chore(cypher-executor): 清除 KBDB-specific TS 邏輯與 WASM 白名單違規項

- 刪除 src/lib/kbdb-partner.ts(整檔)
- routes/auth.ts:移除 kbdb-partner import + 3 處 ensureKbdbPartner/revokeKbdbPartner 呼叫
- wrangler.toml:刪除 KBDB_BASE_URL 與 KBDB_INTERNAL_TOKEN 註解
- lib/component-loader.ts:WASM_HTTP_RUNNER_IDS 移除 claude_api + 6 個 kbdb_*;
  doc comment / wasmWorkerUrl 範例 / 第 7 步註解全部清掉 Phase 3 與 kbdb 字樣
- types.ts:Bindings 移除 KBDB_BASE_URL 宣告
- graph-executor.ts:註解範例改為非 kbdb 等效描述

同捎(分開議題,一起進):
- .gitignore 刪除
- webhooks-named.ts:resumable-workflow ?async=1 分支(waitUntil + 202)

tsc --noEmit 通過。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

cypher-executor/wrangler.toml

@@ -103,8 +103,6 @@ service = "arcrun-ai-transform-run"
 ENVIRONMENT = "production"
 # MULTI_TENANT = "true"
 # ENCRYPTION_KEY 透過 wrangler secret set 設定
-KBDB_BASE_URL = "https://kbdb.finally.click"
-# KBDB_INTERNAL_TOKEN 透過 wrangler secret set 設定
 
 # Component worker subdomain（workers.dev 帳號 subdomain）
 # cypher-executor fetch component worker 一律走 arcrun-{name}.{WORKER_SUBDOMAIN}.workers.dev