build(deps): upgrade biome 1.9.4 → 2.4.7 and migrate config

Run `biome migrate --write` to update config for v2:
- $schema bumped to 2.4.7
- organizeImports moved to assist.actions.source
- noUnnecessaryContinue renamed to noUselessContinue under complexity

Fix three warnings introduced by new noUnusedFunctionParameters rule:
- Prefix unused `config` params with _ in plugin.ts and store.ts
- Remove unused `calls` destructure in orchestrator.test.ts

Closes #6

Author: blazejpawlak

biome.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+  "$schema": "https://biomejs.dev/schemas/2.4.7/schema.json",
   "vcs": {
     "enabled": true,
     "clientKind": "git",
@@ -15,9 +15,7 @@
     "lineWidth": 100,
     "lineEnding": "lf"
   },
-  "organizeImports": {
-    "enabled": true
-  },
+  "assist": { "actions": { "source": { "organizeImports": "on" } } },
   "linter": {
     "enabled": true,
     "rules": {
@@ -27,12 +25,11 @@
         "useNodejsImportProtocol": "off",
         "useTemplate": "off"
       },
-      "correctness": {
-        "noUnnecessaryContinue": "off"
-      },
+      "correctness": {},
       "complexity": {
         "noBannedTypes": "off",
-        "useLiteralKeys": "off"
+        "useLiteralKeys": "off",
+        "noUselessContinue": "off"
       },
       "suspicious": {
         "noExplicitAny": "off"

bun.lock

@@ -28,16 +28,16 @@
     "zod": ">=4.0.0"
   },
   "devDependencies": {
-    "@biomejs/biome": "^1.9.4",
+    "@biomejs/biome": "2.4.7",
     "@opencode-ai/plugin": "^1.2.24",
-    "@types/bun": "^1.3.10",
-    "@types/js-yaml": "^4.0.9",
     "@semantic-release/changelog": "^6.0.3",
     "@semantic-release/commit-analyzer": "^13.0.1",
     "@semantic-release/git": "^10.0.1",
     "@semantic-release/github": "^11.0.6",
     "@semantic-release/npm": "^12.0.2",
     "@semantic-release/release-notes-generator": "^14.1.0",
+    "@types/bun": "^1.3.10",
+    "@types/js-yaml": "^4.0.9",
     "js-yaml": "^4.1.0",
     "semantic-release": "^24.2.9",
     "typescript": "^5.9.3",

package.json

@@ -271,7 +271,7 @@ export async function handleIdle(
   sessionId: string,
   client: Parameters<Plugin>[0]["client"],
   store: FallbackStore,
-  config: ReturnType<typeof loadConfig>["config"],
+  _config: ReturnType<typeof loadConfig>["config"],
   logger: Logger
 ): Promise<void> {
   const state = store.sessions.get(sessionId);

src/plugin.ts

@@ -10,7 +10,7 @@ export class FallbackStore {
   readonly health: ModelHealthStore;
   readonly sessions: SessionStateStore;
 
-  constructor(config: PluginConfig, logger: Logger) {
+  constructor(_config: PluginConfig, logger: Logger) {
     this.sessions = new SessionStateStore();
     this.health = new ModelHealthStore({
       onTransition: (modelKey, from, to) => {

src/state/store.ts

@@ -1,7 +1,7 @@
-import { describe, it, expect, afterEach } from "bun:test";
+import { afterEach, describe, expect, it } from "bun:test";
+import { Logger } from "../src/logging/logger.js";
 import { attemptFallback } from "../src/replay/orchestrator.js";
 import { FallbackStore } from "../src/state/store.js";
-import { Logger } from "../src/logging/logger.js";
 import type { PluginConfig } from "../src/types.js";
 import { makeMockClient, makeUserMessage } from "./helpers/mock-client.js";
 
@@ -431,7 +431,7 @@ describe("attemptFallback — concurrency", () => {
     // Verify the race fix: lastFallbackAt is set before session.prompt()
     let dedupWindowActiveAtPromptTime = false;
 
-    const { client, calls } = makeMockClient({
+    const { client } = makeMockClient({
       messages: [makeUserMessage("s1", "m1", "openai", "gpt-5.3-codex", "coder")],
     });