chore: snapshot current state before cleanup

app.py

@@ -5,6 +5,7 @@ import json
 import os
 import re
 import shutil
+import subprocess
 import sys
 from datetime import datetime, timezone
 from pathlib import Path
@@ -35,6 +36,8 @@ NANOBOT_SCRIPT_WORKSPACE = Path(
 CARDS_ROOT = NANOBOT_WORKSPACE / "cards"
 CARD_INSTANCES_DIR = CARDS_ROOT / "instances"
 CARD_TEMPLATES_DIR = CARDS_ROOT / "templates"
+CARD_SOURCES_DIR = CARDS_ROOT / "sources"
+CARD_SOURCE_STATE_DIR = CARDS_ROOT / "source-state"
 TEMPLATES_CONTEXT_PATH = NANOBOT_WORKSPACE / "CARD_TEMPLATES.md"
 MAX_TEMPLATES_IN_PROMPT = 12
 MAX_TEMPLATE_HTML_CHARS = 4000
@@ -46,6 +49,8 @@ _MAX_SCRIPT_PROXY_ARGS = 16
 _MAX_SCRIPT_PROXY_STDERR_CHARS = 2000
 CARD_INSTANCES_DIR.mkdir(parents=True, exist_ok=True)
 CARD_TEMPLATES_DIR.mkdir(parents=True, exist_ok=True)
+CARD_SOURCES_DIR.mkdir(parents=True, exist_ok=True)
+CARD_SOURCE_STATE_DIR.mkdir(parents=True, exist_ok=True)
 
 app = FastAPI(title="Nanobot SuperTonic Wisper Web")
 
@@ -525,6 +530,155 @@ def _normalize_home_assistant_proxy_path(target_path: str) -> str:
     return f"/api{normalized}"
 
 
+
+def _run_workspace_script(script_file: Path, args: list[str], *, timeout_seconds: float) -> tuple[int, str, str]:
+    process = subprocess.run(
+        [sys.executable, str(script_file), *args],
+        cwd=str(script_file.parent),
+        capture_output=True,
+        text=True,
+        timeout=timeout_seconds,
+    )
+    return process.returncode, process.stdout.strip(), process.stderr.strip()
+
+
+def _card_source_state_path(source_id: str) -> Path:
+    return CARD_SOURCE_STATE_DIR / f"{source_id}.json"
+
+
+def _load_card_source_configs() -> list[dict[str, Any]]:
+    rows: list[dict[str, Any]] = []
+    for path in sorted(CARD_SOURCES_DIR.glob('*.json')):
+        try:
+            raw = json.loads(path.read_text(encoding='utf-8'))
+        except Exception:
+            continue
+        if not isinstance(raw, dict):
+            continue
+        source_id = _normalize_card_id(str(raw.get('id') or path.stem))
+        if not source_id or raw.get('enabled', True) is False:
+            continue
+        script = str(raw.get('script', '')).strip()
+        if not script:
+            continue
+        raw_args = raw.get('args', [])
+        if not isinstance(raw_args, list):
+            raw_args = []
+        try:
+            min_interval_ms = max(0, int(raw.get('min_interval_ms', 10000)))
+        except (TypeError, ValueError):
+            min_interval_ms = 10000
+        try:
+            timeout_seconds = max(1, min(300, int(raw.get('timeout_seconds', 60))))
+        except (TypeError, ValueError):
+            timeout_seconds = 60
+        rows.append({
+            'id': source_id,
+            'script': script,
+            'args': [str(arg) for arg in raw_args][: _MAX_SCRIPT_PROXY_ARGS],
+            'min_interval_ms': min_interval_ms,
+            'timeout_seconds': timeout_seconds,
+        })
+    return rows
+
+
+def _load_card_source_state(source_id: str) -> dict[str, Any]:
+    path = _card_source_state_path(source_id)
+    try:
+        payload = json.loads(path.read_text(encoding='utf-8'))
+        return payload if isinstance(payload, dict) else {}
+    except Exception:
+        return {}
+
+
+def _save_card_source_state(source_id: str, payload: dict[str, Any]) -> None:
+    _card_source_state_path(source_id).write_text(
+        json.dumps(payload, indent=2, ensure_ascii=False) + '\n',
+        encoding='utf-8',
+    )
+
+
+def _sync_card_sources(*, force: bool = False, source_id: str | None = None) -> list[dict[str, Any]]:
+    now = datetime.now(timezone.utc)
+    results: list[dict[str, Any]] = []
+    for config in _load_card_source_configs():
+        current_id = str(config.get('id', ''))
+        if source_id and current_id != source_id:
+            continue
+        state = _load_card_source_state(current_id)
+        last_completed_raw = str(state.get('last_completed_at', '') or '')
+        should_run = force
+        if not should_run:
+            if not last_completed_raw:
+                should_run = True
+            else:
+                try:
+                    last_completed = datetime.fromisoformat(last_completed_raw)
+                    elapsed_ms = (now - last_completed).total_seconds() * 1000
+                    should_run = elapsed_ms >= int(config.get('min_interval_ms', 10000))
+                except ValueError:
+                    should_run = True
+        if not should_run:
+            results.append({'id': current_id, 'status': 'skipped'})
+            continue
+
+        try:
+            script_file = _resolve_workspace_script(str(config.get('script', '')))
+            returncode, stdout_text, stderr_text = _run_workspace_script(
+                script_file,
+                list(config.get('args', [])),
+                timeout_seconds=float(config.get('timeout_seconds', 60)),
+            )
+            runtime = {
+                'id': current_id,
+                'last_started_at': now.isoformat(),
+                'last_completed_at': datetime.now(timezone.utc).isoformat(),
+                'last_return_code': returncode,
+                'script': str(config.get('script', '')),
+                'args': list(config.get('args', [])),
+            }
+            if returncode != 0:
+                runtime['last_error'] = stderr_text[:_MAX_SCRIPT_PROXY_STDERR_CHARS]
+                _save_card_source_state(current_id, runtime)
+                results.append({'id': current_id, 'status': 'error', 'error': runtime['last_error']})
+                continue
+            parsed_stdout: Any = None
+            if stdout_text:
+                try:
+                    parsed_stdout = json.loads(stdout_text)
+                except json.JSONDecodeError:
+                    parsed_stdout = stdout_text
+            runtime['last_result'] = parsed_stdout
+            runtime.pop('last_error', None)
+            _save_card_source_state(current_id, runtime)
+            results.append({'id': current_id, 'status': 'synced', 'result': parsed_stdout})
+        except subprocess.TimeoutExpired:
+            runtime = {
+                'id': current_id,
+                'last_started_at': now.isoformat(),
+                'last_completed_at': datetime.now(timezone.utc).isoformat(),
+                'last_return_code': -1,
+                'last_error': 'card source timed out',
+                'script': str(config.get('script', '')),
+                'args': list(config.get('args', [])),
+            }
+            _save_card_source_state(current_id, runtime)
+            results.append({'id': current_id, 'status': 'error', 'error': 'card source timed out'})
+        except Exception as exc:
+            runtime = {
+                'id': current_id,
+                'last_started_at': now.isoformat(),
+                'last_completed_at': datetime.now(timezone.utc).isoformat(),
+                'last_return_code': -1,
+                'last_error': str(exc),
+                'script': str(config.get('script', '')),
+                'args': list(config.get('args', [])),
+            }
+            _save_card_source_state(current_id, runtime)
+            results.append({'id': current_id, 'status': 'error', 'error': str(exc)})
+    return results
+
+
 def _resolve_workspace_script(script_path: str) -> Path:
     normalized = script_path.strip().lstrip("/")
     if not normalized:
@@ -631,33 +785,26 @@ async def workspace_script_proxy(script_path: str, request: Request) -> JSONResp
         return JSONResponse({"error": str(exc)}, status_code=400)
 
     try:
-        process = await asyncio.create_subprocess_exec(
+        returncode, stdout_text, stderr_text = await asyncio.to_thread(
-            sys.executable,
+            _run_workspace_script,
-            str(script_file),
+            script_file,
-            *args,
+            args,
-            cwd=str(script_file.parent),
+            timeout_seconds=60.0,
-            stdout=asyncio.subprocess.PIPE,
-            stderr=asyncio.subprocess.PIPE,
         )
-        stdout, stderr = await asyncio.wait_for(process.communicate(), timeout=60.0)
+    except subprocess.TimeoutExpired:
-    except asyncio.TimeoutError:
-        with contextlib.suppress(ProcessLookupError):
-            process.kill()
         return JSONResponse({"error": "script execution timed out"}, status_code=504)
     except OSError as exc:
         return JSONResponse({"error": f"failed to start script: {exc}"}, status_code=502)
 
-    stderr_text = stderr.decode("utf-8", errors="replace").strip()
+    if returncode != 0:
-    if process.returncode != 0:
         return JSONResponse(
             {
-                "error": f"script exited with code {process.returncode}",
+                "error": f"script exited with code {returncode}",
                 "stderr": stderr_text[:_MAX_SCRIPT_PROXY_STDERR_CHARS],
             },
             status_code=502,
         )
 
-    stdout_text = stdout.decode("utf-8", errors="replace").strip()
     try:
         payload = json.loads(stdout_text)
     except json.JSONDecodeError as exc:
@@ -674,9 +821,26 @@ async def workspace_script_proxy(script_path: str, request: Request) -> JSONResp
 
 @app.get("/cards")
 async def get_cards() -> JSONResponse:
+    _sync_card_sources()
     return JSONResponse(_load_cards())
 
 
+@app.post("/cards/sync")
+async def sync_cards_endpoint(request: Request) -> JSONResponse:
+    try:
+        payload = await request.json()
+    except Exception:
+        payload = {}
+    if not isinstance(payload, dict):
+        payload = {}
+    raw_source_id = str(payload.get('source_id', '')).strip()
+    source_id = _normalize_card_id(raw_source_id) if raw_source_id else ''
+    if raw_source_id and not source_id:
+        return JSONResponse({'error': 'invalid source id'}, status_code=400)
+    results = _sync_card_sources(force=True, source_id=source_id or None)
+    return JSONResponse({'status': 'ok', 'results': results})
+
+
 @app.delete("/cards/{card_id}")
 async def delete_card(card_id: str) -> JSONResponse:
     if not _normalize_card_id(card_id):
@@ -761,7 +925,10 @@ async def post_message(request: Request) -> JSONResponse:
         return JSONResponse({"error": "empty message"}, status_code=400)
     if not isinstance(metadata, dict):
         metadata = {}
+    try:
         await gateway.send_user_message(text, metadata=metadata)
+    except RuntimeError as exc:
+        return JSONResponse({"error": str(exc)}, status_code=503)
     return JSONResponse({"status": "ok"})
 
 

frontend/bun.lock

@@ -5,6 +5,7 @@
     "": {
       "name": "nanobot-ui",
       "dependencies": {
+        "@fontsource/iosevka": "^5.2.5",
         "marked": "^12.0.0",
         "preact": "^10.22.0",
         "three": "^0.165.0",
@@ -132,6 +133,8 @@
 
     "@esbuild/win32-x64": ["@esbuild/win32-x64@0.21.5", "", { "os": "win32", "cpu": "x64" }, "sha512-tQd/1efJuzPC6rCFwEvLtci/xNFcTZknmXs98FYDfGE4wP9ClFV98nyKrzJKVPMhdDnjzLhdUyMX4PsQAPjwIw=="],
 
+    "@fontsource/iosevka": ["@fontsource/iosevka@5.2.5", "", {}, "sha512-Zv/UHJodDug1LcnWv2u2+GPp3oWP3U6Xp16cJOsqqZQNsCu8sA/ttT331N0NypxBZ+7c8szlSRlYDcy9liZ8pw=="],
+
     "@jridgewell/gen-mapping": ["@jridgewell/gen-mapping@0.3.13", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.0", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA=="],
 
     "@jridgewell/remapping": ["@jridgewell/remapping@2.3.5", "", { "dependencies": { "@jridgewell/gen-mapping": "^0.3.5", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-LI9u/+laYG4Ds1TDKSJW2YPrIlcVYOwi2fUC6xB43lueCjgxV4lffOCZCtYFiH6TNOX+tQKXx97T4IKHbhyHEQ=="],

frontend/dist/index.html

@@ -4,8 +4,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
     <title>Nanobot</title>
-    <script type="module" crossorigin src="/assets/index-D7b7A0h0.js"></script>
+    <script type="module" crossorigin src="/assets/index-CAK37B_S.js"></script>
-    <link rel="stylesheet" crossorigin href="/assets/index-IlzmBIpb.css">
+    <link rel="stylesheet" crossorigin href="/assets/index-Dz_SN8B6.css">
   </head>
   <body>
     <div id="app"></div>

frontend/package.json

@@ -12,6 +12,7 @@
     "check": "biome check ./src"
   },
   "dependencies": {
+    "@fontsource/iosevka": "^5.2.5",
     "marked": "^12.0.0",
     "preact": "^10.22.0",
     "three": "^0.165.0"

frontend/src/App.tsx

@@ -6,10 +6,11 @@ import { LogPanel } from "./components/LogPanel";
 import { useAudioMeter } from "./hooks/useAudioMeter";
 import { usePTT } from "./hooks/usePTT";
 import { useWebRTC } from "./hooks/useWebRTC";
-import type { CardItem, CardMessageMetadata, JsonValue } from "./types";
+import type { CardItem, CardMessageMetadata, CardSelectionRange, JsonValue } from "./types";
 
 const SWIPE_THRESHOLD_PX = 64;
 const SWIPE_DIRECTION_RATIO = 1.15;
+const CARD_SELECTION_EVENT = "nanobot:card-selection-change";
 
 interface AppRtcActions {
   connect(): Promise<void>;
@@ -25,6 +26,36 @@ interface AppRtcActions {
   connecting: boolean;
 }
 
+function toNullableNumber(value: JsonValue | undefined): number | null {
+  return typeof value === "number" && Number.isFinite(value) ? value : null;
+}
+
+function readCardSelection(cardId: string | null | undefined): CardSelectionRange | null {
+  const raw = window.__nanobotGetCardSelection?.(cardId);
+  if (!raw || typeof raw !== "object" || Array.isArray(raw)) return null;
+  const record = raw as Record<string, JsonValue>;
+  if (record.kind !== "git_diff_range") return null;
+  if (typeof record.file_label !== "string" || typeof record.range_label !== "string") return null;
+
+  const filePath = typeof record.file_path === "string" ? record.file_path : record.file_label;
+  const label =
+    typeof record.label === "string"
+      ? record.label
+      : `${record.file_label} · ${record.range_label}`;
+
+  return {
+    kind: "git_diff_range",
+    file_path: filePath,
+    file_label: record.file_label,
+    range_label: record.range_label,
+    label,
+    old_start: toNullableNumber(record.old_start),
+    old_end: toNullableNumber(record.old_end),
+    new_start: toNullableNumber(record.new_start),
+    new_end: toNullableNumber(record.new_end),
+  };
+}
+
 function buildCardMetadata(card: CardItem): CardMessageMetadata {
   const metadata: CardMessageMetadata = {
     card_id: card.serverId,
@@ -35,6 +66,11 @@ function buildCardMetadata(card: CardItem): CardMessageMetadata {
     card_context_summary: card.contextSummary,
     card_response_value: card.responseValue,
   };
+  const selection = card.serverId ? readCardSelection(card.serverId) : null;
+  if (selection) {
+    metadata.card_selection = selection as unknown as JsonValue;
+    metadata.card_selection_label = selection.label;
+  }
   const liveContent = card.serverId
     ? window.__nanobotGetCardLiveContent?.(card.serverId)
     : undefined;
@@ -42,12 +78,27 @@ function buildCardMetadata(card: CardItem): CardMessageMetadata {
   return metadata;
 }
 
-function AgentCardContext({ card, onClear }: { card: CardItem; onClear(): void }) {
+function AgentCardContext({
+  card,
+  selection,
+  onClear,
+}: {
+  card: CardItem;
+  selection: CardSelectionRange | null;
+  onClear(): void;
+}) {
+  const label = selection ? "Using diff context" : "Using card";
+  const title = selection?.file_label || card.title;
+  const meta = selection?.range_label || "";
+
   return (
     <div id="agent-card-context" data-no-swipe="1">
-      <div class="agent-card-context-label">Using card</div>
+      <div class="agent-card-context-label">{label}</div>
       <div class="agent-card-context-row">
-        <div class="agent-card-context-title">{card.title}</div>
+        <div class="agent-card-context-main">
+          <div class="agent-card-context-title">{title}</div>
+          {meta && <div class="agent-card-context-meta">{meta}</div>}
+        </div>
         <button
           class="agent-card-context-clear"
           type="button"
@@ -146,6 +197,7 @@ export function App() {
   const [view, setView] = useState<"agent" | "feed">("agent");
   const [composing, setComposing] = useState(false);
   const [selectedCardId, setSelectedCardId] = useState<string | null>(null);
+  const [selectionVersion, setSelectionVersion] = useState(0);
   const autoOpenedFeedRef = useRef(false);
 
   const selectedCard = useMemo(
@@ -153,9 +205,13 @@ export function App() {
       selectedCardId ? (rtc.cards.find((card) => card.serverId === selectedCardId) ?? null) : null,
     [rtc.cards, selectedCardId],
   );
+  const selectedCardSelection = useMemo(
+    () => (selectedCardId ? readCardSelection(selectedCardId) : null),
+    [selectedCardId, selectionVersion],
+  );
   const selectedCardMetadata = useCallback(
     () => (selectedCard ? buildCardMetadata(selectedCard) : undefined),
-    [selectedCard],
+    [selectedCard, selectionVersion],
   );
 
   const { agentStateOverride, handlePointerDown, handlePointerMove, handlePointerUp } = usePTT({
@@ -202,9 +258,29 @@ export function App() {
     setSelectedCardId(null);
   }, [rtc.cards, selectedCardId]);
 
+  useEffect(() => {
+    const handleSelectionChange = (event: Event) => {
+      const detail = (event as CustomEvent<{ cardId?: string; selection?: JsonValue | null }>)
+        .detail;
+      setSelectionVersion((current) => current + 1);
+      const cardId = typeof detail?.cardId === "string" ? detail.cardId : "";
+      if (cardId && detail?.selection) setSelectedCardId(cardId);
+    };
+
+    window.addEventListener(CARD_SELECTION_EVENT, handleSelectionChange as EventListener);
+    return () => {
+      window.removeEventListener(CARD_SELECTION_EVENT, handleSelectionChange as EventListener);
+    };
+  }, []);
+
   const { handleToggleTextOnly } = useControlActions(rtc);
   const { handleAskCard } = useCardActions(setView, setSelectedCardId);
 
+  const clearSelectedCardContext = useCallback(() => {
+    if (selectedCardId) window.__nanobotClearCardSelection?.(selectedCardId);
+    setSelectedCardId(null);
+  }, [selectedCardId]);
+
   const handleCardChoice = useCallback(
     (cardId: string, value: string) => {
       rtc.sendJson({ type: "card-response", card_id: cardId, value });
@@ -220,10 +296,11 @@ export function App() {
   const handleResetWithSelection = useCallback(async () => {
     const confirmed = window.confirm("Clear the current conversation context and start fresh?");
     if (!confirmed) return;
+    if (selectedCardId) window.__nanobotClearCardSelection?.(selectedCardId);
     setSelectedCardId(null);
     await rtc.connect();
     rtc.sendJson({ type: "command", command: "reset" });
-  }, [rtc]);
+  }, [rtc, selectedCardId]);
 
   return (
     <>
@@ -238,7 +315,11 @@ export function App() {
               />
             )}
             {view === "agent" && selectedCard && (
-              <AgentCardContext card={selectedCard} onClear={() => setSelectedCardId(null)} />
+              <AgentCardContext
+                card={selectedCard}
+                selection={selectedCardSelection}
+                onClear={clearSelectedCardContext}
+              />
             )}
             {view === "agent" && (
               <LogPanel

frontend/src/components/CardFeed.tsx

@@ -8,7 +8,19 @@ const EXECUTABLE_SCRIPT_TYPES = new Set([
   "application/javascript",
   "module",
 ]);
+const CARD_SELECTION_EVENT = "nanobot:card-selection-change";
 const cardLiveContentStore = new Map<string, JsonValue>();
+const cardRefreshHandlers = new Map<string, () => void>();
+const cardSelectionStore = new Map<string, JsonValue>();
+
+function cloneJsonValue<T extends JsonValue>(value: T | null | undefined): T | undefined {
+  if (value === null || value === undefined) return undefined;
+  try {
+    return JSON.parse(JSON.stringify(value)) as T;
+  } catch {
+    return undefined;
+  }
+}
 
 function readCardState(script: HTMLScriptElement | null): Record<string, unknown> {
   const root = script?.closest("[data-nanobot-card-root]");
@@ -38,27 +50,79 @@ function setCardLiveContent(
   const root = resolveCardRoot(target);
   const cardId = root?.dataset.cardId?.trim();
   if (!cardId) return;
-  if (snapshot === null || snapshot === undefined) {
+  const cloned = cloneJsonValue(snapshot ?? undefined);
+  if (cloned === undefined) {
     cardLiveContentStore.delete(cardId);
     return;
   }
-  try {
+  cardLiveContentStore.set(cardId, cloned);
-    cardLiveContentStore.set(cardId, JSON.parse(JSON.stringify(snapshot)) as JsonValue);
-  } catch {
-    cardLiveContentStore.delete(cardId);
-  }
 }
 
 function getCardLiveContent(cardId: string | null | undefined): JsonValue | undefined {
   const key = (cardId || "").trim();
   if (!key) return undefined;
-  const value = cardLiveContentStore.get(key);
+  return cloneJsonValue(cardLiveContentStore.get(key));
-  if (value === undefined) return undefined;
-  try {
-    return JSON.parse(JSON.stringify(value)) as JsonValue;
-  } catch {
-    return undefined;
 }
+
+function setCardRefreshHandler(
+  target: HTMLScriptElement | HTMLElement | null,
+  handler: (() => void) | null | undefined,
+): void {
+  const root = resolveCardRoot(target);
+  const cardId = root?.dataset.cardId?.trim();
+  if (!cardId) return;
+  if (typeof handler !== "function") {
+    cardRefreshHandlers.delete(cardId);
+    return;
+  }
+  cardRefreshHandlers.set(cardId, handler);
+}
+
+function runCardRefresh(cardId: string | null | undefined): boolean {
+  const key = (cardId || "").trim();
+  if (!key) return false;
+  const handler = cardRefreshHandlers.get(key);
+  if (!handler) return false;
+  handler();
+  return true;
+}
+
+function dispatchCardSelectionChange(cardId: string, selection: JsonValue | undefined): void {
+  window.dispatchEvent(
+    new CustomEvent(CARD_SELECTION_EVENT, {
+      detail: { cardId, selection: selection ?? null },
+    }),
+  );
+}
+
+function setCardSelection(
+  target: HTMLScriptElement | HTMLElement | null,
+  selection: JsonValue | null | undefined,
+): void {
+  const root = resolveCardRoot(target);
+  const cardId = root?.dataset.cardId?.trim();
+  if (!cardId) return;
+  const cloned = cloneJsonValue(selection ?? undefined);
+  if (cloned === undefined) {
+    cardSelectionStore.delete(cardId);
+    dispatchCardSelectionChange(cardId, undefined);
+    return;
+  }
+  cardSelectionStore.set(cardId, cloned);
+  dispatchCardSelectionChange(cardId, cloned);
+}
+
+function getCardSelection(cardId: string | null | undefined): JsonValue | undefined {
+  const key = (cardId || "").trim();
+  if (!key) return undefined;
+  return cloneJsonValue(cardSelectionStore.get(key));
+}
+
+function clearCardSelection(cardId: string | null | undefined): void {
+  const key = (cardId || "").trim();
+  if (!key) return;
+  cardSelectionStore.delete(key);
+  dispatchCardSelectionChange(key, undefined);
 }
 
 function ensureCardStateHelper(): void {
@@ -71,6 +135,21 @@ function ensureCardStateHelper(): void {
   if (!window.__nanobotGetCardLiveContent) {
     window.__nanobotGetCardLiveContent = getCardLiveContent;
   }
+  if (!window.__nanobotSetCardRefresh) {
+    window.__nanobotSetCardRefresh = setCardRefreshHandler;
+  }
+  if (!window.__nanobotRefreshCard) {
+    window.__nanobotRefreshCard = runCardRefresh;
+  }
+  if (!window.__nanobotSetCardSelection) {
+    window.__nanobotSetCardSelection = setCardSelection;
+  }
+  if (!window.__nanobotGetCardSelection) {
+    window.__nanobotGetCardSelection = getCardSelection;
+  }
+  if (!window.__nanobotClearCardSelection) {
+    window.__nanobotClearCardSelection = clearCardSelection;
+  }
 }
 
 declare global {
@@ -81,6 +160,17 @@ declare global {
       snapshot: JsonValue | null | undefined,
     ) => void;
     __nanobotGetCardLiveContent?: (cardId: string | null | undefined) => JsonValue | undefined;
+    __nanobotSetCardRefresh?: (
+      target: HTMLScriptElement | HTMLElement | null,
+      handler: (() => void) | null | undefined,
+    ) => void;
+    __nanobotRefreshCard?: (cardId: string | null | undefined) => boolean;
+    __nanobotSetCardSelection?: (
+      target: HTMLScriptElement | HTMLElement | null,
+      selection: JsonValue | null | undefined,
+    ) => void;
+    __nanobotGetCardSelection?: (cardId: string | null | undefined) => JsonValue | undefined;
+    __nanobotClearCardSelection?: (cardId: string | null | undefined) => void;
   }
 }
 
@@ -128,6 +218,8 @@ function CardTextBody({ card }: { card: CardItem }) {
     }
     return () => {
       window.__nanobotSetCardLiveContent?.(bodyRef.current, null);
+      window.__nanobotSetCardRefresh?.(bodyRef.current, null);
+      window.__nanobotSetCardSelection?.(bodyRef.current, null);
     };
   }, [card.id, card.content]);
 
@@ -184,6 +276,7 @@ function CardHeader({
 }) {
   const [menuOpen, setMenuOpen] = useState(false);
   const menuRef = useRef<HTMLDivElement>(null);
+  const canRefresh = card.kind === "text" && card.templateKey === "git-diff-live";
 
   useEffect(() => {
     if (!menuOpen) return;
@@ -235,6 +328,21 @@ function CardHeader({
         </button>
         {menuOpen && (
           <div class="card-menu" role="menu">
+            {canRefresh && (
+              <button
+                class="card-menu-item"
+                type="button"
+                role="menuitem"
+                onClick={(e) => {
+                  e.stopPropagation();
+                  setMenuOpen(false);
+                  if (!card.serverId) return;
+                  window.__nanobotRefreshCard?.(card.serverId);
+                }}
+              >
+                Refresh
+              </button>
+            )}
             {card.kind === "text" && (
               <button
                 class="card-menu-item"

frontend/src/hooks/useWebRTC.ts

@@ -294,11 +294,16 @@ function useCardPolling(loadPersistedCards: () => Promise<void>) {
     const onVisible = () => {
       if (document.visibilityState === "visible") loadPersistedCards().catch(() => {});
     };
+    const onCardsRefresh = () => {
+      loadPersistedCards().catch(() => {});
+    };
     window.addEventListener("focus", onVisible);
+    window.addEventListener("nanobot:cards-refresh", onCardsRefresh);
     document.addEventListener("visibilitychange", onVisible);
     return () => {
       window.clearInterval(pollId);
       window.removeEventListener("focus", onVisible);
+      window.removeEventListener("nanobot:cards-refresh", onCardsRefresh);
       document.removeEventListener("visibilitychange", onVisible);
     };
   }, [loadPersistedCards]);

frontend/src/index.css

@@ -4,6 +4,10 @@
   -webkit-user-select: none;
 }
 
+:root {
+  --card-font: "Iosevka", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
+}
+
 html {
   font: -apple-system-body;
 }
@@ -29,7 +33,7 @@ body {
   inset: 0;
   overflow: hidden;
   z-index: 1;
-  touch-action: pan-y;
+  touch-action: manipulation;
 }
 
 #swipe-track {
@@ -401,14 +405,17 @@ body {
 }
 .agent-card-context-row {
   display: flex;
-  align-items: center;
+  align-items: flex-start;
   justify-content: space-between;
   gap: 8px;
   margin-top: 4px;
 }
-.agent-card-context-title {
+.agent-card-context-main {
   min-width: 0;
   flex: 1;
+}
+.agent-card-context-title {
+  min-width: 0;
   font-size: 0.9rem;
   line-height: 1.2;
   font-weight: 700;
@@ -417,6 +424,16 @@ body {
   overflow: hidden;
   text-overflow: ellipsis;
 }
+.agent-card-context-meta {
+  margin-top: 2px;
+  font-size: 0.68rem;
+  line-height: 1.2;
+  font-weight: 600;
+  color: #8b654b;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
 .agent-card-context-clear {
   flex-shrink: 0;
   border: 1px solid #e3d6ca;
@@ -617,7 +634,7 @@ body {
   padding: 0;
   z-index: 2;
   pointer-events: auto;
-  touch-action: pan-y;
+  touch-action: manipulation;
   -webkit-overflow-scrolling: touch;
   scrollbar-width: thin;
   scrollbar-color: rgba(255, 200, 140, 0.25) transparent;
@@ -848,7 +865,7 @@ body {
 .card-question,
 .card-response,
 .card-footer {
-  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
+  font-family: var(--card-font);
   font-size: 0.75rem;
   line-height: 1.65;
   color: rgba(255, 245, 235, 0.82);
@@ -968,7 +985,7 @@ body {
   border: 1px solid rgba(255, 200, 140, 0.35);
   border-radius: 8px;
   color: rgba(255, 245, 235, 0.9);
-  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
+  font-family: var(--card-font);
   font-size: 0.75rem;
   padding: 6px 14px;
   cursor: pointer;

frontend/src/main.tsx

@@ -1,5 +1,9 @@
 import { render } from "preact";
 import { App } from "./App";
+import "@fontsource/iosevka/400.css";
+import "@fontsource/iosevka/600.css";
+import "@fontsource/iosevka/700.css";
+import "@fontsource/iosevka/800.css";
 import "./index.css";
 
 const root = document.getElementById("app");

frontend/src/types.ts

@@ -11,6 +11,18 @@ export type JsonValue =
   | { [key: string]: JsonValue }
   | JsonValue[];
 
+export interface CardSelectionRange {
+  kind: "git_diff_range";
+  file_path: string;
+  file_label: string;
+  range_label: string;
+  label: string;
+  old_start: number | null;
+  old_end: number | null;
+  new_start: number | null;
+  new_end: number | null;
+}
+
 export interface CardMessageMetadata {
   card_id?: string;
   card_slot?: string;
@@ -19,6 +31,8 @@ export interface CardMessageMetadata {
   card_template_key?: string;
   card_context_summary?: string;
   card_response_value?: string;
+  card_selection_label?: string;
+  card_selection?: JsonValue;
   card_live_content?: JsonValue;
 }
 

supertonic_gateway.py

@@ -62,6 +62,7 @@ class NanobotApiProcess:
         self._reader: asyncio.StreamReader | None = None
         self._writer: asyncio.StreamWriter | None = None
         self._read_task: asyncio.Task | None = None
+        self._socket_inode: int | None = None
 
     @property
     def running(self) -> bool:
@@ -72,6 +73,16 @@ class NanobotApiProcess:
             and not self._read_task.done()
         )
 
+    def matches_current_socket(self) -> bool:
+        if self._socket_inode is None:
+            return False
+        try:
+            return self._socket_path.stat().st_ino == self._socket_inode
+        except FileNotFoundError:
+            return False
+        except OSError:
+            return False
+
     async def start(self) -> None:
         if self.running:
             await self._bus.publish(WisperEvent(role="system", text="Already connected to nanobot."))
@@ -95,6 +106,7 @@ class NanobotApiProcess:
             self._reader, self._writer = await asyncio.open_unix_connection(
                 path=str(self._socket_path)
             )
+            self._socket_inode = self._socket_path.stat().st_ino
         except OSError as exc:
             await self._bus.publish(
                 WisperEvent(role="system", text=f"Could not connect to nanobot API socket: {exc}")
@@ -107,7 +119,7 @@ class NanobotApiProcess:
     async def send(self, text: str, metadata: dict[str, Any] | None = None) -> None:
         if not self.running or self._writer is None:
             await self._bus.publish(WisperEvent(role="system", text="Not connected to nanobot."))
-            return
+            raise RuntimeError("Not connected to nanobot.")
         try:
             await self._send_notification(
                 "message.send",
@@ -120,10 +132,11 @@ class NanobotApiProcess:
         except OSError as exc:
             await self._bus.publish(WisperEvent(role="system", text=f"Send failed: {exc}"))
             await self._cleanup()
+            raise RuntimeError(f"Send failed: {exc}") from exc
 
     async def send_card_response(self, card_id: str, value: str) -> None:
         if not self.running or self._writer is None:
-            return
+            raise RuntimeError("Not connected to nanobot.")
         try:
             await self._send_notification(
                 "card.respond",
@@ -135,11 +148,12 @@ class NanobotApiProcess:
         except OSError as exc:
             await self._bus.publish(WisperEvent(role="system", text=f"Send failed: {exc}"))
             await self._cleanup()
+            raise RuntimeError(f"Send failed: {exc}") from exc
 
     async def send_command(self, command: str) -> None:
         if not self.running or self._writer is None:
             await self._bus.publish(WisperEvent(role="system", text="Not connected to nanobot."))
-            return
+            raise RuntimeError("Not connected to nanobot.")
         try:
             await self._send_notification(
                 "command.execute",
@@ -151,6 +165,7 @@ class NanobotApiProcess:
         except OSError as exc:
             await self._bus.publish(WisperEvent(role="system", text=f"Send failed: {exc}"))
             await self._cleanup()
+            raise RuntimeError(f"Send failed: {exc}") from exc
 
     async def stop(self) -> None:
         await self._cleanup()
@@ -173,6 +188,7 @@ class NanobotApiProcess:
                 pass
         self._writer = None
         self._reader = None
+        self._socket_inode = None
 
     async def _send_notification(self, method: str, params: dict[str, Any]) -> None:
         assert self._writer is not None
@@ -264,26 +280,35 @@ class SuperTonicGateway:
             self._process = NanobotApiProcess(bus=self.bus, socket_path=self._socket_path)
             await self._process.start()
 
+    async def _ensure_connected_process(self) -> NanobotApiProcess:
+        if self._process and self._process.running and self._process.matches_current_socket():
+            return self._process
+        if self._process:
+            await self._process.stop()
+        self._process = NanobotApiProcess(bus=self.bus, socket_path=self._socket_path)
+        await self._process.start()
+        if not self._process.running or not self._process.matches_current_socket():
+            raise RuntimeError("Not connected to nanobot.")
+        return self._process
+
     async def send_user_message(self, text: str, metadata: dict[str, Any] | None = None) -> None:
         message = text.strip()
         if not message:
             return
         await self.bus.publish(WisperEvent(role="user", text=message))
         async with self._lock:
-            if not self._process:
+            process = await self._ensure_connected_process()
-                await self.bus.publish(WisperEvent(role="system", text="Not connected to nanobot."))
+            await process.send(message, metadata=metadata)
-                return
-            await self._process.send(message, metadata=metadata)
 
     async def send_card_response(self, card_id: str, value: str) -> None:
         async with self._lock:
-            if self._process:
+            process = await self._ensure_connected_process()
-                await self._process.send_card_response(card_id, value)
+            await process.send_card_response(card_id, value)
 
     async def send_command(self, command: str) -> None:
         async with self._lock:
-            if self._process:
+            process = await self._ensure_connected_process()
-                await self._process.send_command(command)
+            await process.send_command(command)
 
     async def disconnect_nanobot(self) -> None:
         async with self._lock:

voice_rtc.py

@@ -1045,7 +1045,7 @@ class WebRTCVoiceSession:
 
         if self._stt_worker_task:
             self._stt_worker_task.cancel()
-            with contextlib.suppress(asyncio.CancelledError):
+            with contextlib.suppress(asyncio.CancelledError, RuntimeError):
                 await self._stt_worker_task
             self._stt_worker_task = None
 
@@ -1313,10 +1313,15 @@ class WebRTCVoiceSession:
             await self._gateway.bus.publish(
                 WisperEvent(role="wisper", text=f"voice transcript: {transcript}")
             )
+            try:
                 await self._gateway.send_user_message(
                     transcript,
                     metadata=dict(self._active_message_metadata),
                 )
+            except RuntimeError as exc:
+                if self._closed:
+                    return
+                await self._publish_system(f"Could not deliver voice transcript: {exc}")
 
     async def _close_peer_connection(self) -> None:
         self._dc = None