refactor: remove deprecated logout command and legacy sidechain logic

cli/src/commands/logout.ts

@@ -1,20 +0,0 @@
-import chalk from 'chalk'
-import { handleAuthCommand } from './auth'
-import type { CommandDefinition } from './types'
-
-export const logoutCommand: CommandDefinition = {
-    name: 'logout',
-    requiresRuntimeAssets: true,
-    run: async () => {
-        console.log(chalk.yellow('Note: "hapi logout" is deprecated. Use "hapi auth logout" instead.\n'))
-        try {
-            await handleAuthCommand(['logout'])
-        } catch (error) {
-            console.error(chalk.red('Error:'), error instanceof Error ? error.message : 'Unknown error')
-            if (process.env.DEBUG) {
-                console.error(error)
-            }
-            process.exit(1)
-        }
-    }
-}

cli/src/commands/registry.ts

@@ -6,7 +6,6 @@ import { daemonCommand } from './daemon'
 import { doctorCommand } from './doctor'
 import { geminiCommand } from './gemini'
 import { hookForwarderCommand } from './hookForwarder'
-import { logoutCommand } from './logout'
 import { mcpCommand } from './mcp'
 import { notifyCommand } from './notify'
 import { serverCommand } from './server'
@@ -22,7 +21,6 @@ const COMMANDS: CommandDefinition[] = [
     hookForwarderCommand,
     doctorCommand,
     daemonCommand,
-    logoutCommand,
     notifyCommand
 ]
 

web/src/chat/reducer.ts

@@ -47,21 +47,6 @@ export function reduceChatBlocks(
     const rootResult = reduceTimeline(root, reducerContext)
     let hasReadyEvent = rootResult.hasReadyEvent
 
-    // If a group couldn't be attached to a Task tool call (e.g. legacy shapes), keep it visible.
-    for (const [taskMessageId, sidechainMessages] of groups) {
-        if (consumedGroupIds.has(taskMessageId)) continue
-        if (sidechainMessages.length === 0) continue
-        const child = reduceTimeline(sidechainMessages, reducerContext)
-        hasReadyEvent = hasReadyEvent || child.hasReadyEvent
-        rootResult.blocks.push({
-            kind: 'agent-event',
-            id: `sidechain:${taskMessageId}`,
-            createdAt: sidechainMessages[0].createdAt,
-            event: { type: 'message', message: 'Task sidechain' }
-        })
-        rootResult.blocks.push(...child.blocks)
-    }
-
     // Only create permission-only tool cards when there is no tool call/result in the transcript.
     for (const [id, entry] of permissionsById) {
         if (toolIdsInMessages.has(id)) continue