feat(settings): add Hermes config dir override with data-driven dispatch

Adds a dedicated Hermes row to the directory-override settings so users
can point CC Switch at alternate Hermes config locations (e.g. a second
profile directory for work/personal split). `get_config_dir` on the
Rust side already supports hermes; this just wires up the frontend row.

Wiring it through `useDirectorySettings` revealed a scaling problem:
every supported app required five parallel ternary chains across
`computeDefaultConfigDir`, `updateDirectory`, `browseDirectory`,
`resetDirectory`, and `updateDirectoryState`. Replaces those with two
lookup tables (`APP_DIRECTORY_META`, `DIRECTORY_KEY_TO_SETTINGS_FIELD`)
so adding the next app is two entries, not fifteen edit sites.

Drive-by cleanup from the same touch:
* `resetAllDirectories` takes a `ResolvedAppDirectoryOverrides` object
  instead of five positional optional strings.
* `setResolvedDirs` returns the same reference when the sanitized
  value is unchanged, so no-op edits don't cascade renders.

Also lands all i18n updates for this series (`hermesConfigDir` and
placeholder, Memory section's enable/disable/toggleFailed copy, and
the reworded `schemaMigratedV12` warning) in zh/en/ja together.

src/i18n/locales/en.json

@@ -579,11 +579,14 @@
     "opencodeConfigDirDescription": "Override OpenCode configuration directory (opencode.json).",
     "openclawConfigDir": "OpenClaw Configuration Directory",
     "openclawConfigDirDescription": "Override OpenClaw configuration directory (openclaw.json).",
+    "hermesConfigDir": "Hermes Configuration Directory",
+    "hermesConfigDirDescription": "Override Hermes configuration directory (config.yaml).",
     "browsePlaceholderClaude": "e.g., /home/<your-username>/.claude",
     "browsePlaceholderCodex": "e.g., /home/<your-username>/.codex",
     "browsePlaceholderGemini": "e.g., /home/<your-username>/.gemini",
     "browsePlaceholderOpencode": "e.g., /home/<your-username>/.config/opencode",
     "browsePlaceholderOpenclaw": "e.g., /home/<your-username>/.openclaw",
+    "browsePlaceholderHermes": "e.g., /home/<your-username>/.hermes",
     "browseDirectory": "Browse Directory",
     "resetDefault": "Reset to default directory (takes effect after saving)",
     "checkForUpdates": "Check for Updates",
@@ -1674,7 +1677,14 @@
       "title": "Hermes config warnings detected",
       "parseFailed": "config.yaml could not be parsed as valid YAML. Fix the file before editing it here.",
       "configNotFound": "Hermes config.yaml not found. Create it at ~/.hermes/config.yaml or configure the path in settings.",
-      "envParseFailed": "The .env file could not be parsed."
+      "envParseFailed": "The .env file could not be parsed.",
+      "modelNoDefault": "No default model or provider is configured in the 'model' section.",
+      "customProvidersNotList": "custom_providers should be a YAML list (items prefixed with '-'), not a mapping.",
+      "modelProviderUnknown": "model.provider references a provider that is not configured.",
+      "modelDefaultNotInProvider": "model.default is not in the selected provider's models list.",
+      "duplicateProviderName": "custom_providers contains duplicate provider names — only one entry will be used.",
+      "duplicateProviderBaseUrl": "custom_providers contains duplicate base_urls — possible accidental copy.",
+      "schemaMigratedV12": "Hermes moved some providers into the 'providers:' dict. CC Switch only manages 'custom_providers:' — edit or remove those entries via Hermes Web UI."
     },
     "memory": {
       "title": "Memory",
@@ -1682,7 +1692,10 @@
       "userTab": "User Profile (USER.md)",
       "usage": "{{current}} / {{limit}} characters",
       "overLimit": "Over budget — Hermes will truncate on next load",
-      "disabled": "Memory is disabled in config.yaml. Enable it in Hermes config for edits to take effect.",
+      "enableOn": "Enabled",
+      "enableOff": "Disabled",
+      "disabledHint": "Hermes will skip this memory until re-enabled",
+      "toggleFailed": "Failed to toggle memory",
       "saveSuccess": "Memory saved",
       "saveFailed": "Failed to save memory",
       "loadFailed": "Failed to read memory file",

src/i18n/locales/ja.json

@@ -579,11 +579,14 @@
     "opencodeConfigDirDescription": "OpenCode の設定ディレクトリ（opencode.json）を上書きします。",
     "openclawConfigDir": "OpenClaw 設定ディレクトリ",
     "openclawConfigDirDescription": "OpenClaw の設定ディレクトリ（openclaw.json）を上書きします。",
+    "hermesConfigDir": "Hermes 設定ディレクトリ",
+    "hermesConfigDirDescription": "Hermes の設定ディレクトリ（config.yaml）を上書きします。",
     "browsePlaceholderClaude": "例: /home/<your-username>/.claude",
     "browsePlaceholderCodex": "例: /home/<your-username>/.codex",
     "browsePlaceholderGemini": "例: /home/<your-username>/.gemini",
     "browsePlaceholderOpencode": "例: /home/<your-username>/.config/opencode",
     "browsePlaceholderOpenclaw": "例: /home/<your-username>/.openclaw",
+    "browsePlaceholderHermes": "例: /home/<your-username>/.hermes",
     "browseDirectory": "ディレクトリを選択",
     "resetDefault": "デフォルトに戻す（保存後に反映）",
     "checkForUpdates": "アップデートを確認",
@@ -1674,7 +1677,14 @@
       "title": "Hermes 設定の警告を検出",
       "parseFailed": "config.yaml を有効な YAML として解析できません。ここで編集する前にファイルを修正してください。",
       "configNotFound": "Hermes config.yaml が見つかりません。~/.hermes/config.yaml に作成するか、設定でパスを構成してください。",
-      "envParseFailed": ".env ファイルを解析できません。"
+      "envParseFailed": ".env ファイルを解析できません。",
+      "modelNoDefault": "'model' セクションに既定モデルまたはプロバイダーが設定されていません。",
+      "customProvidersNotList": "custom_providers はマッピングではなく、YAML リスト（'-' で始まる項目）である必要があります。",
+      "modelProviderUnknown": "model.provider が指すプロバイダーは設定に存在しません。",
+      "modelDefaultNotInProvider": "model.default は選択中のプロバイダーのモデル一覧に含まれていません。",
+      "duplicateProviderName": "custom_providers にプロバイダー名の重複があります。1 件のみ有効になります。",
+      "duplicateProviderBaseUrl": "custom_providers に重複した base_url があります。誤ってコピーされた可能性があります。",
+      "schemaMigratedV12": "Hermes は一部のプロバイダーを 'providers:' dict に移しました。CC Switch は 'custom_providers:' のみを管理します。該当する項目は Hermes Web UI で編集・削除してください。"
     },
     "memory": {
       "title": "メモリ",
@@ -1682,7 +1692,10 @@
       "userTab": "ユーザープロファイル (USER.md)",
       "usage": "{{current}} / {{limit}} 文字",
       "overLimit": "上限を超えました。Hermes は次回読み込み時に切り詰めます",
-      "disabled": "Memory が config.yaml で無効化されています。Hermes 設定で有効化すると編集内容が反映されます。",
+      "enableOn": "有効",
+      "enableOff": "無効",
+      "disabledHint": "再度有効化するまで Hermes はこの記憶をスキップします",
+      "toggleFailed": "メモリの切り替えに失敗しました",
       "saveSuccess": "記憶を保存しました",
       "saveFailed": "記憶の保存に失敗しました",
       "loadFailed": "記憶ファイルの読み込みに失敗しました",

src/i18n/locales/zh.json

@@ -579,11 +579,14 @@
     "opencodeConfigDirDescription": "覆盖 OpenCode 配置目录 (opencode.json)。",
     "openclawConfigDir": "OpenClaw 配置目录",
     "openclawConfigDirDescription": "覆盖 OpenClaw 配置目录 (openclaw.json)。",
+    "hermesConfigDir": "Hermes 配置目录",
+    "hermesConfigDirDescription": "覆盖 Hermes 配置目录 (config.yaml)。",
     "browsePlaceholderClaude": "例如：/home/<你的用户名>/.claude",
     "browsePlaceholderCodex": "例如：/home/<你的用户名>/.codex",
     "browsePlaceholderGemini": "例如：/home/<你的用户名>/.gemini",
     "browsePlaceholderOpencode": "例如：/home/<你的用户名>/.config/opencode",
     "browsePlaceholderOpenclaw": "例如：/home/<你的用户名>/.openclaw",
+    "browsePlaceholderHermes": "例如：/home/<你的用户名>/.hermes",
     "browseDirectory": "浏览目录",
     "resetDefault": "恢复默认目录（需保存后生效）",
     "checkForUpdates": "检查更新",
@@ -1674,7 +1677,14 @@
       "title": "检测到 Hermes 配置警告",
       "parseFailed": "config.yaml 无法解析为有效 YAML。请先修复文件再在此编辑。",
       "configNotFound": "未找到 Hermes config.yaml。请在 ~/.hermes/config.yaml 创建或在设置中配置路径。",
-      "envParseFailed": ".env 文件无法解析。"
+      "envParseFailed": ".env 文件无法解析。",
+      "modelNoDefault": "model 段未设置默认模型或供应商。",
+      "customProvidersNotList": "custom_providers 应为 YAML 列表（以 `-` 开头），而不是映射。",
+      "modelProviderUnknown": "model.provider 指向的供应商未在配置中找到。",
+      "modelDefaultNotInProvider": "model.default 指向的模型不在所选供应商的模型列表中。",
+      "duplicateProviderName": "custom_providers 中存在重复的供应商名，只会有一条生效。",
+      "duplicateProviderBaseUrl": "custom_providers 中存在重复的 base_url，可能是意外复制。",
+      "schemaMigratedV12": "Hermes 把部分供应商移到了 'providers:' dict。CC Switch 只管理 'custom_providers:'，请在 Hermes Web UI 编辑或删除这些条目。"
     },
     "memory": {
       "title": "记忆管理",
@@ -1682,7 +1692,10 @@
       "userTab": "用户画像 (USER.md)",
       "usage": "已用 {{current}} / {{limit}} 字符",
       "overLimit": "已超过上限，Hermes 下次加载时会截断",
-      "disabled": "Memory 在 config.yaml 中已禁用，编辑后需在 Hermes 配置启用才会生效。",
+      "enableOn": "已启用",
+      "enableOff": "已禁用",
+      "disabledHint": "在重新启用前 Hermes 会跳过此记忆",
+      "toggleFailed": "切换记忆状态失败",
       "saveSuccess": "记忆已保存",
       "saveFailed": "保存记忆失败",
       "loadFailed": "读取记忆文件失败",