feat(aircoding): AirCoding V2 baseline — deterministic multi-agent architecture

Forked from OpenCode v1.17.4 with multi-agent system:
- 5 agents: aircoding, scheduler, worker, architect, reviewer
- Deterministic DAG scheduling engine (coordinator_tick)
- Tool whitelists as hard enforcement
- AirCoding validation plugin
- V1 requirements: C4 docs, ADR, AGENTS.md, debug-log.md
- Design documents in docs/

packages/app/src/components/session/session-sortable-tab.tsx

@@ -0,0 +1,70 @@
+import { createMemo, Show } from "solid-js"
+import type { JSX } from "solid-js"
+import { createSortable } from "@thisbeyond/solid-dnd"
+import { FileIcon } from "@opencode-ai/ui/file-icon"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { TooltipKeybind } from "@opencode-ai/ui/tooltip"
+import { Tabs } from "@opencode-ai/ui/tabs"
+import { getFilename } from "@opencode-ai/core/util/path"
+import { useFile } from "@/context/file"
+import { useLanguage } from "@/context/language"
+import { useCommand } from "@/context/command"
+
+export function FileVisual(props: { path: string; active?: boolean }): JSX.Element {
+  return (
+    <div class="flex items-center gap-x-1.5 min-w-0">
+      <Show
+        when={!props.active}
+        fallback={<FileIcon node={{ path: props.path, type: "file" }} class="size-4 shrink-0" />}
+      >
+        <span class="relative inline-flex size-4 shrink-0">
+          <FileIcon node={{ path: props.path, type: "file" }} class="absolute inset-0 size-4 tab-fileicon-color" />
+          <FileIcon node={{ path: props.path, type: "file" }} mono class="absolute inset-0 size-4 tab-fileicon-mono" />
+        </span>
+      </Show>
+      <span class="text-14-medium truncate">{getFilename(props.path)}</span>
+    </div>
+  )
+}
+
+export function SortableTab(props: { tab: string; onTabClose: (tab: string) => void }): JSX.Element {
+  const file = useFile()
+  const language = useLanguage()
+  const command = useCommand()
+  const sortable = createSortable(props.tab)
+  const path = createMemo(() => file.pathFromTab(props.tab))
+  const content = createMemo(() => {
+    const value = path()
+    if (!value) return
+    return <FileVisual path={value} />
+  })
+  return (
+    <div use:sortable class="h-full flex items-center" classList={{ "opacity-0": sortable.isActiveDraggable }}>
+      <div class="relative">
+        <Tabs.Trigger
+          value={props.tab}
+          closeButton={
+            <TooltipKeybind
+              title={language.t("common.closeTab")}
+              keybind={command.keybind("tab.close")}
+              placement="bottom"
+              gutter={10}
+            >
+              <IconButton
+                icon="close-small"
+                variant="ghost"
+                class="h-5 w-5"
+                onClick={() => props.onTabClose(props.tab)}
+                aria-label={language.t("common.closeTab")}
+              />
+            </TooltipKeybind>
+          }
+          hideCloseButton
+          onMiddleClick={() => props.onTabClose(props.tab)}
+        >
+          <Show when={content()}>{(value) => value()}</Show>
+        </Tabs.Trigger>
+      </div>
+    </div>
+  )
+}