feat(component): 新增 hash 零件——出貨線版本號機制不必再用 code 腹語術（Arcrun#91）
出貨線的版本號由內容指紋算出（內容一變版本必變），build 站核對官方成品指紋 也要它。此前 registry 裡只有 code 節點提到 hash，沒有專門零件——純計算本該是 一顆零件，不是一段腳本（D70）。 - registry/components/hash/：TinyGo 實作，sha256/sha1/md5，hex/base64 輸出 - .component-builds/hash/：部署包（component.wasm 已 commit，比照 rule 05） - cypher-executor/src/lib/component-loader.ts：WASM_HTTP_RUNNER_IDS 白名單加 'hash'，否則 `component: hash` 在任何實例上都會落到 step 8「找不到零件」 （與 #29 的 code 缺口同形狀）；對應單元測試 cypher-executor/tests/component-loader-hash.test.ts - pending-human-gate/README.md：hash 部分已落地移除，#89 維持原狀 驗證（見 PR 說明附完整輸出）： - wasmtime 本地跑六種 gherkin 情境，結果與系統 shasum/md5 逐位元一致 - 部署到 youlin 測試場（arcrun-hash.youlin-hsieh-dev.workers.dev），POST 直打 六種情境同樣一致 - 在真實工作流（hash-e2e-test-91，youlin 測試場觸發）跑過，含 component-loader 白名單修法的單元測試（vitest + cloudflare:test，本地綠燈） 查證「零件投稿要人工互動解閘」一事：scripts/component-arm.sh、 .claude/hooks/component-guard.sh 均不存在；pre-write-guard.sh 對 registry/components/ 的限制只擋 TS 檔與 auth_* 命名放錯目錄，不擋本次改動。 沒有那個「只有人做得到」的具體物件，故未卡關直接走完。 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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uncle6me-web
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canonical_id: "hash"
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display_name: "計算雜湊"
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category: "logic"
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version: "v1"
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wasi_target: "preview1"
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stability: "floating"
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runtime_compat:
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- "cf-workers"
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- "workerd"
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- "wazero"
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constraints:
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max_size_kb: 2048
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max_cold_start_ms: 50
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no_network_syscall: true
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no_filesystem_syscall: true
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io_model: "stdin_stdout_json"
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input_schema:
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type: object
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required: [input]
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properties:
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algorithm:
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type: string
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enum: [sha256, sha1, md5]
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description: 雜湊演算法，預設 sha256
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input:
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type: string
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description: 要算雜湊的內容
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encoding:
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type: string
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enum: [hex, base64]
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description: 輸出編碼，預設 hex
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output_schema:
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type: object
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properties:
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success:
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type: boolean
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data:
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type: object
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properties:
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result:
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type: string
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algorithm:
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type: string
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encoding:
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type: string
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gherkin_tests:
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- scenario: "sha256 hex（預設）"
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given: '{"algorithm":"sha256","input":"hello"}'
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then_contains: '"result":"2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"'
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- scenario: "sha1"
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given: '{"algorithm":"sha1","input":"hello"}'
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then_contains: '"result":"aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d"'
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- scenario: "md5"
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given: '{"algorithm":"md5","input":"hello"}'
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then_contains: '"result":"5d41402abc4b2a76b9719d911017c592"'
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- scenario: "base64 編碼"
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given: '{"algorithm":"sha256","input":"hello","encoding":"base64"}'
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then_contains: '"result":"LPJNul+wow4m6DsqxbninhsWHlwfp0JecwQzYpOLmCQ="'
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- scenario: "預設 algorithm=sha256"
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given: '{"input":"hello"}'
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then_contains: '"algorithm":"sha256"'
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- scenario: "不支援的 algorithm"
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given: '{"algorithm":"crc32","input":"hello"}'
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then_contains: '{"success":false'
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tags: [builtin, logic, hash, checksum, versioning]
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description: >-
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計算內容雜湊（sha256/sha1/md5，輸出 hex 或 base64）。純計算，無網路/檔案 syscall。
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用途：出貨線版本號機制（Leo/Arcrun#91）——內容一變雜湊必變，是「改了東西版本沒動」在結構上
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不可能發生的機制來源；build 站核對官方成品指紋也用它。
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config_example: |
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compute_hash: # 節點名稱（可自訂）
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algorithm: "sha256" # 演算法（選填，預設 sha256），可選值：sha256/sha1/md5
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input: "{{ctx.bundle_content}}" # 要算雜湊的內容（必填）
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encoding: "hex" # 輸出編碼（選填，預設 hex），可選值：hex/base64
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@@ -0,0 +1,3 @@
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module component
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go 1.21
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@@ -0,0 +1,89 @@
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// hash — 計算內容雜湊（純計算，無網路/檔案 syscall）
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// 支援: sha256, sha1, md5；輸出編碼: hex（預設）, base64
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// 用途：出貨線版本號機制（Leo/Arcrun#91）——內容一變雜湊必變，
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// 是「改了東西版本沒動」在結構上不可能發生的機制來源。
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//
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//go:build tinygo
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package main
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import (
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"crypto/md5"
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"crypto/sha1"
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"crypto/sha256"
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"encoding/base64"
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"encoding/hex"
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"encoding/json"
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"io"
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"os"
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)
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type Input struct {
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Algorithm string `json:"algorithm"` // sha256（預設）| sha1 | md5
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Input string `json:"input"`
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Encoding string `json:"encoding"` // hex（預設）| base64
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}
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func main() {
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raw, err := io.ReadAll(os.Stdin)
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if err != nil {
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writeError("failed to read stdin: " + err.Error())
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return
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}
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var in Input
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if err := json.Unmarshal(raw, &in); err != nil {
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writeError("invalid input JSON: " + err.Error())
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return
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}
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algorithm := in.Algorithm
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if algorithm == "" {
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algorithm = "sha256"
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}
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encoding := in.Encoding
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if encoding == "" {
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encoding = "hex"
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}
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var sum []byte
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switch algorithm {
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case "sha256":
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h := sha256.Sum256([]byte(in.Input))
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sum = h[:]
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case "sha1":
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h := sha1.Sum([]byte(in.Input))
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sum = h[:]
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case "md5":
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h := md5.Sum([]byte(in.Input))
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sum = h[:]
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default:
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writeError("不支援的 algorithm: " + algorithm + "（支援 sha256/sha1/md5）")
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return
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}
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var result string
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switch encoding {
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case "hex":
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result = hex.EncodeToString(sum)
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case "base64":
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result = base64.StdEncoding.EncodeToString(sum)
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default:
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writeError("不支援的 encoding: " + encoding + "（支援 hex/base64）")
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return
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}
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out, _ := json.Marshal(map[string]interface{}{
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"success": true,
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"data": map[string]interface{}{
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"result": result,
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"algorithm": algorithm,
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"encoding": encoding,
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},
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})
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os.Stdout.Write(out)
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}
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func writeError(msg string) {
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out, _ := json.Marshal(map[string]interface{}{"success": false, "error": msg})
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os.Stdout.Write(out)
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}
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