refactor: replace console.log/warn/error with file-based log() for silent logging

Replace all console output with shared logger to write to
/tmp/oh-my-opencode.log instead of stdout/stderr.

Files changed:
- index.ts: console.warn → log()
- hook-message-injector/injector.ts: console.warn → log()
- lsp/client.ts: console.error → log()
- ast-grep/downloader.ts: console.log/error → log()
- session-recovery/index.ts: console.error → log()
- comment-checker/downloader.ts: console.log/error → log()

CLI tools (install.ts, doctor, etc.) retain console output for UX.

src/features/hook-message-injector/injector.ts

@@ -2,6 +2,7 @@ import { existsSync, mkdirSync, readFileSync, readdirSync, writeFileSync } from
 import { join } from "node:path"
 import { MESSAGE_STORAGE, PART_STORAGE } from "./constants"
 import type { MessageMeta, OriginalMessageContext, TextPart, ToolPermission } from "./types"
+import { log } from "../../shared/logger"
 
 export interface StoredMessage {
   agent?: string
@@ -117,7 +118,7 @@ export function injectHookMessage(
 ): boolean {
   // Validate hook content to prevent empty message injection
   if (!hookContent || hookContent.trim().length === 0) {
-    console.warn("[hook-message-injector] Attempted to inject empty hook content, skipping injection", {
+    log("[hook-message-injector] Attempted to inject empty hook content, skipping injection", {
       sessionID,
       hasAgent: !!originalMessage.agent,
       hasModel: !!(originalMessage.model?.providerID && originalMessage.model?.modelID)

src/hooks/comment-checker/downloader.ts

@@ -4,6 +4,7 @@ import { join } from "path"
 import { homedir, tmpdir } from "os"
 import { createRequire } from "module"
 import { extractZip } from "../../shared"
+import { log } from "../../shared/logger"
 
 const DEBUG = process.env.COMMENT_CHECKER_DEBUG === "1"
 const DEBUG_FILE = join(tmpdir(), "comment-checker-debug.log")
@@ -127,7 +128,7 @@ export async function downloadCommentChecker(): Promise<string | null> {
   const downloadUrl = `https://github.com/${REPO}/releases/download/v${version}/${assetName}`
   
   debugLog(`Downloading from: ${downloadUrl}`)
-  console.log(`[oh-my-opencode] Downloading comment-checker binary...`)
+  log(`[oh-my-opencode] Downloading comment-checker binary...`)
   
   try {
     // Ensure cache directory exists
@@ -166,14 +167,14 @@ export async function downloadCommentChecker(): Promise<string | null> {
     }
     
     debugLog(`Successfully downloaded binary to: ${binaryPath}`)
-    console.log(`[oh-my-opencode] comment-checker binary ready.`)
+    log(`[oh-my-opencode] comment-checker binary ready.`)
     
     return binaryPath
     
   } catch (err) {
     debugLog(`Failed to download: ${err}`)
-    console.error(`[oh-my-opencode] Failed to download comment-checker: ${err instanceof Error ? err.message : err}`)
+    log(`[oh-my-opencode] Failed to download comment-checker: ${err instanceof Error ? err.message : err}`)
-    console.error(`[oh-my-opencode] Comment checking disabled.`)
+    log(`[oh-my-opencode] Comment checking disabled.`)
     return null
   }
 }

src/hooks/session-recovery/index.ts

@@ -16,6 +16,7 @@ import {
   stripThinkingParts,
 } from "./storage"
 import type { MessageData, ResumeConfig } from "./types"
+import { log } from "../../shared/logger"
 
 export interface SessionRecoveryOptions {
   experimental?: ExperimentalConfig
@@ -414,7 +415,7 @@ export function createSessionRecoveryHook(ctx: PluginInput, options?: SessionRec
 
       return success
   } catch (err) {
-    console.error("[session-recovery] Recovery failed:", err)
+    log("[session-recovery] Recovery failed:", err)
     return false
   } finally {
     processingErrors.delete(assistantMsgID)

src/index.ts

@@ -118,7 +118,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
     
     if (externalNotifier.detected && !forceEnable) {
       // External notification plugin detected - skip our notification to avoid conflicts
-      console.warn(getNotificationConflictWarning(externalNotifier.pluginName!));
+      log(getNotificationConflictWarning(externalNotifier.pluginName!));
       log("session-notification disabled due to external notifier conflict", {
         detected: externalNotifier.pluginName,
         allPlugins: externalNotifier.allPlugins,

src/tools/ast-grep/downloader.ts

@@ -3,6 +3,7 @@ import { join } from "path"
 import { homedir } from "os"
 import { createRequire } from "module"
 import { extractZip } from "../../shared"
+import { log } from "../../shared/logger"
 
 const REPO = "ast-grep/ast-grep"
 
@@ -63,7 +64,7 @@ export async function downloadAstGrep(version: string = DEFAULT_VERSION): Promis
   const platformInfo = PLATFORM_MAP[platformKey]
 
   if (!platformInfo) {
-    console.error(`[oh-my-opencode] Unsupported platform for ast-grep: ${platformKey}`)
+    log(`[oh-my-opencode] Unsupported platform for ast-grep: ${platformKey}`)
     return null
   }
 
@@ -79,7 +80,7 @@ export async function downloadAstGrep(version: string = DEFAULT_VERSION): Promis
   const assetName = `app-${arch}-${os}.zip`
   const downloadUrl = `https://github.com/${REPO}/releases/download/${version}/${assetName}`
 
-  console.log(`[oh-my-opencode] Downloading ast-grep binary...`)
+  log(`[oh-my-opencode] Downloading ast-grep binary...`)
 
   try {
     if (!existsSync(cacheDir)) {
@@ -106,11 +107,11 @@ export async function downloadAstGrep(version: string = DEFAULT_VERSION): Promis
       chmodSync(binaryPath, 0o755)
     }
 
-    console.log(`[oh-my-opencode] ast-grep binary ready.`)
+    log(`[oh-my-opencode] ast-grep binary ready.`)
 
     return binaryPath
   } catch (err) {
-    console.error(
+    log(
       `[oh-my-opencode] Failed to download ast-grep: ${err instanceof Error ? err.message : err}`
     )
     return null

src/tools/lsp/client.ts

@@ -11,6 +11,7 @@ import {
 } from "vscode-jsonrpc/node"
 import { getLanguageId } from "./config"
 import type { Diagnostic, ResolvedServer } from "./types"
+import { log } from "../../shared/logger"
 
 interface ManagedClient {
   client: LSPClient
@@ -306,7 +307,7 @@ export class LSPClient {
     })
 
     this.connection.onError((error) => {
-      console.error("LSP connection error:", error)
+      log("LSP connection error:", error)
     })
 
     this.connection.listen()