fix(web): align the context separator with ToolRow and name the caption

Review follow-ups on the context provenance row:

- the producer name now follows ToolRow's aria-hidden separator dot instead
  of a literal middot inside the text, so the two disclosure rows expose one
  accessible-name shape;
- the English steering caption becomes the noun `Interjection`, parallel to
  the Chinese 插话 and to the label this bubble carried before;
- the history fold gets its own provenance assertion, so the mapping it
  declares separately from TranscriptAdapter is pinned on both sides;
- the superseded-in-part bullet on the no-interjection-chrome note now
  enumerates the third Decision bullet too, whose no-badge and no-IconActions
  clauses had both lapsed.

apps/web/tests/seeded-history.e2e.ts

@@ -238,7 +238,7 @@ describe('web e2e: seeded history renders through cold resume', () => {
     }))
     // The header names the producer the durable source records, so the
     // reconciled instruction file is readable without expanding the row.
-    await page.getByRole('button', { name: 'Context injection · AGENTS.md', exact: true })
+    await page.getByRole('button', { name: 'Context injection AGENTS.md', exact: true })
       .waitFor({ timeout: 10_000 })
   }, 60_000)
 
@@ -257,7 +257,7 @@ describe('web e2e: seeded history renders through cold resume', () => {
 
   it.skipIf(MODE === 'record')('matches the Figma context disclosure geometry', async () => {
     onTestFailed(() => saveFailureShot(page, 'web-e2e-context-injection'))
-    const disclosure = page.getByRole('button', { name: 'Context injection · AGENTS.md', exact: true })
+    const disclosure = page.getByRole('button', { name: 'Context injection AGENTS.md', exact: true })
     expect(await disclosure.getAttribute('aria-expanded')).toBe('false')
     const collapsedIcon = disclosure.locator('svg').first()
     const collapsedIconBox = await collapsedIcon.boundingBox()
@@ -368,7 +368,7 @@ describe('web e2e: seeded history renders through cold resume', () => {
       source: { kind: 'plugin', plugin: 'fixture' },
     }))
 
-    const disclosure = page.getByRole('button', { name: 'Context injection · fixture', exact: true })
+    const disclosure = page.getByRole('button', { name: 'Context injection fixture', exact: true })
     await disclosure.waitFor({ timeout: 10_000 })
     await disclosure.click()
     await expect.poll(() => disclosure.getAttribute('aria-expanded')).toBe('true')

apps/web/tests/snapshots/bash-abort-row/ui.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - 'button "Failed Bash Error: command aborted" [expanded]':
   - img
   - text: "Failed Bash Error: command aborted"

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - 'button "Think The user wants me to write a single `run_code` program that:"':
   - img
   - img

apps/web/tests/snapshots/cordis-tool-round/ui.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Think The user wants me to:":
   - img
   - img

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Think The user wants me to run a simple bash command and reply with \"DONE\".":
   - img
   - img

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Think The user wants me to reply with a single word. Let me comply.":
   - img
   - img

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - paragraph: partial
 - text: Stopped
 - button "Copy":

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - status:
   - text: This turn failedAPI key is invalid
   - code: AUTH

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - paragraph: partial
 - status: Deep diving...
 - textbox "Message the agent"

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - group:
   - status: Retried model request (1/2) · {{duration}}
 - button "Think The user is asking for a one-sentence description of event sourcing. This is a straightforward knowledge question that doesn't require any skill loading or tool calls.":

apps/web/tests/snapshots/plan-review/approved.expected.md

@@ -11,10 +11,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - 'button "Think The user wants me to plan a small change to add a `--greeting` flag to a CLI. They explicitly told me not to read or write any files, and to call exit_plan_mode with a short plan. Let me do that directly."':
   - img
   - img

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Think The user wants me to use the ask_user_question tool with specific parameters. Let me do exactly that.":
   - img
   - img

apps/web/tests/snapshots/queue-actions/collapsed.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - paragraph: partial
 - status: Deep diving...
 - button "2 queued messages"

apps/web/tests/snapshots/queue-actions/editing.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - paragraph: partial
 - status: Deep diving...
 - button "2 queued messages" [disabled] [expanded]

apps/web/tests/snapshots/queue-actions/layout.expected.md

@@ -8,18 +8,18 @@
   - img
   - img
   - text: "goal Goal created Status: active Objective: Keep the composer context panels aligned Rounds: 0/256 Activation: armed Commands: /goal edit <objective>, /goal pause, /goal clear"
-- button "Context injection · goal":
+- button "Context injection goal":
   - img
   - img
-  - text: Context injection · goal
-- button "Context injection · goal":
+  - text: Context injection goal
+- button "Context injection goal":
   - img
   - img
-  - text: Context injection · goal
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+  - text: Context injection goal
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - paragraph: partial
 - status: Deep diving...
 - region "To-dos":

apps/web/tests/snapshots/queue-actions/preserved.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - paragraph: partial
 - text: Stopped
 - button "Copy":

apps/web/tests/snapshots/queue-actions/ui.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - paragraph: partial
 - status: Deep diving...
 - list:

apps/web/tests/snapshots/seeded-history/command-row.expected.md

@@ -37,10 +37,10 @@
 - button "Context compacted View compaction summary":
   - img
   - text: Context compacted View compaction summary
-- button "Context injection · AGENTS.md":
+- button "Context injection AGENTS.md":
   - img
   - img
-  - text: Context injection · AGENTS.md
+  - text: Context injection AGENTS.md
 - img
 - text: permission preset read-only
 - textbox "Message the agent"

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

@@ -37,10 +37,10 @@
 - button "Context compacted View compaction summary":
   - img
   - text: Context compacted View compaction summary
-- button "Context injection · AGENTS.md":
+- button "Context injection AGENTS.md":
   - img
   - img
-  - text: Context injection · AGENTS.md
+  - text: Context injection AGENTS.md
 - textbox "Message the agent"
 - button "Commands":
   - img

apps/web/tests/snapshots/steering/mid-steer.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
   - img
   - img
@@ -24,7 +24,7 @@
   - img
   - text: Ask question waiting
 - status: Deep diving...
-- text: "Steer Interjection: include the word BANANA in your final reply."
+- text: "Interjection Interjection: include the word BANANA in your final reply."
 - button "Copy":
   - img
 - region "Ready to continue?":

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

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Think The user wants me to use the ask_user_question tool to ask them a specific question with the given parameters. Let me do exactly that.":
   - img
   - img
@@ -22,7 +22,7 @@
   - img
   - img
   - text: Ask question 1/1 answered
-- text: "Steer Interjection: include the word BANANA in your final reply. {{clock}}"
+- text: "Interjection Interjection: include the word BANANA in your final reply. {{clock}}"
 - button "Copy":
   - img
 - button "Branch into a new conversation" [disabled]:

apps/web/tests/snapshots/subagent-conversation/ui.expected.md

@@ -15,10 +15,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Think The user is asking for a one-sentence description of event sourcing. This is a straightforward knowledge question that doesn't require any skill loading or tool calls.":
   - img
   - img

apps/web/tests/snapshots/web-search-round/ui.expected.md

@@ -10,10 +10,10 @@
 - button "Branch into a new conversation" [disabled]:
   - img
 - text: Available only on the last message of a completed turn
-- button "Context injection · @deepseek-ai/dsh-system-prompt":
+- button "Context injection @deepseek-ai/dsh-system-prompt":
   - img
   - img
-  - text: Context injection · @deepseek-ai/dsh-system-prompt
+  - text: Context injection @deepseek-ai/dsh-system-prompt
 - button "Search DeepSeek Harness snapshot search":
   - img
   - img