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>
2026-06-03 15:52:38 +08:00
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+canonical_id: "number_ops"
+display_name: "數字操作"
+category: "logic"
+version: "v1"
+wasi_target: "preview1"
+stability: "floating"
+runtime_compat:
+  - "cf-workers"
+  - "workerd"
+  - "wazero"
+constraints:
+  max_size_kb: 2048
+  max_cold_start_ms: 50
+  no_network_syscall: true
+  no_filesystem_syscall: true
+  io_model: "stdin_stdout_json"
+input_schema:
+  type: object
+  required: [operation, input]
+  properties:
+    operation:
+      type: string
+      enum: [round, floor, ceil, abs, add, subtract, multiply, divide, mod, min, max, format]
+    input:
+      type: number
+    args:
+      type: object
+      properties:
+        value:
+          type: number
+        decimals:
+          type: number
+output_schema:
+  type: object
+  properties:
+    success:
+      type: boolean
+    data:
+      type: object
+      properties:
+        result: {}
+        operation:
+          type: string
+gherkin_tests:
+  - scenario: "round 操作"
+    given: '{"operation":"round","input":3.14}'
+    then_contains: '"result":3'
+  - scenario: "add 操作"
+    given: '{"operation":"add","input":10,"args":{"value":5}}'
+    then_contains: '"result":15'
+  - scenario: "除以零"
+    given: '{"operation":"divide","input":10,"args":{"value":0}}'
+    then_contains: '{"success":false'
+tags: [builtin, data, number, math, transform]
+description: "數字操作：round/floor/ceil/abs/add/subtract/multiply/divide/mod/min/max/format。"
+config_example: |
+  my_number_op:                           # 節點名稱（可自訂）
+    operation: "add"                      # 運算類型（必填），可選值：round/floor/ceil/abs/add/subtract/multiply/divide/mod/min/max/format
+    input: 10                             # 輸入數字（必填）
+    args:                                 # 操作參數，依 operation 而定（選填）
+      value: 5                            # add/subtract/multiply/divide/mod/min/max 用：第二個運算元
+      decimals: 2                         # round/format 用：小數位數