fix: language selector mutual exclusion with preset buttons

- When "Other" is selected, preset language buttons are deselected
- Only one option can be selected at a time
- Refactor dictionary page with zustand store
- Add custom language input option to dictionary
- Fix multiple issues in dictionary bigmodel pipeline

src/lib/bigmodel/dictionary/orchestrator.ts

@@ -19,12 +19,12 @@ export async function executeDictionaryLookup(
 
         if (!analysis.isValid) {
             log.debug("[Stage 1] Invalid input", { reason: analysis.reason });
-            throw analysis.reason || "无效输入";
+            throw new LookUpError(analysis.reason || "无效输入");
         }
 
         if (analysis.isEmpty) {
             log.debug("[Stage 1] Empty input");
-            throw "输入为空";
+            throw new LookUpError("输入为空");
         }
 
         log.debug("[Stage 1] Analysis complete", { analysis });
@@ -33,7 +33,7 @@ export async function executeDictionaryLookup(
         const semanticMapping = await determineSemanticMapping(
             text,
             queryLang,
-            analysis.inputLanguage || text
+            analysis.inputLanguage ?? text
         );
 
         log.debug("[Stage 2] Semantic mapping complete", { semanticMapping });

src/lib/bigmodel/dictionary/stage2-semanticMapping.ts

@@ -74,7 +74,7 @@ b) 输入是明确、基础、可词典化的语义概念
                 role: "user",
                 content: prompt,
             },
-        ]).then(parseAIGeneratedJSON<any>);
+        ]).then(parseAIGeneratedJSON<SemanticMappingResult>);
 
         // 代码层面的数据验证
         if (typeof result.shouldMap !== "boolean") {

src/lib/bigmodel/dictionary/stage3-standardForm.ts

@@ -66,7 +66,7 @@ ${originalInput ? `
                 role: "user",
                 content: prompt,
             },
-        ]).then(parseAIGeneratedJSON<any>);
+        ]).then(parseAIGeneratedJSON<StandardFormResult>);
 
         // 代码层面的数据验证
         if (!result.standardForm || result.standardForm.trim().length === 0) {

src/lib/bigmodel/dictionary/stage4-entriesGeneration.ts

@@ -98,10 +98,6 @@ ${isWord ? `
             if (isWord && !entry.partOfSpeech) {
                 throw new Error("阶段4：单词条目缺少 partOfSpeech");
             }
-
-            if (isWord && !entry.ipa) {
-                throw new Error("阶段4：单词条目缺少 ipa");
-            }
         }
 
         return result;