diff --git a/packages/@ant/ink/src/index.ts b/packages/@ant/ink/src/index.ts
index 9d9453002..a6300fcb6 100644
--- a/packages/@ant/ink/src/index.ts
+++ b/packages/@ant/ink/src/index.ts
@@ -12,7 +12,7 @@
 // ============================================================
 export { default as wrappedRender, renderSync, createRoot } from './core/root.js'
 export type { RenderOptions, Instance, Root } from './core/root.js'
-
+export * from './theme/theme-types.js'
 // InkCore class
 export { default as Ink } from './core/ink.js'
 
diff --git a/src/cli/print.ts b/src/cli/print.ts
index 43d255637..662aa865d 100644
--- a/src/cli/print.ts
+++ b/src/cli/print.ts
@@ -2256,7 +2256,7 @@ function runHeadlessStreaming(
               { turnStartTime } as import('src/utils/filePersistence/types.js').TurnStartTime,
               abortController.signal,
               result => {
-                const filesResult = result as { persistedFiles: { filename: string; file_id: string }[]; failedFiles: { filename: string; error: string }[] }
+                const filesResult = result as unknown as { persistedFiles: { filename: string; file_id: string }[]; failedFiles: { filename: string; error: string }[] }
                 output.enqueue({
                   type: 'system' as const,
                   subtype: 'files_persisted' as const,
@@ -3315,7 +3315,7 @@ function runHeadlessStreaming(
             output,
           )
         } else if (req.subtype === 'mcp_authenticate') {
-          const { serverName } = req
+          const serverName = req.serverName as string
           const currentAppState = getAppState()
           const config =
             getMcpConfigByName(serverName) ??
@@ -3333,9 +3333,9 @@ function runHeadlessStreaming(
           } else {
             try {
               // Abort any previous in-flight OAuth flow for this server
-              activeOAuthFlows.get(serverName)?.abort()
+              activeOAuthFlows.get(serverName as string)?.abort()
               const controller = new AbortController()
-              activeOAuthFlows.set(serverName, controller)
+              activeOAuthFlows.set(serverName as string, controller)
 
               // Capture the auth URL from the callback
               let resolveAuthUrl: (url: string) => void
@@ -3345,14 +3345,14 @@ function runHeadlessStreaming(
 
               // Start the OAuth flow in the background
               const oauthPromise = performMCPOAuthFlow(
-                serverName,
+                serverName as string,
                 config,
                 url => resolveAuthUrl!(url),
                 controller.signal,
                 {
                   skipBrowserOpen: true,
                   onWaitingForCallback: submit => {
-                    oauthCallbackSubmitters.set(serverName, submit)
+                    oauthCallbackSubmitters.set(serverName as string, submit)
                   },
                 },
               )
@@ -3386,27 +3386,27 @@ function runHeadlessStreaming(
               const fullFlowPromise = oauthPromise
                 .then(async () => {
                   // Don't reconnect if the server was disabled during the OAuth flow
-                  if (isMcpServerDisabled(serverName)) {
+                  if (isMcpServerDisabled(serverName as string)) {
                     return
                   }
                   // Skip reconnect if the manual callback path was used —
                   // handleAuthDone will do it via mcp_reconnect (which
                   // updates dynamicMcpState for tool registration).
-                  if (oauthManualCallbackUsed.has(serverName)) {
+                  if (oauthManualCallbackUsed.has(serverName as string)) {
                     return
                   }
                   // Reconnect the server after successful auth
                   const result = await reconnectMcpServerImpl(
-                    serverName,
+                    serverName as string,
                     config,
                   )
-                  const prefix = getMcpPrefix(serverName)
+                  const prefix = getMcpPrefix(serverName as string)
                   setAppState(prev => ({
                     ...prev,
                     mcp: {
                       ...prev.mcp,
                       clients: prev.mcp.clients.map(c =>
-                        c.name === serverName ? result.client : c,
+                        c.name === serverName as string ? result.client : c,
                       ),
                       tools: [
                         ...reject(prev.mcp.tools, t =>
@@ -3416,7 +3416,7 @@ function runHeadlessStreaming(
                       ],
                       commands: [
                         ...reject(prev.mcp.commands, c =>
-                          commandBelongsToServer(c, serverName),
+                          commandBelongsToServer(c, serverName as string),
                         ),
                         ...result.commands,
                       ],
@@ -3424,9 +3424,9 @@ function runHeadlessStreaming(
                         result.resources && result.resources.length > 0
                           ? {
                               ...prev.mcp.resources,
-                              [serverName]: result.resources,
+                              [serverName as string]: result.resources,
                             }
-                          : omit(prev.mcp.resources, serverName),
+                          : omit(prev.mcp.resources, serverName as string),
                     },
                   }))
                   // Also update dynamicMcpState so run() picks up the new tools
@@ -3449,17 +3449,17 @@ function runHeadlessStreaming(
                 })
                 .catch(error => {
                   logForDebugging(
-                    `MCP OAuth failed for ${serverName}: ${error}`,
+                    `MCP OAuth failed for ${serverName as string}: ${error}`,
                     { level: 'error' },
                   )
                 })
                 .finally(() => {
                   // Clean up only if this is still the active flow
-                  if (activeOAuthFlows.get(serverName) === controller) {
-                    activeOAuthFlows.delete(serverName)
-                    oauthCallbackSubmitters.delete(serverName)
-                    oauthManualCallbackUsed.delete(serverName)
-                    oauthAuthPromises.delete(serverName)
+                  if (activeOAuthFlows.get(serverName as string) === controller) {
+                    activeOAuthFlows.delete(serverName as string)
+                    oauthCallbackSubmitters.delete(serverName as string)
+                    oauthManualCallbackUsed.delete(serverName as string)
+                    oauthAuthPromises.delete(serverName as string)
                   }
                 })
               void fullFlowPromise
@@ -3468,7 +3468,8 @@ function runHeadlessStreaming(
             }
           }
         } else if (req.subtype === 'mcp_oauth_callback_url') {
-          const { serverName, callbackUrl } = req
+          const serverName = req.serverName as string
+          const callbackUrl = req.callbackUrl as string
           const submit = oauthCallbackSubmitters.get(serverName)
           if (submit) {
             // Validate the callback URL before submitting. The submit
@@ -3477,7 +3478,7 @@ function runHeadlessStreaming(
             // block the control message loop until timeout.
             let hasCodeOrError = false
             try {
-              const parsed = new URL(callbackUrl)
+              const parsed = new URL(callbackUrl as string | URL)
               hasCodeOrError =
                 parsed.searchParams.has('code') ||
                 parsed.searchParams.has('error')
@@ -3491,7 +3492,7 @@ function runHeadlessStreaming(
               )
             } else {
               oauthManualCallbackUsed.add(serverName)
-              submit(callbackUrl)
+              submit(callbackUrl as string)
               // Wait for auth (token exchange) to complete before responding.
               // Reconnect is handled by the extension via handleAuthDone →
               // mcp_reconnect (which updates dynamicMcpState for tools).
@@ -3524,7 +3525,7 @@ function runHeadlessStreaming(
           // both URLs and wait. Automatic URL → localhost listener catches
           // the redirect if the browser is on this host; manual URL → the
           // success page shows "code#state" for claude_oauth_callback.
-          const { loginWithClaudeAi } = req
+          const loginWithClaudeAi = req.loginWithClaudeAi as boolean | undefined
 
           // Clean up any prior flow. cleanup() closes the localhost listener
           // and nulls the manual resolver. The prior `flow` promise is left
@@ -3534,7 +3535,7 @@ function runHeadlessStreaming(
           claudeOAuth?.service.cleanup()
 
           logEvent('tengu_oauth_flow_start', {
-            loginWithClaudeAi: loginWithClaudeAi ?? true,
+            loginWithClaudeAi: (loginWithClaudeAi ?? true) as boolean | number,
           })
 
           const service = new OAuthService()
@@ -3557,7 +3558,7 @@ function runHeadlessStreaming(
                 urlResolver({ manualUrl, automaticUrl: automaticUrl! })
               },
               {
-                loginWithClaudeAi: loginWithClaudeAi ?? true,
+                loginWithClaudeAi: (loginWithClaudeAi ?? true) as boolean,
                 skipBrowserOpen: true,
               },
             )
@@ -3569,7 +3570,7 @@ function runHeadlessStreaming(
               // next API call re-reads keychain/file and works. No respawn.
               await installOAuthTokens(tokens)
               logEvent('tengu_oauth_success', {
-                loginWithClaudeAi: loginWithClaudeAi ?? true,
+                loginWithClaudeAi: (loginWithClaudeAi ?? true) as boolean | number,
               })
             })
             .finally(() => {
@@ -3656,7 +3657,7 @@ function runHeadlessStreaming(
             )
           }
         } else if (req.subtype === 'mcp_clear_auth') {
-          const { serverName } = req
+          const serverName = req.serverName as string
           const currentAppState = getAppState()
           const config =
             getMcpConfigByName(serverName) ??
@@ -3680,7 +3681,7 @@ function runHeadlessStreaming(
               mcp: {
                 ...prev.mcp,
                 clients: prev.mcp.clients.map(c =>
-                  c.name === serverName ? result.client : c,
+                  c.name === serverName as string ? result.client : c,
                 ),
                 tools: [
                   ...reject(prev.mcp.tools, t => t.name?.startsWith(prefix)),
@@ -3791,7 +3792,8 @@ function runHeadlessStreaming(
           // Fire-and-forget so the Haiku call does not block the stdin loop
           // (which would delay processing of subsequent user messages /
           // interrupts for the duration of the API roundtrip).
-          const { description, persist } = req
+          const description = req.description as string
+          const persist = req.persist as boolean
           // Reuse the live controller only if it has not already been aborted
           // (e.g. by interrupt()); an aborted signal would cause queryHaiku to
           // immediately throw APIUserAbortError → {title: null}.
@@ -3835,7 +3837,7 @@ function runHeadlessStreaming(
           // matches in the common case. May still miss the cache for
           // coordinator mode or memory-mechanics extras — acceptable, the
           // alternative is the side question failing entirely.
-          const { question } = req
+          const question = req.question as string
           void (async () => {
             try {
               const saved = getLastCacheSafeParams()
diff --git a/src/cli/structuredIO.ts b/src/cli/structuredIO.ts
index 3f8d426e2..fba44e61b 100644
--- a/src/cli/structuredIO.ts
+++ b/src/cli/structuredIO.ts
@@ -679,7 +679,7 @@ export class StructuredIO {
             {
               subtype: 'hook_callback',
               callback_id: callbackId,
-              input: input as Parameters<HookCallback['callback']>[0],
+              input: input as any,
               tool_use_id: toolUseID || undefined,
             },
             hookJSONOutputSchema(),
diff --git a/src/components/BuiltinStatusLine.tsx b/src/components/BuiltinStatusLine.tsx
index 45fe3805b..733d5574b 100644
--- a/src/components/BuiltinStatusLine.tsx
+++ b/src/components/BuiltinStatusLine.tsx
@@ -81,7 +81,7 @@ function BuiltinStatusLineInner({
   const tokenDisplay = `${formatTokens(usedTokens)}/${formatTokens(contextWindowSize)}`;
 
   return (
-    <Box wrap="truncate">
+    <Box>
       {/* Model name */}
       <Text>{shortModel}</Text>
 
diff --git a/src/components/PromptInput/PromptInputFooterSuggestions.tsx b/src/components/PromptInput/PromptInputFooterSuggestions.tsx
index 60dc39d57..e6b2065b6 100644
--- a/src/components/PromptInput/PromptInputFooterSuggestions.tsx
+++ b/src/components/PromptInput/PromptInputFooterSuggestions.tsx
@@ -163,7 +163,7 @@ const SuggestionItemRow = memo(function SuggestionItemRow({
         {paddedDisplayText}
       </Text>
       {tagText ? (
-        <Text color={item.tag === 'local' ? ('yellow' as const) : undefined} dimColor={item.tag !== 'local'}>
+        <Text color={item.tag === 'local' ? 'ansi:yellow' : undefined} dimColor={item.tag !== 'local'}>
           {tagText}
         </Text>
       ) : null}
diff --git a/src/components/skills/SkillsMenu.tsx b/src/components/skills/SkillsMenu.tsx
index 37a196d45..6bbf48bf2 100644
--- a/src/components/skills/SkillsMenu.tsx
+++ b/src/components/skills/SkillsMenu.tsx
@@ -9,6 +9,7 @@ import {
   type PromptCommand,
 } from '../../commands.js'
 import { Box, Text } from '@anthropic/ink'
+import type { Theme } from '@anthropic/ink'
 import {
   estimateSkillFrontmatterTokens,
   getSkillsPath,
@@ -140,7 +141,7 @@ export function SkillsMenu({ onExit, commands }: Props): React.ReactNode {
   }
 
   const getScopeTag = (
-    source: SkillSource,
+    source: string,
   ): { label: string; color: string } | undefined => {
     switch (source) {
       case 'projectSettings':
@@ -169,6 +170,7 @@ export function SkillsMenu({ onExit, commands }: Props): React.ReactNode {
         <Text>{getCommandName(skill)}</Text>
         {scopeTag && (
           <Text color={scopeTag.color as keyof Theme}> [{scopeTag.label}]</Text>
+
         )}
         <Text dimColor>
           {pluginName ? ` · ${pluginName}` : ''} · {tokenDisplay} description
diff --git a/src/components/tasks/RemoteSessionDetailDialog.tsx b/src/components/tasks/RemoteSessionDetailDialog.tsx
index 1e2e2e46c..f21291b5e 100644
--- a/src/components/tasks/RemoteSessionDetailDialog.tsx
+++ b/src/components/tasks/RemoteSessionDetailDialog.tsx
@@ -29,6 +29,7 @@ import {
   formatReviewStageCounts,
   RemoteSessionProgress,
 } from './RemoteSessionProgress.js'
+import { AssistantMessage } from 'src/types/message.js'
 
 type Props = {
   session: DeepImmutable<RemoteAgentTaskState>
@@ -122,7 +123,7 @@ function UltraplanSessionDetail({
     let lastBlock: { name: string; input: unknown } | null = null
     for (const msg of session.log) {
       if (msg.type !== 'assistant') continue
-      const content = msg.message?.content ?? []
+      const content = (msg.message as { content?: unknown[] })?.content ?? []
       for (const block of content as Array<{type: string; name: string; input: unknown}>) {
         if (block.type !== 'tool_use') continue
         calls++
@@ -612,7 +613,7 @@ export function RemoteSessionDetailDialog({
               {lastMessages.map((msg, i) => (
                 <Message
                   key={i}
-                  message={msg}
+                  message={msg as AssistantMessage}
                   lookups={EMPTY_LOOKUPS}
                   addMargin={i > 0}
                   tools={toolUseContext.options.tools}
diff --git a/src/hooks/useReplBridge.tsx b/src/hooks/useReplBridge.tsx
index c19304ffe..2b9899117 100644
--- a/src/hooks/useReplBridge.tsx
+++ b/src/hooks/useReplBridge.tsx
@@ -44,6 +44,7 @@ import {
   transitionPermissionMode,
 } from '../utils/permissions/permissionSetup.js'
 import { getLeaderToolUseConfirmQueue } from '../utils/swarm/leaderPermissionBridge.js'
+import { ContentBlockParam } from '@anthropic-ai/sdk/resources'
 
 /** How long after a failure before replBridgeEnabled is auto-cleared (stops retries). */
 export const BRIDGE_FAILURE_DISMISS_MS = 10_000
@@ -226,7 +227,7 @@ export function useReplBridge(
                 '../bridge/inboundAttachments.js'
               )
               const rawContent = fields.content
-              let sanitized: string | Array<{ type: string; [key: string]: unknown }> = typeof rawContent === 'string' ? rawContent : rawContent as Array<{ type: string; [key: string]: unknown }>
+              let sanitized: string | Array<{ type: string; [key: string]: unknown }> = typeof rawContent === 'string' ? rawContent : rawContent as unknown as Array<{ type: string; [key: string]: unknown }>
               if (feature('KAIROS_GITHUB_WEBHOOKS')) {
                 /* eslint-disable @typescript-eslint/no-require-imports */
                 const { sanitizeInboundWebhookContent } =
@@ -236,7 +237,7 @@ export function useReplBridge(
                   sanitized = sanitizeInboundWebhookContent(sanitized)
                 }
               }
-              const content = await resolveAndPrepend(msg, sanitized)
+              const content = await resolveAndPrepend(msg, sanitized as string | ContentBlockParam[])
 
               const preview =
                 typeof content === 'string'
diff --git a/src/hooks/useSSHSession.ts b/src/hooks/useSSHSession.ts
index 1453231f0..0ee717e3e 100644
--- a/src/hooks/useSSHSession.ts
+++ b/src/hooks/useSSHSession.ts
@@ -98,7 +98,7 @@ export function useSSHSession({
           createToolStub(request.tool_name)
 
         const syntheticMessage = createSyntheticAssistantMessage(
-          request,
+          request as unknown as Parameters<typeof createSyntheticAssistantMessage>[0],
           requestId,
         )
 
diff --git a/src/services/api/gemini/index.ts b/src/services/api/gemini/index.ts
index 6935ac1bc..1b887878e 100644
--- a/src/services/api/gemini/index.ts
+++ b/src/services/api/gemini/index.ts
@@ -14,6 +14,7 @@ import {
   normalizeContentFromAPI,
   normalizeMessagesForAPI,
 } from '../../../utils/messages.js'
+import type { SDKAssistantMessageError } from '../../../entrypoints/agentSdkTypes.js'
 import type { SystemPrompt } from '../../../utils/systemPromptType.js'
 import type { ThinkingConfig } from '../../../utils/thinking.js'
 import type { Options } from '../claude.js'
@@ -186,7 +187,7 @@ export async function* queryModelGemini(
     yield createAssistantAPIErrorMessage({
       content: `API Error: ${errorMessage}`,
       apiError: 'api_error',
-      error: (error instanceof Error ? error : new Error(String(error))) as Error,
+      error: (error instanceof Error ? error : new Error(String(error))) as unknown as SDKAssistantMessageError,
     })
   }
 }
diff --git a/src/services/api/grok/client.ts b/src/services/api/grok/client.ts
index 034030107..060d12636 100644
--- a/src/services/api/grok/client.ts
+++ b/src/services/api/grok/client.ts
@@ -28,7 +28,7 @@ export function getGrokClient(options?: {
     maxRetries: options?.maxRetries ?? 0,
     timeout: parseInt(process.env.API_TIMEOUT_MS || String(600 * 1000), 10),
     dangerouslyAllowBrowser: true,
-    fetchOptions: getProxyFetchOptions({ forAnthropicAPI: false }) as RequestInit,
+    fetchOptions: getProxyFetchOptions({ forAnthropicAPI: false }),
     ...(options?.fetchOverride && { fetch: options.fetchOverride }),
   })
 
diff --git a/src/services/api/grok/index.ts b/src/services/api/grok/index.ts
index 8e4f934b4..3198e85f6 100644
--- a/src/services/api/grok/index.ts
+++ b/src/services/api/grok/index.ts
@@ -12,6 +12,7 @@ import { anthropicToolsToOpenAI, anthropicToolChoiceToOpenAI } from '../openai/c
 import { adaptOpenAIStreamToAnthropic } from '../openai/streamAdapter.js'
 import { resolveGrokModel } from './modelMapping.js'
 import { normalizeMessagesForAPI } from '../../../utils/messages.js'
+import type { SDKAssistantMessageError } from '../../../entrypoints/agentSdkTypes.js'
 import { toolToAPISchema } from '../../../utils/api.js'
 import { logForDebugging } from '../../../utils/debug.js'
 import { addToTotalSessionCost } from '../../../cost-tracker.js'
@@ -190,7 +191,7 @@ export async function* queryModelGrok(
     yield createAssistantAPIErrorMessage({
       content: `API Error: ${errorMessage}`,
       apiError: 'api_error',
-      error: (error instanceof Error ? error : new Error(String(error))) as Error,
+      error: (error instanceof Error ? error : new Error(String(error))) as unknown as SDKAssistantMessageError,
     })
   }
 }
diff --git a/src/services/api/openai/__tests__/thinking.test.ts b/src/services/api/openai/__tests__/thinking.test.ts
index c53abaf36..1a0b38fd8 100644
--- a/src/services/api/openai/__tests__/thinking.test.ts
+++ b/src/services/api/openai/__tests__/thinking.test.ts
@@ -151,7 +151,7 @@ describe('buildOpenAIRequestBody — thinking params', () => {
     messages: [{ role: 'user', content: 'hello' }],
     tools: [] as any[],
     toolChoice: undefined as any,
-  }
+  } as any
 
   test('includes official DeepSeek API thinking format when enabled', () => {
     const body = buildOpenAIRequestBody({ ...baseParams, enableThinking: true })
diff --git a/src/services/api/openai/client.ts b/src/services/api/openai/client.ts
index eea96cb8e..62a37dfbc 100644
--- a/src/services/api/openai/client.ts
+++ b/src/services/api/openai/client.ts
@@ -31,7 +31,7 @@ export function getOpenAIClient(options?: {
     dangerouslyAllowBrowser: true,
     ...(process.env.OPENAI_ORG_ID && { organization: process.env.OPENAI_ORG_ID }),
     ...(process.env.OPENAI_PROJECT_ID && { project: process.env.OPENAI_PROJECT_ID }),
-    fetchOptions: getProxyFetchOptions({ forAnthropicAPI: false }) as RequestInit,
+    fetchOptions: getProxyFetchOptions({ forAnthropicAPI: false }),
     ...(options?.fetchOverride && { fetch: options.fetchOverride }),
   })
 
diff --git a/src/services/api/openai/index.ts b/src/services/api/openai/index.ts
index 0f350ad3e..34bbe4875 100644
--- a/src/services/api/openai/index.ts
+++ b/src/services/api/openai/index.ts
@@ -36,6 +36,7 @@ import {
   createAssistantAPIErrorMessage,
   normalizeContentFromAPI,
 } from '../../../utils/messages.js'
+import type { SDKAssistantMessageError } from '../../../entrypoints/agentSdkTypes.js'
 import {
   isToolSearchEnabled,
   extractDiscoveredToolNames,
@@ -87,7 +88,11 @@ export function buildOpenAIRequestBody(params: {
   toolChoice: any
   enableThinking: boolean
   temperatureOverride?: number
-}): ChatCompletionCreateParamsStreaming {
+}): ChatCompletionCreateParamsStreaming & {
+  thinking?: { type: string }
+  enable_thinking?: boolean
+  chat_template_kwargs?: { thinking: boolean }
+} {
   const { model, messages, tools, toolChoice, enableThinking, temperatureOverride } = params
   return {
     model,
@@ -220,7 +225,7 @@ export async function* queryModelOpenAI(
     // 10. Get client and make streaming request
     const client = getOpenAIClient({
       maxRetries: 0,
-      fetchOverride: options.fetchOverride,
+      fetchOverride: options.fetchOverride as unknown as typeof fetch,
       source: options.querySource,
     })
 
@@ -354,7 +359,7 @@ export async function* queryModelOpenAI(
     yield createAssistantAPIErrorMessage({
       content: `API Error: ${errorMessage}`,
       apiError: 'api_error',
-      error: (error instanceof Error ? error : new Error(String(error))) as Error,
+      error: (error instanceof Error ? error : new Error(String(error))) as unknown as SDKAssistantMessageError,
     })
   }
 }
\ No newline at end of file
diff --git a/src/tools/AgentTool/UI.tsx b/src/tools/AgentTool/UI.tsx
index f1e762f57..19b4680a9 100644
--- a/src/tools/AgentTool/UI.tsx
+++ b/src/tools/AgentTool/UI.tsx
@@ -49,6 +49,7 @@ import type {
 import { inputSchema } from './AgentTool.js'
 import { getAgentColor } from './agentColorManager.js'
 import { GENERAL_PURPOSE_AGENT } from './built-in/generalPurposeAgent.js'
+import { BetaUsage } from '@anthropic-ai/sdk/resources/beta.mjs'
 
 const MAX_PROGRESS_MESSAGES_TO_SHOW = 3
 
@@ -411,7 +412,7 @@ export function renderToolResultMessage(
 
   const finalAssistantMessage = createAssistantMessage({
     content: completionMessage,
-    usage: { ...usage, inference_geo: null, iterations: null, speed: null } as typeof usage,
+    usage: { ...usage, inference_geo: null, iterations: null, speed: null } as unknown as BetaUsage,
   })
 
   return (
diff --git a/src/utils/computerUse/win32/bridgeClient.ts b/src/utils/computerUse/win32/bridgeClient.ts
index 70e747f5e..3e97e8b9f 100644
--- a/src/utils/computerUse/win32/bridgeClient.ts
+++ b/src/utils/computerUse/win32/bridgeClient.ts
@@ -131,10 +131,10 @@ export async function call<T = unknown>(
     try {
       const stdin = bridgeProc!.stdin
       if (stdin) {
-        const writable = stdin as Writable
+        const writable = stdin as unknown as Writable
         writable.write(JSON.stringify(req) + '\n')
-        if (typeof writable.flush === 'function') {
-          writable.flush()
+        if (typeof (writable as any).flush === 'function') {
+          (writable as any).flush()
         }
       }
     } catch (err) {
@@ -185,7 +185,7 @@ export function stopBridge(): void {
     try {
       const stdin = bridgeProc.stdin
       if (stdin) {
-        const writable = stdin as Writable
+        const writable = stdin as unknown as Writable
         if (typeof writable.end === 'function') {
           writable.end()
         }
diff --git a/src/utils/streamlinedTransform.ts b/src/utils/streamlinedTransform.ts
index 36245c389..d8e13fce8 100644
--- a/src/utils/streamlinedTransform.ts
+++ b/src/utils/streamlinedTransform.ts
@@ -137,14 +137,14 @@ export function createStreamlinedTransformer(): (
   ): StdoutMessage | null {
     switch (message.type) {
       case 'assistant': {
-        const messageContent = (message as SDKAssistantMessage).message
+        const messageContent = (message as unknown as SDKAssistantMessage).message
         const content = messageContent?.content
         const text = Array.isArray(content)
           ? extractTextContent(content, '\n').trim()
           : ''
 
         // Accumulate tool counts from this message
-        accumulateToolUses(message as SDKAssistantMessage, cumulativeCounts)
+        accumulateToolUses(message as unknown as SDKAssistantMessage, cumulativeCounts)
 
         if (text.length > 0) {
           // Text message: emit text only, reset counts