arcrun — AI workflow execution engine (clean history)

Self-hosted 開源：WASM 零件 + recipe + cypher-executor，跑在你自己的 Cloudflare。

此為重建的乾淨歷史起點（移除曾誤 commit 的 GCP SA 金鑰，舊歷史保留在
richblack/arcrun 與本地 backup 分支）。含：
- acr init --self-hosted installer（建 KV/R2 + codeload 拉預編譯 wasm + wrangler deploy + seed recipe）
- recipe push 把關（資料外流提醒 + 打通檢查）
- 19 個正當零件預編譯 wasm（claude_api/km_writer/kbdb_upsert_block 排除：違反 DECISIONS §1）
- CLI / cypher-executor / registry / 完整 SDD

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/arcrun-test/bad-component.yaml

@@ -0,0 +1,6 @@
+name: bad-component
+flow:
+  - "input >> ON_SUCCESS >> nonexistent"
+config:
+  nonexistent:
+    component: does_not_exist

tests/arcrun-test/chinese-flow.yaml

@@ -0,0 +1,7 @@
+name: chinese-flow
+flow:
+  - "input >> 完成後 >> transform"
+config:
+  transform:
+    component: string_ops
+    operation: upper

tests/arcrun-test/cron_heartbeat.yaml

@@ -0,0 +1,23 @@
+name: cron_heartbeat
+description: |
+  arcrun cron infra 健康監控 — 每分鐘觸發一次，set 節點輸出 message。
+  用 wrangler tail arcrun-cypher-executor 看：每分鐘應出現 `[scheduled] trigger cron_heartbeat ...`
+  跟 `[scheduled] done cron_heartbeat true {ms}ms`。
+
+  對應 SDD: matrix/arcrun/.agents/specs/arcrun/arcrun.md 三-A P1 #3。
+
+flow:
+  - "heartbeat_cron >> ON_SUCCESS >> log_heartbeat"
+
+config:
+  heartbeat_cron:
+    component: cron
+    cron_expr: "* * * * *"
+    description: "每分鐘 cron infra heartbeat"
+
+  log_heartbeat:
+    component: set
+    values:
+      message: "alive at {{_scheduled_at}}"
+      cron_triggered: true
+      api_key_prefix: "{{api_key}}"

tests/arcrun-test/custom-node.yaml

@@ -0,0 +1,7 @@
+name: custom-node
+flow:
+  - "input >> ON_SUCCESS >> 我的轉換器"
+config:
+  我的轉換器:
+    component: string_ops
+    operation: upper

tests/arcrun-test/error-routing.yaml

@@ -0,0 +1,11 @@
+name: error-routing
+flow:
+  - "input >> ON_SUCCESS >> risky"
+  - "risky >> ON_FAIL >> fallback"
+config:
+  risky:
+    component: http_request
+    method: GET
+  fallback:
+    component: string_ops
+    operation: upper

tests/arcrun-test/hello.yaml

@@ -0,0 +1,13 @@
+# arcrun hello world workflow
+# 執行：acr run hello --input input="Hello, arcrun!"
+
+name: hello
+description: "Hello world — 示範字串轉大寫"
+
+flow:
+  - "input >> ON_SUCCESS >> transform"
+
+config:
+  transform:
+    component: string_ops
+    operation: upper

tests/arcrun-test/http-test.yaml

@@ -0,0 +1,7 @@
+name: http-test
+flow:
+  - "input >> ON_SUCCESS >> fetch"
+config:
+  fetch:
+    component: http_request
+    method: GET

tests/arcrun-test/string-test.yaml

@@ -0,0 +1,7 @@
+name: string-test
+flow:
+  - "input >> ON_SUCCESS >> process"
+config:
+  process:
+    component: string_ops
+    operation: "{{operation}}"

tests/arcrun-test/validate-test.yaml

@@ -0,0 +1,6 @@
+name: validate-test
+flow:
+  - "input >> ON_SUCCESS >> check"
+config:
+  check:
+    component: validate_json