feat: 品牌替换 + 启动优化 + AGENTS.md 模板定制

- 品牌替换：OpenCode/opencode → AirCoding/aircoding（16+ 文件）
- Logo ASCII art：修复 left/right 行数不匹配导致的启动崩溃
- 启动诊断：添加 OPENCODE_PRINT_TIMING 计时探针
- dev 模式默认 --pure 跳过外部插件加载
- AGENTS.md 模板：追加 AirCoding 多 Agent 专项段落
- architect prompt + plugin：强化 AGENTS.md 产出验证

packages/opencode/src/cli/cmd/debug/ripgrep.ts

@@ -0,0 +1,79 @@
+import { EOL } from "os"
+import { Effect } from "effect"
+import { Ripgrep } from "@opencode-ai/core/ripgrep"
+import { effectCmd } from "../../effect-cmd"
+import { cmd } from "../cmd"
+import { InstanceRef } from "@/effect/instance-ref"
+
+export const RipgrepCommand = cmd({
+  command: "rg",
+  describe: "ripgrep debugging utilities",
+  builder: (yargs) => yargs.command(FilesCommand).command(SearchCommand).demandCommand(),
+  async handler() {},
+})
+
+const FilesCommand = effectCmd({
+  command: "files",
+  describe: "list files using ripgrep",
+  builder: (yargs) =>
+    yargs
+      .option("query", {
+        type: "string",
+        description: "Filter files by query",
+      })
+      .option("glob", {
+        type: "string",
+        description: "Glob pattern to match files",
+      })
+      .option("limit", {
+        type: "number",
+        description: "Limit number of results",
+      }),
+  handler: Effect.fn("Cli.debug.rg.files")(function* (args) {
+    const ctx = yield* InstanceRef
+    if (!ctx) return
+    const ripgrep = yield* Ripgrep.Service
+    const files = yield* ripgrep
+      .glob({
+        cwd: ctx.directory,
+        pattern: args.glob ?? "**/*",
+        limit: args.limit ?? 10_000,
+      })
+      .pipe(Effect.orDie)
+    process.stdout.write(files.map((file) => file.path).join(EOL) + EOL)
+  }),
+})
+
+const SearchCommand = effectCmd({
+  command: "search <pattern>",
+  describe: "search file contents using ripgrep",
+  builder: (yargs) =>
+    yargs
+      .positional("pattern", {
+        type: "string",
+        demandOption: true,
+        description: "Search pattern",
+      })
+      .option("glob", {
+        type: "array",
+        description: "File glob patterns",
+      })
+      .option("limit", {
+        type: "number",
+        description: "Limit number of results",
+      }),
+  handler: Effect.fn("Cli.debug.rg.search")(function* (args) {
+    const ctx = yield* InstanceRef
+    if (!ctx) return
+    const ripgrep = yield* Ripgrep.Service
+    const results = yield* ripgrep
+      .grep({
+        cwd: ctx.directory,
+        pattern: args.pattern,
+        include: args.glob?.[0],
+        limit: args.limit ?? 10_000,
+      })
+      .pipe(Effect.orDie)
+    process.stdout.write(JSON.stringify(results, null, 2) + EOL)
+  }),
+})