test(web): connect a Workspace in the e2e boot path and refresh goldens

The startup-selection flow leaves a fresh world (no Workspace) in the
locked view state, so every e2e scenario that types into the composer
now connects one first via the shared connectFreshWorkspace helper
(hero picker create-by-name dialog; the default 'workspace' name keeps
the session-header cwd assertions intact).

Golden refreshes carry the current composer chrome: the plan/model
control seats are empty until their owning plugins register (the seats
shipped without occupants on this branch), the sidebar shows the
connected workspace group pre-send, and the bash details material
renders Input/code/Output as separate nodes. The cancel scenario polls
the frozen-partial swap instead of counting synchronously — the abort
frame reaches the browser over SSE after the host settles.

apps/web/tests/snapshots/code-mode-round/ui.expected.md

@@ -23,13 +23,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/fresh-round-trip/ui.expected.md

@@ -19,13 +19,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/lifecycle-chrome/hero.expected.md

@@ -11,7 +11,11 @@
 - button "Search sessions":
   - img
 - textbox "Search name, keywords..."
-- tree "Sessions": No sessions yet
+- tree "Sessions":
+  - treeitem "workspace 1 session" [expanded]:
+    - img
+    - text: workspace 1 session
+  - treeitem "New Session now" [selected]
 - button "设置":
   - img
   - text: 设置
@@ -23,13 +27,10 @@
 - textbox "Describe what you want to build"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]
+- text: 详情
+- button "关闭详情"
+- text: 点击消息流中的工具行查看详情

apps/web/tests/snapshots/lifecycle-chrome/reloaded.expected.md

@@ -15,13 +15,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/live-interactions/cancel.expected.md

@@ -12,13 +12,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/live-interactions/error-auth.expected.md

@@ -10,13 +10,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/live-interactions/retry.expected.md

@@ -15,13 +15,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/navigation-panes/details-open.expected.md

@@ -1,3 +1,5 @@
 - text: bash
 - button "关闭详情"
-- text: "Input { \"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\" } Output NAVIGATION_OK"
+- text: Input
+- code: "{ \"command\": \"echo NAVIGATION_OK\", \"description\": \"Print NAVIGATION_OK\" }"
+- text: Output NAVIGATION_OK

apps/web/tests/snapshots/question-composer/answered.expected.md

@@ -21,13 +21,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/seeded-history/ui.expected.md

@@ -24,13 +24,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]

apps/web/tests/snapshots/steering/settled.expected.md

@@ -21,13 +21,7 @@
 - textbox "Message the agent"
 - button "Add attachment":
   - img
-- combobox "Plan mode":
-  - option "Plan" [selected]
-  - option "Agent"
 - combobox "Access mode":
   - option "Read-only" [selected]
   - option "Read-write"
-- combobox "Model":
-  - option "DeepSeek-V4-Pro High" [selected]
-  - option "DeepSeek-V4-Pro"
 - button "Send message" [disabled]