fix(tui): preserve footer truncation after merge

examples/acp-agent/tests/snapshots/workspace-edit/stdout.expected.windows.jsonl

@@ -1,6 +1,7 @@
 {"jsonrpc":"2.0","id":1,"result":{"protocolVersion":1,"agentInfo":{"name":"deepseek-harness-acp","version":"0.0.1"},"agentCapabilities":{"loadSession":true,"promptCapabilities":{"image":false,"audio":false,"embeddedContext":false}},"authMethods":[]}}
 {"jsonrpc":"2.0","id":2,"result":{"sessionId":"{{sessionId}}","configOptions":[{"id":"model","name":"Model","description":"Sets this session's provider and model.","category":"model","type":"select","currentValue":"[\"deepseek\",\"deepseek-v4-flash\"]","options":[{"value":"[\"deepseek\",\"deepseek-v4-flash\"]","name":"deepseek-v4-flash"},{"value":"[\"deepseek\",\"deepseek-v4-pro\"]","name":"deepseek-v4-pro"}]},{"id":"permission","name":"Permissions","description":"The session permission preset: each choice bundles a sandbox mode and an approval policy.","category":"mode","type":"select","currentValue":"danger-full-access","options":[{"value":"workspace-write","name":"workspace-write","description":"Write inside the workspace and permitted temporary directories; wider retries require approval."},{"value":"danger-full-access","name":"danger-full-access","description":"Full file access without approval prompts."}]}]}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"available_commands_update","availableCommands":[{"name":"goal","description":"set or view the goal for a long-running task","input":{"hint":"[<objective>|clear|edit <objective>|pause|resume]"}}]}}}
+{"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"session_info_update","title":"A file named greeting.txt in","updatedAt":"{{updatedAt}}"}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":"The"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" user"}}}}
 {"jsonrpc":"2.0","method":"session/update","params":{"sessionId":"{{sessionId}}","update":{"sessionUpdate":"agent_thought_chunk","content":{"type":"text","text":" wants"}}}}

packages/ui/tui/src/index.ts

@@ -777,10 +777,7 @@ class FooterComponent implements Component {
       return [`${' '.repeat(Math.max(0, width - visibleWidth(compact)))}${this.palette.dim(compact)}`]
     }
     const rightAvailable = width - visibleWidth(counters) - 1
-    const fullWidth = visibleWidth(formattedCwd) + visibleWidth(counters) + visibleWidth(fullRight) + 3
-    const right = this.cwdFormatter === undefined
-      ? (visibleWidth(fullRight) <= rightAvailable ? fullRight : compactRight)
-      : (fullWidth <= width ? fullRight : compactRight)
+    const right = visibleWidth(fullRight) <= rightAvailable ? fullRight : compactRight
     const rightClipped = truncateToWidth(right, rightAvailable, '')
     const cwdAvailable = Math.max(0, width - visibleWidth(counters) - visibleWidth(rightClipped) - 3)
     const cwd = truncateToWidth(formattedCwd, cwdAvailable, '')

packages/ui/tui/tests/tui.spec.ts

@@ -511,10 +511,10 @@ describe('pi-tui chat lifecycle and transcript', () => {
     await dispose(outsideResult)
 
     const logicalResult = await setup({
-      cwd: '/host/worktree',
+      cwd: '/w',
       formatCwd: cwd => `logical:${cwd}\x1b`,
     })
-    expect(logicalResult.terminal.output).toContain('logical:/host/worktree\\x1b')
+    expect(logicalResult.terminal.output).toContain('logical:/w\\x1b')
     await dispose(logicalResult)
   })