feat: 添加自动邮箱映射功能并完善署名系统

- 新增 attributionEmail.ts 实现模型名到邮箱的自动映射
- 重构署名逻辑，统一使用 getRealModelName() 和 getAttributionEmail()
- 将产品名从 Claude Code 更新为 Claude Code Best
- 更新 PRODUCT_URL 指向 claude-code-best fork 仓库

Co-Authored-By: glm-4.7 <noreply@zhipuai.cn>

src/utils/attribution.ts

@@ -18,18 +18,12 @@ import {
   type AttributionData,
   calculateCommitAttribution,
   isInternalModelRepo,
-  isInternalModelRepoCached,
-  sanitizeModelName,
 } from './commitAttribution.js'
 import { logForDebugging } from './debug.js'
 import { parseJSONL } from './json.js'
 import { logError } from './log.js'
-import {
-  getCanonicalName,
-  getMainLoopModel,
-  getPublicModelDisplayName,
-  getPublicModelName,
-} from './model/model.js'
+import { getAttributionEmail } from './attributionEmail.js'
+import { getRealModelName } from './attributionModel.js'
 import { isMemoryFileAccess } from './sessionFileAccessHooks.js'
 import { getTranscriptPath } from './sessionStorage.js'
 import { readTranscriptForLoad } from './sessionStoragePortable.js'
@@ -44,7 +38,8 @@ export type AttributionTexts = {
 /**
  * Returns attribution text for commits and PRs based on user settings.
  * Handles:
- * - Dynamic model name via getPublicModelName()
+ * - Dynamic model name via getRealModelName()
+ * - Auto email mapping via getAttributionEmail()
  * - Custom attribution settings (settings.attribution.commit/pr)
  * - Backward compatibility with deprecated includeCoAuthoredBy setting
  * - Remote mode: returns session URL for attribution
@@ -67,17 +62,10 @@ export function getAttributionTexts(): AttributionTexts {
     return { commit: '', pr: '' }
   }
 
-  // @[MODEL LAUNCH]: Update the hardcoded fallback model name below (guards against codename leaks).
-  // For internal repos, use the real model name. For external repos,
-  // fall back to "Claude Opus 4.6" for unrecognized models to avoid leaking codenames.
-  const model = getMainLoopModel()
-  const isKnownPublicModel = getPublicModelDisplayName(model) !== null
-  const modelName =
-    isInternalModelRepoCached() || isKnownPublicModel
-      ? getPublicModelName(model)
-      : 'Claude Opus 4.7'
-  const defaultAttribution = `🤖 Generated with [Claude Code](${PRODUCT_URL})`
-  const defaultCommit = `Co-Authored-By: ${modelName} <noreply@anthropic.com>`
+  const modelName = getRealModelName()
+  const email = getAttributionEmail(modelName)
+  const defaultAttribution = `🤖 Generated with [Claude Code Best](${PRODUCT_URL})`
+  const defaultCommit = `Co-Authored-By: ${modelName} <${email}>`
 
   const settings = getInitialSettings()
 
@@ -354,11 +342,8 @@ export async function getEnhancedPRAttribution(
     `PR Attribution: claudePercent: ${claudePercent}, promptCount: ${promptCount}, memoryAccessCount: ${memoryAccessCount}`,
   )
 
-  // Get short model name, sanitized for non-internal repos
-  const rawModelName = getCanonicalName(getMainLoopModel())
-  const shortModelName = isInternal
-    ? rawModelName
-    : sanitizeModelName(rawModelName)
+  // Get real model name for attribution
+  const realModelName = getRealModelName()
 
   // If no attribution data, return default
   if (claudePercent === 0 && promptCount === 0 && memoryAccessCount === 0) {
@@ -371,7 +356,7 @@ export async function getEnhancedPRAttribution(
     memoryAccessCount > 0
       ? `, ${memoryAccessCount} ${memoryAccessCount === 1 ? 'memory' : 'memories'} recalled`
       : ''
-  const summary = `🤖 Generated with [Claude Code](${PRODUCT_URL}) (${claudePercent}% ${promptCount}-shotted by ${shortModelName}${memSuffix})`
+  const summary = `🤖 Generated with [Claude Code Best](${PRODUCT_URL}) (${claudePercent}% ${promptCount}-shotted by ${realModelName}${memSuffix})`
 
   // Append trailer lines for squash-merge survival. Only for allowlisted repos
   // (INTERNAL_MODEL_REPOS) and only in builds with COMMIT_ATTRIBUTION enabled —