feat(prompts+i18n): add prompt management and improve prompt editor i18n (#193)

* feat(prompts): add prompt management across Tauri service and React UI

- backend: add commands/prompt.rs, services/prompt.rs, register in commands/mod.rs and lib.rs, refine app_config.rs
- frontend: add PromptPanel, PromptFormModal, PromptListItem, MarkdownEditor, usePromptActions, integrate in App.tsx
- api: add src/lib/api/prompts.ts
- i18n: update src/i18n/locales/{en,zh}.json
- build: update package.json and pnpm-lock.yaml

* feat(i18n): improve i18n for prompts and Markdown editor

- update src/i18n/locales/{en,zh}.json keys and strings
- apply i18n in PromptFormModal, PromptPanel, and MarkdownEditor
- align prompt text with src-tauri/src/services/prompt.rs

* feat(prompts): add enable/disable toggle and simplify panel UI

- Add PromptToggle component and integrate in prompt list items
- Implement toggleEnabled with optimistic update; enable via API, disable via upsert with enabled=false;
  reload after success
- Simplify PromptPanel: remove file import and current-file preview to keep CRUD flow focused
- Tweak header controls style (use mcp variant) and minor copy: rename “Prompt Management” to “Prompts”
- i18n: add disableSuccess/disableFailed messages
- Backend (Tauri): prevent duplicate backups when importing original prompt content

* style: unify code formatting with trailing commas

* feat(prompts): add Gemini filename support to PromptFormModal

Update filename mapping to use Record<AppId, string> pattern, supporting
GEMINI.md alongside CLAUDE.md and AGENTS.md.

* fix(prompts): sync enabled prompt to file when updating

When updating a prompt that is currently enabled, automatically sync
the updated content to the corresponding live file (CLAUDE.md/AGENTS.md/GEMINI.md).

This ensures the active prompt file always reflects the latest content
when editing enabled prompts.

src-tauri/src/lib.rs

@@ -9,6 +9,7 @@ mod error;
 mod gemini_config;  // 新增
 mod init_status;
 mod mcp;
+mod prompt;
 mod provider;
 mod services;
 mod settings;
@@ -24,7 +25,9 @@ pub use mcp::{
     import_from_claude, import_from_codex, sync_enabled_to_claude, sync_enabled_to_codex,
 };
 pub use provider::{Provider, ProviderMeta};
-pub use services::{ConfigService, EndpointLatency, McpService, ProviderService, SpeedtestService};
+pub use services::{
+    ConfigService, EndpointLatency, McpService, PromptService, ProviderService, SpeedtestService,
+};
 pub use settings::{update_settings, AppSettings};
 pub use store::AppState;
 
@@ -551,6 +554,13 @@ pub fn run() {
             commands::sync_enabled_mcp_to_codex,
             commands::import_mcp_from_claude,
             commands::import_mcp_from_codex,
+            // Prompt management
+            commands::get_prompts,
+            commands::upsert_prompt,
+            commands::delete_prompt,
+            commands::enable_prompt,
+            commands::import_prompt_from_file,
+            commands::get_current_prompt_file_content,
             // ours: endpoint speed test + custom endpoint management
             commands::test_api_endpoints,
             commands::get_custom_endpoints,