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/commands/mod.rs

@@ -5,6 +5,7 @@ mod import_export;
 mod mcp;
 mod misc;
 mod plugin;
+mod prompt;
 mod provider;
 mod settings;
 
@@ -13,5 +14,6 @@ pub use import_export::*;
 pub use mcp::*;
 pub use misc::*;
 pub use plugin::*;
+pub use prompt::*;
 pub use provider::*;
 pub use settings::*;

src-tauri/src/commands/prompt.rs

@@ -0,0 +1,66 @@
+use std::collections::HashMap;
+use std::str::FromStr;
+
+use tauri::State;
+
+use crate::app_config::AppType;
+use crate::prompt::Prompt;
+use crate::services::PromptService;
+use crate::store::AppState;
+
+#[tauri::command]
+pub async fn get_prompts(
+    app: String,
+    state: State<'_, AppState>,
+) -> Result<HashMap<String, Prompt>, String> {
+    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
+    PromptService::get_prompts(&state, app_type).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub async fn upsert_prompt(
+    app: String,
+    id: String,
+    prompt: Prompt,
+    state: State<'_, AppState>,
+) -> Result<(), String> {
+    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
+    PromptService::upsert_prompt(&state, app_type, &id, prompt).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub async fn delete_prompt(
+    app: String,
+    id: String,
+    state: State<'_, AppState>,
+) -> Result<(), String> {
+    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
+    PromptService::delete_prompt(&state, app_type, &id).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub async fn enable_prompt(
+    app: String,
+    id: String,
+    state: State<'_, AppState>,
+) -> Result<(), String> {
+    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
+    PromptService::enable_prompt(&state, app_type, &id).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub async fn import_prompt_from_file(
+    app: String,
+    state: State<'_, AppState>,
+) -> Result<String, String> {
+    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
+    PromptService::import_from_file(&state, app_type).map_err(|e| e.to_string())
+}
+
+#[tauri::command]
+pub async fn get_current_prompt_file_content(
+    app: String,
+) -> Result<Option<String>, String> {
+    let app_type = AppType::from_str(&app).map_err(|e| e.to_string())?;
+    PromptService::get_current_file_content(app_type).map_err(|e| e.to_string())
+}