuTrigger>
             <ContextMenuContent>
               <ContextMenuItem onSelect={onNewTab}>
-                New chat
+                {newLabel}
               </ContextMenuItem>
               <ContextMenuItem
                 onSelect={() =>
@@ -189,6 +195,7 @@ export function ChatTabBar({
       <PaneHeaderActions
         className="ml-auto px-1"
         onNewTab={onNewTab}
+        tabKind={tabKind}
         onSplitPane={onSplitPane}
         onReopenPane={onReopenPane}
         onShowHistory={onShowHistory}

apps/web/src/components/ContextBar.tsx

@@ -19,18 +19,24 @@ interface Props {
 // the same boundaries the server's auto-compaction triggers.
 const COMPACTION_BUFFER = 20_000;
 
-// Walk newest-first; first message with both ctx_used and ctx_max non-null
+// Take the latest ctx_used and the latest ctx_max INDEPENDENTLY (newest-first).
-// AND ctx_max > 0 wins. Older messages may have ctx_used but missing ctx_max
+// They needn't be on the same message: ctx_max is the model's context window — a
-// (early v1 before llama-swap's n_ctx capture worked) — skip them and keep
+// constant per model — while some agents report it only intermittently (the claude
-// walking. Returns null when no usable pair exists in the chat.
+// SDK populates modelUsage.contextWindow on some turns, not all) yet report
+// ctx_used every turn. Pairing the latest of each gives a correct used/max even
+// when the most recent turn omitted the window. Native BooChat sets both on the
+// same assistant message, so this is identical there. Returns null until BOTH a
+// used and a positive max have been seen at least once.
 function latestPair(messages: Message[]): { used: number; max: number } | null {
+  let used: number | null = null;
+  let max: number | null = null;
   for (let i = messages.length - 1; i >= 0; i--) {
     const m = messages[i]!;
-    if (m.ctx_used == null || m.ctx_max == null) continue;
+    if (used === null && m.ctx_used != null) used = m.ctx_used;
-    if (m.ctx_max <= 0) continue;
+    if (max === null && m.ctx_max != null && m.ctx_max > 0) max = m.ctx_max;
-    return { used: m.ctx_used, max: m.ctx_max };
+    if (used !== null && max !== null) break;
   }
-  return null;
+  return used !== null && max !== null ? { used, max } : null;
 }
 
 interface ColorTier {

apps/web/src/components/MessageBubble.tsx

@@ -6,6 +6,7 @@ import type { Chat, ErrorReason, Message } from '@/api/types';
 import { api } from '@/api/client';
 import { sessionEvents } from '@/hooks/sessionEvents';
 import { sendToTerminal, terminalsRegistry, type TerminalRegistration } from '@/lib/events';
+import { shortenModelName } from '@/lib/modelName';
 import { CapHitSentinel } from './CapHitSentinel';
 import { DoomLoopSentinel } from './DoomLoopSentinel';
 import { MarkdownRenderer } from './MarkdownRenderer';
@@ -608,12 +609,12 @@ function SummaryCard({ message }: { message: Message }) {
 
 // Collapsible "Thinking" block for assistant reasoning. Fed by either
 // reasoning_text (coder wire / live reasoning_delta stream) or reasoning_parts
-// (native inference, persisted from message_parts). Auto-expands while the turn
+// (native inference, persisted from message_parts). Starts COLLAPSED to start
-// is still streaming so the user watches it think (Paseo-style), then stays
+// (a quiet chip) — for native BooChat/BooCode and the external agents (opencode,
-// where the user left it once the turn completes — initial state is captured
+// claude SDK) alike — so the transcript stays tidy; click to expand. The
-// once at mount, so we never fight a manual collapse on later re-renders.
+// `streaming` pulse still animates while the turn runs.
 function ReasoningBlock({ text, streaming }: { text: string; streaming: boolean }) {
-  const [expanded, setExpanded] = useState(() => streaming);
+  const [expanded, setExpanded] = useState(false);
   return (
     <div className="max-w-[90%] rounded-lg border bg-muted/30 text-sm">
       <button
@@ -768,7 +769,7 @@ export function MessageBubble({
     return (
       <div className="group flex flex-col items-end gap-1">
         <SendToTerminalMenu>
-          <div className="max-w-[80%] rounded-lg bg-primary text-primary-foreground px-3 py-2 text-sm whitespace-pre-wrap break-words min-w-0">
+          <div className="boo-user-bubble max-w-[80%] rounded-lg bg-primary text-primary-foreground px-3 py-2 text-sm whitespace-pre-wrap break-words min-w-0">
             {message.content}
           </div>
         </SendToTerminalMenu>
@@ -782,6 +783,8 @@ export function MessageBubble({
   // v1.13.7: match the MessageList.flatten trim guard so a whitespace-only
   // assistant turn doesn't render an empty bubble + dangling ActionRow.
   const hasContent = message.content.trim().length > 0;
+  // model-attribution chip: short label for the model that produced this turn.
+  const modelLabel = shortenModelName(message.model);
   // Reasoning arrives as a pre-joined string (coder wire) or as parts (native
   // inference). Read whichever is present; loose ?? chain tolerates the coder
   // shape where reasoning_parts is undefined (see CLAUDE.md null-guard note).
@@ -823,6 +826,14 @@ export function MessageBubble({
           )}
         </div>
       )}
+      {!isStreaming && (modelLabel || null) && (
+        <span
+          className="inline-flex w-fit items-center rounded-full border border-primary/25 bg-primary/10 px-2 py-0.5 text-[10px] font-mono text-primary/90"
+          title={message.model ?? undefined}
+        >
+          {modelLabel}
+        </span>
+      )}
       {!isStreaming && <StatsLine message={message} />}
       {!isStreaming && hasContent && (
         <ActionRow

apps/web/src/components/PaneHeaderActions.tsx

@@ -12,10 +12,14 @@ import { cn } from '@/lib/utils';
 // desktop coder + terminal pane headers (Workspace) so all pane kinds share one
 // control set. Extracted to avoid a divergent copy per header.
 interface Props {
-  // When provided (chat panes), the "+" menu's New BooChat opens an in-pane
+  // When provided, the "+" menu item matching `tabKind` opens an in-pane tab
-  // tab. When omitted (coder/terminal panes, which can't host tabs), New BooChat
+  // (e.g. chat panes: New BooChat → tab; coder panes: New BooCode → tab). Every
-  // splits into a new pane instead.
+  // OTHER kind splits into a new pane. When onNewTab is omitted (terminal
+  // panes, which can't host tabs) all three items split.
   onNewTab?: () => void;
+  // The host pane's own kind — the "+" item of this kind becomes "new tab".
+  // Defaults to 'chat' for back-compat with the chat tab bar.
+  tabKind?: 'chat' | 'terminal' | 'coder';
   onSplitPane: (kind: 'chat' | 'terminal' | 'coder') => void;
   onReopenPane?: () => void;
   onShowHistory: () => void;
@@ -31,6 +35,7 @@ const BTN =
 
 export function PaneHeaderActions({
   onNewTab,
+  tabKind = 'chat',
   onSplitPane,
   onReopenPane,
   onShowHistory,
@@ -38,6 +43,10 @@ export function PaneHeaderActions({
   historyActive,
   className,
 }: Props) {
+  // The "+" item of the host pane's own kind adds a tab; every other kind
+  // splits into a new pane. Falls back to split when onNewTab is absent.
+  const newOrSplit = (kind: 'chat' | 'terminal' | 'coder') =>
+    onNewTab && tabKind === kind ? onNewTab : () => onSplitPane(kind);
   return (
     <div className={cn('flex items-center gap-0.5 shrink-0', className)}>
       <DropdownMenu>
@@ -53,15 +62,15 @@ export function PaneHeaderActions({
           </button>
         </DropdownMenuTrigger>
         <DropdownMenuContent align="end" className="w-fit">
-          {/* Chat panes: New BooChat opens a tab in THIS pane. Coder/terminal
+          {/* The item matching the host pane's kind opens an in-pane tab; the
-              panes can't host tabs, so it splits into a new pane. */}
+              others split into a new pane. (tabKind defaults to 'chat'.) */}
-          <DropdownMenuItem onSelect={onNewTab ?? (() => onSplitPane('chat'))}>
+          <DropdownMenuItem onSelect={newOrSplit('chat')}>
             <MessageSquare size={14} /> New BooChat
           </DropdownMenuItem>
-          <DropdownMenuItem onSelect={() => onSplitPane('terminal')}>
+          <DropdownMenuItem onSelect={newOrSplit('terminal')}>
             <Terminal size={14} /> New BooTerm
           </DropdownMenuItem>
-          <DropdownMenuItem onSelect={() => onSplitPane('coder')}>
+          <DropdownMenuItem onSelect={newOrSplit('coder')}>
             <Code size={14} /> New BooCode
           </DropdownMenuItem>
         </DropdownMenuContent>

apps/web/src/components/ProjectSidebar.tsx

@@ -3,6 +3,8 @@ import { NavLink, useLocation, useNavigate } from 'react-router-dom';
 import { ChevronRight, ExternalLink, Folder, MessageSquare, Plus, Settings as SettingsIcon, X, Code } from 'lucide-react';
 import { toast } from 'sonner';
 import { Button } from '@/components/ui/button';
+import mascot from '@/assets/brand/banner-mascot.png';
+import wordmark from '@/assets/brand/banner-wordmark.png';
 import { sessionEvents } from '@/hooks/sessionEvents';
 import {
   ContextMenu,
@@ -307,9 +309,22 @@ export function ProjectSidebar() {
 
   return (
     <aside className={asideCls}>
-      <div className="px-4 py-3 border-b flex items-center justify-between">
+      <div className="px-2 py-1 border-b flex items-center justify-between gap-1">
-        <NavLink to="/" className="font-semibold tracking-tight text-base">
+        {/* BooCode brand banner: mascot badge + >_BooCode wordmark, big and
-          BooCode
+            visible, on transparent backgrounds (no chip, no blend). */}
+        <NavLink to="/" aria-label="BooCode home" className="flex items-center gap-0.5 min-w-0 flex-1">
+          <img
+            src={mascot}
+            alt=""
+            draggable={false}
+            className="h-12 w-auto select-none shrink-0"
+          />
+          <img
+            src={wordmark}
+            alt="BooCode"
+            draggable={false}
+            className="h-12 w-auto select-none min-w-0 flex-1 object-contain object-left"
+          />
         </NavLink>
         <div className="flex items-center gap-1">
           <Button size="icon-sm" variant="ghost" onClick={() => setAddOpen(true)} aria-label="Add project">

apps/web/src/components/ToolCallLine.tsx

@@ -149,8 +149,13 @@ export function ToolCallLine({ run, insideGroup }: Props) {
         onClick={() => setOpen((v) => !v)}
         className="flex items-center gap-1.5 w-full text-left hover:bg-muted/40 rounded px-1 py-0.5 -mx-1"
       >
+        {/* BooCode 2.0: glowing activity indicator (was ↳ / >_) */}
         {!insideGroup && (
-          <span className="text-muted-foreground/60 select-none shrink-0">↳</span>
+          <span
+            className="size-1.5 rounded-full bg-primary shrink-0"
+            style={{ boxShadow: '0 0 6px var(--primary)' }}
+            aria-hidden
+          />
         )}
         <ChevronRight
           className={`size-3 text-muted-foreground/60 shrink-0 transition-transform ${open ? 'rotate-90' : ''}`}

apps/web/src/components/Workspace.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useMemo, useState } from 'react';
-import { Terminal, Code, Clipboard } from 'lucide-react';
+import { Terminal, Clipboard } from 'lucide-react';
 import { api } from '@/api/client';
 import type { Chat, Project, Session, WorkspacePane } from '@/api/types';
 import { MAX_PANES, activePaneChatId, type UseWorkspacePanesResult } from '@/hooks/useWorkspacePanes';
@@ -60,6 +60,7 @@ export function Workspace({
     closeAllTabs,
     showLandingPage,
     addSplitPane,
+    createCoderTab,
     removePane,
     reopenPane,
     hasClosedPanes,
@@ -214,18 +215,27 @@ export function Workspace({
                   onRemovePane={panes.length > 1 ? () => removePane(idx) : undefined}
                 />
               )}
+              {/* Coder panes host BooCode tabs (one chat = one agent context,
+                  all sharing the session worktree). "+" adds a tab; the split
+                  button adds a pane. Same tab strip as chat panes (tabKind). */}
               {isCoder && !isMobile && (
-                <div className="flex items-center gap-1 border-b border-border px-2 py-1 shrink-0">
+                <ChatTabBar
-                  <Code size={12} className="text-muted-foreground" />
+                  pane={pane}
-                  <span className="text-xs text-muted-foreground">BooCode</span>
+                  tabs={chatsForPane(pane)}
-                  <PaneHeaderActions
+                  tabKind="coder"
-                    className="ml-auto"
+                  tabNumbers={tabNumbers}
-                    onSplitPane={onAddPane}
+                  onSwitchTab={(tabIdx) => switchTab(idx, tabIdx)}
-                    onReopenPane={hasClosedPanes ? reopenPane : undefined}
+                  onRemoveTab={(chatId) => removeTab(idx, chatId)}
-                    onShowHistory={() => showLandingPage(idx)}
+                  onCloseOthers={(chatId) => closeOtherTabs(idx, chatId)}
-                    onRemovePane={panes.length > 1 ? () => removePane(idx) : undefined}
+                  onCloseToRight={(chatId) => closeTabsToRight(idx, chatId)}
-                  />
+                  onCloseAll={() => closeAllTabs(idx)}
-                </div>
+                  onNewTab={() => void createCoderTab(idx)}
+                  onSplitPane={(kind) => onAddPane(kind)}
+                  onReopenPane={hasClosedPanes ? reopenPane : undefined}
+                  onShowHistory={() => showLandingPage(idx)}
+                  onRename={renameChat}
+                  onRemovePane={panes.length > 1 ? () => removePane(idx) : undefined}
+                />
               )}
               {isTerminal && (
                 <div className="flex items-center gap-2 border-b border-border bg-muted/30 px-2 py-1 shrink-0">

apps/web/src/hooks/useSessionStream.ts

@@ -40,6 +40,7 @@ function applyFrame(state: State, frame: WsFrame): State {
         tokens_used: null,
         ctx_used: null,
         ctx_max: null,
+        model: null,
         started_at: null,
         finished_at: null,
         created_at: new Date().toISOString(),
@@ -105,6 +106,7 @@ function applyFrame(state: State, frame: WsFrame): State {
         tokens_used: null,
         ctx_used: null,
         ctx_max: null,
+        model: null,
         started_at: null,
         finished_at: null,
         created_at: new Date().toISOString(),
@@ -123,6 +125,7 @@ function applyFrame(state: State, frame: WsFrame): State {
               ...(frame.ctx_max !== undefined ? { ctx_max: frame.ctx_max } : {}),
               ...(frame.started_at !== undefined ? { started_at: frame.started_at } : {}),
               ...(frame.finished_at !== undefined ? { finished_at: frame.finished_at } : {}),
+              ...(frame.model !== undefined ? { model: frame.model } : {}),
               // v1.8.2: cap-hit sentinels (and future stamped metadata) ride
               // in on this terminal frame so the reducer can attach it
               // without waiting for a refetch.

apps/web/src/hooks/useWorkspacePanes.ts

@@ -188,6 +188,8 @@ export interface UseWorkspacePanesResult {
   // id to update mobile URL state so the URL-sync effect doesn't fight the
   // freshly-set activePaneIdx.
   addSplitPane: (kind: 'chat' | 'terminal' | 'coder') => string | null;
+  /** Append a new BooCode tab to an existing coder pane (the coder "+"). */
+  createCoderTab: (paneIdx: number) => Promise<void>;
   // Open-on-first-click, close-on-second-click. Singleton — settings panes
   // don't count toward MAX_PANES. Closing the only remaining pane (edge case)
   // falls back to an empty pane to preserve the "always one pane" invariant.
@@ -265,6 +267,42 @@ export function useWorkspacePanes(sessionId: string): UseWorkspacePanesResult {
     [sessionId, attachChatToPane, markPaneChatPending],
   );
 
+  // Add a new BooCode tab to an existing coder pane (the "+" in the coder pane
+  // header). Creates a fresh chat row (= a new agent context that shares the
+  // session worktree) and APPENDS it to the pane's chatIds, keeping the pane
+  // kind 'coder' and focusing the new tab. Mirrors createChat for chat panes;
+  // the per-pane "split into a new pane" action stays addSplitPane.
+  const createCoderTab = useCallback(
+    async (paneIdx: number) => {
+      const paneId = panes[paneIdx]?.id;
+      if (!paneId) return;
+      markPaneChatPending(paneId, true);
+      try {
+        const chat = await api.chats.create(sessionId, { name: chatNameForPaneKind('coder') });
+        setPanes((prev) => {
+          const idx = prev.findIndex((p) => p.id === paneId);
+          if (idx < 0) return prev;
+          const pane = prev[idx]!;
+          const newIds = [...pane.chatIds, chat.id];
+          const next = [...prev];
+          next[idx] = {
+            ...pane,
+            kind: 'coder',
+            chatId: chat.id,
+            chatIds: newIds,
+            activeChatIdx: newIds.length - 1,
+          };
+          return next;
+        });
+      } catch (err) {
+        toast.error(err instanceof Error ? err.message : 'Failed to create coder tab');
+      } finally {
+        markPaneChatPending(paneId, false);
+      }
+    },
+    [sessionId, panes, markPaneChatPending],
+  );
+
   const seedEmptyScopedPanes = useCallback(
     (paneList: WorkspacePane[]) => {
       for (const pane of paneList) {
@@ -426,16 +464,16 @@ export function useWorkspacePanes(sessionId: string): UseWorkspacePanesResult {
   }, [sessionId, panes, tabNumbers, nextTabNumber, closedPaneStack]);
 
   // v2.6.x (Batch 3a): maintain stable, session-scoped tab numbers. Collect the
-  // chat ids that appear in CHAT-kind panes in deterministic order (pane index,
+  // chat ids that appear in CHAT- or CODER-kind panes in deterministic order
-  // then tab index). Assign numbers to any without one (global per session,
+  // (pane index, then tab index). Assign numbers to any without one (global per
-  // only ever increasing, never reused) and prune entries whose chat is no
+  // session, only ever increasing, never reused) and prune entries whose chat
-  // longer in any chat-kind pane. Guarded against render loops: only setState
+  // is no longer in any tab-hosting pane. Guarded against render loops: only
-  // when something actually changed.
+  // setState when something actually changed.
   useEffect(() => {
     const liveChatIds: string[] = [];
     const liveSet = new Set<string>();
     for (const pane of panes) {
-      if (pane.kind !== 'chat') continue;
+      if (pane.kind !== 'chat' && pane.kind !== 'coder') continue;
       for (const id of pane.chatIds) {
         if (!liveSet.has(id)) {
           liveSet.add(id);
@@ -597,9 +635,9 @@ export function useWorkspacePanes(sessionId: string): UseWorkspacePanesResult {
       const pane = next[paneIdx]!;
       const keepIdx = pane.chatIds.indexOf(keepChatId);
       if (keepIdx < 0) return prev;
+      // Preserve pane.kind (...pane) — a coder pane stays a coder pane.
       next[paneIdx] = {
         ...pane,
-        kind: 'chat',
         chatId: keepChatId,
         chatIds: [keepChatId],
         activeChatIdx: 0,
@@ -954,6 +992,7 @@ export function useWorkspacePanes(sessionId: string): UseWorkspacePanesResult {
     closeAllTabs,
     showLandingPage,
     addSplitPane,
+    createCoderTab,
     toggleSettingsPane,
     removePane,
     reopenPane,

apps/web/src/lib/modelName.ts

@@ -0,0 +1,32 @@
+// model-attribution: turn a raw model id into a short, friendly label for the
+// per-message model chip (e.g. "claude-sonnet-4-6" → "Sonnet 4.6",
+// "qwen3.6-35b-a3b-mxfp4" → "Qwen3.6 35B"). Strips provider prefixes and maps
+// the common families; falls back to the cleaned id so unknown models still
+// read. Returns null for empty/absent input so the caller can skip the chip.
+export function shortenModelName(model: string | null | undefined): string | null {
+  if (!model) return null;
+  let m = model.trim();
+  if (!m) return null;
+
+  // opencode / provider-prefixed ids: "llama-swap/qwen…", "anthropic/claude…".
+  const slash = m.lastIndexOf('/');
+  if (slash >= 0) m = m.slice(slash + 1);
+
+  // claude-{opus,sonnet,haiku}-X-Y[-date] → "Opus X.Y".
+  const claude = /^claude-(opus|sonnet|haiku)-(\d+)-(\d+)/i.exec(m);
+  if (claude) {
+    const tier = claude[1]!.charAt(0).toUpperCase() + claude[1]!.slice(1).toLowerCase();
+    return `${tier} ${claude[2]}.${claude[3]}`;
+  }
+
+  // qwen3.6-35b-a3b-… → "Qwen3.6 35B".
+  const qwen = /^qwen([\d.]+)-(\d+)b/i.exec(m);
+  if (qwen) return `Qwen${qwen[1]} ${qwen[2]}B`;
+
+  // gpt-4o, gpt-5-… → "GPT-4o" / "GPT-5".
+  const gpt = /^gpt-([\w.-]+)/i.exec(m);
+  if (gpt) return `GPT-${gpt[1]}`;
+
+  // Fallback: keep the id readable, cap the length for the chip.
+  return m.length > 26 ? `${m.slice(0, 25)}…` : m;
+}

apps/web/src/lib/theme.ts

@@ -24,7 +24,8 @@ export type ThemeId =
   | 'ivory'
   | 'chalk'
   | 'cobalt'
-  | 'midnight-sapphire';
+  | 'midnight-sapphire'
+  | 'ember';
 
 export type ThemeMode = 'dark' | 'light' | 'system';
 
@@ -74,9 +75,13 @@ export const THEMES: readonly ThemeMeta[] = [
     anchors: ['#020817', '#061434', '#0c2244', '#3060a0', '#0047ab'] },
   { id: 'midnight-sapphire', name: 'Midnight Sapphire', family: 'Blue', supportsDark: true, supportsLight: true,
     anchors: ['#02050e', '#060c1f', '#0e1a36', '#4a6088', '#1e3a8a'] },
+  { id: 'ember', name: 'BooCode Ember', family: 'Amber', supportsDark: true, supportsLight: true,
+    anchors: ['#0c0c0e', '#15151a', '#1f1f23', '#6b6b75', '#ff7a18'] },
 ] as const;
 
-export const DEFAULT_THEME_ID: ThemeId = 'obsidian';
+// BooCode 2.0: orange-on-black "BooCode Ember" is the out-of-the-box signature
+// (was 'obsidian' / purple). Also the dark fallback for the light-only themes.
+export const DEFAULT_THEME_ID: ThemeId = 'ember';
 export const DEFAULT_THEME_MODE: ThemeMode = 'dark';
 export const STORAGE_KEY = 'boocode.theme';
 

apps/web/src/styles/globals.css

@@ -25,6 +25,7 @@
 @import "./themes/chalk.css";
 @import "./themes/cobalt.css";
 @import "./themes/midnight-sapphire.css";
+@import "./themes/ember.css";
 
 @custom-variant dark (&:is(.dark *));
 

apps/web/src/styles/themes/ember.css

@@ -0,0 +1,76 @@
+/* BooCode Ember (family: Amber) — the signature brand theme. Mirrors the
+   Obsidian theme's flat charcoal structure (same neutrals, flat hairline
+   borders), with ember orange (--accent #ff7a18) swapped in for Obsidian's
+   purple. Dark anchors: #0c0c0e #15151a #1f1f23 #6b6b75 #ff7a18. */
+.theme-ember {
+  --background: #fafafa;
+  --foreground: #18181b;
+  --card: #f4f4f5;
+  --card-foreground: #18181b;
+  --popover: #f4f4f5;
+  --popover-foreground: #18181b;
+  --primary: #e25f00;
+  --primary-foreground: #ffffff;
+  --secondary: #e4e4e7;
+  --secondary-foreground: #18181b;
+  --muted: #e4e4e7;
+  --muted-foreground: #71717a;
+  --accent: #e25f00;
+  --accent-foreground: #ffffff;
+  --destructive: #b91c1c;
+  --destructive-foreground: #ffffff;
+  --border: #e4e4e7;
+  --input: #e4e4e7;
+  --ring: #e25f00;
+  --sidebar: #f4f4f5;
+  --sidebar-foreground: #18181b;
+  --sidebar-primary: #e25f00;
+  --sidebar-primary-foreground: #ffffff;
+  --sidebar-accent: #e4e4e7;
+  --sidebar-accent-foreground: #18181b;
+  --sidebar-border: #e4e4e7;
+  --sidebar-ring: #e25f00;
+}
+.theme-ember.dark {
+  --background: #0c0c0e;
+  --foreground: #ece9f0;
+  --card: #15151a;
+  --card-foreground: #ece9f0;
+  --popover: #15151a;
+  --popover-foreground: #ece9f0;
+  --primary: #ff7a18;
+  --primary-foreground: #120a04;
+  --secondary: #1f1f23;
+  --secondary-foreground: #ece9f0;
+  --muted: #1f1f23;
+  --muted-foreground: #6b6b75;
+  --accent: #ff7a18;
+  --accent-foreground: #120a04;
+  --destructive: #dc2626;
+  --destructive-foreground: #ffffff;
+  --border: #1f1f23;
+  --input: #1f1f23;
+  --ring: #ff7a18;
+  --sidebar: #15151a;
+  --sidebar-foreground: #ece9f0;
+  --sidebar-primary: #ff7a18;
+  --sidebar-primary-foreground: #120a04;
+  /* Softened selected/hover surface — a faint accent tint, NOT the solid bright
+     accent Obsidian uses (per your earlier "selected button shouldn't be solid
+     orange"). Set --sidebar-accent: #ff7a18 + foreground #120a04 for parity. */
+  --sidebar-accent: color-mix(in oklab, #ff7a18 16%, transparent);
+  --sidebar-accent-foreground: #ece9f0;
+  --sidebar-border: #1f1f23;
+  --sidebar-ring: #ff7a18;
+}
+
+/* User message bubble: a dark surface card with a 2px accent right-edge — not
+   the solid-orange fill (per your earlier preference). Remove this block to get
+   the Obsidian-style solid-accent bubble. */
+.theme-ember.dark .boo-user-bubble {
+  background: var(--popover);
+  color: var(--foreground);
+  border: 1px solid var(--border);
+  border-right: 2px solid var(--primary);
+  border-radius: 6px;
+}

apps/web/src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />