feat: use ctx.app.log() for OpenCode logging with file fallback

Плагин теперь пытается использовать OpenCode API логирования
(ctx.app.log) для записи в ~/.local/share/opencode/log/.
При ошибке — fallback на файловый лог ~/.opencode-matrix-plugin/plugin.log.

index.ts

@@ -4,7 +4,7 @@ import path from "path"
 import { MatrixBotClient } from "./matrix-client.js"
 import { SessionManager } from "./session-manager.js"
 import { loadConfig } from "./config-loader.js"
-import { log, logError } from "./logger.js"
+import { setAppLog, log, logError } from "./logger.js"
 
 // =============================================================================
 // Plugin data directory — uses the same default as matrix-client
@@ -296,6 +296,11 @@ async function v2Setup(ctx: any) {
     : path.join(os.homedir(), ".local", "share", "opencode-matrix-bot", "plugin-data")
   ensureDataDir(dataDir)
 
+  // Try to use OpenCode's logging API
+  if (ctx?.app?.log) {
+    setAppLog(ctx.app.log.bind(ctx.app))
+  }
+
   try {
     const { options } = await loadConfig(ctx.options)
     return await runPlugin(ctx, options, dataDir)

logger.ts

@@ -5,20 +5,62 @@ import path from "path"
 const LOG_DIR = path.join(os.homedir(), ".opencode-matrix-plugin")
 const LOG_FILE = path.join(LOG_DIR, "plugin.log")
 
+let appLog: ((data: any) => Promise<void>) | null = null
+
+export function setAppLog(fn: (data: any) => Promise<void>): void {
+  appLog = fn
+}
+
 export function log(message: string): void {
+  // Try OpenCode's logging API first
+  if (appLog) {
+    appLog({
+      service: "matrix-plugin",
+      level: "info",
+      message,
+    }).catch(() => {
+      // Fallback to file logging
       try {
         fs.mkdirSync(LOG_DIR, { recursive: true })
         fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ${message}\n`)
       } catch {
         // silent
       }
+    })
+  } else {
+    // No app log available, use file logging
+    try {
+      fs.mkdirSync(LOG_DIR, { recursive: true })
+      fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ${message}\n`)
+    } catch {
+      // silent
+    }
+  }
 }
 
 export function logError(message: string): void {
+  // Try OpenCode's logging API first
+  if (appLog) {
+    appLog({
+      service: "matrix-plugin",
+      level: "error",
+      message,
+    }).catch(() => {
+      // Fallback to file logging
       try {
         fs.mkdirSync(LOG_DIR, { recursive: true })
         fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ERROR: ${message}\n`)
       } catch {
         // silent
       }
+    })
+  } else {
+    // No app log available, use file logging
+    try {
+      fs.mkdirSync(LOG_DIR, { recursive: true })
+      fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [matrix-plugin] ERROR: ${message}\n`)
+    } catch {
+      // silent
+    }
+  }
 }